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libcli:auth: Use GnuTLS MD5 HMAC in SMBOWFencrypt_ntv2()

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Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Andreas Schneider 2019-05-15 08:05:38 +02:00 committed by Andrew Bartlett
parent a2f88720d2
commit e1c04866a8
1 changed files with 21 additions and 5 deletions
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26
libcli/auth/smbencrypt.c
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@ -339,12 +339,28 @@ void SMBOWFencrypt_ntv2(const uint8_t kr[16],
const DATA_BLOB *smbcli_chal,
uint8_t resp_buf[16])
{
HMACMD5Context ctx;
gnutls_hmac_hd_t hmac_hnd = NULL;
int rc;
hmac_md5_init_limK_to_64(kr, 16, &ctx);
hmac_md5_update(srv_chal->data, srv_chal->length, &ctx);
hmac_md5_update(smbcli_chal->data, smbcli_chal->length, &ctx);
hmac_md5_final(resp_buf, &ctx);
rc = gnutls_hmac_init(&hmac_hnd,
GNUTLS_MAC_MD5,
kr,
16);
if (rc < 0) {
return;
}
rc = gnutls_hmac(hmac_hnd, srv_chal->data, srv_chal->length);
if (rc < 0) {
return;
}
rc = gnutls_hmac(hmac_hnd, smbcli_chal->data, smbcli_chal->length);
if (rc < 0) {
gnutls_hmac_deinit(hmac_hnd, NULL);
return;
}
gnutls_hmac_deinit(hmac_hnd, resp_buf);
#ifdef DEBUG_PASSWORD
DEBUG(100, ("SMBOWFencrypt_ntv2: srv_chal, smbcli_chal, resp_buf\n"));