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Follow xep by putting gcm tag on encrypted key

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This commit is contained in:
Paul Fariello
2019-03-06 21:23:06 +02:20
parent 605e06411c
commit b0c52f84ab
3 changed files with 23 additions and 13 deletions
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4
src/omemo/crypto.c
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@@ -261,7 +261,7 @@ out:
}
int
aes128gcm_encrypt(unsigned char *ciphertext, size_t *ciphertext_len, const unsigned char *const plaintext, size_t plaintext_len, const unsigned char *const iv, const unsigned char *const key)
aes128gcm_encrypt(unsigned char *ciphertext, size_t *ciphertext_len, unsigned char *tag, size_t *tag_len, const unsigned char *const plaintext, size_t plaintext_len, const unsigned char *const iv, const unsigned char *const key)
{
gcry_error_t res;
gcry_cipher_hd_t hd;
@@ -284,7 +284,7 @@ aes128gcm_encrypt(unsigned char *ciphertext, size_t *ciphertext_len, const unsig
goto out;
}
res = gcry_cipher_gettag(hd, ciphertext + plaintext_len, AES128_GCM_TAG_LENGTH);
res = gcry_cipher_gettag(hd, tag, *tag_len);
if (res != GPG_ERR_NO_ERROR) {
goto out;
}