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Diffstat (limited to 'fs/cifs/cifsencrypt.c')
-rw-r--r--fs/cifs/cifsencrypt.c294
1 files changed, 171 insertions, 123 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 63c460e503b6..ce2d33193216 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -1,7 +1,7 @@
/*
* fs/cifs/cifsencrypt.c
*
- * Copyright (C) International Business Machines Corp., 2005,2006
+ * Copyright (C) International Business Machines Corp., 2005,2013
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
@@ -29,6 +29,37 @@
#include "ntlmssp.h"
#include <linux/ctype.h>
#include <linux/random.h>
+#include <linux/highmem.h>
+
+static int
+cifs_crypto_shash_md5_allocate(struct TCP_Server_Info *server)
+{
+ int rc;
+ unsigned int size;
+
+ if (server->secmech.sdescmd5 != NULL)
+ return 0; /* already allocated */
+
+ server->secmech.md5 = crypto_alloc_shash("md5", 0, 0);
+ if (IS_ERR(server->secmech.md5)) {
+ cifs_dbg(VFS, "could not allocate crypto md5\n");
+ return PTR_ERR(server->secmech.md5);
+ }
+
+ size = sizeof(struct shash_desc) +
+ crypto_shash_descsize(server->secmech.md5);
+ server->secmech.sdescmd5 = kmalloc(size, GFP_KERNEL);
+ if (!server->secmech.sdescmd5) {
+ rc = -ENOMEM;
+ crypto_free_shash(server->secmech.md5);
+ server->secmech.md5 = NULL;
+ return rc;
+ }
+ server->secmech.sdescmd5->shash.tfm = server->secmech.md5;
+ server->secmech.sdescmd5->shash.flags = 0x0;
+
+ return 0;
+}
/*
* Calculate and return the CIFS signature based on the mac key and SMB PDU.
@@ -37,30 +68,35 @@
* the sequence number before this function is called. Also, this function
* should be called with the server->srv_mutex held.
*/
-static int cifs_calc_signature(const struct kvec *iov, int n_vec,
+static int cifs_calc_signature(struct smb_rqst *rqst,
struct TCP_Server_Info *server, char *signature)
{
int i;
int rc;
+ struct kvec *iov = rqst->rq_iov;
+ int n_vec = rqst->rq_nvec;
if (iov == NULL || signature == NULL || server == NULL)
return -EINVAL;
if (!server->secmech.sdescmd5) {
- cERROR(1, "%s: Can't generate signature\n", __func__);
- return -1;
+ rc = cifs_crypto_shash_md5_allocate(server);
+ if (rc) {
+ cifs_dbg(VFS, "%s: Can't alloc md5 crypto\n", __func__);
+ return -1;
+ }
}
rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
if (rc) {
- cERROR(1, "%s: Could not init md5\n", __func__);
+ cifs_dbg(VFS, "%s: Could not init md5\n", __func__);
return rc;
}
rc = crypto_shash_update(&server->secmech.sdescmd5->shash,
server->session_key.response, server->session_key.len);
if (rc) {
- cERROR(1, "%s: Could not update with response\n", __func__);
+ cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
return rc;
}
@@ -68,7 +104,7 @@ static int cifs_calc_signature(const struct kvec *iov, int n_vec,
if (iov[i].iov_len == 0)
continue;
if (iov[i].iov_base == NULL) {
- cERROR(1, "null iovec entry");
+ cifs_dbg(VFS, "null iovec entry\n");
return -EIO;
}
/* The first entry includes a length field (which does not get
@@ -85,26 +121,36 @@ static int cifs_calc_signature(const struct kvec *iov, int n_vec,
iov[i].iov_base, iov[i].iov_len);
}
if (rc) {
- cERROR(1, "%s: Could not update with payload\n",
- __func__);
+ cifs_dbg(VFS, "%s: Could not update with payload\n",
+ __func__);
return rc;
}
}
+ /* now hash over the rq_pages array */
+ for (i = 0; i < rqst->rq_npages; i++) {
+ struct kvec p_iov;
