1 files changed, 136 insertions, 59 deletions

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index eaa2327ee7af..96908874a45c 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -45,17 +45,30 @@ extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
 static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
                                 struct TCP_Server_Info *server, char *signature)
 {
-        struct  MD5Context context;
+        int rc;
 
         if (cifs_pdu == NULL || signature == NULL || server == NULL)
                 return -EINVAL;
 
-        cifs_MD5_init(&context);
-        cifs_MD5_update(&context, server->session_key.response,
-                        server->session_key.len);
-        cifs_MD5_update(&context, cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
+        if (!server->secmech.sdescmd5) {
+                cERROR(1, "%s: Can't generate signature\n", __func__);
+                return -1;
+        }
+
+        rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
+        if (rc) {
+                cERROR(1, "%s: Oould not init md5\n", __func__);
+                return rc;
+        }
+
+        crypto_shash_update(&server->secmech.sdescmd5->shash,
+                server->session_key.response, server->session_key.len);
+
+        crypto_shash_update(&server->secmech.sdescmd5->shash,
+                cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
+
+        rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
 
-        cifs_MD5_final(signature, &context);
         return 0;
 }
 
@@ -92,15 +105,26 @@ int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
 static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
                                 struct TCP_Server_Info *server, char *signature)
 {
-        struct  MD5Context context;
         int i;
+        int rc;
 
         if (iov == NULL || signature == NULL || server == NULL)
                 return -EINVAL;
 
-        cifs_MD5_init(&context);
-        cifs_MD5_update(&context, server->session_key.response,
-                                server->session_key.len);
+        if (!server->secmech.sdescmd5) {
+                cERROR(1, "%s: Can't generate signature\n", __func__);
+                return -1;
+        }
+
+        rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
+        if (rc) {
+                cERROR(1, "%s: Oould not init md5\n", __func__);
+                return rc;
+        }
+
+        crypto_shash_update(&server->secmech.sdescmd5->shash,
+                server->session_key.response, server->session_key.len);
+
         for (i = 0; i < n_vec; i++) {
                 if (iov[i].iov_len == 0)
                         continue;
@@ -113,18 +137,18 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
                 if (i == 0) {
                         if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
                                 break; /* nothing to sign or corrupt header */
-                        cifs_MD5_update(&context, iov[0].iov_base+4,
-                                  iov[0].iov_len-4);
+                        crypto_shash_update(&server->secmech.sdescmd5->shash,
+                                iov[i].iov_base + 4, iov[i].iov_len - 4);
                 } else
-                        cifs_MD5_update(&context, iov[i].iov_base, iov[i].iov_len);
+                        crypto_shash_update(&server->secmech.sdescmd5->shash,
+                                iov[i].iov_base, iov[i].iov_len);
         }
 
-        cifs_MD5_final(signature, &context);
+        rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
 
-        return 0;
+        return rc;
 }
 
-
 int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
                    __u32 *pexpected_response_sequence_number)
 {
@@ -420,67 +444,120 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
 {
         int rc = 0;
         int len;
-        char nt_hash[16];
-        struct HMACMD5Context *pctxt;
+        char nt_hash[CIFS_NTHASH_SIZE];
         wchar_t *user;
         wchar_t *domain;
+        wchar_t *server;
 
-        pctxt = kmalloc(sizeof(struct HMACMD5Context), GFP_KERNEL);
-
-        if (pctxt == NULL)
-                return -ENOMEM;
+        if (!ses->server->secmech.sdeschmacmd5) {
+                cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
+                return -1;
+        }
 
         /* calculate md4 hash of password */
         E_md4hash(ses->password, nt_hash);
 
-        /* convert Domainname to unicode and uppercase */
-        hmac_md5_init_limK_to_64(nt_hash, 16, pctxt);
+        crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash,
+                                CIFS_NTHASH_SIZE);
+
+        rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+        if (rc) {
+                cERROR(1, "calc_ntlmv2_hash: could not init hmacmd5\n");
+                return rc;
+        }
 
         /* convert ses->userName to unicode and uppercase */
         len = strlen(ses->userName);
         user = kmalloc(2 + (len * 2), GFP_KERNEL);
-        if (user == NULL)
+        if (user == NULL) {
+                cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
+                rc = -ENOMEM;
                 goto calc_exit_2;
+        }
         len = cifs_strtoUCS((__le16 *)user, ses->userName, len, nls_cp);
         UniStrupr(user);
-        hmac_md5_update((char *)user, 2*len, pctxt);
+
+        crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+                                (char *)user, 2 * len);
 
