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authorRichard van der Hoff <github@rvanderhoff.org.uk>2016-12-22 14:43:01 +0000
committerGitHub <noreply@github.com>2016-12-22 14:43:01 +0000
commit90b36130532d2d8040b39e310d8d0d5ee22aea0a (patch)
tree26eabdea9bc04077b1621deb34b5d0cbe669dedd /xcode
parentfb91b1f18269c5b681c972dc4448858db0966c3a (diff)
parent46ad79517ec8e005bd2d1de767d3cd59ec038fe2 (diff)
Merge pull request #36 from matrix-org/manuroe/olmkit
OLMKit
Diffstat (limited to 'xcode')
-rw-r--r--xcode/OLMKit.xcodeproj/project.pbxproj528
-rw-r--r--xcode/OLMKit/Info.plist26
-rw-r--r--xcode/OLMKit/OLMAccount.h51
-rw-r--r--xcode/OLMKit/OLMAccount.m265
-rw-r--r--xcode/OLMKit/OLMAccount_Private.h25
-rw-r--r--xcode/OLMKit/OLMInboundGroupSession.h30
-rw-r--r--xcode/OLMKit/OLMInboundGroupSession.m244
-rw-r--r--xcode/OLMKit/OLMKit.h31
-rw-r--r--xcode/OLMKit/OLMKit.m29
-rw-r--r--xcode/OLMKit/OLMMessage.h38
-rw-r--r--xcode/OLMKit/OLMMessage.m34
-rw-r--r--xcode/OLMKit/OLMOutboundGroupSession.h32
-rw-r--r--xcode/OLMKit/OLMOutboundGroupSession.m220
-rw-r--r--xcode/OLMKit/OLMSerializable.h29
-rw-r--r--xcode/OLMKit/OLMSession.h44
-rw-r--r--xcode/OLMKit/OLMSession.m381
-rw-r--r--xcode/OLMKit/OLMSession_Private.h26
-rw-r--r--xcode/OLMKit/OLMUtility.h49
-rw-r--r--xcode/OLMKit/OLMUtility.m121
-rw-r--r--xcode/OLMKitTests/Info.plist22
-rw-r--r--xcode/OLMKitTests/OLMKitGroupTests.m94
-rw-r--r--xcode/OLMKitTests/OLMKitTests.m206
-rw-r--r--xcode/Podfile7
-rw-r--r--xcode/Podfile.lock20
-rw-r--r--xcode/README.rst26
25 files changed, 2578 insertions, 0 deletions
diff --git a/xcode/OLMKit.xcodeproj/project.pbxproj b/xcode/OLMKit.xcodeproj/project.pbxproj
new file mode 100644
index 0000000..a3b636f
--- /dev/null
+++ b/xcode/OLMKit.xcodeproj/project.pbxproj
@@ -0,0 +1,528 @@
+// !$*UTF8*$!
+{
+ archiveVersion = 1;
+ classes = {
+ };
+ objectVersion = 46;
+ objects = {
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+ CODE_SIGN_IDENTITY = "";
+ DEFINES_MODULE = YES;
+ DYLIB_COMPATIBILITY_VERSION = 1;
+ DYLIB_CURRENT_VERSION = 1;
+ DYLIB_INSTALL_NAME_BASE = "@rpath";
+ INFOPLIST_FILE = OLMKit/Info.plist;
+ INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+ LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+ PRODUCT_BUNDLE_IDENTIFIER = org.matrix.OLMKit;
+ PRODUCT_NAME = "$(TARGET_NAME)";
+ SKIP_INSTALL = YES;
+ };
+ name = Debug;
+ };
+ 3274F60E1D9A633B005282E4 /* Release */ = {
+ isa = XCBuildConfiguration;
+ baseConfigurationReference = 1B226B371526F2782C9D6372 /* Pods-OLMKit.release.xcconfig */;
+ buildSettings = {
+ CODE_SIGN_IDENTITY = "";
+ DEFINES_MODULE = YES;
+ DYLIB_COMPATIBILITY_VERSION = 1;
+ DYLIB_CURRENT_VERSION = 1;
+ DYLIB_INSTALL_NAME_BASE = "@rpath";
+ INFOPLIST_FILE = OLMKit/Info.plist;
+ INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+ LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+ PRODUCT_BUNDLE_IDENTIFIER = org.matrix.OLMKit;
+ PRODUCT_NAME = "$(TARGET_NAME)";
+ SKIP_INSTALL = YES;
+ };
+ name = Release;
+ };
+ 3274F6101D9A633B005282E4 /* Debug */ = {
+ isa = XCBuildConfiguration;
+ baseConfigurationReference = 875BA7A520258EA15A31DD82 /* Pods-OLMKitTests.debug.xcconfig */;
+ buildSettings = {
+ INFOPLIST_FILE = OLMKitTests/Info.plist;
+ LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+ PRODUCT_BUNDLE_IDENTIFIER = org.matrix.OLMKitTests;
+ PRODUCT_NAME = "$(TARGET_NAME)";
+ };
+ name = Debug;
+ };
+ 3274F6111D9A633B005282E4 /* Release */ = {
+ isa = XCBuildConfiguration;
+ baseConfigurationReference = D48E486DAE1F59F4F7EA8C25 /* Pods-OLMKitTests.release.xcconfig */;
+ buildSettings = {
+ INFOPLIST_FILE = OLMKitTests/Info.plist;
+ LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+ PRODUCT_BUNDLE_IDENTIFIER = org.matrix.OLMKitTests;
+ PRODUCT_NAME = "$(TARGET_NAME)";
+ };
+ name = Release;
+ };
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+ 3274F5F21D9A633A005282E4 /* Build configuration list for PBXProject "OLMKit" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 3274F60A1D9A633B005282E4 /* Debug */,
+ 3274F60B1D9A633B005282E4 /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+ 3274F60C1D9A633B005282E4 /* Build configuration list for PBXNativeTarget "OLMKit" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 3274F60D1D9A633B005282E4 /* Debug */,
+ 3274F60E1D9A633B005282E4 /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+ 3274F60F1D9A633B005282E4 /* Build configuration list for PBXNativeTarget "OLMKitTests" */ = {
+ isa = XCConfigurationList;
+ buildConfigurations = (
+ 3274F6101D9A633B005282E4 /* Debug */,
+ 3274F6111D9A633B005282E4 /* Release */,
+ );
+ defaultConfigurationIsVisible = 0;
+ defaultConfigurationName = Release;
+ };
+/* End XCConfigurationList section */
+ };
+ rootObject = 3274F5EF1D9A633A005282E4 /* Project object */;
+}
diff --git a/xcode/OLMKit/Info.plist b/xcode/OLMKit/Info.plist
new file mode 100644
index 0000000..d3de8ee
--- /dev/null
+++ b/xcode/OLMKit/Info.plist
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+ <key>CFBundleDevelopmentRegion</key>
+ <string>en</string>
+ <key>CFBundleExecutable</key>
+ <string>$(EXECUTABLE_NAME)</string>
+ <key>CFBundleIdentifier</key>
+ <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+ <key>CFBundleInfoDictionaryVersion</key>
+ <string>6.0</string>
+ <key>CFBundleName</key>
+ <string>$(PRODUCT_NAME)</string>
+ <key>CFBundlePackageType</key>
+ <string>FMWK</string>
+ <key>CFBundleShortVersionString</key>
+ <string>1.0</string>
+ <key>CFBundleSignature</key>
+ <string>????</string>
+ <key>CFBundleVersion</key>
+ <string>$(CURRENT_PROJECT_VERSION)</string>
+ <key>NSPrincipalClass</key>
+ <string></string>
+</dict>
+</plist>
diff --git a/xcode/OLMKit/OLMAccount.h b/xcode/OLMKit/OLMAccount.h
new file mode 100644
index 0000000..c8d65cd
--- /dev/null
+++ b/xcode/OLMKit/OLMAccount.h
@@ -0,0 +1,51 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "OLMSerializable.h"
+
+@class OLMSession;
+
+@interface OLMAccount : NSObject <OLMSerializable, NSSecureCoding>
+
+/** Creates new account */
+- (instancetype) initNewAccount;
+
+/** public identity keys. base64 encoded in "curve25519" and "ed25519" keys */
+- (NSDictionary*) identityKeys;
+
+/** signs message with ed25519 key for account */
+- (NSString*) signMessage:(NSData*)messageData;
+
+/** Public parts of the unpublished one time keys for the account */
+- (NSDictionary*) oneTimeKeys;
+
+- (BOOL) removeOneTimeKeysForSession:(OLMSession*)session;
+
+/** Marks the current set of one time keys as being published. */
+- (void) markOneTimeKeysAsPublished;
+
+/** The largest number of one time keys this account can store. */
+- (NSUInteger) maxOneTimeKeys;
+
+/** Generates a number of new one time keys. If the total number of keys stored
+ * by this account exceeds -maxOneTimeKeys then the old keys are
+ * discarded. */
+- (void) generateOneTimeKeys:(NSUInteger)numberOfKeys;
+
+@end
diff --git a/xcode/OLMKit/OLMAccount.m b/xcode/OLMKit/OLMAccount.m
new file mode 100644
index 0000000..af1e308
--- /dev/null
+++ b/xcode/OLMKit/OLMAccount.m
@@ -0,0 +1,265 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMAccount.h"
+#import "OLMAccount_Private.h"
+#import "OLMSession.h"
+#import "OLMSession_Private.h"
+#import "OLMUtility.h"
+
+@import Security;
+
+@implementation OLMAccount
+
+- (void) dealloc {
+ olm_clear_account(_account);
+ free(_account);
+}
+
+- (BOOL) initializeAccountMemory {
+ size_t accountSize = olm_account_size();
+ _account = malloc(accountSize);
+ NSParameterAssert(_account != nil);
+ if (!_account) {
+ return NO;
+ }
+ _account = olm_account(_account);
+ NSParameterAssert(_account != nil);
+ if (!_account) {
+ return NO;
+ }
+ return YES;
+}
+
+- (instancetype) init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+ BOOL success = [self initializeAccountMemory];
+ if (!success) {
+ return nil;
+ }
+ return self;
+}
+
+- (instancetype) initNewAccount {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+ size_t randomLength = olm_create_account_random_length(_account);
+ NSMutableData *random = [OLMUtility randomBytesOfLength:randomLength];
+ size_t accountResult = olm_create_account(_account, random.mutableBytes, random.length);
+ [random resetBytesInRange:NSMakeRange(0, random.length)];
+ if (accountResult == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"error creating account: %s", error);
+ return nil;
+ }
+ return self;
+}
+
+- (NSUInteger) maxOneTimeKeys {
+ return olm_account_max_number_of_one_time_keys(_account);
+}
+
+
+/** public identity keys */
+- (NSDictionary*) identityKeys {
+ size_t identityKeysLength = olm_account_identity_keys_length(_account);
+ uint8_t *identityKeysBytes = malloc(identityKeysLength);
+ if (!identityKeysBytes) {
+ return nil;
+ }
+ size_t result = olm_account_identity_keys(_account, identityKeysBytes, identityKeysLength);
+ if (result == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"error getting id keys: %s", error);
+ free(identityKeysBytes);
+ return nil;
+ }
+ NSData *idKeyData = [NSData dataWithBytesNoCopy:identityKeysBytes length:identityKeysLength freeWhenDone:YES];
+ NSError *error = nil;
+ NSDictionary *keysDictionary = [NSJSONSerialization JSONObjectWithData:idKeyData options:0 error:&error];
+ if (error) {
+ NSLog(@"Could not decode JSON: %@", error.localizedDescription);
+ }
+ return keysDictionary;
+}
+
+- (NSString *)signMessage:(NSData *)messageData {
+ size_t signatureLength = olm_account_signature_length(_account);
+ uint8_t *signatureBytes = malloc(signatureLength);
+ if (!signatureBytes) {
+ return nil;
+ }
+
+ size_t result = olm_account_sign(_account, messageData.bytes, messageData.length, signatureBytes, signatureLength);
+ if (result == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"error signing message: %s", error);
+ free(signatureBytes);
+ return nil;
+ }
+
+ NSData *signatureData = [NSData dataWithBytesNoCopy:signatureBytes length:signatureLength freeWhenDone:YES];
+ return [[NSString alloc] initWithData:signatureData encoding:NSUTF8StringEncoding];
+}
+
+- (NSDictionary*) oneTimeKeys {
+ size_t otkLength = olm_account_one_time_keys_length(_account);
+ uint8_t *otkBytes = malloc(otkLength);
+ if (!otkBytes) {
+ return nil;
+ }
+ size_t result = olm_account_one_time_keys(_account, otkBytes, otkLength);
+ if (result == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"error getting id keys: %s", error);
+ free(otkBytes);
+ }
+ NSData *otk = [NSData dataWithBytesNoCopy:otkBytes length:otkLength freeWhenDone:YES];
+ NSError *error = nil;
+ NSDictionary *keysDictionary = [NSJSONSerialization JSONObjectWithData:otk options:0 error:&error];
+ if (error) {
+ NSLog(@"Could not decode JSON: %@", error.localizedDescription);
+ }
+ return keysDictionary;
+}
+
+
+- (void) generateOneTimeKeys:(NSUInteger)numberOfKeys {
+ size_t randomLength = olm_account_generate_one_time_keys_random_length(_account, numberOfKeys);
+ NSMutableData *random = [OLMUtility randomBytesOfLength:randomLength];
+ size_t result = olm_account_generate_one_time_keys(_account, numberOfKeys, random.mutableBytes, random.length);
+ [random resetBytesInRange:NSMakeRange(0, random.length)];
+ if (result == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"error generating keys: %s", error);
+ }
+}
+
+- (BOOL) removeOneTimeKeysForSession:(OLMSession *)session {
+ NSParameterAssert(session != nil);
+ if (!session) {
+ return NO;
+ }
+ size_t result = olm_remove_one_time_keys(self.account, session.session);
+ if (result == olm_error()) {
+ const char *error = olm_account_last_error(_account);
+ NSLog(@"olm_remove_one_time_keys error: %s", error);
+ return NO;
+ }
+ return YES;
+}
+
+- (void)markOneTimeKeysAsPublished
+{
+ olm_account_mark_keys_as_published(self.account);
+}
+
+#pragma mark OLMSerializable
+
+/** Initializes from encrypted serialized data. Will throw error if invalid key or invalid base64. */
+- (instancetype) initWithSerializedData:(NSString*)serializedData key:(NSData*)key error:(NSError**)error {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+ NSParameterAssert(key.length > 0);
+ NSParameterAssert(serializedData.length > 0);
+ if (key.length == 0 || serializedData.length == 0) {
+ if (error) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: @"Bad length."}];
+ }
+ return nil;
+ }
+ NSMutableData *pickle = [serializedData dataUsingEncoding:NSUTF8StringEncoding].mutableCopy;
+ size_t result = olm_unpickle_account(_account, key.bytes, key.length, pickle.mutableBytes, pickle.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_account_last_error(_account);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ return self;
+}
+
+/** Serializes and encrypts object data, outputs base64 blob */
+- (NSString*) serializeDataWithKey:(NSData*)key error:(NSError**)error {
+ NSParameterAssert(key.length > 0);
+ size_t length = olm_pickle_account_length(_account);
+ NSMutableData *pickled = [NSMutableData dataWithLength:length];
+ size_t result = olm_pickle_account(_account, key.bytes, key.length, pickled.mutableBytes, pickled.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_account_last_error(_account);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ NSString *pickleString = [[NSString alloc] initWithData:pickled encoding:NSUTF8StringEncoding];
+ return pickleString;
+}
+
+#pragma mark NSSecureCoding
+
++ (BOOL) supportsSecureCoding {
+ return YES;
+}
+
+#pragma mark NSCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+ NSString *version = [decoder decodeObjectOfClass:[NSString class] forKey:@"version"];
+
+ NSError *error = nil;
+
+ if ([version isEqualToString:@"1"]) {
+ NSString *pickle = [decoder decodeObjectOfClass:[NSString class] forKey:@"pickle"];
+ NSData *key = [decoder decodeObjectOfClass:[NSData class] forKey:@"key"];
+
+ self = [self initWithSerializedData:pickle key:key error:&error];
+ }
+
+ NSParameterAssert(error == nil);
+ NSParameterAssert(self != nil);
+ if (!self) {
+ return nil;
+ }
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)encoder {
+ NSData *key = [OLMUtility randomBytesOfLength:32];
+ NSError *error = nil;
+ NSString *pickle = [self serializeDataWithKey:key error:&error];
+ NSParameterAssert(pickle.length > 0 && error == nil);
+
+ [encoder encodeObject:pickle forKey:@"pickle"];
+ [encoder encodeObject:key forKey:@"key"];
+ [encoder encodeObject:@"1" forKey:@"version"];
+}
+
+
+@end
diff --git a/xcode/OLMKit/OLMAccount_Private.h b/xcode/OLMKit/OLMAccount_Private.h
new file mode 100644
index 0000000..313ab71
--- /dev/null
+++ b/xcode/OLMKit/OLMAccount_Private.h
@@ -0,0 +1,25 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#include "olm/olm.h"
+
+@interface OLMAccount()
+
+@property (nonatomic) OlmAccount *account;
+
+@end
diff --git a/xcode/OLMKit/OLMInboundGroupSession.h b/xcode/OLMKit/OLMInboundGroupSession.h
new file mode 100644
