* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
- *
+ *
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
+ *
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
+ * 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
+ *
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- *
+ *
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
#include "ssl_locl.h"
#ifndef OPENSSL_NO_SSL2
-#include <stdio.h>
+# include <stdio.h>
int ssl2_enc_init(SSL *s, int client)
- {
- /* Max number of bytes needed */
- EVP_CIPHER_CTX *rs,*ws;
- const EVP_CIPHER *c;
- const EVP_MD *md;
- int num;
-
- if (!ssl_cipher_get_evp(s->session,&c,&md,NULL))
- {
- ssl2_return_error(s,SSL2_PE_NO_CIPHER);
- SSLerr(SSL_F_SSL2_ENC_INIT,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
- return(0);
- }
-
- s->read_hash=md;
- s->write_hash=md;
-
- if ((s->enc_read_ctx == NULL) &&
- ((s->enc_read_ctx=(EVP_CIPHER_CTX *)
- OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
- goto err;
- if ((s->enc_write_ctx == NULL) &&
- ((s->enc_write_ctx=(EVP_CIPHER_CTX *)
- OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
- goto err;
-
- rs= s->enc_read_ctx;
- ws= s->enc_write_ctx;
-
- EVP_CIPHER_CTX_init(rs);
- EVP_CIPHER_CTX_init(ws);
-
- num=c->key_len;
- s->s2->key_material_length=num*2;
- OPENSSL_assert(s->s2->key_material_length <= sizeof s->s2->key_material);
-
- if (ssl2_generate_key_material(s) <= 0)
- return 0;
-
- OPENSSL_assert(c->iv_len <= (int)sizeof(s->session->key_arg));
- EVP_EncryptInit_ex(ws,c,NULL,&(s->s2->key_material[(client)?num:0]),
- s->session->key_arg);
- EVP_DecryptInit_ex(rs,c,NULL,&(s->s2->key_material[(client)?0:num]),
- s->session->key_arg);
- s->s2->read_key= &(s->s2->key_material[(client)?0:num]);
- s->s2->write_key= &(s->s2->key_material[(client)?num:0]);
- return(1);
-err:
- SSLerr(SSL_F_SSL2_ENC_INIT,ERR_R_MALLOC_FAILURE);
- return(0);
- }
-
-/* read/writes from s->s2->mac_data using length for encrypt and
- * decrypt. It sets s->s2->padding and s->[rw]length
- * if we are encrypting */
-void ssl2_enc(SSL *s, int send)
- {
- EVP_CIPHER_CTX *ds;
- unsigned long l;
- int bs;
-
- if (send)
- {
- ds=s->enc_write_ctx;
- l=s->s2->wlength;
- }
- else
- {
- ds=s->enc_read_ctx;
- l=s->s2->rlength;
- }
-
- /* check for NULL cipher */
- if (ds == NULL) return;
-
-
- bs=ds->cipher->block_size;
- /* This should be using (bs-1) and bs instead of 7 and 8, but
- * what the hell. */
- if (bs == 8)
- l=(l+7)/8*8;
-
- EVP_Cipher(ds,s->s2->mac_data,s->s2->mac_data,l);
- }
+{
+ /* Max number of bytes needed */
+ EVP_CIPHER_CTX *rs, *ws;
+ const EVP_CIPHER *c;
+ const EVP_MD *md;
+ int num;
+
+ if (!ssl_cipher_get_evp(s->session, &c, &md, NULL, NULL, NULL)) {
+ ssl2_return_error(s, SSL2_PE_NO_CIPHER);
+ SSLerr(SSL_F_SSL2_ENC_INIT, SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
+ return (0);
+ }
+ ssl_replace_hash(&s->read_hash, md);
+ ssl_replace_hash(&s->write_hash, md);
+
+ if ((s->enc_read_ctx == NULL) && ((s->enc_read_ctx = (EVP_CIPHER_CTX *)
+ OPENSSL_malloc(sizeof(EVP_CIPHER_CTX)))
+ == NULL))
+ goto err;
+
+ /*
+ * make sure it's intialized in case the malloc for enc_write_ctx fails
+ * and we exit with an error
+ */
+ rs = s->enc_read_ctx;
+ EVP_CIPHER_CTX_init(rs);
+
+ if ((s->enc_write_ctx == NULL) && ((s->enc_write_ctx = (EVP_CIPHER_CTX *)
+ OPENSSL_malloc(sizeof
+ (EVP_CIPHER_CTX))) ==
+ NULL))
+ goto err;
+
+ ws = s->enc_write_ctx;
+ EVP_CIPHER_CTX_init(ws);
+
+ num = c->key_len;
+ s->s2->key_material_length = num * 2;
+ OPENSSL_assert(s->s2->key_material_length <= sizeof s->s2->key_material);
+
+ if (ssl2_generate_key_material(s) <= 0)
+ return 0;
+
+ OPENSSL_assert(c->iv_len <= (int)sizeof(s->session->key_arg));
+ EVP_EncryptInit_ex(ws, c, NULL,
+ &(s->s2->key_material[(client) ? num : 0]),
+ s->session->key_arg);
+ EVP_DecryptInit_ex(rs, c, NULL,
+ &(s->s2->key_material[(client) ? 0 : num]),
+ s->session->key_arg);
+ s->s2->read_key = &(s->s2->key_material[(client) ? 0 : num]);
+ s->s2->write_key = &(s->s2->key_material[(client) ? num : 0]);
+ return (1);
+ err:
+ SSLerr(SSL_F_SSL2_ENC_INIT, ERR_R_MALLOC_FAILURE);
+ return (0);
+}
+
+/*
+ * read/writes from s->s2->mac_data using length for encrypt and decrypt.
