diff options
Diffstat (limited to 'xcode')
25 files changed, 2238 insertions, 0 deletions
diff --git a/xcode/OLMKit.xcodeproj/project.pbxproj b/xcode/OLMKit.xcodeproj/project.pbxproj new file mode 100644 index 0000000..fa02539 --- /dev/null +++ b/xcode/OLMKit.xcodeproj/project.pbxproj @@ -0,0 +1,526 @@ +// !$*UTF8*$! +{ + archiveVersion = 1; + classes = { + }; + objectVersion = 46; + objects = { + +/* Begin PBXBuildFile section */ + 3274F6021D9A633A005282E4 /* OLMKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3274F5F81D9A633A005282E4 /* OLMKit.framework */; }; + 3274F6071D9A633A005282E4 /* OLMKitTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 3274F6061D9A633A005282E4 /* OLMKitTests.m */; }; + 3274F6131D9A698E005282E4 /* OLMKit.h in Headers */ = {isa = PBXBuildFile; fileRef = 3274F6121D9A698E005282E4 /* OLMKit.h */; }; + 32A151311DABDD4300400192 /* OLMKitGroupTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 32A151301DABDD4300400192 /* OLMKitGroupTests.m */; }; + 7DBAD311AEA85CF6DB80DCFA /* libPods-OLMKitTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 7123FABE917D0FB140E036B7 /* libPods-OLMKitTests.a */; }; + D667051A0BA47E17CCC4E5D7 /* libPods-OLMKit.a in Frameworks */ = {isa = PBXBuildFile; fileRef = F2F22FE8F173AF845B882805 /* libPods-OLMKit.a */; }; +/* End PBXBuildFile section */ + +/* Begin PBXContainerItemProxy section */ + 3274F6031D9A633A005282E4 /* PBXContainerItemProxy */ = { + isa = PBXContainerItemProxy; + containerPortal = 3274F5EF1D9A633A005282E4 /* Project object */; + proxyType = 1; + remoteGlobalIDString = 3274F5F71D9A633A005282E4; + remoteInfo = OLMKit; + }; +/* End PBXContainerItemProxy section */ + +/* Begin PBXFileReference section */ + 1B226B371526F2782C9D6372 /* Pods-OLMKit.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-OLMKit.release.xcconfig"; path = "Pods/Target Support Files/Pods-OLMKit/Pods-OLMKit.release.xcconfig"; sourceTree = "<group>"; }; + 3274F5F81D9A633A005282E4 /* OLMKit.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; 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+ 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..382be31 --- /dev/null +++ b/xcode/OLMKit/OLMAccount.h @@ -0,0 +1,41 @@ +// +// OLMAccount.h +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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..085b487 --- /dev/null +++ b/xcode/OLMKit/OLMAccount.m @@ -0,0 +1,253 @@ +// +// OLMAccount.m +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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); + if (accountResult == olm_error()) { + const char *error = olm_account_last_error(_account); + NSLog(@"error creating account: %s", error); + return nil; + } + return self; +} + +- (size_t) 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); + 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 nil; + } + size_t result = olm_remove_one_time_keys(self.account, session.session); + if (result == olm_error()) { + const char *error = olm_account_last_error(_account); + NSAssert(NO, @"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:@"org.matrix.olm" 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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..b8cf506 --- /dev/null +++ b/xcode/OLMKit/OLMAccount_Private.h @@ -0,0 +1,15 @@ +// +// OLMAccount_Private.h +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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..a507490 --- /dev/null +++ b/xcode/OLMKit/OLMInboundGroupSession.h @@ -0,0 +1,29 @@ +/* + Copyright 2016 OpenMarket 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; + +- (NSString*)sessionIdentifier; + +/** base64 ciphertext -> UTF-8 plaintext */ +- (NSString*)decryptMessage:(NSString*)message; + +@end diff --git a/xcode/OLMKit/OLMInboundGroupSession.m b/xcode/OLMKit/OLMInboundGroupSession.m new file mode 100644 index 0000000..d95d1ab --- /dev/null +++ b/xcode/OLMKit/OLMInboundGroupSession.m @@ -0,0 +1,198 @@ +/* + Copyright 2016 OpenMarket 