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-rw-r--r--fs/cifs/cifsencrypt.c195
-rw-r--r--fs/cifs/cifsproto.h1
2 files changed, 136 insertions, 60 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index eaa2327ee7a..96908874a45 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);
-}
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 1e4728bcf06..edb6d90efdf 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -366,7 +366,6 @@ extern int cifs_verify_signature(struct smb_hdr *,
__u32 expected_sequence_number);
extern void SMBNTencrypt(unsigned char *, unsigned char *, unsigned char *);
extern int setup_ntlm_response(struct cifsSesInfo *);
-extern void CalcNTLMv2_response(const struct cifsSesInfo *);
extern int setup_ntlmv2_rsp(struct cifsSesInfo *, const struct nls_table *);
extern int cifs_crypto_shash_allocate(struct TCP_Server_Info *);
extern void cifs_crypto_shash_release(struct TCP_Server_Info *);
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-01 11:53:12 +0000