+
+ cifs_rqst_page_to_kvec(rqst, i, &p_iov);
+ crypto_shash_update(&server->secmech.sdescmd5->shash,
+ p_iov.iov_base, p_iov.iov_len);
+ kunmap(rqst->rq_pages[i]);
+ }
+
rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
if (rc)
- cERROR(1, "%s: Could not generate md5 hash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
return rc;
}
/* must be called with server->srv_mutex held */
-int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
+int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number)
{
int rc = 0;
char smb_signature[20];
- struct smb_hdr *cifs_pdu = (struct smb_hdr *)iov[0].iov_base;
+ struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
if ((cifs_pdu == NULL) || (server == NULL))
return -EINVAL;
@@ -122,10 +168,10 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
cpu_to_le32(server->sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
- *pexpected_response_sequence_number = server->sequence_number++;
- server->sequence_number++;
+ *pexpected_response_sequence_number = ++server->sequence_number;
+ ++server->sequence_number;
- rc = cifs_calc_signature(iov, n_vec, server, smb_signature);
+ rc = cifs_calc_signature(rqst, server, smb_signature);
if (rc)
memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
else
@@ -134,6 +180,15 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
return rc;
}
+int cifs_sign_smbv(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
+ __u32 *pexpected_response_sequence)
+{
+ struct smb_rqst rqst = { .rq_iov = iov,
+ .rq_nvec = n_vec };
+
+ return cifs_sign_rqst(&rqst, server, pexpected_response_sequence);
+}
+
/* must be called with server->srv_mutex held */
int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number)
@@ -143,18 +198,18 @@ int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
iov.iov_base = cifs_pdu;
iov.iov_len = be32_to_cpu(cifs_pdu->smb_buf_length) + 4;
- return cifs_sign_smb2(&iov, 1, server,
+ return cifs_sign_smbv(&iov, 1, server,
pexpected_response_sequence_number);
}
-int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
+int cifs_verify_signature(struct smb_rqst *rqst,
struct TCP_Server_Info *server,
__u32 expected_sequence_number)
{
unsigned int rc;
char server_response_sig[8];
char what_we_think_sig_should_be[20];
- struct smb_hdr *cifs_pdu = (struct smb_hdr *)iov[0].iov_base;
+ struct smb_hdr *cifs_pdu = (struct smb_hdr *)rqst->rq_iov[0].iov_base;
if (cifs_pdu == NULL || server == NULL)
return -EINVAL;
@@ -174,8 +229,8 @@ int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
/* Do not need to verify session setups with signature "BSRSPYL " */
if (memcmp(cifs_pdu->Signature.SecuritySignature, "BSRSPYL ", 8) == 0)
- cFYI(1, "dummy signature received for smb command 0x%x",
- cifs_pdu->Command);
+ cifs_dbg(FYI, "dummy signature received for smb command 0x%x\n",
+ cifs_pdu->Command);
/* save off the origiginal signature so we can modify the smb and check
its signature against what the server sent */
@@ -186,8 +241,7 @@ int cifs_verify_signature(struct kvec *iov, unsigned int nr_iov,
cifs_pdu->Signature.Sequence.Reserved = 0;
mutex_lock(&server->srv_mutex);
- rc = cifs_calc_signature(iov, nr_iov, server,
- what_we_think_sig_should_be);
+ rc = cifs_calc_signature(rqst, server, what_we_think_sig_should_be);
mutex_unlock(&server->srv_mutex);
if (rc)
