SMB2 signing now works. The spec was wrong (and will be fixed in the
[kai/samba.git] / source4 / libcli / smb2 / signing.c
index 01f7576134b67b64e16af31d2fe8fcf6b2f7b8ec..16c0ff99c1bab4a243d5fa541ce07038e16c557e 100644 (file)
@@ -23,7 +23,7 @@
 #include "libcli/raw/libcliraw.h"
 #include "libcli/smb2/smb2.h"
 #include "libcli/smb2/smb2_calls.h"
-#include "heimdal/lib/hcrypto/sha.h"
+#include "lib/crypto/crypto.h"
 
 /*
   NOTE: this code does not yet interoperate with the windows SMB2
@@ -54,7 +54,7 @@ NTSTATUS smb2_sign_message(struct smb2_request *req)
 {
        struct smb2_request_buffer *buf = &req->out;
        uint64_t session_id;
-       SHA256_CTX m;
+       struct HMACSHA256Context m;
        uint8_t res[32];
 
        if (!req->transport->signing.doing_signing ||
@@ -85,11 +85,9 @@ NTSTATUS smb2_sign_message(struct smb2_request *req)
        SIVAL(buf->hdr, SMB2_HDR_FLAGS, IVAL(buf->hdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_SIGNED);
 
        ZERO_STRUCT(m);
-       SHA256_Init(&m);
-       SHA256_Update(&m, req->transport->signing.session_key.data, 
-                     req->transport->signing.session_key.length);
-       SHA256_Update(&m, buf->buffer+NBT_HDR_SIZE, buf->size-NBT_HDR_SIZE);
-       SHA256_Final(res, &m);
+       hmac_sha256_init(req->transport->signing.session_key.data, 16, &m);
+       hmac_sha256_update(buf->buffer+NBT_HDR_SIZE, buf->size-NBT_HDR_SIZE, &m);
+       hmac_sha256_final(res, &m);
 
        DEBUG(5,("signed SMB2 message of size %u\n", (unsigned)buf->size - NBT_HDR_SIZE));
 
@@ -110,7 +108,7 @@ NTSTATUS smb2_check_signature(struct smb2_transport *transport,
                              uint8_t *buffer, uint_t length)
 {
        uint64_t session_id;
-       SHA256_CTX m;
+       struct HMACSHA256Context m;
        uint8_t res[SHA256_DIGEST_LENGTH];
        uint8_t sig[16];
 
@@ -147,10 +145,9 @@ NTSTATUS smb2_check_signature(struct smb2_transport *transport,
        memset(buffer + NBT_HDR_SIZE + SMB2_HDR_SIGNATURE, 0, 16);
 
        ZERO_STRUCT(m);
-       SHA256_Init(&m);
-       SHA256_Update(&m, transport->signing.session_key.data,    16);
-       SHA256_Update(&m, buffer+NBT_HDR_SIZE, length-NBT_HDR_SIZE);
-       SHA256_Final(res, &m);
+       hmac_sha256_init(transport->signing.session_key.data, 16, &m);
+       hmac_sha256_update(buffer+NBT_HDR_SIZE, length-NBT_HDR_SIZE, &m);
+       hmac_sha256_final(res, &m);
 
        memcpy(buffer+NBT_HDR_SIZE+SMB2_HDR_SIGNATURE, sig, 16);