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path: root/fs/cifs/cifsencrypt.c
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Diffstat (limited to 'fs/cifs/cifsencrypt.c')
-rw-r--r--fs/cifs/cifsencrypt.c38
1 files changed, 23 insertions, 15 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 66f3d50d0676..a51585f9852b 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -24,7 +24,6 @@
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifs_debug.h"
-#include "md5.h"
#include "cifs_unicode.h"
#include "cifsproto.h"
#include "ntlmssp.h"
@@ -37,11 +36,6 @@
/* Note that the smb header signature field on input contains the
sequence number before this function is called */
-extern void mdfour(unsigned char *out, unsigned char *in, int n);
-extern void E_md4hash(const unsigned char *passwd, unsigned char *p16);
-extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8,
- unsigned char *p24);
-
static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
struct TCP_Server_Info *server, char *signature)
{
@@ -234,6 +228,7 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
/* first calculate 24 bytes ntlm response and then 16 byte session key */
int setup_ntlm_response(struct cifsSesInfo *ses)
{
+ int rc = 0;
unsigned int temp_len = CIFS_SESS_KEY_SIZE + CIFS_AUTH_RESP_SIZE;
char temp_key[CIFS_SESS_KEY_SIZE];
@@ -247,13 +242,26 @@ int setup_ntlm_response(struct cifsSesInfo *ses)
}
ses->auth_key.len = temp_len;
- SMBNTencrypt(ses->password, ses->server->cryptkey,
+ rc = SMBNTencrypt(ses->password, ses->server->cryptkey,
ses->auth_key.response + CIFS_SESS_KEY_SIZE);
+ if (rc) {
+ cFYI(1, "%s Can't generate NTLM response, error: %d",
+ __func__, rc);
+ return rc;
+ }
- E_md4hash(ses->password, temp_key);
- mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE);
+ rc = E_md4hash(ses->password, temp_key);
+ if (rc) {
+ cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc);
+ return rc;
+ }
- return 0;
+ rc = mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE);
+ if (rc)
+ cFYI(1, "%s Can't generate NTLM session key, error: %d",
+ __func__, rc);
+
+ return rc;
}
#ifdef CONFIG_CIFS_WEAK_PW_HASH
@@ -649,9 +657,10 @@ calc_seckey(struct cifsSesInfo *ses)
get_random_bytes(sec_key, CIFS_SESS_KEY_SIZE);
tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
- if (!tfm_arc4 || IS_ERR(tfm_arc4)) {
+ if (IS_ERR(tfm_arc4)) {
+ rc = PTR_ERR(tfm_arc4);
cERROR(1, "could not allocate crypto API arc4\n");
- return PTR_ERR(tfm_arc4);
+ return rc;
}
desc.tfm = tfm_arc4;
@@ -700,14 +709,13 @@ cifs_crypto_shash_allocate(struct TCP_Server_Info *server)
unsigned int size;
server->secmech.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0);
- if (!server->secmech.hmacmd5 ||
- IS_ERR(server->secmech.hmacmd5)) {
+ if (IS_ERR(server->secmech.hmacmd5)) {
cERROR(1, "could not allocate crypto hmacmd5\n");
return PTR_ERR(server->secmech.hmacmd5);
}
server->secmech.md5 = crypto_alloc_shash("md5", 0, 0);
- if (!server->secmech.md5 || IS_ERR(server->secmech.md5)) {
+ if (IS_ERR(server->secmech.md5)) {
cERROR(1, "could not allocate crypto md5\n");
rc = PTR_ERR(server->secmech.md5);
goto crypto_allocate_md5_fail;