diff options
Diffstat (limited to 'fs/cifs/cifsencrypt.c')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index bd5f13d3845..d4839cf0cb2 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -37,7 +37,7 @@ 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, unsigned char *c8, +extern void SMBencrypt(unsigned char *passwd, const unsigned char *c8, unsigned char *p24); static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu, @@ -280,25 +280,22 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *ses, } #ifdef CONFIG_CIFS_WEAK_PW_HASH -void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key) +void calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt, + char *lnm_session_key) { int i; char password_with_pad[CIFS_ENCPWD_SIZE]; - if (ses->server == NULL) - return; - memset(password_with_pad, 0, CIFS_ENCPWD_SIZE); - if (ses->password) - strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE); - - if ((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0) - if (extended_security & CIFSSEC_MAY_PLNTXT) { - memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE); - memcpy(lnm_session_key, password_with_pad, - CIFS_ENCPWD_SIZE); - return; - } + if (password) + strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE); + + if (!encrypt && extended_security & CIFSSEC_MAY_PLNTXT) { + memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE); + memcpy(lnm_session_key, password_with_pad, + CIFS_ENCPWD_SIZE); + return; + } /* calculate old style session key */ /* calling toupper is less broken than repeatedly @@ -314,7 +311,8 @@ void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key) for (i = 0; i < CIFS_ENCPWD_SIZE; i++) password_with_pad[i] = toupper(password_with_pad[i]); - SMBencrypt(password_with_pad, ses->server->cryptKey, lnm_session_key); + SMBencrypt(password_with_pad, cryptkey, lnm_session_key); + /* clear password before we return/free memory */ memset(password_with_pad, 0, CIFS_ENCPWD_SIZE); } |