-/* crypto/evp/e_rc4.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. 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:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * 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
- * 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
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * 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.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
-#ifndef NO_RC4
-
#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/evp.h>
-#include <openssl/objects.h>
+#include "internal/cryptlib.h"
+
+#ifndef OPENSSL_NO_RC4
+
+# include <openssl/evp.h>
+# include <openssl/objects.h>
+# include <openssl/rc4.h>
+
+# include "internal/evp_int.h"
+
+typedef struct {
+ RC4_KEY ks; /* working key */
+} EVP_RC4_KEY;
+
+# define data(ctx) ((EVP_RC4_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx))
-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);
-static EVP_CIPHER r4_cipher=
- {
- NID_rc4,
- 1,EVP_RC4_KEY_SIZE,0,
- EVP_CIPH_VARIABLE_LENGTH,
- rc4_init_key,
- rc4_cipher,
- NULL,
- sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
- sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc4)),
- NULL,
- NULL,
- NULL
- };
+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 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_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
- sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc4)),
- 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
+};
-EVP_CIPHER *EVP_rc4(void)
- {
- return(&r4_cipher);
- }
+const EVP_CIPHER *EVP_rc4(void)
+{
+ return &r4_cipher;
+}
-EVP_CIPHER *EVP_rc4_40(void)
- {
- return(&r4_40_cipher);
- }
+const EVP_CIPHER *EVP_rc4_40(void)
+{
+ return &r4_40_cipher;
+}
-static void rc4_init_key(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(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
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