diff options
Diffstat (limited to 'protocols/Tox/libtox/src/toxencryptsave/toxencryptsave.c')
| -rw-r--r-- | protocols/Tox/libtox/src/toxencryptsave/toxencryptsave.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/protocols/Tox/libtox/src/toxencryptsave/toxencryptsave.c b/protocols/Tox/libtox/src/toxencryptsave/toxencryptsave.c index c43e357528..b785c26732 100644 --- a/protocols/Tox/libtox/src/toxencryptsave/toxencryptsave.c +++ b/protocols/Tox/libtox/src/toxencryptsave/toxencryptsave.c @@ -67,7 +67,8 @@ void tox_pass_key_free(Tox_Pass_Key *key) * produce the same key as was previously used. Any data encrypted with this * module can be used as input. * - * The cipher text must be at least TOX_PASS_ENCRYPTION_EXTRA_LENGTH bytes in length. + * The cipher text must be at least TOX_PASS_ENCRYPTION_EXTRA_LENGTH bytes in + * length. * The salt must be TOX_PASS_SALT_LENGTH bytes in length. * If the passed byte arrays are smaller than required, the behaviour is * undefined. @@ -182,10 +183,11 @@ Tox_Pass_Key *tox_pass_key_derive_with_salt( } /** - * Encrypt a plain text with a key produced by tox_pass_key_derive or tox_pass_key_derive_with_salt. + * Encrypt a plain text with a key produced by tox_pass_key_derive or + * tox_pass_key_derive_with_salt. * - * The output array must be at least `plaintext_len + TOX_PASS_ENCRYPTION_EXTRA_LENGTH` - * bytes long. + * The output array must be at least + * `plaintext_len + TOX_PASS_ENCRYPTION_EXTRA_LENGTH` bytes long. * * @param plaintext A byte array of length `plaintext_len`. * @param plaintext_len The length of the plain text array. Bigger than 0. @@ -229,8 +231,8 @@ bool tox_pass_key_encrypt(const Tox_Pass_Key *key, const uint8_t plaintext[], si ciphertext += crypto_box_NONCEBYTES; /* now encrypt */ - if (encrypt_data_symmetric(key->key, nonce, plaintext, plaintext_len, ciphertext) - != plaintext_len + crypto_box_MACBYTES) { + const int32_t encrypted_len = encrypt_data_symmetric(key->key, nonce, plaintext, plaintext_len, ciphertext); + if (encrypted_len < 0 || (size_t)encrypted_len != plaintext_len + crypto_box_MACBYTES) { SET_ERROR_PARAMETER(error, TOX_ERR_ENCRYPTION_FAILED); return false; } @@ -242,9 +244,9 @@ bool tox_pass_key_encrypt(const Tox_Pass_Key *key, const uint8_t plaintext[], si /** * Encrypts the given data with the given passphrase. * - * The output array must be at least `plaintext_len + TOX_PASS_ENCRYPTION_EXTRA_LENGTH` - * bytes long. This delegates to tox_pass_key_derive and - * tox_pass_key_encrypt. + * The output array must be at least + * `plaintext_len + TOX_PASS_ENCRYPTION_EXTRA_LENGTH` bytes long. This delegates + * to tox_pass_key_derive and tox_pass_key_encrypt. * * @param plaintext A byte array of length `plaintext_len`. * @param plaintext_len The length of the plain text array. Bigger than 0. @@ -280,7 +282,8 @@ bool tox_pass_encrypt(const uint8_t plaintext[], size_t plaintext_len, const uin * tox_pass_key_derive or tox_pass_key_derive_with_salt. * * @param ciphertext A byte array of length `ciphertext_len`. - * @param ciphertext_len The length of the cipher text array. At least TOX_PASS_ENCRYPTION_EXTRA_LENGTH. + * @param ciphertext_len The length of the cipher text array. At least + * TOX_PASS_ENCRYPTION_EXTRA_LENGTH. * @param plaintext The plain text array to write the decrypted data to. * * @return true on success. @@ -313,8 +316,8 @@ bool tox_pass_key_decrypt(const Tox_Pass_Key *key, const uint8_t ciphertext[], s ciphertext += crypto_box_NONCEBYTES; /* decrypt the ciphertext */ - if (decrypt_data_symmetric(key->key, nonce, ciphertext, decrypt_length + crypto_box_MACBYTES, plaintext) - != decrypt_length) { + const int32_t decrypted_len = decrypt_data_symmetric(key->key, nonce, ciphertext, decrypt_length + crypto_box_MACBYTES, plaintext); + if (decrypted_len < 0 || (size_t)decrypted_len != decrypt_length) { SET_ERROR_PARAMETER(error, TOX_ERR_DECRYPTION_FAILED); return false; } @@ -326,11 +329,13 @@ bool tox_pass_key_decrypt(const Tox_Pass_Key *key, const uint8_t ciphertext[], s /** * Decrypts the given data with the given passphrase. * - * The output array must be at least `ciphertext_len - TOX_PASS_ENCRYPTION_EXTRA_LENGTH` - * bytes long. This delegates to tox_pass_key_decrypt. + * The output array must be at least + * `ciphertext_len - TOX_PASS_ENCRYPTION_EXTRA_LENGTH` bytes long. This + * delegates to tox_pass_key_decrypt. * * @param ciphertext A byte array of length `ciphertext_len`. - * @param ciphertext_len The length of the cipher text array. At least TOX_PASS_ENCRYPTION_EXTRA_LENGTH. + * @param ciphertext_len The length of the cipher text array. At least + * TOX_PASS_ENCRYPTION_EXTRA_LENGTH. * @param passphrase The user-provided password. Can be empty. * @param passphrase_len The length of the password. * @param plaintext The plain text array to write the decrypted data to. |