@@ -214,30 +268,30 @@ int setup_ntlm_response(struct cifs_ses *ses, const struct nls_table *nls_cp)
return -EINVAL;
ses->auth_key.response = kmalloc(temp_len, GFP_KERNEL);
- if (!ses->auth_key.response) {
- cERROR(1, "NTLM can't allocate (%u bytes) memory", temp_len);
+ if (!ses->auth_key.response)
return -ENOMEM;
- }
+
ses->auth_key.len = temp_len;
rc = SMBNTencrypt(ses->password, ses->server->cryptkey,
ses->auth_key.response + CIFS_SESS_KEY_SIZE, nls_cp);
if (rc) {
- cFYI(1, "%s Can't generate NTLM response, error: %d",
- __func__, rc);
+ cifs_dbg(FYI, "%s Can't generate NTLM response, error: %d\n",
+ __func__, rc);
return rc;
}
rc = E_md4hash(ses->password, temp_key, nls_cp);
if (rc) {
- cFYI(1, "%s Can't generate NT hash, error: %d", __func__, rc);
+ cifs_dbg(FYI, "%s Can't generate NT hash, error: %d\n",
+ __func__, rc);
return rc;
}
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);
+ cifs_dbg(FYI, "%s Can't generate NTLM session key, error: %d\n",
+ __func__, rc);
return rc;
}
@@ -255,7 +309,6 @@ int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE);
if (!encrypt && global_secflags & CIFSSEC_MAY_PLNTXT) {
- memset(lnm_session_key, 0, CIFS_SESS_KEY_SIZE);
memcpy(lnm_session_key, password_with_pad,
CIFS_ENCPWD_SIZE);
return 0;
@@ -313,7 +366,6 @@ build_avpair_blob(struct cifs_ses *ses, const struct nls_table *nls_cp)
ses->auth_key.response = kzalloc(ses->auth_key.len, GFP_KERNEL);
if (!ses->auth_key.response) {
ses->auth_key.len = 0;
- cERROR(1, "Challenge target info allocation failure");
return -ENOMEM;
}
@@ -369,7 +421,7 @@ find_domain_name(struct cifs_ses *ses, const struct nls_table *nls_cp)
if (blobptr + attrsize > blobend)
break;
if (type == NTLMSSP_AV_NB_DOMAIN_NAME) {
- if (!attrsize)
+ if (!attrsize || attrsize >= MAX_CIF_DOMAINNAME)
break;
if (!ses->domainName) {
ses->domainName =
@@ -394,12 +446,12 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
int rc = 0;
int len;
char nt_hash[CIFS_NTHASH_SIZE];
- wchar_t *user;
+ __le16 *user;
wchar_t *domain;
wchar_t *server;
if (!ses->server->secmech.sdeschmacmd5) {
- cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
+ cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__);
return -1;
}
@@ -409,27 +461,26 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
rc = crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash,
CIFS_NTHASH_SIZE);
if (rc) {
- cERROR(1, "%s: Could not set NT Hash as a key", __func__);
+ cifs_dbg(VFS, "%s: Could not set NT Hash as a key\n", __func__);
return rc;
}
rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
if (rc) {
- cERROR(1, "calc_ntlmv2_hash: could not init hmacmd5\n");
+ cifs_dbg(VFS, "%s: could not init hmacmd5\n", __func__);
return rc;
}
- /* convert ses->user_name to unicode and uppercase */
+ /* convert ses->user_name to unicode */
len = ses->user_name ? strlen(ses->user_name) : 0;
user = kmalloc(2 + (len * 2), GFP_KERNEL);
if (user == NULL) {
- cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
rc = -ENOMEM;
return rc;
}
if (len) {
- len = cifs_strtoUTF16((__le16 *)user, ses->user_name, len, nls_cp);
+ len = cifs_strtoUTF16(user, ses->user_name, len, nls_cp);
UniStrupr(user);
} else {
memset(user, '\0', 2);
@@ -439,7 +490,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
(char *)user, 2 * len);
kfree(user);
if (rc) {
- cERROR(1, "%s: Could not update with user\n", __func__);
