38 lines
844 B
C
38 lines
844 B
C
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// 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 <openssl/cipher.h>
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#include <string.h>
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#include <openssl/nid.h>
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#include "../fipsmodule/cipher/internal.h"
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#include "../internal.h"
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static int null_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
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const uint8_t *iv, int enc) {
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return 1;
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}
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static int null_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
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const uint8_t *in, size_t in_len) {
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if (in != out) {
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OPENSSL_memcpy(out, in, in_len);
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}
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return 1;
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}
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static const EVP_CIPHER n_cipher = {
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.nid = NID_undef,
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.block_size = 1,
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.key_len = 0,
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.iv_len = 0,
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.ctx_size = 0,
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.init = null_init_key,
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.cipher = null_cipher,
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};
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const EVP_CIPHER *EVP_enc_null(void) { return &n_cipher; }
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