/* crypto/evp/e_rc4.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* 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_RC4
-
#include <stdio.h>
#include "cryptlib.h"
-#include "evp.h"
-#include "objects.h"
-#ifndef NOPROTO
-static void rc4_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv,int enc);
-static void rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl);
-#else
-static void rc4_init_key();
-static void rc4_cipher();
-#endif
+#ifndef OPENSSL_NO_RC4
+
+# include <openssl/evp.h>
+# include "evp_locl.h"
+# include <openssl/objects.h>
+# include <openssl/rc4.h>
+
+/* FIXME: surely this is available elsewhere? */
+# define EVP_RC4_KEY_SIZE 16
+
+typedef struct {
+ RC4_KEY ks; /* working key */
+} EVP_RC4_KEY;
+
+# define data(ctx) ((EVP_RC4_KEY *)(ctx)->cipher_data)
+
+static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl);
+static const EVP_CIPHER r4_cipher = {
+ NID_rc4,
+ 1, EVP_RC4_KEY_SIZE, 0,
+ EVP_CIPH_VARIABLE_LENGTH,
+ rc4_init_key,
+ rc4_cipher,
+ NULL,
+ sizeof(EVP_RC4_KEY),
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+static const EVP_CIPHER r4_40_cipher = {
+ NID_rc4_40,
+ 1, 5 /* 40 bit */ , 0,
+ EVP_CIPH_VARIABLE_LENGTH,
+ rc4_init_key,
+ rc4_cipher,
+ NULL,
+ sizeof(EVP_RC4_KEY),
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
-static EVP_CIPHER r4_cipher=
- {
- NID_rc4,
- 1,EVP_RC4_KEY_SIZE,0,
- rc4_init_key,
- rc4_cipher,
- };
+const EVP_CIPHER *EVP_rc4(void)
+{
+ return (&r4_cipher);
+}
-EVP_CIPHER *EVP_rc4()
- {
- return(&r4_cipher);
- }
+const EVP_CIPHER *EVP_rc4_40(void)
+{
+ return (&r4_40_cipher);
+}
-static void rc4_init_key(ctx,key,iv,enc)
-EVP_CIPHER_CTX *ctx;
-unsigned char *key;
-unsigned char *iv;
-int enc;
- {
- if (key != NULL)
- memcpy(&(ctx->c.rc4.key[0]),key,EVP_CIPHER_CTX_key_length(ctx));
- RC4_set_key(&(ctx->c.rc4.ks),EVP_CIPHER_CTX_key_length(ctx),
- ctx->c.rc4.key);
- }
+static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ RC4_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), key);
+ return 1;
+}
-static void rc4_cipher(ctx,out,in,inl)
-EVP_CIPHER_CTX *ctx;
-unsigned char *out;
-unsigned char *in;
-unsigned int inl;
- {
- RC4(&(ctx->c.rc4.ks),inl,in,out);
- }
+static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+{
+ RC4(&data(ctx)->ks, inl, in, out);
+ return 1;
+}
#endif
projects / openssl.git / blobdiff