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-rw-r--r--include/olm/account.hh12
-rw-r--r--include/olm/crypto.h114
-rw-r--r--include/olm/crypto.hh130
-rw-r--r--include/olm/pickle.hh26
-rw-r--r--include/olm/ratchet.hh14
-rw-r--r--include/olm/session.hh14
-rw-r--r--include/olm/utility.hh6
7 files changed, 148 insertions, 168 deletions
diff --git a/include/olm/account.hh b/include/olm/account.hh
index 6ea0d19..7e58ca3 100644
--- a/include/olm/account.hh
+++ b/include/olm/account.hh
@@ -16,7 +16,7 @@
#define OLM_ACCOUNT_HH_
#include "olm/list.hh"
-#include "olm/crypto.hh"
+#include "olm/crypto.h"
#include "olm/error.h"
#include <cstdint>
@@ -25,14 +25,14 @@ namespace olm {
struct IdentityKeys {
- Ed25519KeyPair ed25519_key;
- Curve25519KeyPair curve25519_key;
+ _olm_ed25519_key_pair ed25519_key;
+ _olm_curve25519_key_pair curve25519_key;
};
struct OneTimeKey {
std::uint32_t id;
bool published;
- Curve25519KeyPair key;
+ _olm_curve25519_key_pair key;
};
@@ -128,12 +128,12 @@ struct Account {
/** Lookup a one time key with the given public key */
OneTimeKey const * lookup_key(
- Curve25519PublicKey const & public_key
+ _olm_curve25519_public_key const & public_key
);
/** Remove a one time key with the given public key */
std::size_t remove_key(
- Curve25519PublicKey const & public_key
+ _olm_curve25519_public_key const & public_key
);
};
diff --git a/include/olm/crypto.h b/include/olm/crypto.h
index 325080e..dbf78ed 100644
--- a/include/olm/crypto.h
+++ b/include/olm/crypto.h
@@ -57,9 +57,70 @@ extern "C" {
/** length of an aes256 initialisation vector */
#define AES256_IV_LENGTH 16
+struct _olm_aes256_key {
+ uint8_t key[AES256_KEY_LENGTH];
+};
-/** Computes SHA-256 of the input. The output buffer must be a least 32
- * bytes long. */
+struct _olm_aes256_iv {
+ uint8_t iv[AES256_IV_LENGTH];
+};
+
+
+struct _olm_curve25519_public_key {
+ uint8_t public_key[CURVE25519_KEY_LENGTH];
+};
+
+struct _olm_curve25519_private_key {
+ uint8_t private_key[CURVE25519_KEY_LENGTH];
+};
+
+struct _olm_curve25519_key_pair {
+ struct _olm_curve25519_public_key public_key;
+ struct _olm_curve25519_private_key private_key;
+};
+
+struct _olm_ed25519_public_key {
+ uint8_t public_key[ED25519_PUBLIC_KEY_LENGTH];
+};
+
+struct _olm_ed25519_private_key {
+ uint8_t private_key[ED25519_PRIVATE_KEY_LENGTH];
+};
+
+struct _olm_ed25519_key_pair {
+ struct _olm_ed25519_public_key public_key;
+ struct _olm_ed25519_private_key private_key;
+};
+
+
+/** The length of output the aes_encrypt_cbc function will write */
+size_t _olm_crypto_aes_encrypt_cbc_length(
+ size_t input_length
+);
+
+/** Encrypts the input using AES256 in CBC mode with PKCS#7 padding.
+ * The output buffer must be big enough to hold the output including padding */
+void _olm_crypto_aes_encrypt_cbc(
+ const struct _olm_aes256_key *key,
+ const struct _olm_aes256_iv *iv,
+ const uint8_t *input, size_t input_length,
+ uint8_t *output
+);
+
+/** Decrypts the input using AES256 in CBC mode. The output buffer must be at
+ * least the same size as the input buffer. Returns the length of the plaintext
+ * without padding on success or std::size_t(-1) if the padding is invalid.
