unsigned char *p24);
static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
- const struct session_key *key, char *signature)
+ struct TCP_Server_Info *server, char *signature)
{
- struct MD5Context context;
+ int rc;
- if ((cifs_pdu == NULL) || (signature == NULL) || (key == NULL))
+ if (cifs_pdu == NULL || signature == NULL || server == NULL)
return -EINVAL;
- cifs_MD5_init(&context);
- cifs_MD5_update(&context, (char *)&key->data, key->len);
- cifs_MD5_update(&context, cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
+ if (!server->secmech.sdescmd5) {
+ cERROR(1, "%s: Can't generate signature\n", __func__);
+ return -1;
+ }
+
+ rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
+ if (rc) {
+ cERROR(1, "%s: Oould not init md5\n", __func__);
+ return rc;
+ }
+
+ crypto_shash_update(&server->secmech.sdescmd5->shash,
+ server->session_key.response, server->session_key.len);
+
+ crypto_shash_update(&server->secmech.sdescmd5->shash,
+ cifs_pdu->Protocol, cifs_pdu->smb_buf_length);
+
+ rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
- cifs_MD5_final(signature, &context);
return 0;
}
server->sequence_number++;
spin_unlock(&GlobalMid_Lock);
- rc = cifs_calculate_signature(cifs_pdu, &server->session_key,
- smb_signature);
+ rc = cifs_calculate_signature(cifs_pdu, server, smb_signature);
if (rc)
memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
else
}
static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
- const struct session_key *key, char *signature)
+ struct TCP_Server_Info *server, char *signature)
{
- struct MD5Context context;
int i;
+ int rc;
- if ((iov == NULL) || (signature == NULL) || (key == NULL))
+ if (iov == NULL || signature == NULL || server == NULL)
return -EINVAL;
- cifs_MD5_init(&context);
- cifs_MD5_update(&context, (char *)&key->data, key->len);
+ if (!server->secmech.sdescmd5) {
+ cERROR(1, "%s: Can't generate signature\n", __func__);
+ return -1;
+ }
+
+ rc = crypto_shash_init(&server->secmech.sdescmd5->shash);
+ if (rc) {
+ cERROR(1, "%s: Oould not init md5\n", __func__);
+ return rc;
+ }
+
+ crypto_shash_update(&server->secmech.sdescmd5->shash,
+ server->session_key.response, server->session_key.len);
+
for (i = 0; i < n_vec; i++) {
if (iov[i].iov_len == 0)
continue;
if (i == 0) {
if (iov[0].iov_len <= 8) /* cmd field at offset 9 */
break; /* nothing to sign or corrupt header */
- cifs_MD5_update(&context, iov[0].iov_base+4,
- iov[0].iov_len-4);
+ crypto_shash_update(&server->secmech.sdescmd5->shash,
+ iov[i].iov_base + 4, iov[i].iov_len - 4);
} else
- cifs_MD5_update(&context, iov[i].iov_base, iov[i].iov_len);
+ crypto_shash_update(&server->secmech.sdescmd5->shash,
+ iov[i].iov_base, iov[i].iov_len);
}
- cifs_MD5_final(signature, &context);
+ rc = crypto_shash_final(&server->secmech.sdescmd5->shash, signature);
- return 0;
+ return rc;
}
-
int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info *server,
__u32 *pexpected_response_sequence_number)
{
server->sequence_number++;
spin_unlock(&GlobalMid_Lock);
- rc = cifs_calc_signature2(iov, n_vec, &server->session_key,
- smb_signature);
+ rc = cifs_calc_signature2(iov, n_vec, server, smb_signature);
if (rc)
memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
else
}
int cifs_verify_signature(struct smb_hdr *cifs_pdu,
- const struct session_key *session_key,
+ 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];
- if (cifs_pdu == NULL || session_key == NULL)
+ if (cifs_pdu == NULL || server == NULL)
return -EINVAL;
if (cifs_pdu->Command == SMB_COM_NEGOTIATE)
cpu_to_le32(expected_sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
- rc = cifs_calculate_signature(cifs_pdu, session_key,
+ rc = cifs_calculate_signature(cifs_pdu, server,
what_we_think_sig_should_be);
if (rc)
}
-/* We fill in key by putting in 40 byte array which was allocated by caller */
-int cifs_calculate_session_key(struct session_key *key, const char *rn,
- const char *password)
+/* first calculate 24 bytes ntlm response and then 16 byte session key */
+int setup_ntlm_response(struct cifsSesInfo *ses)
{
- char temp_key[16];
- if ((key == NULL) || (rn == NULL))
+ unsigned int temp_len = CIFS_SESS_KEY_SIZE + CIFS_AUTH_RESP_SIZE;
+ char temp_key[CIFS_SESS_KEY_SIZE];
+
+ if (!ses)
return -EINVAL;
- E_md4hash(password, temp_key);
- mdfour(key->data.ntlm, temp_key, 16);
- memcpy(key->data.ntlm+16, rn, CIFS_SESS_KEY_SIZE);
- key->len = 40;
+ 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);
+ return -ENOMEM;
+ }
+ ses->auth_key.len = temp_len;
+
+ SMBNTencrypt(ses->password, ses->server->cryptkey,
+ ses->auth_key.response + CIFS_SESS_KEY_SIZE);
+
+ E_md4hash(ses->password, temp_key);
+ mdfour(ses->auth_key.response, temp_key, CIFS_SESS_KEY_SIZE);
+
return 0;
}
* two times the unicode length of a server name +
* size of a timestamp (which is 8 bytes).
