diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ntlm.h | 17 | ||||
| -rw-r--r-- | src/ntlm_crypto.c | 25 |
2 files changed, 42 insertions, 0 deletions
@@ -413,6 +413,23 @@ int ntlm_unseal(struct ntlm_rc4_handle *handle, uint32_t flags, struct ntlm_buffer *message, struct ntlm_buffer *output, struct ntlm_buffer *signature); +/** + * @brief Creates a NTLM MIC + * + * @param exported_session_key The Exported Session Key + * @param negotiate_message The NTLM Negotiate Message (or empty) + * @param challenge_message The NTLM Challenge Message + * @param authenticate_message The NTLM Authenticate Message + * @param mic Preallocated byffer of 16 bytes + * + * @return 0 on success, or an error + */ +int ntlm_mic(struct ntlm_key *exported_session_key, + struct ntlm_buffer *negotiate_message, + struct ntlm_buffer *challenge_message, + struct ntlm_buffer *authenticate_message, + struct ntlm_buffer *mic); + /* ############## ENCODING / DECODING ############## */ /** diff --git a/src/ntlm_crypto.c b/src/ntlm_crypto.c index 46b7d97..fbfdc41 100644 --- a/src/ntlm_crypto.c +++ b/src/ntlm_crypto.c @@ -805,3 +805,28 @@ int ntlm_unseal(struct ntlm_rc4_handle *handle, uint32_t flags, (flags & NTLMSSP_NEGOTIATE_KEY_EXCH), output, signature); } + +int ntlm_mic(struct ntlm_key *exported_session_key, + struct ntlm_buffer *negotiate_message, + struct ntlm_buffer *challenge_message, + struct ntlm_buffer *authenticate_message, + struct ntlm_buffer *mic) +{ + struct ntlm_buffer key = { exported_session_key->data, + exported_session_key->length }; + struct ntlm_buffer *data[3] = { negotiate_message, + challenge_message, + authenticate_message }; + struct ntlm_iov iov; + + if (negotiate_message->length == 0) { + /* connectionless case */ + iov.data = &data[1]; + iov.num = 2; + } else { + iov.data = data; + iov.num = 3; + } + + return HMAC_MD5_IOV(&key, &iov, mic); +} |