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abfc73f374
DES implementations were missing the dup/copy ctx routines required by CMAC implementation. A regression test is added. Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11498)
80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
/*
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* Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* DES low level APIs are deprecated for public use, but still ok for internal
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* use.
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*/
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#include "internal/deprecated.h"
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#include <openssl/des.h>
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#include "cipher_tdes_default.h"
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/*
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* Note the PROV_TDES_CTX has been used for the DESX cipher, just to reduce
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* code size.
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*/
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#define ks1 tks.ks[0]
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#define ks2 tks.ks[1].ks[0].cblock
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#define ks3 tks.ks[2].ks[0].cblock
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static int cipher_hw_desx_cbc_initkey(PROV_CIPHER_CTX *ctx,
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const unsigned char *key, size_t keylen)
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{
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PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
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DES_cblock *deskey = (DES_cblock *)key;
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DES_set_key_unchecked(deskey, &tctx->ks1);
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memcpy(&tctx->ks2, &key[8], 8);
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memcpy(&tctx->ks3, &key[16], 8);
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return 1;
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}
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static void cipher_hw_desx_copyctx(PROV_CIPHER_CTX *dst,
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const PROV_CIPHER_CTX *src)
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{
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PROV_TDES_CTX *sctx = (PROV_TDES_CTX *)src;
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PROV_TDES_CTX *dctx = (PROV_TDES_CTX *)dst;
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*dctx = *sctx;
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dst->ks = &dctx->tks.ks;
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}
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static int cipher_hw_desx_cbc(PROV_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
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while (inl >= MAXCHUNK) {
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DES_xcbc_encrypt(in, out, (long)MAXCHUNK, &tctx->ks1,
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(DES_cblock *)ctx->iv, &tctx->ks2, &tctx->ks3,
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ctx->enc);
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inl -= MAXCHUNK;
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in += MAXCHUNK;
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out += MAXCHUNK;
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}
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if (inl > 0)
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DES_xcbc_encrypt(in, out, (long)inl, &tctx->ks1,
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(DES_cblock *)ctx->iv, &tctx->ks2, &tctx->ks3,
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ctx->enc);
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return 1;
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}
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static const PROV_CIPHER_HW desx_cbc =
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{
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cipher_hw_desx_cbc_initkey,
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cipher_hw_desx_cbc,
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cipher_hw_desx_copyctx
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};
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const PROV_CIPHER_HW *PROV_CIPHER_HW_tdes_desx_cbc(void)
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{
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return &desx_cbc;
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}
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