+ cifs_dbg(VFS, "%s: Could not update with user\n", __func__);
return rc;
}
@@ -449,7 +500,6 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
domain = kmalloc(2 + (len * 2), GFP_KERNEL);
if (domain == NULL) {
- cERROR(1, "calc_ntlmv2_hash: domain mem alloc failure");
rc = -ENOMEM;
return rc;
}
@@ -460,8 +510,8 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
(char *)domain, 2 * len);
kfree(domain);
if (rc) {
- cERROR(1, "%s: Could not update with domain\n",
- __func__);
+ cifs_dbg(VFS, "%s: Could not update with domain\n",
+ __func__);
return rc;
}
} else if (ses->serverName) {
@@ -469,7 +519,6 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
server = kmalloc(2 + (len * 2), GFP_KERNEL);
if (server == NULL) {
- cERROR(1, "calc_ntlmv2_hash: server mem alloc failure");
rc = -ENOMEM;
return rc;
}
@@ -480,8 +529,8 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
(char *)server, 2 * len);
kfree(server);
if (rc) {
- cERROR(1, "%s: Could not update with server\n",
- __func__);
+ cifs_dbg(VFS, "%s: Could not update with server\n",
+ __func__);
return rc;
}
}
@@ -489,7 +538,7 @@ static int calc_ntlmv2_hash(struct cifs_ses *ses, char *ntlmv2_hash,
rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
ntlmv2_hash);
if (rc)
- cERROR(1, "%s: Could not generate md5 hash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
return rc;
}
@@ -501,24 +550,25 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
if (!ses->server->secmech.sdeschmacmd5) {
- cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
+ cifs_dbg(VFS, "%s: can't generate ntlmv2 hash\n", __func__);
return -1;
}
rc = crypto_shash_setkey(ses->server->secmech.hmacmd5,
ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
if (rc) {
- cERROR(1, "%s: Could not set NTLMV2 Hash as a key", __func__);
+ cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n",
+ __func__);
return rc;
}
rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
if (rc) {
- cERROR(1, "CalcNTLMv2_response: could not init hmacmd5");
+ cifs_dbg(VFS, "%s: could not init hmacmd5\n", __func__);
return rc;
}
- if (ses->server->secType == RawNTLMSSP)
+ if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED)
memcpy(ses->auth_key.response + offset,
ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
else
@@ -527,18 +577,45 @@ CalcNTLMv2_response(const struct cifs_ses *ses, char *ntlmv2_hash)
rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
ses->auth_key.response + offset, ses->auth_key.len - offset);
if (rc) {
- cERROR(1, "%s: Could not update with response\n", __func__);
+ cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
return rc;
}
rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
ses->auth_key.response + CIFS_SESS_KEY_SIZE);
if (rc)
- cERROR(1, "%s: Could not generate md5 hash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
return rc;
}
+static int crypto_hmacmd5_alloc(struct TCP_Server_Info *server)
+{
+ unsigned int size;
+
+ /* check if already allocated */
+ if (server->secmech.sdeschmacmd5)
+ return 0;
+
+ server->secmech.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0);
+ if (IS_ERR(server->secmech.hmacmd5)) {
+ cifs_dbg(VFS, "could not allocate crypto hmacmd5\n");
+ return PTR_ERR(server->secmech.hmacmd5);
+ }
+
+ size = sizeof(struct shash_desc) +
+ crypto_shash_descsize(server->secmech.hmacmd5);
+ server->secmech.sdeschmacmd5 = kmalloc(size, GFP_KERNEL);
+ if (!server->secmech.sdeschmacmd5) {
+ crypto_free_shash(server->secmech.hmacmd5);
+ server->secmech.hmacmd5 = NULL;
+ return -ENOMEM;
+ }
+ server->secmech.sdeschmacmd5->shash.tfm = server->secmech.hmacmd5;
+ server->secmech.sdeschmacmd5->shash.flags = 0x0;
+
+ return 0;
+}
int
setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
@@ -550,18 +627,19 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
char ntlmv2_hash[16];
unsigned char *tiblob = NULL; /* target info blob */
- if (ses->server->secType == RawNTLMSSP) {
+ if (ses->server->negflavor == CIFS_NEGFLAVOR_EXTENDED) {
if (!ses->domainName) {
rc = find_domain_name(ses, nls_cp);
if (rc) {
- cERROR(1, "error %d finding domain name", rc);
+ cifs_dbg(VFS, "error %d finding domain name\n",
+ rc);
goto setup_ntlmv2_rsp_ret;
}
}
} else {
rc = build_avpair_blob(ses, nls_cp);
if (rc) {
- cERROR(1, "error %d building av pair blob", rc);
+ cifs_dbg(VFS, "error %d building av pair blob\n", rc);
goto setup_ntlmv2_rsp_ret;
}
}
@@ -574,7 +652,6 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
if (!ses->auth_key.response) {
rc = ENOMEM;
ses->auth_key.len = 0;
- cERROR(1, "%s: Can't allocate auth blob", __func__);
goto setup_ntlmv2_rsp_ret;
}
ses->auth_key.len += baselen;
@@ -589,17 +666,23 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
memcpy(ses->auth_key.response + baselen, tiblob, tilen);
+ rc = crypto_hmacmd5_alloc(ses->server);
+ if (rc) {
+ cifs_dbg(VFS, "could not crypto alloc hmacmd5 rc %d\n", rc);
+ goto setup_ntlmv2_rsp_ret;
+ }
+
/* calculate ntlmv2_hash */
rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp);
if (rc) {
- cERROR(1, "could not get v2 hash rc %d", rc);
+ cifs_dbg(VFS, "could not get v2 hash rc %d\n", rc);
goto setup_ntlmv2_rsp_ret;
}
/* calculate first part of the client response (CR1) */
rc = CalcNTLMv2_response(ses, ntlmv2_hash);
if (rc) {
- cERROR(1, "Could not calculate CR1 rc: %d", rc);
+ cifs_dbg(VFS, "Could not calculate CR1 rc: %d\n", rc);
goto setup_ntlmv2_rsp_ret;
}
@@ -607,13 +690,14 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
rc = crypto_shash_setkey(ses->server->secmech.hmacmd5,
ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
if (rc) {
- cERROR(1, "%s: Could not set NTLMV2 Hash as a key", __func__);
+ cifs_dbg(VFS, "%s: Could not set NTLMV2 Hash as a key\n",
+ __func__);
goto setup_ntlmv2_rsp_ret;
}
rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
if (rc) {
- cERROR(1, "%s: Could not init hmacmd5\n", __func__);
+ cifs_dbg(VFS, "%s: Could not init hmacmd5\n", __func__);
goto setup_ntlmv2_rsp_ret;
}
@@ -621,14 +705,14 @@ setup_ntlmv2_rsp(struct cifs_ses *ses, const struct nls_table *nls_cp)
ses->auth_key.response + CIFS_SESS_KEY_SIZE,
CIFS_HMAC_MD5_HASH_SIZE);
if (rc) {
- cERROR(1, "%s: Could not update with response\n", __func__);
+ cifs_dbg(VFS, "%s: Could not update with response\n", __func__);
goto setup_ntlmv2_rsp_ret;
}
rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
ses->auth_key.response);
if (rc)
- cERROR(1, "%s: Could not generate md5 hash\n", __func__);
+ cifs_dbg(VFS, "%s: Could not generate md5 hash\n", __func__);
setup_ntlmv2_rsp_ret:
kfree(tiblob);
@@ -650,7 +734,7 @@ calc_seckey(struct cifs_ses *ses)
tfm_arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm_arc4)) {
rc = PTR_ERR(tfm_arc4);