*/
- ses->tilen = size + 2 * (2 * dlen) + 2 * (2 * wlen) + 8;
- ses->tiblob = kzalloc(ses->tilen, GFP_KERNEL);
- if (!ses->tiblob) {
- ses->tilen = 0;
+ ses->auth_key.len = size + 2 * (2 * dlen) + 2 * (2 * wlen) + 8;
+ 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;
}
- blobptr = ses->tiblob;
+ blobptr = ses->auth_key.response;
attrptr = (struct ntlmssp2_name *) blobptr;
attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME);
* about target string i.e. for some, just user name might suffice.
*/
static int
-find_domain_name(struct cifsSesInfo *ses)
+find_domain_name(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
{
unsigned int attrsize;
unsigned int type;
unsigned char *blobend;
struct ntlmssp2_name *attrptr;
- if (!ses->tilen || !ses->tiblob)
+ if (!ses->auth_key.len || !ses->auth_key.response)
return 0;
- blobptr = ses->tiblob;
- blobend = ses->tiblob + ses->tilen;
+ blobptr = ses->auth_key.response;
+ blobend = blobptr + ses->auth_key.len;
while (blobptr + onesize < blobend) {
attrptr = (struct ntlmssp2_name *) blobptr;
if (!attrsize)
break;
if (!ses->domainName) {
- struct nls_table *default_nls;
ses->domainName =
kmalloc(attrsize + 1, GFP_KERNEL);
if (!ses->domainName)
return -ENOMEM;
- default_nls = load_nls_default();
cifs_from_ucs2(ses->domainName,
(__le16 *)blobptr, attrsize, attrsize,
- default_nls, false);
- unload_nls(default_nls);
+ nls_cp, false);
break;
}
}
return 0;
}
-static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
+static int calc_ntlmv2_hash(struct cifsSesInfo *ses, char *ntlmv2_hash,
const struct nls_table *nls_cp)
{
int rc = 0;
int len;
- char nt_hash[16];
- struct HMACMD5Context *pctxt;
+ char nt_hash[CIFS_NTHASH_SIZE];
wchar_t *user;
wchar_t *domain;
+ wchar_t *server;
- pctxt = kmalloc(sizeof(struct HMACMD5Context), GFP_KERNEL);
-
- if (pctxt == NULL)
- return -ENOMEM;
+ if (!ses->server->secmech.sdeschmacmd5) {
+ cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
+ return -1;
+ }
/* calculate md4 hash of password */
E_md4hash(ses->password, nt_hash);
- /* convert Domainname to unicode and uppercase */
- hmac_md5_init_limK_to_64(nt_hash, 16, pctxt);
+ crypto_shash_setkey(ses->server->secmech.hmacmd5, nt_hash,
+ CIFS_NTHASH_SIZE);
+
+ rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+ if (rc) {
+ cERROR(1, "calc_ntlmv2_hash: could not init 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)
+ if (user == NULL) {
+ cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
+ rc = -ENOMEM;
goto calc_exit_2;
+ }
len = cifs_strtoUCS((__le16 *)user, ses->userName, len, nls_cp);
UniStrupr(user);
- hmac_md5_update((char *)user, 2*len, pctxt);
+
+ crypto_shash_update(&ses->server->secmech.sdeschmacmd5->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)
+ if (domain == NULL) {
+ cERROR(1, "calc_ntlmv2_hash: domain mem alloc failure");
+ rc = -ENOMEM;
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
- with lower cased domain name that passed as an option.