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 { + 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 *error = olm_inbound_group_session_last_error(session); + NSAssert(NO, @"olm_init_inbound_group_session error: %s", error); + 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); + NSAssert(NO, @"olm_inbound_group_session_id error: %s", error); + return nil; + } + NSString *idString = [[NSString alloc] initWithData:idData encoding:NSUTF8StringEncoding]; + return idString; +} + +- (NSString *)decryptMessage:(NSString *)message +{ + 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 *error = olm_inbound_group_session_last_error(session); + NSAssert(NO, @"olm_group_decrypt_max_plaintext_length error: %s", error); + return nil; + } + // message buffer is destroyed by olm_group_decrypt_max_plaintext_length + mutMessage = messageData.mutableCopy; + NSMutableData *plaintextData = [NSMutableData dataWithLength:maxPlaintextLength]; + size_t plaintextLength = olm_group_decrypt(session, mutMessage.mutableBytes, mutMessage.length, plaintextData.mutableBytes, plaintextData.length); + if (plaintextLength == olm_error()) { + const char *error = olm_inbound_group_session_last_error(session); + NSAssert(NO, @"olm_group_decrypt error: %s", error); + return nil; + } + plaintextData.length = plaintextLength; + NSString *plaintext = [[NSString alloc] initWithData:plaintextData encoding:NSUTF8StringEncoding]; + 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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..3865e74 --- /dev/null +++ b/xcode/OLMKit/OLMKit.h @@ -0,0 +1,21 @@ +// +// OLMKit.h +// OLMKit +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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..0cd4ed5 --- /dev/null +++ b/xcode/OLMKit/OLMKit.m @@ -0,0 +1,28 @@ +/* + Copyright 2016 OpenMarket 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..97c748f --- /dev/null +++ b/xcode/OLMKit/OLMMessage.h @@ -0,0 +1,28 @@ +// +// OLMMessage.h +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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..d0cfb41 --- /dev/null +++ b/xcode/OLMKit/OLMMessage.m @@ -0,0 +1,24 @@ +// +// OLMMessage.m +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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..e7a8a91 --- /dev/null +++ b/xcode/OLMKit/OLMOutboundGroupSession.h @@ -0,0 +1,31 @@ +/* + Copyright 2016 OpenMarket 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; + +@end diff --git a/xcode/OLMKit/OLMOutboundGroupSession.m b/xcode/OLMKit/OLMOutboundGroupSession.m new file mode 100644 index 0000000..c86fa9f --- /dev/null +++ b/xcode/OLMKit/OLMOutboundGroupSession.m @@ -0,0 +1,205 @@ +/* + Copyright 2016 OpenMarket 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); + if (result == olm_error()) { + const char *error = olm_outbound_group_session_last_error(session); + NSAssert(NO, @"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); + NSAssert(NO, @"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); + NSAssert(NO, @"olm_outbound_group_session_key error: %s", error); + return nil; + } + NSString *sessionKey = [[NSString alloc] initWithData:sessionKeyData encoding:NSUTF8StringEncoding]; + return sessionKey; +} + +- (NSString *)encryptMessage:(NSString *)message { + 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 *error = olm_outbound_group_session_last_error(session); + NSAssert(NO, @"olm_group_encrypt error: %s", error); + 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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..b4b115a --- /dev/null +++ b/xcode/OLMKit/OLMSerializable.h @@ -0,0 +1,19 @@ +// +// OLMSerializable.h +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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..c209564 --- /dev/null +++ b/xcode/OLMKit/OLMSession.h @@ -0,0 +1,34 @@ +// +// OLMSession.h +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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; + +- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account