+ * It sets s->s2->padding and s->[rw]length if we are encrypting Returns 0 on
+ * error and 1 on success
+ */
+int ssl2_enc(SSL *s, int send)
+{
+ EVP_CIPHER_CTX *ds;
+ unsigned long l;
+ int bs;
+
+ if (send) {
+ ds = s->enc_write_ctx;
+ l = s->s2->wlength;
+ } else {
+ ds = s->enc_read_ctx;
+ l = s->s2->rlength;
+ }
+
+ /* check for NULL cipher */
+ if (ds == NULL)
+ return 1;
+
+ bs = ds->cipher->block_size;
+ /*
+ * This should be using (bs-1) and bs instead of 7 and 8, but what the
+ * hell.
+ */
+ if (bs == 8)
+ l = (l + 7) / 8 * 8;
+
+ if (EVP_Cipher(ds, s->s2->mac_data, s->s2->mac_data, l) < 1)
+ return 0;
+
+ return 1;
+}
void ssl2_mac(SSL *s, unsigned char *md, int send)
- {
- EVP_MD_CTX c;
- unsigned char sequence[4],*p,*sec,*act;
- unsigned long seq;
- unsigned int len;
-
- if (send)
- {
- seq=s->s2->write_sequence;
- sec=s->s2->write_key;
- len=s->s2->wact_data_length;
- act=s->s2->wact_data;
- }
- else
- {
- seq=s->s2->read_sequence;
- sec=s->s2->read_key;
- len=s->s2->ract_data_length;
- act=s->s2->ract_data;
- }
-
- p= &(sequence[0]);
- l2n(seq,p);
-
- /* There has to be a MAC algorithm. */
- EVP_MD_CTX_init(&c);
- EVP_DigestInit_ex(&c, s->read_hash, NULL);
- EVP_DigestUpdate(&c,sec,
- EVP_CIPHER_CTX_key_length(s->enc_read_ctx));
- EVP_DigestUpdate(&c,act,len);
- /* the above line also does the pad data */
- EVP_DigestUpdate(&c,sequence,4);
- EVP_DigestFinal_ex(&c,md,NULL);
- EVP_MD_CTX_cleanup(&c);
- }
-#else /* !OPENSSL_NO_SSL2 */
+{
+ EVP_MD_CTX c;
+ unsigned char sequence[4], *p, *sec, *act;
+ unsigned long seq;
+ unsigned int len;
+
+ if (send) {
+ seq = s->s2->write_sequence;
+ sec = s->s2->write_key;
+ len = s->s2->wact_data_length;
+ act = s->s2->wact_data;
+ } else {
+ seq = s->s2->read_sequence;
+ sec = s->s2->read_key;
+ len = s->s2->ract_data_length;
+ act = s->s2->ract_data;
+ }
+
+ p = &(sequence[0]);
+ l2n(seq, p);
+
+ /* There has to be a MAC algorithm. */
+ EVP_MD_CTX_init(&c);
+ EVP_MD_CTX_copy(&c, s->read_hash);
+ EVP_DigestUpdate(&c, sec, EVP_CIPHER_CTX_key_length(s->enc_read_ctx));
+ EVP_DigestUpdate(&c, act, len);
+ /* the above line also does the pad data */
+ EVP_DigestUpdate(&c, sequence, 4);
+ EVP_DigestFinal_ex(&c, md, NULL);
+ EVP_MD_CTX_cleanup(&c);
+}
+#else /* !OPENSSL_NO_SSL2 */
# if PEDANTIC
-static void *dummy=&dummy;
+static void *dummy = &dummy;
# endif
#endif
projects / openssl.git / blobdiff