         /* convert ses->domainName to unicode and uppercase */
         if (ses->domainName) {
                 len = strlen(ses->domainName);
 
                 domain = kmalloc(2 + (len * 2), GFP_KERNEL);
-                if (domain == NULL)
+                if (domain == NULL) {
+                        cERROR(1, "calc_ntlmv2_hash: domain mem alloc failure");
+                        rc = -ENOMEM;
                         goto calc_exit_1;
+                }
                 len = cifs_strtoUCS((__le16 *)domain, ses->domainName, len,
                                         nls_cp);
-                /* the following line was removed since it didn't work well
-                   with lower cased domain name that passed as an option.
-                   Maybe converting the domain name earlier makes sense */
-                /* UniStrupr(domain); */
-
-                hmac_md5_update((char *)domain, 2*len, pctxt);
-
+                crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+                                        (char *)domain, 2 * len);
                 kfree(domain);
+        } else if (ses->serverName) {
+                len = strlen(ses->serverName);
+
+                server = kmalloc(2 + (len * 2), GFP_KERNEL);
+                if (server == NULL) {
+                        cERROR(1, "calc_ntlmv2_hash: server mem alloc failure");
+                        rc = -ENOMEM;
+                        goto calc_exit_1;
+                }
+                len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
+                                        nls_cp);
+                crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+                                        (char *)server, 2 * len);
+                kfree(server);
         }
+
+        rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+                                        ses->ntlmv2_hash);
+
 calc_exit_1:
         kfree(user);
 calc_exit_2:
-        /* BB FIXME what about bytes 24 through 40 of the signing key?
-           compare with the NTLM example */
-        hmac_md5_final(ses->ntlmv2_hash, pctxt);
+        return rc;
+}
+
+static int
+CalcNTLMv2_response(const struct cifsSesInfo *ses)
+{
+        int rc;
+        unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
+
+        if (!ses->server->secmech.sdeschmacmd5) {
+                cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
+                return -1;
+        }
+
+        crypto_shash_setkey(ses->server->secmech.hmacmd5,
+                                ses->ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
+
+        rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+        if (rc) {
+                cERROR(1, "CalcNTLMv2_response: could not init hmacmd5");
+                return rc;
+        }
+
+        memcpy(ses->auth_key.response + offset,
+                ses->cryptKey, CIFS_SERVER_CHALLENGE_SIZE);
+        crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+                ses->auth_key.response + offset, ses->auth_key.len - offset);
+
+        rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+                ses->auth_key.response + CIFS_SESS_KEY_SIZE);
 
-        kfree(pctxt);
         return rc;
 }
 
+
 int
 setup_ntlmv2_rsp(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
 {
         int rc;
         int baselen;
         struct ntlmv2_resp *buf;
-        struct HMACMD5Context context;
 
         if (ses->server->secType == RawNTLMSSP) {
                 if (!ses->domainName) {
@@ -523,13 +600,28 @@ setup_ntlmv2_rsp(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
                 cERROR(1, "could not get v2 hash rc %d", rc);
                 goto setup_ntlmv2_rsp_ret;
         }
-        CalcNTLMv2_response(ses);
+        rc = CalcNTLMv2_response(ses);
+        if (rc) {
+                cERROR(1, "Could not calculate CR1  rc: %d", rc);
+                goto setup_ntlmv2_rsp_ret;
+        }
 
         /* now calculate the session key for NTLMv2 */
-        hmac_md5_init_limK_to_64(ses->ntlmv2_hash, 16, &context);
-        hmac_md5_update(ses->auth_key.response + CIFS_SESS_KEY_SIZE,
-                                16, &context);
-        hmac_md5_final(ses->auth_key.response, &context);
+        crypto_shash_setkey(ses->server->secmech.hmacmd5,
+                ses->ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
+
+        rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+        if (rc) {
+                cERROR(1, "%s: Could not init hmacmd5\n", __func__);
+                goto setup_ntlmv2_rsp_ret;
+        }
+
+        crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+                ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+                CIFS_HMAC_MD5_HASH_SIZE);
+
+        rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+                ses->auth_key.response);
 
         return 0;
 
@@ -653,18 +745,3 @@ crypto_allocate_md5_fail:
 
         return rc;
 }
-
-void CalcNTLMv2_response(const struct cifsSesInfo *ses)
-{
-        unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
-        struct HMACMD5Context context;
-
-        /* rest of v2 struct already generated */
-        memcpy(ses->auth_key.response + offset, ses->cryptKey, 8);
-        hmac_md5_init_limK_to_64(ses->ntlmv2_hash, 16, &context);
-
-        hmac_md5_update(ses->auth_key.response + offset,
-                        ses->auth_key.len - offset, &context);
-
-        hmac_md5_final(ses->auth_key.response + CIFS_SESS_KEY_SIZE, &context);
-}