diff options
| -rw-r--r-- | libcli/smb/smb2_signing.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/libcli/smb/smb2_signing.c b/libcli/smb/smb2_signing.c index ac0f6f4d29f..166ab9d83ff 100644 --- a/libcli/smb/smb2_signing.c +++ b/libcli/smb/smb2_signing.c @@ -588,13 +588,12 @@ NTSTATUS smb2_signing_decrypt_pdu(struct smb2_signing_key *decryption_key, { uint8_t *tf; uint16_t flags; - int i; size_t a_total; ssize_t m_total; uint32_t msg_size = 0; uint32_t iv_size = 0; uint32_t key_size = 0; - uint32_t tag_size = 0; + size_t tag_size = 0; uint8_t _key[16] = {0}; gnutls_cipher_algorithm_t algo = 0; gnutls_datum_t key; @@ -680,12 +679,37 @@ NTSTATUS smb2_signing_decrypt_pdu(struct smb2_signing_key *decryption_key, } } +#ifdef HAVE_GNUTLS_AEAD_CIPHER_ENCRYPTV2 + { + giovec_t auth_iov[1]; + + auth_iov[0] = (giovec_t) { + .iov_base = tf + SMB2_TF_NONCE, + .iov_len = a_total, + }; + + rc = gnutls_aead_cipher_decryptv2(decryption_key->cipher_hnd, + iv.data, + iv.size, + auth_iov, + 1, + &vector[1], + count - 1, + tf + SMB2_TF_SIGNATURE, + tag_size); + if (rc < 0) { + status = gnutls_error_to_ntstatus(rc, NT_STATUS_INTERNAL_ERROR); + goto out; + } + } +#else /* HAVE_GNUTLS_AEAD_CIPHER_ENCRYPTV2 */ { size_t ctext_size = m_total + tag_size; uint8_t *ctext = NULL; size_t ptext_size = m_total; uint8_t *ptext = NULL; size_t len = 0; + int i; /* GnuTLS doesn't have a iovec API for decryption yet */ @@ -751,6 +775,7 @@ NTSTATUS smb2_signing_decrypt_pdu(struct smb2_signing_key *decryption_key, TALLOC_FREE(ptext); TALLOC_FREE(ctext); } +#endif /* HAVE_GNUTLS_AEAD_CIPHER_ENCRYPTV2 */ DBG_INFO("Decrypted SMB2 message\n"); |