index 0000000..ede68e3
--- /dev/null
+++ b/xcode/OLMKit/OLMInboundGroupSession.h
@@ -0,0 +1,30 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "OLMSerializable.h"
+
+@interface OLMInboundGroupSession : NSObject <OLMSerializable, NSSecureCoding>
+
+- (instancetype) initInboundGroupSessionWithSessionKey:(NSString*)sessionKey error:(NSError**)error;
+
+- (NSString*)sessionIdentifier;
+
+/** base64 ciphertext -> UTF-8 plaintext */
+- (NSString*)decryptMessage:(NSString*)message messageIndex:(NSUInteger*)messageIndex error:(NSError**)error;
+
+@end
diff --git a/xcode/OLMKit/OLMInboundGroupSession.m b/xcode/OLMKit/OLMInboundGroupSession.m
new file mode 100644
index 0000000..6ef51c3
--- /dev/null
+++ b/xcode/OLMKit/OLMInboundGroupSession.m
@@ -0,0 +1,244 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMInboundGroupSession.h"
+
+#import "OLMUtility.h"
+#include "olm/olm.h"
+
+@interface OLMInboundGroupSession ()
+{
+ OlmInboundGroupSession *session;
+}
+@end
+
+
+@implementation OLMInboundGroupSession
+
+- (void)dealloc {
+ olm_clear_inbound_group_session(session);
+ free(session);
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (self)
+ {
+ session = malloc(olm_inbound_group_session_size());
+ if (session) {
+ session = olm_inbound_group_session(session);
+ }
+
+ if (!session) {
+ return nil;
+ }
+ }
+ return self;
+}
+
+- (instancetype)initInboundGroupSessionWithSessionKey:(NSString *)sessionKey error:(NSError**)error {
+ self = [self init];
+ if (self) {
+ NSData *sessionKeyData = [sessionKey dataUsingEncoding:NSUTF8StringEncoding];
+ size_t result = olm_init_inbound_group_session(session, sessionKeyData.bytes, sessionKeyData.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_inbound_group_session_last_error(session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_init_inbound_group_session error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_init_inbound_group_session error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ }
+ return self;
+}
+
+- (NSString *)sessionIdentifier {
+ size_t length = olm_inbound_group_session_id_length(session);
+ NSMutableData *idData = [NSMutableData dataWithLength:length];
+ if (!idData) {
+ return nil;
+ }
+ size_t result = olm_inbound_group_session_id(session, idData.mutableBytes, idData.length);
+ if (result == olm_error()) {
+ const char *error = olm_inbound_group_session_last_error(session);
+ NSLog(@"olm_inbound_group_session_id error: %s", error);
+ return nil;
+ }
+ NSString *idString = [[NSString alloc] initWithData:idData encoding:NSUTF8StringEncoding];
+ return idString;
+}
+
+- (NSString *)decryptMessage:(NSString *)message messageIndex:(NSUInteger*)messageIndex error:(NSError**)error
+{
+ NSParameterAssert(message != nil);
+ NSData *messageData = [message dataUsingEncoding:NSUTF8StringEncoding];
+ if (!messageData) {
+ return nil;
+ }
+ NSMutableData *mutMessage = messageData.mutableCopy;
+ size_t maxPlaintextLength = olm_group_decrypt_max_plaintext_length(session, mutMessage.mutableBytes, mutMessage.length);
+ if (maxPlaintextLength == olm_error()) {
+ const char *olm_error = olm_inbound_group_session_last_error(session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_group_decrypt_max_plaintext_length error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_group_decrypt_max_plaintext_length error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ // message buffer is destroyed by olm_group_decrypt_max_plaintext_length
+ mutMessage = messageData.mutableCopy;
+ NSMutableData *plaintextData = [NSMutableData dataWithLength:maxPlaintextLength];
+
+ uint32_t message_index;
+ size_t plaintextLength = olm_group_decrypt(session, mutMessage.mutableBytes, mutMessage.length, plaintextData.mutableBytes, plaintextData.length, &message_index);
+ if (plaintextLength == olm_error()) {
+ const char *olm_error = olm_inbound_group_session_last_error(session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_group_decrypt error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_group_decrypt error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ plaintextData.length = plaintextLength;
+ NSString *plaintext = [[NSString alloc] initWithData:plaintextData encoding:NSUTF8StringEncoding];
+ [plaintextData resetBytesInRange:NSMakeRange(0, plaintextData.length)];
+
+ if (messageIndex)
+ {
+ *messageIndex = message_index;
+ }
+
+ return plaintext;
+}
+
+
+#pragma mark OLMSerializable
+
+/** Initializes from encrypted serialized data. Will throw error if invalid key or invalid base64. */
+- (instancetype) initWithSerializedData:(NSString *)serializedData key:(NSData *)key error:(NSError *__autoreleasing *)error {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+ NSParameterAssert(key.length > 0);
+ NSParameterAssert(serializedData.length > 0);
+ if (key.length == 0 || serializedData.length == 0) {
+ if (error) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: @"Bad length."}];
+ }
+ return nil;
+ }
+ NSMutableData *pickle = [serializedData dataUsingEncoding:NSUTF8StringEncoding].mutableCopy;
+ size_t result = olm_unpickle_inbound_group_session(session, key.bytes, key.length, pickle.mutableBytes, pickle.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_inbound_group_session_last_error(session);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ return self;
+}
+
+/** Serializes and encrypts object data, outputs base64 blob */
+- (NSString*) serializeDataWithKey:(NSData*)key error:(NSError**)error {
+ NSParameterAssert(key.length > 0);
+ size_t length = olm_pickle_inbound_group_session_length(session);
+ NSMutableData *pickled = [NSMutableData dataWithLength:length];
+ size_t result = olm_pickle_inbound_group_session(session, key.bytes, key.length, pickled.mutableBytes, pickled.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_inbound_group_session_last_error(session);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ NSString *pickleString = [[NSString alloc] initWithData:pickled encoding:NSUTF8StringEncoding];
+ return pickleString;
+}
+
+#pragma mark NSSecureCoding
+
++ (BOOL) supportsSecureCoding {
+ return YES;
+}
+
+#pragma mark NSCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+ NSString *version = [decoder decodeObjectOfClass:[NSString class] forKey:@"version"];
+
+ NSError *error = nil;
+
+ if ([version isEqualToString:@"1"]) {
+ NSString *pickle = [decoder decodeObjectOfClass:[NSString class] forKey:@"pickle"];
+ NSData *key = [decoder decodeObjectOfClass:[NSData class] forKey:@"key"];
+
+ self = [self initWithSerializedData:pickle key:key error:&error];
+ }
+
+ NSParameterAssert(error == nil);
+ NSParameterAssert(self != nil);
+ if (!self) {
+ return nil;
+ }
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)encoder {
+ NSData *key = [OLMUtility randomBytesOfLength:32];
+ NSError *error = nil;
+ NSString *pickle = [self serializeDataWithKey:key error:&error];
+ NSParameterAssert(pickle.length > 0 && error == nil);
+
+ [encoder encodeObject:pickle forKey:@"pickle"];
+ [encoder encodeObject:key forKey:@"key"];
+ [encoder encodeObject:@"1" forKey:@"version"];
+}
+
+@end
diff --git a/xcode/OLMKit/OLMKit.h b/xcode/OLMKit/OLMKit.h
new file mode 100644
index 0000000..34db111
--- /dev/null
+++ b/xcode/OLMKit/OLMKit.h
@@ -0,0 +1,31 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <UIKit/UIKit.h>
+
+//! Project version string for OLMKit, the same as libolm.
