aboutsummaryrefslogtreecommitdiff
path: root/fs/cifs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/cifsencrypt.c193
-rw-r--r--fs/cifs/cifsglob.h7
2 files changed, 72 insertions, 128 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 709f2296bdb..eef78c24e0c 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -45,38 +45,39 @@ 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)
{
- int rc;
+ int rc = 0;
+ struct {
+ struct shash_desc shash;
+ char ctx[crypto_shash_descsize(server->ntlmssp.md5)];
+ } sdesc;
if (cifs_pdu == NULL || server == NULL || signature == NULL)
return -EINVAL;
- if (!server->ntlmssp.sdescmd5) {
- cERROR(1,
- "cifs_calculate_signature: can't generate signature\n");
- return -1;
- }
+ sdesc.shash.tfm = server->ntlmssp.md5;
+ sdesc.shash.flags = 0x0;
- rc = crypto_shash_init(&server->ntlmssp.sdescmd5->shash);
+ rc = crypto_shash_init(&sdesc.shash);
if (rc) {
- cERROR(1, "cifs_calculate_signature: oould not init md5\n");
+ cERROR(1, "could not initialize master crypto API hmacmd5\n");
return rc;
}
if (server->secType == RawNTLMSSP)
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
server->session_key.data.ntlmv2.key,
CIFS_NTLMV2_SESSKEY_SIZE);
else
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
(char *)&server->session_key.data,
server->session_key.len);
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
- rc = crypto_shash_final(&server->ntlmssp.sdescmd5->shash, signature);
+ rc = crypto_shash_final(&sdesc.shash, signature);
- return rc;
+ return 0;
}
@@ -114,28 +115,30 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
struct TCP_Server_Info *server, char *signature)
{
int i;
- int rc;
+ int rc = 0;
+ struct {
+ struct shash_desc shash;
+ char ctx[crypto_shash_descsize(server->ntlmssp.md5)];
+ } sdesc;
if (iov == NULL || server == NULL || signature == NULL)
return -EINVAL;
- if (!server->ntlmssp.sdescmd5) {
- cERROR(1, "cifs_calc_signature2: can't generate signature\n");
- return -1;
- }
+ sdesc.shash.tfm = server->ntlmssp.md5;
+ sdesc.shash.flags = 0x0;
- rc = crypto_shash_init(&server->ntlmssp.sdescmd5->shash);
+ rc = crypto_shash_init(&sdesc.shash);
if (rc) {
- cERROR(1, "cifs_calc_signature2: oould not init md5\n");
+ cERROR(1, "could not initialize master crypto API hmacmd5\n");
return rc;
}
if (server->secType == RawNTLMSSP)
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
server->session_key.data.ntlmv2.key,
CIFS_NTLMV2_SESSKEY_SIZE);
else
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
(char *)&server->session_key.data,
server->session_key.len);
@@ -143,7 +146,7 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
if (iov[i].iov_len == 0)
continue;
if (iov[i].iov_base == NULL) {
- cERROR(1, "cifs_calc_signature2: null iovec entry");
+ cERROR(1, "null iovec entry");
return -EIO;
}
/* The first entry includes a length field (which does not get
@@ -151,16 +154,16 @@ 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 */
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
iov[i].iov_base + 4, iov[i].iov_len - 4);
} else
- crypto_shash_update(&server->ntlmssp.sdescmd5->shash,
+ crypto_shash_update(&sdesc.shash,
iov[i].iov_base, iov[i].iov_len);
}
- rc = crypto_shash_final(&server->ntlmssp.sdescmd5->shash, signature);
+ rc = crypto_shash_final(&sdesc.shash, signature);
- return rc;
+ return 0;
}
int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
@@ -310,48 +313,43 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
wchar_t *user;
wchar_t *domain;
wchar_t *server;
-
- if (!ses->server->ntlmssp.sdeschmacmd5) {
- cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
- return -1;
- }
+ struct {
+ struct shash_desc shash;
+ char ctx[crypto_shash_descsize(ses->server->ntlmssp.hmacmd5)];
