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 "cipher_locl.h"
11 #include "internal/ciphers/cipher_tdes.h"
12 #include "internal/rand_int.h"
13 #include "internal/provider_algs.h"
14 #include "internal/providercommonerr.h"
16 void *tdes_newctx(void *provctx, int mode, size_t kbits, size_t blkbits,
17 size_t ivbits, const PROV_CIPHER_HW *hw)
19 PROV_TDES_CTX *tctx = OPENSSL_zalloc(sizeof(*tctx));
22 cipher_generic_initkey(tctx, kbits, blkbits, ivbits, mode, hw, provctx);
26 void tdes_freectx(void *vctx)
28 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
30 OPENSSL_clear_free(ctx, sizeof(*ctx));
33 static int tdes_init(void *vctx, const unsigned char *key, size_t keylen,
34 const unsigned char *iv, size_t ivlen, int enc)
36 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
41 if (ivlen != TDES_IVLEN) {
42 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IVLEN);
45 memcpy(ctx->iv, iv, TDES_IVLEN);
49 if (keylen != ctx->keylen) {
50 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
53 return ctx->hw->init(ctx, key, ctx->keylen);
58 int tdes_einit(void *vctx, const unsigned char *key, size_t keylen,
59 const unsigned char *iv, size_t ivlen)
61 return tdes_init(vctx, key, keylen, iv, ivlen, 1);
64 int tdes_dinit(void *vctx, const unsigned char *key, size_t keylen,
65 const unsigned char *iv, size_t ivlen)
67 return tdes_init(vctx, key, keylen, iv, ivlen, 0);
70 static int tdes_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
73 DES_cblock *deskey = ptr;
74 size_t kl = ctx->keylen;
76 if (kl == 0 || rand_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
78 DES_set_odd_parity(deskey);
80 DES_set_odd_parity(deskey + 1);
82 DES_set_odd_parity(deskey + 2);
88 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(tdes)
89 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
90 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(tdes)
92 int tdes_get_ctx_params(void *vctx, OSSL_PARAM params[])
94 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
97 if (!cipher_generic_get_ctx_params(vctx, params))
100 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
101 if (p != NULL && !tdes_generatekey(ctx, p->data)) {
102 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
109 * TODO(3.0) - ECB mode does not use an IV - but existing test code is setting
110 * an IV. Fixing this could potentially make applications break.
113 /* tdes_ede3_ecb_functions */
114 IMPLEMENT_tdes_cipher(ede3, EDE3, ecb, ECB, TDES_FLAGS, 64*3, 64, 64, block);
115 /* tdes_ede3_cbc_functions */
116 IMPLEMENT_tdes_cipher(ede3, EDE3, cbc, CBC, TDES_FLAGS, 64*3, 64, 64, block);