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authorSteve French <sfrench@us.ibm.com>2006-06-01 19:20:10 +0000
committerSteve French <sfrench@us.ibm.com>2006-06-01 19:20:10 +0000
commit7c7b25bc8e392aea781324efa771bc191377b876 (patch)
treeddad1a91f948746dbef140994c615253a7f42e65 /fs/cifs/cifsencrypt.c
parent9c53588ec96d85f82e9bf3fb1af7cca31056e940 (diff)
[CIFS] Support for setting up SMB sessions to legacy lanman servers part 2
Diffstat (limited to 'fs/cifs/cifsencrypt.c')
-rw-r--r--fs/cifs/cifsencrypt.c40
1 files changed, 37 insertions, 3 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 08781a4698b4..e11d8c6bb227 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -26,6 +26,7 @@
#include "md5.h"
#include "cifs_unicode.h"
#include "cifsproto.h"
+#include <linux/ctype.h>
/* Calculate and return the CIFS signature based on the mac key and the smb pdu */
/* the 16 byte signature must be allocated by the caller */
@@ -35,6 +36,8 @@
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,
+ unsigned char *p24);
static int cifs_calculate_signature(const struct smb_hdr * cifs_pdu,
const char * key, char * signature)
@@ -45,7 +48,7 @@ static int cifs_calculate_signature(const struct smb_hdr * cifs_pdu,
return -EINVAL;
MD5Init(&context);
- MD5Update(&context,key,CIFS_SESSION_KEY_SIZE+16);
+ MD5Update(&context,key,CIFS_SESS_KEY_SIZE+16);
MD5Update(&context,cifs_pdu->Protocol,cifs_pdu->smb_buf_length);
MD5Final(signature,&context);
return 0;
@@ -90,7 +93,7 @@ static int cifs_calc_signature2(const struct kvec * iov, int n_vec,
return -EINVAL;
MD5Init(&context);
- MD5Update(&context,key,CIFS_SESSION_KEY_SIZE+16);
+ MD5Update(&context,key,CIFS_SESS_KEY_SIZE+16);
for(i=0;i<n_vec;i++) {
if(iov[i].iov_base == NULL) {
cERROR(1,("null iovec entry"));
@@ -204,7 +207,7 @@ int cifs_calculate_mac_key(char * key, const char * rn, const char * password)
E_md4hash(password, temp_key);
mdfour(key,temp_key,16);
- memcpy(key+16,rn, CIFS_SESSION_KEY_SIZE);
+ memcpy(key+16,rn, CIFS_SESS_KEY_SIZE);
return 0;
}
@@ -261,6 +264,37 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, struct nls_table * nls_
kfree(unicode_buf);
return 0;
}
+
+#ifdef CONFIG_CIFS_WEAK_PW_HASH
+void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
+{
+ int i;
+ char password_with_pad[CIFS_ENCPWD_SIZE];
+
+ memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
+ strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
+
+ /* calculate old style session key */
+ /* calling toupper is less broken than repeatedly
+ calling nls_toupper would be since that will never
+ work for UTF8, but neither handles multibyte code pages
+ but the only alternative would be converting to UCS-16 (Unicode)
+ (using a routine something like UniStrupr) then
+ uppercasing and then converting back from Unicode - which
+ would only worth doing it if we knew it were utf8. Basically
+ utf8 and other multibyte codepages each need their own strupper
+ function since a byte at a time will ont work. */
+
+ 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);
+ /* clear password before we return/free memory */
+ memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
+}
+#endif /* CIFS_WEAK_PW_HASH */
+
void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_response)
{
struct HMACMD5Context context;