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, 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_CIPHER_CTX *ctx = (PROV_CIPHER_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 (ivlen != TDES_IVLEN) {
43 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IVLEN);
46 memcpy(ctx->iv, iv, TDES_IVLEN);
50 if (keylen != ctx->keylen) {
51 ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
54 return ctx->hw->init(ctx, key, ctx->keylen);
59 int tdes_einit(void *vctx, const unsigned char *key, size_t keylen,
60 const unsigned char *iv, size_t ivlen)
62 return tdes_init(vctx, key, keylen, iv, ivlen, 1);
65 int tdes_dinit(void *vctx, const unsigned char *key, size_t keylen,
66 const unsigned char *iv, size_t ivlen)
68 return tdes_init(vctx, key, keylen, iv, ivlen, 0);
71 static int tdes_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
74 DES_cblock *deskey = ptr;
75 size_t kl = ctx->keylen;
77 if (kl == 0 || rand_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
79 DES_set_odd_parity(deskey);
81 DES_set_odd_parity(deskey + 1);
83 DES_set_odd_parity(deskey + 2);
89 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(tdes)
90 OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
91 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(tdes)
93 int tdes_get_ctx_params(void *vctx, OSSL_PARAM params[])
95 PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
98 if (!cipher_generic_get_ctx_params(vctx, params))
101 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
102 if (p != NULL && !tdes_generatekey(ctx, p->data)) {
103 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
110 * TODO(3.0) - ECB mode does not use an IV - but existing test code is setting
111 * an IV. Fixing this could potentially make applications break.
114 /* tdes_ede3_ecb_functions */
115 IMPLEMENT_tdes_cipher(ede3, EDE3, ecb, ECB, TDES_FLAGS, 64*3, 64, 64, block);
116 /* tdes_ede3_cbc_functions */
117 IMPLEMENT_tdes_cipher(ede3, EDE3, cbc, CBC, TDES_FLAGS, 64*3, 64, 64, block);