oneTimeKeyMessage:(NSString*)oneTimeKeyMessage; + +- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account theirIdentityKey:(NSString*)theirIdentityKey oneTimeKeyMessage:(NSString*)oneTimeKeyMessage; + +- (NSString*) sessionIdentifier; + +- (BOOL) matchesInboundSession:(NSString*)oneTimeKeyMessage; + +- (BOOL) matchesInboundSessionFrom:(NSString*)theirIdentityKey oneTimeKeyMessage:(NSString *)oneTimeKeyMessage; + +/** UTF-8 plaintext -> base64 ciphertext */ +- (OLMMessage*) encryptMessage:(NSString*)message; + +/** base64 ciphertext -> UTF-8 plaintext */ +- (NSString*) decryptMessage:(OLMMessage*)message; + +@end diff --git a/xcode/OLMKit/OLMSession.m b/xcode/OLMKit/OLMSession.m new file mode 100644 index 0000000..41aef7e --- /dev/null +++ b/xcode/OLMKit/OLMSession.m @@ -0,0 +1,261 @@ +// +// OLMSession.m +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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 { + 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); + if (result == olm_error()) { + const char *error = olm_session_last_error(_session); + NSAssert(NO, @"olm_create_outbound_session error: %s", error); + return nil; + } + return self; +} + +- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account oneTimeKeyMessage:(NSString*)oneTimeKeyMessage { + 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 *error = olm_session_last_error(_session); + NSAssert(NO, @"olm_create_inbound_session error: %s", error); + return nil; + } + return self; +} + +- (instancetype) initInboundSessionWithAccount:(OLMAccount*)account theirIdentityKey:(NSString*)theirIdentityKey oneTimeKeyMessage:(NSString*)oneTimeKeyMessage { + 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 *error = olm_session_last_error(_session); + NSAssert(NO, @"olm_create_inbound_session_from error: %s", error); + 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); + NSAssert(NO, @"olm_session_id error: %s", error); + return nil; + } + NSString *idString = [[NSString alloc] initWithData:idData encoding:NSUTF8StringEncoding]; + return idString; +} + +- (OLMMessage*) encryptMessage:(NSString*)message { + 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); + if (result == olm_error()) { + const char *error = olm_session_last_error(_session); + NSAssert(NO, @"olm_encrypt error: %s", error); + return nil; + } + NSString *ciphertextString = [[NSString alloc] initWithData:ciphertext encoding:NSUTF8StringEncoding]; + OLMMessage *encryptedMessage = [[OLMMessage alloc] initWithCiphertext:ciphertextString type:messageType]; + return encryptedMessage; +} + +- (NSString*) decryptMessage:(OLMMessage*)message { + 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 *error = olm_session_last_error(_session); + NSAssert(NO, @"olm_decrypt_max_plaintext_length error: %s", error); + 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 *error = olm_session_last_error(_session); + NSAssert(NO, @"olm_decrypt error: %s", error); + return nil; + } + plaintextData.length = plaintextLength; + NSString *plaintext = [[NSString alloc] initWithData:plaintextData encoding:NSUTF8StringEncoding]; + 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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:@"org.matrix.olm" 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..bd7d25d --- /dev/null +++ b/xcode/OLMKit/OLMSession_Private.h @@ -0,0 +1,16 @@ +// +// OLMSession_Private.h +// olm +// +// Created by Chris Ballinger on 4/13/16. +// +// + +#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..1952b8e --- /dev/null +++ b/xcode/OLMKit/OLMUtility.h @@ -0,0 +1,37 @@ +// +// OLMUtility.h +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#import <Foundation/Foundation.h> + +@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..292fc21 --- /dev/null +++ b/xcode/OLMKit/OLMUtility.m @@ -0,0 +1,109 @@ +// +// OLMUtility.m +// olm +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#import "OLMUtility.h" + +#include "olm/olm.h" + +@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); + NSAssert(NO, @"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, + 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..9f5ad10 --- /dev/null +++ b/xcode/OLMKitTests/OLMKitGroupTests.m @@ -0,0 +1,85 @@ +/* + Copyright 2016 OpenMarket 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 { + + 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]; + + XCTAssertEqual(aliceSession.messageIndex, 1); + XCTAssertGreaterThanOrEqual(aliceToBobMsg.length, 0); + + OLMInboundGroupSession *bobSession = [[OLMInboundGroupSession alloc] initInboundGroupSessionWithSessionKey:sessionKey]; + XCTAssertEqualObjects(aliceSession.sessionIdentifier, bobSession.sessionIdentifier); + + NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg]; + XCTAssertEqualObjects(message, plaintext); +} + +- (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]; + + 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..7edc062 --- /dev/null +++ b/xcode/OLMKitTests/OLMKitTests.m @@ -0,0 +1,181 @@ +// +// OLMKitTests.m +// OLMKitTests +// +// Created by Chris Ballinger on 4/8/16. +// +// + +#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 { + 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]; + NSString *message = @"Hello!"; + OLMMessage *aliceToBobMsg = [aliceSession encryptMessage:message]; + + OLMSession *bobSession = [[OLMSession alloc] initInboundSessionWithAccount:bob oneTimeKeyMessage:aliceToBobMsg.ciphertext]; + NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg]; + XCTAssertEqualObjects(message, plaintext); + 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]; + NSString *message = @"Hello I'm Alice!"; + OLMMessage *aliceToBobMsg = [aliceSession encryptMessage:message]; + + OLMSession *bobSession = [[OLMSession alloc] initInboundSessionWithAccount:bob oneTimeKeyMessage:aliceToBobMsg.ciphertext]; + NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg]; + 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]; + OLMMessage *eMsg2 = [bobSession encryptMessage:msg2]; + OLMMessage *eMsg3 = [bobSession encryptMessage:msg3]; + + NSString *dMsg1 = [aliceSession decryptMessage:eMsg1]; + NSString *dMsg2 = [aliceSession decryptMessage:eMsg2]; + NSString *dMsg3 = [aliceSession decryptMessage:eMsg3]; + 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 { + 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]; + NSString *message = @"Hello I'm Alice!"; + OLMMessage *aliceToBobMsg = [aliceSession encryptMessage:message]; + + OLMSession *bobSession = [[OLMSession alloc] initInboundSessionWithAccount:bob oneTimeKeyMessage:aliceToBobMsg.ciphertext]; + NSString *plaintext = [bobSession decryptMessage:aliceToBobMsg]; + 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]; + OLMMessage *eMsg2 = [bobSession encryptMessage:msg2]; + OLMMessage *eMsg3 = [bobSession encryptMessage:msg3]; + + NSData *aliceData = [NSKeyedArchiver archivedDataWithRootObject:aliceSession]; + OLMSession *alice2 = [NSKeyedUnarchiver unarchiveObjectWithData:aliceData]; + + NSString *dMsg1 = [alice2 decryptMessage:eMsg1]; + NSString *dMsg2 = [alice2 decryptMessage:eMsg2]; + NSString *dMsg3 = [alice2 decryptMessage:eMsg3]; + 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..b091109 --- /dev/null +++ b/xcode/Podfile.lock @@ -0,0 +1,20 @@ +PODS: + - OLMKit (1.3.0): + - OLMKit/olmc (= 1.3.0) + - OLMKit/olmcpp (= 1.3.0) + - OLMKit/olmc (1.3.0) + - OLMKit/olmcpp (1.3.0) + +DEPENDENCIES: + - OLMKit (from `../OLMKit.podspec`) + +EXTERNAL SOURCES: + OLMKit: + :path: ../OLMKit.podspec + +SPEC CHECKSUMS: + OLMKit: 49b73677a77988cc25e51d023f39a8a3e451cb23 + +PODFILE CHECKSUM: 4e261dae61d833ec5585ced2473023b98909fd35 + +COCOAPODS: 1.0.1 diff --git a/xcode/README.rst b/xcode/README.rst new file mode 100644 index 0000000..db78e57 --- /dev/null +++ b/xcode/README.rst @@ -0,0 +1,22 @@ +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 into OLMKit.xcworkspace. + |