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/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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
*/
/*
* DES low level APIs are deprecated for public use, but still ok for internal
* use.
*/
#include "internal/deprecated.h"
#include "cipher_tdes_default.h"
#define ks1 tks.ks[0]
#define ks2 tks.ks[1]
#define ks3 tks.ks[2]
static int ossl_cipher_hw_tdes_ede2_initkey(PROV_CIPHER_CTX *ctx,
const unsigned char *key,
size_t keylen)
{
PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
DES_cblock *deskey = (DES_cblock *)key;
tctx->tstream.cbc = NULL;
# if defined(SPARC_DES_CAPABLE)
if (SPARC_DES_CAPABLE) {
if (ctx->mode == EVP_CIPH_CBC_MODE) {
des_t4_key_expand(&deskey[0], &tctx->ks1);
des_t4_key_expand(&deskey[1], &tctx->ks2);
memcpy(&tctx->ks3, &tctx->ks1, sizeof(tctx->ks1));
tctx->tstream.cbc = ctx->enc ? des_t4_ede3_cbc_encrypt :
des_t4_ede3_cbc_decrypt;
return 1;
}
}
# endif
DES_set_key_unchecked(&deskey[0], &tctx->ks1);
DES_set_key_unchecked(&deskey[1], &tctx->ks2);
memcpy(&tctx->ks3, &tctx->ks1, sizeof(tctx->ks1));
return 1;
}
static int ossl_cipher_hw_tdes_ofb(PROV_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
int num = ctx->num;
while (inl >= MAXCHUNK) {
DES_ede3_ofb64_encrypt(in, out, (long)MAXCHUNK, &tctx->ks1, &tctx->ks2,
&tctx->ks3, (DES_cblock *)ctx->iv, &num);
inl -= MAXCHUNK;
in += MAXCHUNK;
out += MAXCHUNK;
}
if (inl > 0) {
DES_ede3_ofb64_encrypt(in, out, (long)inl, &tctx->ks1, &tctx->ks2,
&tctx->ks3, (DES_cblock *)ctx->iv, &num);
}
ctx->num = num;
return 1;
}
static int ossl_cipher_hw_tdes_cfb(PROV_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
int num = ctx->num;
while (inl >= MAXCHUNK) {
DES_ede3_cfb64_encrypt(in, out, (long)MAXCHUNK,
&tctx->ks1, &tctx->ks2, &tctx->ks3,
(DES_cblock *)ctx->iv, &num, ctx->enc);
inl -= MAXCHUNK;
in += MAXCHUNK;
out += MAXCHUNK;
}
if (inl > 0) {
DES_ede3_cfb64_encrypt(in, out, (long)inl,
&tctx->ks1, &tctx->ks2, &tctx->ks3,
(DES_cblock *)ctx->iv, &num, ctx->enc);
}
ctx->num = num;
return 1;
}
/*
* Although we have a CFB-r implementation for 3-DES, it doesn't pack the
* right way, so wrap it here
*/
static int ossl_cipher_hw_tdes_cfb1(PROV_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
size_t n;
unsigned char c[1], d[1];
if (ctx->use_bits == 0)
inl *= 8;
for (n = 0; n < inl; ++n) {
c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
DES_ede3_cfb_encrypt(c, d, 1, 1,
&tctx->ks1, &tctx->ks2, &tctx->ks3,
(DES_cblock *)ctx->iv, ctx->enc);
out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
| ((d[0] & 0x80) >> (unsigned int)(n % 8));
}
return 1;
}
static int ossl_cipher_hw_tdes_cfb8(PROV_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
while (inl >= MAXCHUNK) {
DES_ede3_cfb_encrypt(in, out, 8, (long)MAXCHUNK,
&tctx->ks1, &tctx->ks2, &tctx->ks3,
(DES_cblock *)ctx->iv, ctx->enc);
inl -= MAXCHUNK;
in += MAXCHUNK;
out += MAXCHUNK;
}
if (inl > 0)
DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
&tctx->ks1, &tctx->ks2, &tctx->ks3,
(DES_cblock *)ctx->iv, ctx->enc);
return 1;
}
PROV_CIPHER_HW_tdes_mode(ede3, ofb)
PROV_CIPHER_HW_tdes_mode(ede3, cfb)
PROV_CIPHER_HW_tdes_mode(ede3, cfb1)
PROV_CIPHER_HW_tdes_mode(ede3, cfb8)
PROV_CIPHER_HW_tdes_mode(ede2, ecb)
PROV_CIPHER_HW_tdes_mode(ede2, cbc)
PROV_CIPHER_HW_tdes_mode(ede2, ofb)
PROV_CIPHER_HW_tdes_mode(ede2, cfb)
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