+ } sdesc;
/* calculate md4 hash of password */
E_md4hash(ses->password, nt_hash);
+ sdesc.shash.tfm = ses->server->ntlmssp.hmacmd5;
+ sdesc.shash.flags = 0x0;
+
crypto_shash_setkey(ses->server->ntlmssp.hmacmd5, nt_hash,
CIFS_NTHASH_SIZE);
- rc = crypto_shash_init(&ses->server->ntlmssp.sdeschmacmd5->shash);
+ rc = crypto_shash_init(&sdesc.shash);
if (rc) {
- cERROR(1, "calc_ntlmv2_hash: could not init hmacmd5\n");
+ cERROR(1, "could not initialize master crypto API 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) {
- cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
- rc = -ENOMEM;
+ if (user == NULL)
goto calc_exit_2;
- }
len = cifs_strtoUCS((__le16 *)user, ses->userName, len, nls_cp);
UniStrupr(user);
- crypto_shash_update(&ses->server->ntlmssp.sdeschmacmd5->shash,
- (char *)user, 2 * len);
+ crypto_shash_update(&sdesc.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) {
- cERROR(1, "calc_ntlmv2_hash: domain mem alloc failure");
- rc = -ENOMEM;
+ if (domain == NULL)
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
@@ -359,19 +357,15 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
Maybe converting the domain name earlier makes sense */
/* UniStrupr(domain); */
- crypto_shash_update(&ses->server->ntlmssp.sdeschmacmd5->shash,
- (char *)domain, 2 * len);
+ crypto_shash_update(&sdesc.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;
+ if (server == NULL)
goto calc_exit_1;
- }
len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
nls_cp);
/* the following line was removed since it didn't work well
@@ -379,20 +373,16 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
Maybe converting the domain name earlier makes sense */
/* UniStrupr(domain); */
- crypto_shash_update(&ses->server->ntlmssp.sdeschmacmd5->shash,
- (char *)server, 2 * len);
+ crypto_shash_update(&sdesc.shash, (char *)server, 2 * len);
kfree(server);
}
-
- rc = crypto_shash_final(&ses->server->ntlmssp.sdeschmacmd5->shash,
- ses->server->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 */
+ rc = crypto_shash_final(&sdesc.shash, ses->server->ntlmv2_hash);
return rc;
}
@@ -452,33 +442,34 @@ CalcNTLMv2_response(const struct TCP_Server_Info *server,
char *v2_session_response)
{
int rc;
+ struct {
+ struct shash_desc shash;
+ char ctx[crypto_shash_descsize(server->ntlmssp.hmacmd5)];
+ } sdesc;
- if (!server->ntlmssp.sdeschmacmd5) {
- cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
- return -1;
- }
+ sdesc.shash.tfm = server->ntlmssp.hmacmd5;
+ sdesc.shash.flags = 0x0;
crypto_shash_setkey(server->ntlmssp.hmacmd5, server->ntlmv2_hash,
CIFS_HMAC_MD5_HASH_SIZE);
- rc = crypto_shash_init(&server->ntlmssp.sdeschmacmd5->shash);
+ rc = crypto_shash_init(&sdesc.shash);
if (rc) {
- cERROR(1, "CalcNTLMv2_response: could not init hmacmd5");
+ cERROR(1, "could not initialize master crypto API hmacmd5\n");
return rc;
}
memcpy(v2_session_response + CIFS_SERVER_CHALLENGE_SIZE,
server->cryptKey, CIFS_SERVER_CHALLENGE_SIZE);
- crypto_shash_update(&server->ntlmssp.sdeschmacmd5->shash,
+ crypto_shash_update(&sdesc.shash,
v2_session_response + CIFS_SERVER_CHALLENGE_SIZE,
sizeof(struct ntlmv2_resp) - CIFS_SERVER_CHALLENGE_SIZE);
if (server->tilen)
- crypto_shash_update(&server->ntlmssp.sdeschmacmd5->shash,
+ crypto_shash_update(&sdesc.shash,
server->tiblob, server->tilen);
- rc = crypto_shash_final(&server->ntlmssp.sdeschmacmd5->shash,
- v2_session_response);
+ rc = crypto_shash_final(&sdesc.shash, v2_session_response);
return rc;
}
@@ -489,6 +480,10 @@ setup_ntlmv2_rsp(struct cifsSesInfo *ses, char *resp_buf,
{
int rc = 0;
struct ntlmv2_resp *buf = (struct ntlmv2_resp *)resp_buf;
+ struct {
+ struct shash_desc shash;
+ char ctx[crypto_shash_descsize(ses->server->ntlmssp.hmacmd5)];
