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_local.h"
11 #include "internal/ciphers/cipher_tdes.h"
12 #include "crypto/rand.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
);