+ */
+size_t _olm_crypto_aes_decrypt_cbc(
+ const struct _olm_aes256_key *key,
+ const struct _olm_aes256_iv *iv,
+ uint8_t const * input, size_t input_length,
+ uint8_t * output
+);
+
+
+/** Computes SHA-256 of the input. The output buffer must be a least
+ * SHA256_OUTPUT_LENGTH (32) bytes long. */
void _olm_crypto_sha256(
uint8_t const * input, size_t input_length,
uint8_t * output
@@ -68,7 +129,7 @@ void _olm_crypto_sha256(
/** HMAC: Keyed-Hashing for Message Authentication
* http://tools.ietf.org/html/rfc2104
* Computes HMAC-SHA-256 of the input for the key. The output buffer must
- * be at least 32 bytes long. */
+ * be at least SHA256_OUTPUT_LENGTH (32) bytes long. */
void _olm_crypto_hmac_sha256(
uint8_t const * key, size_t key_length,
uint8_t const * input, size_t input_length,
@@ -87,6 +148,53 @@ void _olm_crypto_hkdf_sha256(
);
+/** Generate a curve25519 key pair
+ * random_32_bytes should be CURVE25519_RANDOM_LENGTH (32) bytes long.
+ */
+void _olm_crypto_curve25519_generate_key(
+ uint8_t const * random_32_bytes,
+ struct _olm_curve25519_key_pair *output
+);
+
+
+/** Create a shared secret using our private key and their public key.
+ * The output buffer must be at least CURVE25519_SHARED_SECRET_LENGTH (32) bytes long.
+ */
+void _olm_crypto_curve25519_shared_secret(
+ const struct _olm_curve25519_key_pair *our_key,
+ const struct _olm_curve25519_public_key *their_key,
+ uint8_t * output
+);
+
+/** Generate an ed25519 key pair
+ * random_32_bytes should be ED25519_RANDOM_LENGTH (32) bytes long.
+ */
+void _olm_crypto_ed25519_generate_key(
+ uint8_t const * random_bytes,
+ struct _olm_ed25519_key_pair *output
+);
+
+/** Signs the message using our private key.
+ *
+ * The output buffer must be at least ED25519_SIGNATURE_LENGTH (64) bytes
+ * long. */
+void _olm_crypto_ed25519_sign(
+ const struct _olm_ed25519_key_pair *our_key,
+ const uint8_t * message, size_t message_length,
+ uint8_t * output
+);
+
+/** Verify an ed25519 signature
+ * The signature input buffer must be ED25519_SIGNATURE_LENGTH (64) bytes long.
+ * Returns non-zero if the signature is valid. */
+int _olm_crypto_ed25519_verify(
+ const struct _olm_ed25519_public_key *their_key,
+ const uint8_t * message, size_t message_length,
+ const uint8_t * signature
+);
+
+
+
#ifdef __cplusplus
} // extern "C"
#endif
diff --git a/include/olm/crypto.hh b/include/olm/crypto.hh
deleted file mode 100644
index 13fd7e9..0000000
--- a/include/olm/crypto.hh
+++ /dev/null
@@ -1,130 +0,0 @@
-/* Copyright 2015 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.
- */
-#ifndef OLM_CRYPTO_HH_
-#define OLM_CRYPTO_HH_
-
-#include <cstdint>
-#include <cstddef>
-
-// eventually all of this needs to move into crypto.h, and everything should
-// use that. For now, include crypto.h here.
-
-#include "olm/crypto.h"
-
-namespace olm {
-
-struct Curve25519PublicKey {
- std::uint8_t public_key[CURVE25519_KEY_LENGTH];
-};
-
-
-struct Curve25519KeyPair : public Curve25519PublicKey {
- std::uint8_t private_key[CURVE25519_KEY_LENGTH];
-};
-
-
-struct Ed25519PublicKey {
- std::uint8_t public_key[ED25519_PUBLIC_KEY_LENGTH];
-};
-
-
-struct Ed25519KeyPair : public Ed25519PublicKey {
- std::uint8_t private_key[ED25519_PRIVATE_KEY_LENGTH];
-};
-
-
-/** Generate a curve25519 key pair from 32 random bytes. */
-void curve25519_generate_key(
- std::uint8_t const * random_32_bytes,
- Curve25519KeyPair & key_pair
-);
-
-
-/** Create a shared secret using our private key and their public key.
- * The output buffer must be at least 32 bytes long. */
-void curve25519_shared_secret(
- Curve25519KeyPair const & our_key,
- Curve25519PublicKey const & their_key,
- std::uint8_t * output
-);
-
-
-/** Generate a curve25519 key pair from 32 random bytes. */
-void ed25519_generate_key(
- std::uint8_t const * random_32_bytes,
- Ed25519KeyPair & key_pair
-);
-
-
-/** Signs the message using our private key.
