2 * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 * DES low level APIs are deprecated for public use, but still ok for internal
14 #include "internal/deprecated.h"
16 #include "prov/ciphercommon.h"
17 #include "cipher_tdes.h"
18 #include <openssl/rand.h>
19 #include "prov/implementations.h"
20 #include "prov/providercommonerr.h"
22 void *tdes_newctx(void *provctx, int mode, size_t kbits, size_t blkbits,
23 size_t ivbits, uint64_t flags, const PROV_CIPHER_HW *hw)
25 PROV_TDES_CTX *tctx = OPENSSL_zalloc(sizeof(*tctx));
28 cipher_generic_initkey(tctx, kbits, blkbits, ivbits, mode, flags, hw,
33 void *tdes_dupctx(void *ctx)
35 PROV_TDES_CTX *in = (PROV_TDES_CTX *)ctx;
36 PROV_TDES_CTX *ret = OPENSSL_malloc(sizeof(*ret));
39 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
42 in->base.hw->copyctx(&ret->base, &in->base);
47 void tdes_freectx(void *vctx)
49 PROV_TDES_CTX *ctx = (PROV_TDES_CTX *)vctx;
51 cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
52 OPENSSL_clear_free(ctx, sizeof(*ctx));
55 static int tdes_init(void *vctx, const unsigned char *key, size_t keylen,
56 const unsigned char *iv, size_t ivlen, int enc)
58 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
65 if (!cipher_generic_initiv(ctx, iv, ivlen))
70 if (keylen != ctx->keylen) {
71 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
74 return ctx->hw->init(ctx, key, ctx->keylen);
79 int tdes_einit(void *vctx, const unsigned char *key, size_t keylen,
80 const unsigned char *iv, size_t ivlen)
82 return tdes_init(vctx, key, keylen, iv, ivlen, 1);
85 int tdes_dinit(void *vctx, const unsigned char *key, size_t keylen,
86 const unsigned char *iv, size_t ivlen)
88 return tdes_init(vctx, key, keylen, iv, ivlen, 0);
91 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(tdes)
92 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
93 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(tdes)
95 static int tdes_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
98 DES_cblock *deskey = ptr;
99 size_t kl = ctx->keylen;
101 if (kl == 0 || RAND_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
103 DES_set_odd_parity(deskey);
105 DES_set_odd_parity(deskey + 1);
107 DES_set_odd_parity(deskey + 2);
113 int tdes_get_ctx_params(void *vctx, OSSL_PARAM params[])
115 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
118 if (!cipher_generic_get_ctx_params(vctx, params))
121 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
122 if (p != NULL && !tdes_generatekey(ctx, p->data)) {
123 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);