diff options
Diffstat (limited to 'providers/default/ciphers/cipher_desx_hw.c')
-rw-r--r-- | providers/default/ciphers/cipher_desx_hw.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/providers/default/ciphers/cipher_desx_hw.c b/providers/default/ciphers/cipher_desx_hw.c new file mode 100644 index 0000000000..ef1b3b0694 --- /dev/null +++ b/providers/default/ciphers/cipher_desx_hw.c @@ -0,0 +1,62 @@ +/* + * Copyright 1995-2019 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 + */ + +#include <openssl/des.h> +#include "cipher_tdes_default.h" + +/* + * Note the PROV_TDES_CTX has been used for the DESX cipher, just to reduce + * code size. + */ +#define ks1 tks.ks[0] +#define ks2 tks.ks[1].ks[0].cblock +#define ks3 tks.ks[2].ks[0].cblock + +static int cipher_hw_desx_cbc_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; + + DES_set_key_unchecked(deskey, &tctx->ks1); + memcpy(&tctx->ks2, &key[8], 8); + memcpy(&tctx->ks3, &key[16], 8); + + return 1; +} + +static int cipher_hw_desx_cbc(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_xcbc_encrypt(in, out, (long)MAXCHUNK, &tctx->ks1, + (DES_cblock *)ctx->iv, &tctx->ks2, &tctx->ks3, + ctx->enc); + inl -= MAXCHUNK; + in += MAXCHUNK; + out += MAXCHUNK; + } + if (inl > 0) + DES_xcbc_encrypt(in, out, (long)inl, &tctx->ks1, + (DES_cblock *)ctx->iv, &tctx->ks2, &tctx->ks3, + ctx->enc); + return 1; +} + +static const PROV_CIPHER_HW desx_cbc = +{ + cipher_hw_desx_cbc_initkey, + cipher_hw_desx_cbc +}; +const PROV_CIPHER_HW *PROV_CIPHER_HW_tdes_desx_cbc(void) +{ + return &desx_cbc; +} |