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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
|
|