- * The output buffer must be at least 64 bytes long. */
-void ed25519_sign(
- Ed25519KeyPair const & our_key,
- std::uint8_t const * message, std::size_t message_length,
- std::uint8_t * output
-);
-
-
-/** Verify their message using their public key.
- * The signature input buffer must be 64 bytes long.
- * Returns true if the signature is valid. */
-bool ed25519_verify(
- Ed25519PublicKey const & their_key,
- std::uint8_t const * message, std::size_t message_length,
- std::uint8_t const * signature
-);
-
-
-struct Aes256Key {
- std::uint8_t key[AES256_KEY_LENGTH];
-};
-
-
-struct Aes256Iv {
- std::uint8_t iv[AES256_IV_LENGTH];
-};
-
-
-/** The length of output the aes_encrypt_cbc function will write */
-std::size_t aes_encrypt_cbc_length(
- std::size_t input_length
-);
-
-
-/** Encrypts the input using AES256 in CBC mode with PKCS#7 padding.
- * The output buffer must be big enough to hold the output including padding */
-void aes_encrypt_cbc(
- Aes256Key const & key,
- Aes256Iv const & iv,
- std::uint8_t const * input, std::size_t input_length,
- std::uint8_t * output
-);
-
-
-/** Decrypts the input using AES256 in CBC mode. The output buffer must be at
- * least the same size as the input buffer. Returns the length of the plaintext
- * without padding on success or std::size_t(-1) if the padding is invalid.
- */
-std::size_t aes_decrypt_cbc(
- Aes256Key const & key,
- Aes256Iv const & iv,
- std::uint8_t const * input, std::size_t input_length,
- std::uint8_t * output
-);
-
-
-} // namespace olm
-
-#endif /* OLM_CRYPTO_HH_ */
diff --git a/include/olm/pickle.hh b/include/olm/pickle.hh
index 13e6b01..a09b8a1 100644
--- a/include/olm/pickle.hh
+++ b/include/olm/pickle.hh
@@ -16,7 +16,7 @@
#define OLM_PICKLE_HH_
#include "olm/list.hh"
-#include "olm/crypto.hh"
+#include "olm/crypto.h"
#include <cstring>
#include <cstdint>
@@ -109,70 +109,70 @@ std::uint8_t const * unpickle_bytes(
std::size_t pickle_length(
- const Curve25519PublicKey & value
+ const _olm_curve25519_public_key & value
);
std::uint8_t * pickle(
std::uint8_t * pos,
- const Curve25519PublicKey & value
+ const _olm_curve25519_public_key & value
);
std::uint8_t const * unpickle(
std::uint8_t const * pos, std::uint8_t const * end,
- Curve25519PublicKey & value
+ _olm_curve25519_public_key & value
);
std::size_t pickle_length(
- const Curve25519KeyPair & value
+ const _olm_curve25519_key_pair & value
);
std::uint8_t * pickle(
std::uint8_t * pos,
- const Curve25519KeyPair & value
+ const _olm_curve25519_key_pair & value
);
std::uint8_t const * unpickle(
std::uint8_t const * pos, std::uint8_t const * end,
- Curve25519KeyPair & value
+ _olm_curve25519_key_pair & value
);
std::size_t pickle_length(
- const Ed25519PublicKey & value
+ const _olm_ed25519_public_key & value
);
std::uint8_t * pickle(
std::uint8_t * pos,
- const Ed25519PublicKey & value
+ const _olm_ed25519_public_key & value
);
std::uint8_t const * unpickle(
std::uint8_t const * pos, std::uint8_t const * end,
- Ed25519PublicKey & value
+ _olm_ed25519_public_key & value
);
std::size_t pickle_length(
- const Ed25519KeyPair & value
+ const _olm_ed25519_key_pair & value
);
std::uint8_t * pickle(
std::uint8_t * pos,
- const Ed25519KeyPair & value
+ const _olm_ed25519_key_pair & value
);
std::uint8_t const * unpickle(
std::uint8_t const * pos, std::uint8_t const * end,
- Ed25519KeyPair & value
+ _olm_ed25519_key_pair & value
);
} // namespace olm
diff --git a/include/olm/ratchet.hh b/include/olm/ratchet.hh
index e91d634..2e87e35 100644
--- a/include/olm/ratchet.hh
+++ b/include/olm/ratchet.hh
@@ -13,7 +13,9 @@
* limitations under the License.