- cERROR(1, "could not allocate crypto API arc4\n");
+ cifs_dbg(VFS, "could not allocate crypto API arc4\n");
return rc;
}
@@ -659,7 +743,8 @@ calc_seckey(struct cifs_ses *ses)
rc = crypto_blkcipher_setkey(tfm_arc4, ses->auth_key.response,
CIFS_SESS_KEY_SIZE);
if (rc) {
- cERROR(1, "%s: Could not set response as a key", __func__);
+ cifs_dbg(VFS, "%s: Could not set response as a key\n",
+ __func__);
return rc;
}
@@ -668,7 +753,7 @@ calc_seckey(struct cifs_ses *ses)
rc = crypto_blkcipher_encrypt(&desc, &sgout, &sgin, CIFS_CPHTXT_SIZE);
if (rc) {
- cERROR(1, "could not encrypt session key rc: %d\n", rc);
+ cifs_dbg(VFS, "could not encrypt session key rc: %d\n", rc);
crypto_free_blkcipher(tfm_arc4);
return rc;
}
@@ -686,69 +771,32 @@ calc_seckey(struct cifs_ses *ses)
void
cifs_crypto_shash_release(struct TCP_Server_Info *server)
{
- if (server->secmech.md5)
- crypto_free_shash(server->secmech.md5);
-
- if (server->secmech.hmacmd5)
- crypto_free_shash(server->secmech.hmacmd5);
-
- kfree(server->secmech.sdeschmacmd5);
-
- kfree(server->secmech.sdescmd5);
-}
-
-int
-cifs_crypto_shash_allocate(struct TCP_Server_Info *server)
-{
- int rc;
- unsigned int size;
-
- server->secmech.hmacmd5 = crypto_alloc_shash("hmac(md5)", 0, 0);
- if (IS_ERR(server->secmech.hmacmd5)) {
- cERROR(1, "could not allocate crypto hmacmd5\n");
- return PTR_ERR(server->secmech.hmacmd5);
+ if (server->secmech.cmacaes) {
+ crypto_free_shash(server->secmech.cmacaes);
+ server->secmech.cmacaes = NULL;
}
- server->secmech.md5 = crypto_alloc_shash("md5", 0, 0);
- 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;
+ if (server->secmech.hmacsha256) {
+ crypto_free_shash(server->secmech.hmacsha256);
+ server->secmech.hmacsha256 = NULL;
}
- size = sizeof(struct shash_desc) +
- crypto_shash_descsize(server->secmech.hmacmd5);
- server->secmech.sdeschmacmd5 = kmalloc(size, GFP_KERNEL);
- if (!server->secmech.sdeschmacmd5) {
- cERROR(1, "cifs_crypto_shash_allocate: can't alloc hmacmd5\n");
- rc = -ENOMEM;
- goto crypto_allocate_hmacmd5_sdesc_fail;
+ if (server->secmech.md5) {
+ crypto_free_shash(server->secmech.md5);
+ server->secmech.md5 = NULL;
}
- server->secmech.sdeschmacmd5->shash.tfm = server->secmech.hmacmd5;
- server->secmech.sdeschmacmd5->shash.flags = 0x0;
-
- size = sizeof(struct shash_desc) +
- crypto_shash_descsize(server->secmech.md5);
- server->secmech.sdescmd5 = kmalloc(size, GFP_KERNEL);
- if (!server->secmech.sdescmd5) {
- cERROR(1, "cifs_crypto_shash_allocate: can't alloc md5\n");
- rc = -ENOMEM;
- goto crypto_allocate_md5_sdesc_fail;
+ if (server->secmech.hmacmd5) {
+ crypto_free_shash(server->secmech.hmacmd5);
+ server->secmech.hmacmd5 = NULL;
}
- server->secmech.sdescmd5->shash.tfm = server->secmech.md5;
- server->secmech.sdescmd5->shash.flags = 0x0;
- return 0;
-
-crypto_allocate_md5_sdesc_fail:
+ kfree(server->secmech.sdesccmacaes);
+ server->secmech.sdesccmacaes = NULL;
+ kfree(server->secmech.sdeschmacsha256);
+ server->secmech.sdeschmacsha256 = NULL;
kfree(server->secmech.sdeschmacmd5);
-
-crypto_allocate_hmacmd5_sdesc_fail:
- crypto_free_shash(server->secmech.md5);
-
-crypto_allocate_md5_fail:
- crypto_free_shash(server->secmech.hmacmd5);
-
- return rc;
+ server->secmech.sdeschmacmd5 = NULL;
+ kfree(server->secmech.sdescmd5);
+ server->secmech.sdescmd5 = NULL;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 12:34:07 +0000