+NSString *OLMKitVersionString();
+
+// In this header, you should import all the public headers of your framework using statements like #import <OLMKit/PublicHeader.h>
+
+#import <OLMKit/OLMAccount.h>
+#import <OLMKit/OLMSession.h>
+#import <OLMKit/OLMMessage.h>
+#import <OLMKit/OLMUtility.h>
+#import <OLMKit/OLMInboundGroupSession.h>
+#import <OLMKit/OLMOutboundGroupSession.h>
diff --git a/xcode/OLMKit/OLMKit.m b/xcode/OLMKit/OLMKit.m
new file mode 100644
index 0000000..e7bfd25
--- /dev/null
+++ b/xcode/OLMKit/OLMKit.m
@@ -0,0 +1,29 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMKit.h"
+
+#include "olm/olm.h"
+
+NSString *OLMKitVersionString()
+{
+ uint8_t major, minor, patch;
+
+ olm_get_library_version(&major, &minor, &patch);
+
+ return [NSString stringWithFormat:@"%tu.%tu.%tu", major, minor, patch];
+}
diff --git a/xcode/OLMKit/OLMMessage.h b/xcode/OLMKit/OLMMessage.h
new file mode 100644
index 0000000..b6e8c8f
--- /dev/null
+++ b/xcode/OLMKit/OLMMessage.h
@@ -0,0 +1,38 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+/*
+ from olm.hh
+ static const size_t OLM_MESSAGE_TYPE_PRE_KEY = 0;
+ static const size_t OLM_MESSAGE_TYPE_MESSAGE = 1;
+ */
+typedef NS_ENUM(NSInteger, OLMMessageType) {
+ OLMMessageTypePreKey = 0,
+ OLMMessageTypeMessage = 1
+};
+
+@interface OLMMessage : NSObject
+
+@property (nonatomic, copy, readonly, nonnull) NSString *ciphertext;
+@property (readonly) OLMMessageType type;
+
+- (nullable instancetype) initWithCiphertext:(nonnull NSString*)ciphertext type:(OLMMessageType)type;
+
+@end
diff --git a/xcode/OLMKit/OLMMessage.m b/xcode/OLMKit/OLMMessage.m
new file mode 100644
index 0000000..949f834
--- /dev/null
+++ b/xcode/OLMKit/OLMMessage.m
@@ -0,0 +1,34 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMMessage.h"
+
+@implementation OLMMessage
+
+- (nullable instancetype) initWithCiphertext:(nonnull NSString*)ciphertext type:(OLMMessageType)type {
+ NSParameterAssert(ciphertext != nil);
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+ _ciphertext = [ciphertext copy];
+ _type = type;
+ return self;
+}
+
+@end
diff --git a/xcode/OLMKit/OLMOutboundGroupSession.h b/xcode/OLMKit/OLMOutboundGroupSession.h
new file mode 100644
index 0000000..c979b61
--- /dev/null
+++ b/xcode/OLMKit/OLMOutboundGroupSession.h
@@ -0,0 +1,32 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "OLMSerializable.h"
+
+@interface OLMOutboundGroupSession : NSObject <OLMSerializable, NSSecureCoding>
+
+- (instancetype) initOutboundGroupSession;
+
+- (NSString*)sessionIdentifier;
+- (NSUInteger)messageIndex;
+- (NSString*)sessionKey;
+
+/** UTF-8 plaintext -> base64 ciphertext */
+- (NSString*)encryptMessage:(NSString*)message error:(NSError**)error;
+
+@end
diff --git a/xcode/OLMKit/OLMOutboundGroupSession.m b/xcode/OLMKit/OLMOutboundGroupSession.m
new file mode 100644
index 0000000..a3421fd
--- /dev/null
+++ b/xcode/OLMKit/OLMOutboundGroupSession.m
@@ -0,0 +1,220 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMOutboundGroupSession.h"
+
+#import "OLMUtility.h"
+#include "olm/olm.h"
+
+@interface OLMOutboundGroupSession ()
+{
+ OlmOutboundGroupSession *session;
+}
+@end
+
+@implementation OLMOutboundGroupSession
+
+- (void)dealloc {
+ olm_clear_outbound_group_session(session);
+ free(session);
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (self)
+ {
+ session = malloc(olm_outbound_group_session_size());
+ if (session) {
+ session = olm_outbound_group_session(session);
+ }
+
+ if (!session) {
+ return nil;
+ }
+ }
+ return self;
+}
+
+- (instancetype)initOutboundGroupSession {
+ self = [self init];
+ if (self) {
+ NSMutableData *random = [OLMUtility randomBytesOfLength:olm_init_outbound_group_session_random_length(session)];
+
+ size_t result = olm_init_outbound_group_session(session, random.mutableBytes, random.length);
+ [random resetBytesInRange:NSMakeRange(0, random.length)];
+ if (result == olm_error()) {
+ const char *error = olm_outbound_group_session_last_error(session);
+ NSLog(@"olm_init_outbound_group_session error: %s", error);
+ return nil;
+ }
+ }
+ return self;
+}
+
+- (NSString *)sessionIdentifier {
+ size_t length = olm_outbound_group_session_id_length(session);
+ NSMutableData *idData = [NSMutableData dataWithLength:length];
+ if (!idData) {
+ return nil;
+ }
+ size_t result = olm_outbound_group_session_id(session, idData.mutableBytes, idData.length);
+ if (result == olm_error()) {
+ const char *error = olm_outbound_group_session_last_error(session);
+ NSLog(@"olm_outbound_group_session_id error: %s", error);
+ return nil;
+ }
+ NSString *idString = [[NSString alloc] initWithData:idData encoding:NSUTF8StringEncoding];
+ return idString;
+}
+
+- (NSUInteger)messageIndex {
+ return olm_outbound_group_session_message_index(session);
+}
+
+- (NSString *)sessionKey {
+ size_t length = olm_outbound_group_session_key_length(session);
+ NSMutableData *sessionKeyData = [NSMutableData dataWithLength:length];
+ if (!sessionKeyData) {
+ return nil;
+ }
+ size_t result = olm_outbound_group_session_key(session, sessionKeyData.mutableBytes, sessionKeyData.length);
+ if (result == olm_error()) {
+ const char *error = olm_outbound_group_session_last_error(session);
+ NSLog(@"olm_outbound_group_session_key error: %s", error);
+ return nil;
+ }
+ NSString *sessionKey = [[NSString alloc] initWithData:sessionKeyData encoding:NSUTF8StringEncoding];
+ [sessionKeyData resetBytesInRange:NSMakeRange(0, sessionKeyData.length)];
+ return sessionKey;
+}
+
+- (NSString *)encryptMessage:(NSString *)message error:(NSError**)error {
+ NSData *plaintextData = [message dataUsingEncoding:NSUTF8StringEncoding];
+ size_t ciphertextLength = olm_group_encrypt_message_length(session, plaintextData.length);
+ NSMutableData *ciphertext = [NSMutableData dataWithLength:ciphertextLength];
+ if (!ciphertext) {
+ return nil;
+ }
+ size_t result = olm_group_encrypt(session, plaintextData.bytes, plaintextData.length, ciphertext.mutableBytes, ciphertext.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_outbound_group_session_last_error(session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_group_encrypt error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_group_encrypt error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ return [[NSString alloc] initWithData:ciphertext encoding:NSUTF8StringEncoding];
+}
+
+#pragma mark OLMSerializable
+
+/** Initializes from encrypted serialized data. Will throw error if invalid key or invalid base64. */
+- (instancetype) initWithSerializedData:(NSString *)serializedData key:(NSData *)key error:(NSError *__autoreleasing *)error {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+ NSParameterAssert(key.length > 0);
+ NSParameterAssert(serializedData.length > 0);
+ if (key.length == 0 || serializedData.length == 0) {
+ if (error) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: @"Bad length."}];
+ }
+ return nil;
+ }
+ NSMutableData *pickle = [serializedData dataUsingEncoding:NSUTF8StringEncoding].mutableCopy;
+ size_t result = olm_unpickle_outbound_group_session(session, key.bytes, key.length, pickle.mutableBytes, pickle.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_outbound_group_session_last_error(session);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ return self;
+}
+
+/** Serializes and encrypts object data, outputs base64 blob */
+- (NSString*) serializeDataWithKey:(NSData*)key error:(NSError**)error {
+ NSParameterAssert(key.length > 0);
+ size_t length = olm_pickle_outbound_group_session_length(session);
+ NSMutableData *pickled = [NSMutableData dataWithLength:length];
+ size_t result = olm_pickle_outbound_group_session(session, key.bytes, key.length, pickled.mutableBytes, pickled.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_outbound_group_session_last_error(session);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ NSString *pickleString = [[NSString alloc] initWithData:pickled encoding:NSUTF8StringEncoding];
+ return pickleString;
+}
+
+#pragma mark NSSecureCoding
+
++ (BOOL) supportsSecureCoding {
+ return YES;
+}
+
+#pragma mark NSCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+ NSString *version = [decoder decodeObjectOfClass:[NSString class] forKey:@"version"];
+
+ NSError *error = nil;
+
+ if ([version isEqualToString:@"1"]) {
+ NSString *pickle = [decoder decodeObjectOfClass:[NSString class] forKey:@"pickle"];
+ NSData *key = [decoder decodeObjectOfClass:[NSData class] forKey:@"key"];
+
+ self = [self initWithSerializedData:pickle key:key error:&error];
+ }
+
+ NSParameterAssert(error == nil);
+ NSParameterAssert(self != nil);
+ if (!self) {
+ return nil;
+ }
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)encoder {
+ NSData *key = [OLMUtility randomBytesOfLength:32];
+ NSError *error = nil;
+ NSString *pickle = [self serializeDataWithKey:key error:&error];
+ NSParameterAssert(pickle.length > 0 && error == nil);
+
+ [encoder encodeObject:pickle forKey:@"pickle"];
+ [encoder encodeObject:key forKey:@"key"];
+ [encoder encodeObject:@"1" forKey:@"version"];
+}
+
+@end
diff --git a/xcode/OLMKit/OLMSerializable.h b/xcode/OLMKit/OLMSerializable.h
new file mode 100644
index 0000000..e929903
--- /dev/null
+++ b/xcode/OLMKit/OLMSerializable.h