*/
-#include "olm/crypto.hh"
+#include <cstdint>
+
+#include "olm/crypto.h"
#include "olm/list.hh"
#include "olm/error.h"
@@ -41,19 +43,19 @@ struct MessageKey {
struct SenderChain {
- Curve25519KeyPair ratchet_key;
+ _olm_curve25519_key_pair ratchet_key;
ChainKey chain_key;
};
struct ReceiverChain {
- Curve25519PublicKey ratchet_key;
+ _olm_curve25519_public_key ratchet_key;
ChainKey chain_key;
};
struct SkippedMessageKey {
- Curve25519PublicKey ratchet_key;
+ _olm_curve25519_public_key ratchet_key;
MessageKey message_key;
};
@@ -108,14 +110,14 @@ struct Ratchet {
* remote's first ratchet key */
void initialise_as_bob(
std::uint8_t const * shared_secret, std::size_t shared_secret_length,
- Curve25519PublicKey const & their_ratchet_key
+ _olm_curve25519_public_key const & their_ratchet_key
);
/** Initialise the session using a shared secret and the public/private key
* pair for the first ratchet key */
void initialise_as_alice(
std::uint8_t const * shared_secret, std::size_t shared_secret_length,
- Curve25519KeyPair const & our_ratchet_key
+ _olm_curve25519_key_pair const & our_ratchet_key
);
/** The number of bytes of output the encrypt method will write for
diff --git a/include/olm/session.hh b/include/olm/session.hh
index 5b91cb1..9d44816 100644
--- a/include/olm/session.hh
+++ b/include/olm/session.hh
@@ -35,9 +35,9 @@ struct Session {
bool received_message;
- Curve25519PublicKey alice_identity_key;
- Curve25519PublicKey alice_base_key;
- Curve25519PublicKey bob_one_time_key;
+ _olm_curve25519_public_key alice_identity_key;
+ _olm_curve25519_public_key alice_base_key;
+ _olm_curve25519_public_key bob_one_time_key;
/** The number of random bytes that are needed to create a new outbound
* session. This will be 64 bytes since two ephemeral keys are needed. */
@@ -48,8 +48,8 @@ struct Session {
* NOT_ENOUGH_RANDOM if the number of random bytes was too small. */
std::size_t new_outbound_session(
Account const & local_account,
- Curve25519PublicKey const & identity_key,
- Curve25519PublicKey const & one_time_key,
+ _olm_curve25519_public_key const & identity_key,
+ _olm_curve25519_public_key const & one_time_key,
std::uint8_t const * random, std::size_t random_length
);
@@ -59,7 +59,7 @@ struct Session {
* the message headers could not be decoded. */
std::size_t new_inbound_session(
Account & local_account,
- Curve25519PublicKey const * their_identity_key,
+ _olm_curve25519_public_key const * their_identity_key,
std::uint8_t const * pre_key_message, std::size_t message_length
);
@@ -82,7 +82,7 @@ struct Session {
* session does not match or the pre-key message could not be decoded.
*/
bool matches_inbound_session(
- Curve25519PublicKey const * their_identity_key,
+ _olm_curve25519_public_key const * their_identity_key,
std::uint8_t const * pre_key_message, std::size_t message_length
);
diff --git a/include/olm/utility.hh b/include/olm/utility.hh
index 1339fe5..d650abc 100644
--- a/include/olm/utility.hh
+++ b/include/olm/utility.hh
@@ -21,9 +21,9 @@
#include <cstddef>
#include <cstdint>
-namespace olm {
+struct _olm_ed25519_public_key;
-struct Ed25519PublicKey;
+namespace olm {
struct Utility {
@@ -48,7 +48,7 @@ struct Utility {
* last_error will be set with an error code. If the signature was too short
* or was not a valid signature then last_error will be BAD_MESSAGE_MAC. */
std::size_t ed25519_verify(
- Ed25519PublicKey const & key,
+ _olm_ed25519_public_key const & key,
std::uint8_t const * message, std::size_t message_length,
std::uint8_t const * signature, std::size_t signature_length
);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 03:54:28 +0000