- Maybe converting the domain name earlier makes sense */
- /* UniStrupr(domain); */
-
- hmac_md5_update((char *)domain, 2*len, pctxt);
-
+ crypto_shash_update(&ses->server->secmech.sdeschmacmd5->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;
+ goto calc_exit_1;
+ }
+ len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
+ nls_cp);
+ crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+ (char *)server, 2 * len);
+ kfree(server);
}
+
+ rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+ 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 */
- hmac_md5_final(ses->ntlmv2_hash, pctxt);
+ return rc;
+}
+
+static int
+CalcNTLMv2_response(const struct cifsSesInfo *ses, char *ntlmv2_hash)
+{
+ int rc;
+ unsigned int offset = CIFS_SESS_KEY_SIZE + 8;
+
+ if (!ses->server->secmech.sdeschmacmd5) {
+ cERROR(1, "calc_ntlmv2_hash: can't generate ntlmv2 hash\n");
+ return -1;
+ }
+
+ crypto_shash_setkey(ses->server->secmech.hmacmd5,
+ ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
+
+ rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+ if (rc) {
+ cERROR(1, "CalcNTLMv2_response: could not init hmacmd5");
+ return rc;
+ }
+
+ if (ses->server->secType == RawNTLMSSP)
+ memcpy(ses->auth_key.response + offset,
+ ses->ntlmssp->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
+ else
+ memcpy(ses->auth_key.response + offset,
+ ses->server->cryptkey, CIFS_SERVER_CHALLENGE_SIZE);
+ crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+ ses->auth_key.response + offset, ses->auth_key.len - offset);
+
+ rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+ ses->auth_key.response + CIFS_SESS_KEY_SIZE);
- kfree(pctxt);
return rc;
}
+
int
-setup_ntlmv2_rsp(struct cifsSesInfo *ses, char *resp_buf,
- const struct nls_table *nls_cp)
+setup_ntlmv2_rsp(struct cifsSesInfo *ses, const struct nls_table *nls_cp)
{
int rc;
- struct ntlmv2_resp *buf = (struct ntlmv2_resp *)resp_buf;
- struct HMACMD5Context context;
-
- buf->blob_signature = cpu_to_le32(0x00000101);
- buf->reserved = 0;
- buf->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
- get_random_bytes(&buf->client_chal, sizeof(buf->client_chal));
- buf->reserved2 = 0;
+ int baselen;
+ unsigned int tilen;
+ struct ntlmv2_resp *buf;
+ char ntlmv2_hash[16];
+ unsigned char *tiblob = NULL; /* target info blob */
if (ses->server->secType == RawNTLMSSP) {
if (!ses->domainName) {
- rc = find_domain_name(ses);
+ rc = find_domain_name(ses, nls_cp);
if (rc) {
cERROR(1, "error %d finding domain name", rc);
goto setup_ntlmv2_rsp_ret;
rc = build_avpair_blob(ses, nls_cp);
if (rc) {
cERROR(1, "error %d building av pair blob", rc);
- return rc;
+ goto setup_ntlmv2_rsp_ret;
}
}
- /* calculate buf->ntlmv2_hash */
- rc = calc_ntlmv2_hash(ses, nls_cp);
+ baselen = CIFS_SESS_KEY_SIZE + sizeof(struct ntlmv2_resp);
+ tilen = ses->auth_key.len;
+ tiblob = ses->auth_key.response;
+
+ ses->auth_key.response = kmalloc(baselen + tilen, GFP_KERNEL);
+ 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;
+
+ buf = (struct ntlmv2_resp *)
+ (ses->auth_key.response + CIFS_SESS_KEY_SIZE);
+ buf->blob_signature = cpu_to_le32(0x00000101);
+ buf->reserved = 0;
+ buf->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+ get_random_bytes(&buf->client_chal, sizeof(buf->client_chal));
+ buf->reserved2 = 0;
+
+ memcpy(ses->auth_key.response + baselen, tiblob, tilen);
+
+ /* calculate ntlmv2_hash */
+ rc = calc_ntlmv2_hash(ses, ntlmv2_hash, nls_cp);