@@ -0,0 +1,29 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@protocol OLMSerializable <NSObject>
+
+/** Initializes from encrypted serialized data. Will throw error if invalid key or invalid base64. */
+- (instancetype) initWithSerializedData:(NSString*)serializedData key:(NSData*)key error:(NSError**)error;
+
+/** Serializes and encrypts object data, outputs base64 blob */
+- (NSString*) serializeDataWithKey:(NSData*)key error:(NSError**)error;
+
+@end
diff --git a/xcode/OLMKit/OLMSession.h b/xcode/OLMKit/OLMSession.h
new file mode 100644
index 0000000..0446f98
--- /dev/null
+++ b/xcode/OLMKit/OLMSession.h
@@ -0,0 +1,44 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import "OLMSerializable.h"
+#import "OLMAccount.h"
+#import "OLMMessage.h"
+
+@interface OLMSession : NSObject <OLMSerializable, NSSecureCoding>
+
+- (instancetype) initOutboundSessionWithAccount:(OLMAccount*)account theirIdentityKey:(NSString*)theirIdentityKey theirOneTimeKey:(NSString*)theirOneTimeKey error:(NSError**)error;
+
+- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account oneTimeKeyMessage:(NSString*)oneTimeKeyMessage error:(NSError**)error;
+
+- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account theirIdentityKey:(NSString*)theirIdentityKey oneTimeKeyMessage:(NSString*)oneTimeKeyMessage error:(NSError**)error;
+
+- (NSString*) sessionIdentifier;
+
+- (BOOL) matchesInboundSession:(NSString*)oneTimeKeyMessage;
+
+- (BOOL) matchesInboundSessionFrom:(NSString*)theirIdentityKey oneTimeKeyMessage:(NSString *)oneTimeKeyMessage;
+
+/** UTF-8 plaintext -> base64 ciphertext */
+- (OLMMessage*) encryptMessage:(NSString*)message error:(NSError**)error;
+
+/** base64 ciphertext -> UTF-8 plaintext */
+- (NSString*) decryptMessage:(OLMMessage*)message error:(NSError**)error;
+
+@end
diff --git a/xcode/OLMKit/OLMSession.m b/xcode/OLMKit/OLMSession.m
new file mode 100644
index 0000000..8c29113
--- /dev/null
+++ b/xcode/OLMKit/OLMSession.m
@@ -0,0 +1,381 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMSession.h"
+#import "OLMUtility.h"
+#import "OLMAccount_Private.h"
+#import "OLMSession_Private.h"
+#include "olm/olm.h"
+
+@implementation OLMSession
+
+- (void) dealloc {
+ olm_clear_session(_session);
+ free(_session);
+}
+
+- (BOOL) initializeSessionMemory {
+ size_t size = olm_session_size();
+ _session = malloc(size);
+ NSParameterAssert(_session != nil);
+ if (!_session) {
+ return NO;
+ }
+ _session = olm_session(_session);
+ NSParameterAssert(_session != nil);
+ if (!_session) {
+ return NO;
+ }
+ return YES;
+}
+
+- (instancetype) init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+ BOOL success = [self initializeSessionMemory];
+ if (!success) {
+ return nil;
+ }
+ return self;
+}
+
+- (instancetype) initWithAccount:(OLMAccount*)account {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+ NSParameterAssert(account != nil && account.account != NULL);
+ if (account == nil || account.account == NULL) {
+ return nil;
+ }
+ _account = account;
+ return self;
+}
+
+- (instancetype) initOutboundSessionWithAccount:(OLMAccount*)account theirIdentityKey:(NSString*)theirIdentityKey theirOneTimeKey:(NSString*)theirOneTimeKey error:(NSError**)error {
+ self = [self initWithAccount:account];
+ if (!self) {
+ return nil;
+ }
+ NSMutableData *random = [OLMUtility randomBytesOfLength:olm_create_outbound_session_random_length(_session)];
+ NSData *idKey = [theirIdentityKey dataUsingEncoding:NSUTF8StringEncoding];
+ NSData *otKey = [theirOneTimeKey dataUsingEncoding:NSUTF8StringEncoding];
+ size_t result = olm_create_outbound_session(_session, account.account, idKey.bytes, idKey.length, otKey.bytes, otKey.length, random.mutableBytes, random.length);
+ [random resetBytesInRange:NSMakeRange(0, random.length)];
+ if (result == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_create_outbound_session error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_create_outbound_session error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ return self;
+}
+
+- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account oneTimeKeyMessage:(NSString*)oneTimeKeyMessage error:(NSError**)error {
+ self = [self initWithAccount:account];
+ if (!self) {
+ return nil;
+ }
+ NSMutableData *otk = [NSMutableData dataWithData:[oneTimeKeyMessage dataUsingEncoding:NSUTF8StringEncoding]];
+ size_t result = olm_create_inbound_session(_session, account.account, otk.mutableBytes, oneTimeKeyMessage.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_create_inbound_session error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_create_inbound_session error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ return self;
+}
+
+- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account theirIdentityKey:(NSString*)theirIdentityKey oneTimeKeyMessage:(NSString*)oneTimeKeyMessage error:(NSError**)error {
+ self = [self initWithAccount:account];
+ if (!self) {
+ return nil;
+ }
+ NSData *idKey = [theirIdentityKey dataUsingEncoding:NSUTF8StringEncoding];
+ NSMutableData *otk = [NSMutableData dataWithData:[oneTimeKeyMessage dataUsingEncoding:NSUTF8StringEncoding]];
+ size_t result = olm_create_inbound_session_from(_session, account.account, idKey.bytes, idKey.length, otk.mutableBytes, otk.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_create_inbound_session_from error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_create_inbound_session_from error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ return self;
+}
+
+- (NSString*) sessionIdentifier {
+ size_t length = olm_session_id_length(_session);
+ NSMutableData *idData = [NSMutableData dataWithLength:length];
+ if (!idData) {
+ return nil;
+ }
+ size_t result = olm_session_id(_session, idData.mutableBytes, idData.length);
+ if (result == olm_error()) {
+ const char *error = olm_session_last_error(_session);
+ NSLog(@"olm_session_id error: %s", error);
+ return nil;
+ }
+ NSString *idString = [[NSString alloc] initWithData:idData encoding:NSUTF8StringEncoding];
+ return idString;
+}
+
+- (BOOL)matchesInboundSession:(NSString *)oneTimeKeyMessage {
+ NSMutableData *otk = [NSMutableData dataWithData:[oneTimeKeyMessage dataUsingEncoding:NSUTF8StringEncoding]];
+
+ size_t result = olm_matches_inbound_session(_session, otk.mutableBytes, otk.length);
+ if (result == 1) {
+ return YES;
+ }
+ else {
+ if (result == olm_error()) {
+ const char *error = olm_session_last_error(_session);
+ NSLog(@"olm_matches_inbound_session error: %s", error);
+ }
+ return NO;
+ }
+}
+
+- (BOOL)matchesInboundSessionFrom:(NSString *)theirIdentityKey oneTimeKeyMessage:(NSString *)oneTimeKeyMessage {
+ NSData *idKey = [theirIdentityKey dataUsingEncoding:NSUTF8StringEncoding];
+ NSMutableData *otk = [NSMutableData dataWithData:[oneTimeKeyMessage dataUsingEncoding:NSUTF8StringEncoding]];
+
+ size_t result = olm_matches_inbound_session_from(_session,
+ idKey.bytes, idKey.length,
+ otk.mutableBytes, otk.length);
+ if (result == 1) {
+ return YES;
+ }
+ else {
+ if (result == olm_error()) {
+ const char *error = olm_session_last_error(_session);
+ NSLog(@"olm_matches_inbound_session error: %s", error);
+ }
+ return NO;
+ }
+}
+
+- (OLMMessage*) encryptMessage:(NSString*)message error:(NSError**)error {
+ size_t messageType = olm_encrypt_message_type(_session);
+ size_t randomLength = olm_encrypt_random_length(_session);
+ NSMutableData *random = [OLMUtility randomBytesOfLength:randomLength];
+ NSData *plaintextData = [message dataUsingEncoding:NSUTF8StringEncoding];
+ size_t ciphertextLength = olm_encrypt_message_length(_session, plaintextData.length);
+ NSMutableData *ciphertext = [NSMutableData dataWithLength:ciphertextLength];
+ if (!ciphertext) {
+ return nil;
+ }
+ size_t result = olm_encrypt(_session, plaintextData.bytes, plaintextData.length, random.mutableBytes, random.length, ciphertext.mutableBytes, ciphertext.length);
+ [random resetBytesInRange:NSMakeRange(0, random.length)];
+ if (result == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_encrypt error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_encrypt error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ NSString *ciphertextString = [[NSString alloc] initWithData:ciphertext encoding:NSUTF8StringEncoding];
+ OLMMessage *encryptedMessage = [[OLMMessage alloc] initWithCiphertext:ciphertextString type:messageType];
+ return encryptedMessage;
+}
+
+- (NSString*) decryptMessage:(OLMMessage*)message error:(NSError**)error {
+ NSParameterAssert(message != nil);
+ NSData *messageData = [message.ciphertext dataUsingEncoding:NSUTF8StringEncoding];
+ if (!messageData) {
+ return nil;
+ }
+ NSMutableData *mutMessage = messageData.mutableCopy;
+ size_t maxPlaintextLength = olm_decrypt_max_plaintext_length(_session, message.type, mutMessage.mutableBytes, mutMessage.length);
+ if (maxPlaintextLength == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_decrypt_max_plaintext_length error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_decrypt_max_plaintext_length error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ // message buffer is destroyed by olm_decrypt_max_plaintext_length
+ mutMessage = messageData.mutableCopy;
+ NSMutableData *plaintextData = [NSMutableData dataWithLength:maxPlaintextLength];
+ size_t plaintextLength = olm_decrypt(_session, message.type, mutMessage.mutableBytes, mutMessage.length, plaintextData.mutableBytes, plaintextData.length);
+ if (plaintextLength == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ NSLog(@"olm_decrypt error: %@", errorString);
+
+ if (error && olm_error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain
+ code:0
+ userInfo:@{
+ NSLocalizedDescriptionKey: errorString,
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:@"olm_decrypt error: %@", errorString]
+ }];
+ }
+
+ return nil;
+ }
+ plaintextData.length = plaintextLength;
+ NSString *plaintext = [[NSString alloc] initWithData:plaintextData encoding:NSUTF8StringEncoding];
+ [plaintextData resetBytesInRange:NSMakeRange(0, plaintextData.length)];
+ return plaintext;
+}
+
+#pragma mark OLMSerializable
+
+/** Initializes from encrypted serialized data. Will throw error if invalid key or invalid base64. */
+- (instancetype) initWithSerializedData:(NSString*)serializedData key:(NSData*)key error:(NSError**)error {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+ NSParameterAssert(key.length > 0);
+ NSParameterAssert(serializedData.length > 0);
+ if (key.length == 0 || serializedData.length == 0) {
+ if (error) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: @"Bad length."}];
+ }
+ return nil;
+ }
+ NSMutableData *pickle = [serializedData dataUsingEncoding:NSUTF8StringEncoding].mutableCopy;
+ size_t result = olm_unpickle_session(_session, key.bytes, key.length, pickle.mutableBytes, pickle.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ return self;
+}
+
+/** Serializes and encrypts object data, outputs base64 blob */
+- (NSString*) serializeDataWithKey:(NSData*)key error:(NSError**)error {
+ NSParameterAssert(key.length > 0);
+ size_t length = olm_pickle_session_length(_session);
+ NSMutableData *pickled = [NSMutableData dataWithLength:length];
+ size_t result = olm_pickle_session(_session, key.bytes, key.length, pickled.mutableBytes, pickled.length);
+ if (result == olm_error()) {
+ const char *olm_error = olm_session_last_error(_session);
+ NSString *errorString = [NSString stringWithUTF8String:olm_error];
+ if (error && errorString) {
+ *error = [NSError errorWithDomain:OLMErrorDomain code:0 userInfo:@{NSLocalizedDescriptionKey: errorString}];
+ }
+ return nil;
+ }
+ NSString *pickleString = [[NSString alloc] initWithData:pickled encoding:NSUTF8StringEncoding];
+ return pickleString;
+}
+
+#pragma mark NSSecureCoding
+
++ (BOOL) supportsSecureCoding {
+ return YES;
+}
+
+#pragma mark NSCoding
+
+- (id)initWithCoder:(NSCoder *)decoder {
+ NSString *version = [decoder decodeObjectOfClass:[NSString class] forKey:@"version"];
+
+ NSError *error = nil;
+
+ if ([version isEqualToString:@"1"]) {
+ NSString *pickle = [decoder decodeObjectOfClass:[NSString class] forKey:@"pickle"];
+ NSData *key = [decoder decodeObjectOfClass:[NSData class] forKey:@"key"];
+
+ self = [self initWithSerializedData:pickle key:key error:&error];
+ }
+
+ NSParameterAssert(error == nil);
+ NSParameterAssert(self != nil);
+ if (!self) {
+ return nil;
+ }
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)encoder {
+ NSData *key = [OLMUtility randomBytesOfLength:32];
+ NSError *error = nil;
+ NSString *pickle = [self serializeDataWithKey:key error:&error];
+ NSParameterAssert(pickle.length > 0 && error == nil);
+
+ [encoder encodeObject:pickle forKey:@"pickle"];
+ [encoder encodeObject:key forKey:@"key"];
+ [encoder encodeObject:@"1" forKey:@"version"];
+}
+
+@end
diff --git a/xcode/OLMKit/OLMSession_Private.h b/xcode/OLMKit/OLMSession_Private.h
new file mode 100644
index 0000000..28ba5e1
--- /dev/null
+++ b/xcode/OLMKit/OLMSession_Private.h
@@ -0,0 +1,26 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#include "olm/olm.h"
+
+@interface OLMSession()
+
+@property (nonatomic) OlmSession *session;
+@property (nonatomic, strong) OLMAccount *account;
+
+@end
diff --git a/xcode/OLMKit/OLMUtility.h b/xcode/OLMKit/OLMUtility.h
new file mode 100644
index 0000000..22e9724
--- /dev/null
+++ b/xcode/OLMKit/OLMUtility.h
@@ -0,0 +1,49 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+FOUNDATION_EXPORT NSString *const OLMErrorDomain;
+
+@interface OLMUtility : NSObject
+
+/**
+ Calculate the SHA-256 hash of the input and encodes it as base64.
+
+ @param message the message to hash.
+ @return the base64-encoded hash value.
+ */
+- (NSString*)sha256:(NSData*)message;
+
+/**
+ Verify an ed25519 signature.
+
+ @param signature the base64-encoded signature to be checked.
+ @param key the ed25519 key.
+ @param message the message which was signed.
+ @param the result error if there is a problem with the verification.
+ If the key was too small then the message will be "OLM.INVALID_BASE64".
+ If the signature was invalid then the message will be "OLM.BAD_MESSAGE_MAC".
+
+ @return YES if valid.
+ */
+- (BOOL)verifyEd25519Signature:(NSString*)signature key:(NSString*)key message:(NSData*)message error:(NSError**)error;
+
++ (NSMutableData*) randomBytesOfLength:(NSUInteger)length;
+
+@end
diff --git a/xcode/OLMKit/OLMUtility.m b/xcode/OLMKit/OLMUtility.m
new file mode 100644
index 0000000..936785a
--- /dev/null
+++ b/xcode/OLMKit/OLMUtility.m
@@ -0,0 +1,121 @@
+/*
+ Copyright 2016 Chris Ballinger
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import "OLMUtility.h"
+
+#include "olm/olm.h"
+
+NSString *const OLMErrorDomain = @"org.matrix.olm";
+
+@interface OLMUtility()
+
+@property (nonatomic) OlmUtility *utility;
+
+@end
+
+@implementation OLMUtility
+
+- (void) dealloc {
+ olm_clear_utility(_utility);
+ free(_utility);
+}
+
+- (BOOL) initializeUtilityMemory {
+ size_t utilitySize = olm_utility_size();
+ _utility = malloc(utilitySize);
+ NSParameterAssert(_utility != nil);
+ if (!_utility) {
+ return NO;
+ }
+ _utility = olm_utility(_utility);
+ NSParameterAssert(_utility != nil);
+ if (!_utility) {
+ return NO;
+ }
+ return YES;
+}
+
+- (instancetype) init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+ BOOL success = [self initializeUtilityMemory];
+ if (!success) {
+ return nil;
+ }
+ return self;
+}
+
+- (NSString *)sha256:(NSData *)message {
+ size_t length = olm_sha256_length(_utility);
+
+ NSMutableData *shaData = [NSMutableData dataWithLength:length];
+ if (!shaData) {
+ return nil;
+ }
+
+ size_t result = olm_sha256(_utility, message.bytes, message.length, shaData.mutableBytes, shaData.length);
+ if (result == olm_error()) {
+ const char *error = olm_utility_last_error(_utility);
+ NSLog(@"olm_sha256 error: %s", error);
+ return nil;
+ }
+
+ NSString *sha = [[NSString alloc] initWithData:shaData encoding:NSUTF8StringEncoding];
+ return sha;
+}
+
+- (BOOL)verifyEd25519Signature:(NSString*)signature key:(NSString*)key message:(NSData*)message error:(NSError**)error {
+
+ NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];
+ NSData *signatureData = [signature dataUsingEncoding:NSUTF8StringEncoding];
+
+ size_t result = olm_ed25519_verify(_utility,
+ keyData.bytes, keyData.length,
+ message.bytes, message.length,
+ (void*)signatureData.bytes, signatureData.length
+ );
+
+ if (result == olm_error()) {
+ if (error) {
+ NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey: [NSString stringWithUTF8String:olm_utility_last_error(_utility)]};
+
+ // @TODO
+ *error = [[NSError alloc] initWithDomain:@"OLMKitErrorDomain" code:0 userInfo:userInfo];
+ }
+ return NO;
+ }
+ else {
+ return YES;
+ }
+}
+
++ (NSMutableData*) randomBytesOfLength:(NSUInteger)length {
+ NSMutableData *randomData = [NSMutableData dataWithLength:length];
+ if (!randomData) {
+ return nil;
+ }
+ int result = SecRandomCopyBytes(kSecRandomDefault, randomData.length, randomData.mutableBytes);
+ if (result != 0) {
+ return nil;
+ }
+ return randomData;
+}
+
+@end
diff --git a/xcode/OLMKitTests/Info.plist b/xcode/OLMKitTests/Info.plist
new file mode 100644
index 0000000..6c6c23c
--- /dev/null
+++ b/xcode/OLMKitTests/Info.plist
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+ <key>CFBundleDevelopmentRegion</key>
+ <string>en</string>
+ <key>CFBundleExecutable</key>
+ <string>$(EXECUTABLE_NAME)</string>
+ <key>CFBundleIdentifier</key>
+ <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+ <key>CFBundleInfoDictionaryVersion</key>
+ <string>6.0</string>
+ <key>CFBundleName</key>
+ <string>$(PRODUCT_NAME)</string>
+ <key>CFBundlePackageType</key>
+ <string>BNDL</string>
+ <key>CFBundleShortVersionString</key>
+ <string>1.0</string>
+ <key>CFBundleVersion</key>
+ <string>1</string>
+</dict>
+</plist>
diff --git a/xcode/OLMKitTests/OLMKitGroupTests.m b/xcode/OLMKitTests/OLMKitGroupTests.m
new file mode 100644
index 0000000..ea82295
--- /dev/null
+++ b/xcode/OLMKitTests/OLMKitGroupTests.m
@@ -0,0 +1,94 @@
+/*
+ Copyright 2016 OpenMarket Ltd
+ Copyright 2016 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <XCTest/XCTest.h>
+
+#import <OLMKit/OLMKit.h>
+
+#include "olm/olm.h"
+
+@interface OLMKitGroupTests : XCTestCase
+
+@end
+
+@implementation OLMKitGroupTests
+
+- (void)setUp {
+ [super setUp];
+ // Put setup code here. This method is called before the invocation of each test method in the class.
