* 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
* [including the GNU Public Licence.]
*/
-#ifndef NO_RC5
-
#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/evp.h>
-#include <openssl/objects.h>
-#include "evp_locl.h"
+#include "internal/cryptlib.h"
-static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv,int enc);
+#ifndef OPENSSL_NO_RC5
-IMPLEMENT_BLOCK_CIPHER(rc5_32_12_16, rc5.ks, RC5_32, rc5, NID_rc5,
- 8, EVP_RC5_32_12_16_KEY_SIZE, 8,
- 0, r_32_12_16_init_key, NULL,
- NULL, NULL, NULL)
+# include <openssl/evp.h>
+# include <openssl/objects.h>
+# include "evp_locl.h"
+# include <openssl/rc5.h>
-#if 0
-static int r_32_12_16_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl);
-static EVP_CIPHER rc5_32_12_16_cbc_cipher=
- {
- NID_rc5_cbc,
- 8,EVP_RC5_32_12_16_KEY_SIZE,8,
- EVP_CIPH_CBC_MODE,
- r_32_12_16_cbc_init_key,
- r_32_12_16_cbc_cipher,
- NULL,
- sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
- sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc5)),
- NULL,
- NULL,
- NULL
- };
+static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
-EVP_CIPHER *EVP_rc5_32_12_16_cbc(void)
- {
- return(&rc5_32_12_16_cbc_cipher);
- }
-#endif
-
-static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv, int enc)
- {
- RC5_32_set_key(&(ctx->c.rc5.ks),EVP_RC5_32_12_16_KEY_SIZE,
- key,RC5_12_ROUNDS);
- return 1;
- }
-#if 0
-static int r_32_12_16_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl)
- {
- RC5_32_cbc_encrypt(
- in,out,(long)inl,
- &(ctx->c.rc5.ks),&(ctx->iv[0]),
- ctx->encrypt);
- return 1;
- }
-#endif
+typedef struct {
+ int rounds; /* number of rounds */
+ RC5_32_KEY ks; /* key schedule */
+} EVP_RC5_KEY;
+
+# define data(ctx) EVP_C_DATA(EVP_RC5_KEY,ctx)
+
+IMPLEMENT_BLOCK_CIPHER(rc5_32_12_16, ks, RC5_32, EVP_RC5_KEY, NID_rc5,
+ 8, RC5_32_KEY_LENGTH, 8, 64,
+ EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT,
+ r_32_12_16_init_key, NULL, NULL, NULL, rc5_ctrl)
+
+static int rc5_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ switch (type) {
+ case EVP_CTRL_INIT:
+ data(c)->rounds = RC5_12_ROUNDS;
+ return 1;
+
+ case EVP_CTRL_GET_RC5_ROUNDS:
+ *(int *)ptr = data(c)->rounds;
+ return 1;
+
+ case EVP_CTRL_SET_RC5_ROUNDS:
+ switch (arg) {
+ case RC5_8_ROUNDS:
+ case RC5_12_ROUNDS:
+ case RC5_16_ROUNDS:
+ data(c)->rounds = arg;
+ return 1;
+
+ default:
+ EVPerr(EVP_F_RC5_CTRL, EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS);
+ return 0;
+ }
+
+ default:
+ return -1;
+ }
+}
+
+static int r_32_12_16_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ RC5_32_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
+ key, data(ctx)->rounds);
+ return 1;
+}
#endif
projects / oweals / openssl.git / blobdiff