2 * Copyright 2019 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
10 #include "prov/ciphercommon.h"
11 #include "cipher_tdes.h"
12 #include "crypto/rand.h"
13 #include "prov/implementations.h"
14 #include "prov/providercommonerr.h"
16 void *tdes_newctx(void *provctx, int mode, size_t kbits, size_t blkbits,
17 size_t ivbits, uint64_t flags, const PROV_CIPHER_HW *hw)
19 PROV_TDES_CTX *tctx = OPENSSL_zalloc(sizeof(*tctx));
22 cipher_generic_initkey(tctx, kbits, blkbits, ivbits, mode, flags, hw,
27 void tdes_freectx(void *vctx)
29 PROV_TDES_CTX *ctx = (PROV_TDES_CTX *)vctx;
31 OPENSSL_clear_free(ctx, sizeof(*ctx));
34 static int tdes_init(void *vctx, const unsigned char *key, size_t keylen,
35 const unsigned char *iv, size_t ivlen, int enc)
37 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
42 if (!cipher_generic_initiv(ctx, iv, ivlen))
47 if (keylen != ctx->keylen) {
48 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
51 return ctx->hw->init(ctx, key, ctx->keylen);
56 int tdes_einit(void *vctx, const unsigned char *key, size_t keylen,
57 const unsigned char *iv, size_t ivlen)
59 return tdes_init(vctx, key, keylen, iv, ivlen, 1);
62 int tdes_dinit(void *vctx, const unsigned char *key, size_t keylen,
63 const unsigned char *iv, size_t ivlen)
65 return tdes_init(vctx, key, keylen, iv, ivlen, 0);
68 static int tdes_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
71 DES_cblock *deskey = ptr;
72 size_t kl = ctx->keylen;
74 if (kl == 0 || rand_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
76 DES_set_odd_parity(deskey);
78 DES_set_odd_parity(deskey + 1);
80 DES_set_odd_parity(deskey + 2);
86 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(tdes)
87 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
88 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(tdes)
90 int tdes_get_ctx_params(void *vctx, OSSL_PARAM params[])
92 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
95 if (!cipher_generic_get_ctx_params(vctx, params))
98 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
99 if (p != NULL && !tdes_generatekey(ctx, p->data)) {
100 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
107 * TODO(3.0) - ECB mode does not use an IV - but existing test code is setting
108 * an IV. Fixing this could potentially make applications break.
111 /* tdes_ede3_ecb_functions */
112 IMPLEMENT_tdes_cipher(ede3, EDE3, ecb, ECB, TDES_FLAGS, 64*3, 64, 64, block);
113 /* tdes_ede3_cbc_functions */
114 IMPLEMENT_tdes_cipher(ede3, EDE3, cbc, CBC, TDES_FLAGS, 64*3, 64, 64, block);