+}
+
+- (void)tearDown {
+ // Put teardown code here. This method is called after the invocation of each test method in the class.
+ [super tearDown];
+}
+
+- (void)testAliceAndBob {
+ NSError *error;
+
+ OLMOutboundGroupSession *aliceSession = [[OLMOutboundGroupSession alloc] initOutboundGroupSession];
+ XCTAssertGreaterThan(aliceSession.sessionIdentifier.length, 0);
+ XCTAssertGreaterThan(aliceSession.sessionKey.length, 0);
+ XCTAssertEqual(aliceSession.messageIndex, 0);
+
+ // Store the session key before starting encrypting
+ NSString *sessionKey = aliceSession.sessionKey;
+
+ NSString *message = @"Hello!";
+ NSString *aliceToBobMsg = [aliceSession encryptMessage:message error:&error];
+
+ XCTAssertEqual(aliceSession.messageIndex, 1);
+ XCTAssertGreaterThanOrEqual(aliceToBobMsg.length, 0);
+ XCTAssertNil(error);
+
+ OLMInboundGroupSession *bobSession = [[OLMInboundGroupSession alloc] initInboundGroupSessionWithSessionKey:sessionKey error:&error];
+ XCTAssertEqualObjects(aliceSession.sessionIdentifier, bobSession.sessionIdentifier);
+ XCTAssertNil(error);
+
+ NSUInteger messageIndex;
+
+ NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg messageIndex:&messageIndex error:&error];
+ XCTAssertEqualObjects(message, plaintext);
+
+ XCTAssertEqual(messageIndex, 0);
+ XCTAssertNil(error);
+}
+
+- (void)testOutboundGroupSessionSerialization {
+
+ OLMOutboundGroupSession *aliceSession = [[OLMOutboundGroupSession alloc] initOutboundGroupSession];
+
+ NSData *aliceData = [NSKeyedArchiver archivedDataWithRootObject:aliceSession];
+ OLMOutboundGroupSession *aliceSession2 = [NSKeyedUnarchiver unarchiveObjectWithData:aliceData];
+
+ XCTAssertEqualObjects(aliceSession2.sessionKey, aliceSession.sessionKey);
+ XCTAssertEqualObjects(aliceSession2.sessionIdentifier, aliceSession.sessionIdentifier);
+}
+
+- (void)testInboundGroupSessionSerialization {
+
+ OLMOutboundGroupSession *aliceSession = [[OLMOutboundGroupSession alloc] initOutboundGroupSession];
+
+ OLMInboundGroupSession *bobSession = [[OLMInboundGroupSession alloc] initInboundGroupSessionWithSessionKey:aliceSession.sessionKey error:nil];
+
+ NSData *bobData = [NSKeyedArchiver archivedDataWithRootObject:bobSession];
+ OLMInboundGroupSession *bobSession2 = [NSKeyedUnarchiver unarchiveObjectWithData:bobData];
+
+ XCTAssertEqualObjects(bobSession2.sessionIdentifier, aliceSession.sessionIdentifier);
+}
+
+@end
diff --git a/xcode/OLMKitTests/OLMKitTests.m b/xcode/OLMKitTests/OLMKitTests.m
new file mode 100644
index 0000000..ee02420
--- /dev/null
+++ b/xcode/OLMKitTests/OLMKitTests.m
@@ -0,0 +1,206 @@
+/*
+Copyright 2016 Chris Ballinger
+Copyright 2016 OpenMarket Ltd
+Copyright 2016 Vector Creations Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#import <XCTest/XCTest.h>
+#import <OLMKit/OLMKit.h>
+
+@interface OLMKitTests : XCTestCase
+
+@end
+
+@implementation OLMKitTests
+
+- (void)setUp {
+ [super setUp];
+ // Put setup code here. This method is called before the invocation of each test method in the class.
+}
+
+- (void)tearDown {
+ // Put teardown code here. This method is called after the invocation of each test method in the class.
+ [super tearDown];
+}
+
+- (void)testAliceAndBob {
+ NSError *error;
+
+ OLMAccount *alice = [[OLMAccount alloc] initNewAccount];
+ OLMAccount *bob = [[OLMAccount alloc] initNewAccount];
+ [bob generateOneTimeKeys:5];
+ NSDictionary *bobIdKeys = bob.identityKeys;
+ NSString *bobIdKey = bobIdKeys[@"curve25519"];
+ NSDictionary *bobOneTimeKeys = bob.oneTimeKeys;
+ NSParameterAssert(bobIdKey != nil);
+ NSParameterAssert(bobOneTimeKeys != nil);
+ __block NSString *bobOneTimeKey = nil;
+ NSDictionary *bobOtkCurve25519 = bobOneTimeKeys[@"curve25519"];
+ [bobOtkCurve25519 enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
+ bobOneTimeKey = obj;
+ }];
+ XCTAssert([bobOneTimeKey isKindOfClass:[NSString class]]);
+
+ OLMSession *aliceSession = [[OLMSession alloc] initOutboundSessionWithAccount:alice theirIdentityKey:bobIdKey theirOneTimeKey:bobOneTimeKey error:nil];
+ NSString *message = @"Hello!";
+ OLMMessage *aliceToBobMsg = [aliceSession encryptMessage:message error:&error];
+ XCTAssertNil(error);
+
+ OLMSession *bobSession = [[OLMSession alloc] initInboundSessionWithAccount:bob oneTimeKeyMessage:aliceToBobMsg.ciphertext error:nil];
+ NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg error:&error];
+ XCTAssertEqualObjects(message, plaintext);
+ XCTAssertNil(error);
+
+ XCTAssert([bobSession matchesInboundSession:aliceToBobMsg.ciphertext]);
+ XCTAssertFalse([aliceSession matchesInboundSession:@"ARandomOtkMessage"]);
+
+ NSString *aliceIdKey = alice.identityKeys[@"curve25519"];
+ XCTAssert([bobSession matchesInboundSessionFrom:aliceIdKey oneTimeKeyMessage:aliceToBobMsg.ciphertext]);
+ XCTAssertFalse([bobSession matchesInboundSessionFrom:@"ARandomIdKey" oneTimeKeyMessage:aliceToBobMsg.ciphertext]);
+ XCTAssertFalse([bobSession matchesInboundSessionFrom:aliceIdKey oneTimeKeyMessage:@"ARandomOtkMessage"]);
+
+ BOOL success = [bob removeOneTimeKeysForSession:bobSession];
+ XCTAssertTrue(success);
+}
+
+- (void) testBackAndForth {
+ OLMAccount *alice = [[OLMAccount alloc] initNewAccount];
+ OLMAccount *bob = [[OLMAccount alloc] initNewAccount];
+ [bob generateOneTimeKeys:1];
+ NSDictionary *bobIdKeys = bob.identityKeys;
+ NSString *bobIdKey = bobIdKeys[@"curve25519"];
+ NSDictionary *bobOneTimeKeys = bob.oneTimeKeys;
+ NSParameterAssert(bobIdKey != nil);
+ NSParameterAssert(bobOneTimeKeys != nil);
+ __block NSString *bobOneTimeKey = nil;
+ NSDictionary *bobOtkCurve25519 = bobOneTimeKeys[@"curve25519"];
+ [bobOtkCurve25519 enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
+ bobOneTimeKey = obj;
+ }];
+ XCTAssert([bobOneTimeKey isKindOfClass:[NSString class]]);
+
+ OLMSession *aliceSession = [[OLMSession alloc] initOutboundSessionWithAccount:alice theirIdentityKey:bobIdKey theirOneTimeKey:bobOneTimeKey error:nil];
+ NSString *message = @"Hello I'm Alice!";
+ OLMMessage *aliceToBobMsg = [aliceSession encryptMessage:message error:nil];
+