if (rc) {
cERROR(1, "could not get v2 hash rc %d", rc);
goto setup_ntlmv2_rsp_ret;
}
- CalcNTLMv2_response(ses, resp_buf);
+
+ /* 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);
+ goto setup_ntlmv2_rsp_ret;
+ }
/* now calculate the session key for NTLMv2 */
- hmac_md5_init_limK_to_64(ses->ntlmv2_hash, 16, &context);
- hmac_md5_update(resp_buf, 16, &context);
- hmac_md5_final(ses->auth_key.data.ntlmv2.key, &context);
+ crypto_shash_setkey(ses->server->secmech.hmacmd5,
+ ntlmv2_hash, CIFS_HMAC_MD5_HASH_SIZE);
+
+ rc = crypto_shash_init(&ses->server->secmech.sdeschmacmd5->shash);
+ if (rc) {
+ cERROR(1, "%s: Could not init hmacmd5\n", __func__);
+ goto setup_ntlmv2_rsp_ret;
+ }
- memcpy(&ses->auth_key.data.ntlmv2.resp, resp_buf,
- sizeof(struct ntlmv2_resp));
- ses->auth_key.len = 16 + sizeof(struct ntlmv2_resp);
+ crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
+ ses->auth_key.response + CIFS_SESS_KEY_SIZE,
+ CIFS_HMAC_MD5_HASH_SIZE);
- return 0;
+ rc = crypto_shash_final(&ses->server->secmech.sdeschmacmd5->shash,
+ ses->auth_key.response);
setup_ntlmv2_rsp_ret:
- kfree(ses->tiblob);
- ses->tiblob = NULL;
- ses->tilen = 0;
+ kfree(tiblob);
return rc;
}
-void CalcNTLMv2_response(const struct cifsSesInfo *ses,
- char *v2_session_response)
+int
+calc_seckey(struct cifsSesInfo *ses)
{
- struct HMACMD5Context context;
- /* rest of v2 struct already generated */
- memcpy(v2_session_response + 8, ses->cryptKey, 8);
- hmac_md5_init_limK_to_64(ses->ntlmv2_hash, 16, &context);
+ int rc;
+ struct crypto_blkcipher *tfm_arc4;
+ struct scatterlist sgin, sgout;
+ struct blkcipher_desc desc;
+ unsigned char sec_key[CIFS_SESS_KEY_SIZE]; /* a nonce */
+
+ 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)) {
+ cERROR(1, "could not allocate crypto API arc4\n");
+ return PTR_ERR(tfm_arc4);
+ }
- hmac_md5_update(v2_session_response+8,
- sizeof(struct ntlmv2_resp) - 8, &context);
+ desc.tfm = tfm_arc4;
- if (ses->tilen)
- hmac_md5_update(ses->tiblob, ses->tilen, &context);
+ crypto_blkcipher_setkey(tfm_arc4, ses->auth_key.response,
+ CIFS_SESS_KEY_SIZE);
- hmac_md5_final(v2_session_response, &context);
-/* cifs_dump_mem("v2_sess_rsp: ", v2_session_response, 32); */
+ sg_init_one(&sgin, sec_key, CIFS_SESS_KEY_SIZE);
+ sg_init_one(&sgout, ses->ntlmssp->ciphertext, CIFS_CPHTXT_SIZE);
+
+ rc = crypto_blkcipher_encrypt(&desc, &sgout, &sgin, CIFS_CPHTXT_SIZE);
+ if (rc) {
+ cERROR(1, "could not encrypt session key rc: %d\n", rc);
+ crypto_free_blkcipher(tfm_arc4);
+ return rc;
+ }
+
+ /* make secondary_key/nonce as session key */
+ memcpy(ses->auth_key.response, sec_key, CIFS_SESS_KEY_SIZE);
+ /* and make len as that of session key only */
+ ses->auth_key.len = CIFS_SESS_KEY_SIZE;
+
+ crypto_free_blkcipher(tfm_arc4);
+
+ return 0;
+}
+
+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 (!server->secmech.hmacmd5 ||
+ 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)) {
+ cERROR(1, "could not allocate crypto md5\n");
+ rc = PTR_ERR(server->secmech.md5);
+ goto crypto_allocate_md5_fail;
+ }
+
+ 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;
+ }
+ 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;
+ }
+ server->secmech.sdescmd5->shash.tfm = server->secmech.md5;
+ server->secmech.sdescmd5->shash.flags = 0x0;
+
+ return 0;
+
+crypto_allocate_md5_sdesc_fail:
+ 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;
}
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff