42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
// Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <assert.h>
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#include <string.h>
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#include <openssl/cipher.h>
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#include <openssl/nid.h>
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#include <openssl/rc4.h>
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#include "../fipsmodule/cipher/internal.h"
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static int rc4_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
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const uint8_t *iv, int enc) {
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RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
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RC4_set_key(rc4key, EVP_CIPHER_CTX_key_length(ctx), key);
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return 1;
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}
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static int rc4_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
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size_t in_len) {
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RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
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RC4(rc4key, in_len, in, out);
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return 1;
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}
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static const EVP_CIPHER rc4 = {
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.nid = NID_rc4,
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.block_size = 1,
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.key_len = 16,
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.iv_len = 0,
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.ctx_size = sizeof(RC4_KEY),
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.flags = EVP_CIPH_VARIABLE_LENGTH,
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.init = rc4_init_key,
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.cipher = rc4_cipher,
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};
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const EVP_CIPHER *EVP_rc4(void) { return &rc4; }
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