+ OLMSession *bobSession = [[OLMSession alloc] initInboundSessionWithAccount:bob oneTimeKeyMessage:aliceToBobMsg.ciphertext error:nil];
+ NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg error:nil];
+ XCTAssertEqualObjects(message, plaintext);
+ BOOL success = [bob removeOneTimeKeysForSession:bobSession];
+ XCTAssertTrue(success);
+
+ NSString *msg1 = @"Hello I'm Bob!";
+ NSString *msg2 = @"Isn't life grand?";
+ NSString *msg3 = @"Let's go to the opera.";
+
+ OLMMessage *eMsg1 = [bobSession encryptMessage:msg1 error:nil];
+ OLMMessage *eMsg2 = [bobSession encryptMessage:msg2 error:nil];
+ OLMMessage *eMsg3 = [bobSession encryptMessage:msg3 error:nil];
+
+ NSString *dMsg1 = [aliceSession decryptMessage:eMsg1 error:nil];
+ NSString *dMsg2 = [aliceSession decryptMessage:eMsg2 error:nil];
+ NSString *dMsg3 = [aliceSession decryptMessage:eMsg3 error:nil];
+ XCTAssertEqualObjects(msg1, dMsg1);
+ XCTAssertEqualObjects(msg2, dMsg2);
+ XCTAssertEqualObjects(msg3, dMsg3);
+}
+
+- (void) testAccountSerialization {
+ OLMAccount *bob = [[OLMAccount alloc] initNewAccount];
+ [bob generateOneTimeKeys:5];
+ NSDictionary *bobIdKeys = bob.identityKeys;
+ NSDictionary *bobOneTimeKeys = bob.oneTimeKeys;
+
+ NSData *bobData = [NSKeyedArchiver archivedDataWithRootObject:bob];
+
+ OLMAccount *bob2 = [NSKeyedUnarchiver unarchiveObjectWithData:bobData];
+ NSDictionary *bobIdKeys2 = bob2.identityKeys;
+ NSDictionary *bobOneTimeKeys2 = bob2.oneTimeKeys;
+
+ XCTAssertEqualObjects(bobIdKeys, bobIdKeys2);
+ XCTAssertEqualObjects(bobOneTimeKeys, bobOneTimeKeys2);
+}
+
+- (void) testSessionSerialization {
+ NSError *error;
+
+ OLMAccount *alice = [[OLMAccount alloc] initNewAccount];
+ OLMAccount *bob = [[OLMAccount alloc] initNewAccount];
+ [bob generateOneTimeKeys:1];
+ NSDictionary *bobIdKeys = bob.identityKeys;
+ NSString *bobIdKey = bobIdKeys[@"curve25519"];
+ NSDictionary *bobOneTimeKeys = bob.oneTimeKeys;
+ NSParameterAssert(bobIdKey != nil);
+ NSParameterAssert(bobOneTimeKeys != nil);
+ __block NSString *bobOneTimeKey = nil;
+ NSDictionary *bobOtkCurve25519 = bobOneTimeKeys[@"curve25519"];
+ [bobOtkCurve25519 enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) {
+ bobOneTimeKey = obj;
+ }];
+ XCTAssert([bobOneTimeKey isKindOfClass:[NSString class]]);
+
+ OLMSession *aliceSession = [[OLMSession alloc] initOutboundSessionWithAccount:alice theirIdentityKey:bobIdKey theirOneTimeKey:bobOneTimeKey error:nil];
+ NSString *message = @"Hello I'm Alice!";
+ OLMMessage *aliceToBobMsg = [aliceSession encryptMessage:message error:&error];
+ XCTAssertNil(error);
+
+
+ OLMSession *bobSession = [[OLMSession alloc] initInboundSessionWithAccount:bob oneTimeKeyMessage:aliceToBobMsg.ciphertext error:nil];
+ NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg error:nil];
+ XCTAssertEqualObjects(message, plaintext);
+ BOOL success = [bob removeOneTimeKeysForSession:bobSession];
+ XCTAssertTrue(success);
+
+ NSString *msg1 = @"Hello I'm Bob!";
+ NSString *msg2 = @"Isn't life grand?";
+ NSString *msg3 = @"Let's go to the opera.";
+
+ OLMMessage *eMsg1 = [bobSession encryptMessage:msg1 error:nil];
+ OLMMessage *eMsg2 = [bobSession encryptMessage:msg2 error:nil];
+ OLMMessage *eMsg3 = [bobSession encryptMessage:msg3 error:nil];
+
+ NSData *aliceData = [NSKeyedArchiver archivedDataWithRootObject:aliceSession];
+ OLMSession *alice2 = [NSKeyedUnarchiver unarchiveObjectWithData:aliceData];
+
+ NSString *dMsg1 = [alice2 decryptMessage:eMsg1 error:nil];
+ NSString *dMsg2 = [alice2 decryptMessage:eMsg2 error:nil];
+ NSString *dMsg3 = [alice2 decryptMessage:eMsg3 error:nil];
+ XCTAssertEqualObjects(msg1, dMsg1);
+ XCTAssertEqualObjects(msg2, dMsg2);
+ XCTAssertEqualObjects(msg3, dMsg3);
+}
+
+- (void)testEd25519Signing {
+
+ OLMUtility *olmUtility = [[OLMUtility alloc] init];
+ OLMAccount *alice = [[OLMAccount alloc] initNewAccount];
+
+ NSDictionary *aJSON = @{
+ @"key1": @"value1",
+ @"key2": @"value2"
+ };
+ NSData *message = [NSKeyedArchiver archivedDataWithRootObject:aJSON];
+ NSString *signature = [alice signMessage:message];
+
+
+ NSString *aliceEd25519Key = alice.identityKeys[@"ed25519"];
+
+ NSError *error;
+ BOOL result = [olmUtility verifyEd25519Signature:signature key:aliceEd25519Key message:message error:&error];
+ XCTAssert(result);
+ XCTAssertNil(error);
+}
+
+@end
diff --git a/xcode/Podfile b/xcode/Podfile
new file mode 100644
index 0000000..4c60dd3
--- /dev/null
+++ b/xcode/Podfile
@@ -0,0 +1,7 @@
+target "OLMKit" do
+pod 'OLMKit', :path => '../OLMKit.podspec'
+end
+
+target "OLMKitTests" do
+pod 'OLMKit', :path => '../OLMKit.podspec'
+end \ No newline at end of file
diff --git a/xcode/Podfile.lock b/xcode/Podfile.lock
new file mode 100644
index 0000000..ecafd79
--- /dev/null
+++ b/xcode/Podfile.lock
@@ -0,0 +1,20 @@
+PODS:
+ - OLMKit (2.0.1):
+ - OLMKit/olmc (= 2.0.1)
+ - OLMKit/olmcpp (= 2.0.1)
+ - OLMKit/olmc (2.0.1)
+ - OLMKit/olmcpp (2.0.1)
+
+DEPENDENCIES:
+ - OLMKit (from `../OLMKit.podspec`)
+
+EXTERNAL SOURCES:
+ OLMKit:
+ :path: ../OLMKit.podspec
+
+SPEC CHECKSUMS:
+ OLMKit: 12a35a69f92c7facdd50b559128d1b4a17857ba7
+
+PODFILE CHECKSUM: 4e261dae61d833ec5585ced2473023b98909fd35
+
+COCOAPODS: 1.1.1
diff --git a/xcode/README.rst b/xcode/README.rst
new file mode 100644
index 0000000..d56fa85
--- /dev/null
+++ b/xcode/README.rst
@@ -0,0 +1,26 @@
+OLMKit
+======
+
+OLMKit exposes an Objective-C wrapper to libolm.
+
+The original work by Chris Ballinger can be found at https://github.com/chrisballinger/OLMKit.
+
+Installation
+------------
+You can embed OLMKit to your application project with CocoaPods. The pod for
+the latest OLMKit release is::
+
+ pod 'OLMKit'
+
+Development
+-----------
+Run `pod install` and open `OLMKit.xcworkspace`.
+
+The project contains only tests files. The libolm and the Objective-C wrapper source files are loaded via the OLMKit CocoaPods pod.
+
+To add a new source file, add it to the file system and run `pod update` to make CocoaPods insert it into OLMKit.xcworkspace.
+
+Release
+-------
+See ../README.rst for the release of the CocoaPod.
+