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/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* 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
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#ifndef OPENSSL_NO_RC4
# include <openssl/evp.h>
# include <openssl/objects.h>
# include <openssl/rc4.h>
# include "crypto/evp.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 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
};
const EVP_CIPHER *EVP_rc4(void)
{
return &r4_cipher;
}
const EVP_CIPHER *EVP_rc4_40(void)
{
return &r4_40_cipher;
}
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 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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