+ } sdesc;
buf->blob_signature = cpu_to_le32(0x00000101);
buf->reserved = 0;
@@ -516,24 +511,21 @@ setup_ntlmv2_rsp(struct cifsSesInfo *ses, char *resp_buf,
return rc;
}
- if (!ses->server->ntlmssp.sdeschmacmd5) {
- cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
- return -1;
- }
-
crypto_shash_setkey(ses->server->ntlmssp.hmacmd5,
ses->server->ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
- rc = crypto_shash_init(&ses->server->ntlmssp.sdeschmacmd5->shash);
+ sdesc.shash.tfm = ses->server->ntlmssp.hmacmd5;
+ sdesc.shash.flags = 0x0;
+
+ rc = crypto_shash_init(&sdesc.shash);
if (rc) {
- cERROR(1, "setup_ntlmv2_rsp: could not init hmacmd5\n");
+ cERROR(1, "could not initialize master crypto API hmacmd5\n");
return rc;
}
- crypto_shash_update(&ses->server->ntlmssp.sdeschmacmd5->shash,
- resp_buf, CIFS_HMAC_MD5_HASH_SIZE);
+ crypto_shash_update(&sdesc.shash, resp_buf, CIFS_HMAC_MD5_HASH_SIZE);
- rc = crypto_shash_final(&ses->server->ntlmssp.sdeschmacmd5->shash,
+ rc = crypto_shash_final(&sdesc.shash,
ses->server->session_key.data.ntlmv2.key);
memcpy(&ses->server->session_key.data.ntlmv2.resp, resp_buf,
@@ -586,65 +578,24 @@ cifs_crypto_shash_release(struct TCP_Server_Info *server)
if (server->ntlmssp.hmacmd5)
crypto_free_shash(server->ntlmssp.hmacmd5);
-
- kfree(server->ntlmssp.sdeschmacmd5);
-
- kfree(server->ntlmssp.sdescmd5);
}
int
cifs_crypto_shash_allocate(struct TCP_Server_Info *server)
{
- int rc;
- unsigned int size;
-
server->ntlmssp.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0);
if (!server->ntlmssp.hmacmd5 ||
IS_ERR(server->ntlmssp.hmacmd5)) {
- cERROR(1, "could not allocate crypto hmacmd5\n");
+ cERROR(1, "could not allocate master crypto API hmacmd5\n");
return 1;
}
server->ntlmssp.md5 = crypto_alloc_shash("md5", 0, 0);
if (!server->ntlmssp.md5 || IS_ERR(server->ntlmssp.md5)) {
- cERROR(1, "could not allocate crypto md5\n");
- rc = 1;
- goto cifs_crypto_shash_allocate_ret1;
- }
-
- size = sizeof(struct shash_desc) +
- crypto_shash_descsize(server->ntlmssp.hmacmd5);
- server->ntlmssp.sdeschmacmd5 = kmalloc(size, GFP_KERNEL);
- if (!server->ntlmssp.sdeschmacmd5) {
- cERROR(1, "cifs_crypto_shash_allocate: can't alloc hmacmd5\n");
- rc = -ENOMEM;
- goto cifs_crypto_shash_allocate_ret2;
- }
- server->ntlmssp.sdeschmacmd5->shash.tfm = server->ntlmssp.hmacmd5;
- server->ntlmssp.sdeschmacmd5->shash.flags = 0x0;
-
-
- size = sizeof(struct shash_desc) +
- crypto_shash_descsize(server->ntlmssp.md5);
- server->ntlmssp.sdescmd5 = kmalloc(size, GFP_KERNEL);
- if (!server->ntlmssp.sdescmd5) {
- cERROR(1, "cifs_crypto_shash_allocate: can't alloc md5\n");
- rc = -ENOMEM;
- goto cifs_crypto_shash_allocate_ret3;
+ crypto_free_shash(server->ntlmssp.hmacmd5);
+ cERROR(1, "could not allocate master crypto API md5\n");
+ return 1;
}
- server->ntlmssp.sdescmd5->shash.tfm = server->ntlmssp.md5;
- server->ntlmssp.sdescmd5->shash.flags = 0x0;
return 0;
-
-cifs_crypto_shash_allocate_ret3:
- kfree(server->ntlmssp.sdeschmacmd5);
-
-cifs_crypto_shash_allocate_ret2:
- crypto_free_shash(server->ntlmssp.md5);
-
-cifs_crypto_shash_allocate_ret1:
- crypto_free_shash(server->ntlmssp.hmacmd5);
-
- return rc;
}
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c9d0cfc086e..49563e0c172 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -123,19 +123,12 @@ struct cifs_cred {
struct cifs_ace *aces;
};
-struct sdesc {
- struct shash_desc shash;
- char ctx[];
-};
-
struct ntlmssp_auth {
__u32 client_flags;
__u32 server_flags;
unsigned char ciphertext[CIFS_CPHTXT_SIZE];
struct crypto_shash *hmacmd5;
struct crypto_shash *md5;
- struct sdesc *sdeschmacmd5;
- struct sdesc *sdescmd5;
};
/*
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 00:33:26 +0000