1/*
2 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#include <openssl/des.h>
11#include <openssl/core_numbers.h>
12
13#define DES_BLOCK_SIZE 8
14#define TDES_IVLEN 8
15
16/* TODO(3.0) Figure out what flags need to be here */
17#define TDES_FLAGS (EVP_CIPH_RAND_KEY)
18
19typedef struct prov_tdes_ctx_st {
20 PROV_CIPHER_CTX base; /* Must be first */
21 union {
22 OSSL_UNION_ALIGN;
23 DES_key_schedule ks[3];
24 } tks;
25 union {
26 void (*cbc) (const void *, void *, size_t,
27 const DES_key_schedule *, unsigned char *);
28 } tstream;
29
30} PROV_TDES_CTX;
31
32#define IMPLEMENT_tdes_cipher(type, UCTYPE, lcmode, UCMODE, flags, \
33 kbits, blkbits, ivbits, block) \
34static OSSL_OP_cipher_newctx_fn tdes_##type##_##lcmode##_newctx; \
35static void *tdes_##type##_##lcmode##_newctx(void *provctx) \
36{ \
37 return tdes_newctx(provctx, EVP_CIPH_##UCMODE##_MODE, kbits, blkbits, \
38 ivbits, flags, PROV_CIPHER_HW_tdes_##type##_##lcmode());\
39} \
40static OSSL_OP_cipher_get_params_fn tdes_##type##_##lcmode##_get_params; \
41static int tdes_##type##_##lcmode##_get_params(OSSL_PARAM params[]) \
42{ \
43 return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags, \
44 kbits, blkbits, ivbits); \
45} \
46const OSSL_DISPATCH tdes_##type##_##lcmode##_functions[] = { \
47 { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))tdes_einit }, \
48 { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))tdes_dinit }, \
49 { OSSL_FUNC_CIPHER_UPDATE, \
50 (void (*)(void))cipher_generic_##block##_update }, \
51 { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))cipher_generic_##block##_final },\
52 { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))cipher_generic_cipher }, \
53 { OSSL_FUNC_CIPHER_NEWCTX, \
54 (void (*)(void))tdes_##type##_##lcmode##_newctx }, \
55 { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))tdes_freectx }, \
56 { OSSL_FUNC_CIPHER_GET_PARAMS, \
57 (void (*)(void))tdes_##type##_##lcmode##_get_params }, \
58 { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
59 (void (*)(void))cipher_generic_gettable_params }, \
60 { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, (void (*)(void))tdes_get_ctx_params }, \
61 { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
62 (void (*)(void))tdes_gettable_ctx_params }, \
63 { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
64 (void (*)(void))cipher_generic_set_ctx_params }, \
65 { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
66 (void (*)(void))cipher_generic_settable_ctx_params }, \
67 { 0, NULL } \
68}
69
70void *tdes_newctx(void *provctx, int mode, size_t kbits, size_t blkbits,
71 size_t ivbits, uint64_t flags, const PROV_CIPHER_HW *hw);
72OSSL_OP_cipher_freectx_fn tdes_freectx;
73OSSL_OP_cipher_encrypt_init_fn tdes_einit;
74OSSL_OP_cipher_decrypt_init_fn tdes_dinit;
75OSSL_OP_cipher_get_ctx_params_fn tdes_get_ctx_params;
76OSSL_OP_cipher_gettable_ctx_params_fn tdes_gettable_ctx_params;
77
78#define PROV_CIPHER_HW_tdes_mode(type, mode) \
79static const PROV_CIPHER_HW type##_##mode = { \
80 cipher_hw_tdes_##type##_initkey, \
81 cipher_hw_tdes_##mode \
82}; \
83const PROV_CIPHER_HW *PROV_CIPHER_HW_tdes_##type##_##mode(void) \
84{ \
85 return &type##_##mode; \
86}
87
88int cipher_hw_tdes_ede3_initkey(PROV_CIPHER_CTX *ctx, const unsigned char *key,
89 size_t keylen);
90int cipher_hw_tdes_cbc(PROV_CIPHER_CTX *ctx, unsigned char *out,
91 const unsigned char *in, size_t inl);
92int cipher_hw_tdes_ecb(PROV_CIPHER_CTX *ctx, unsigned char *out,
93 const unsigned char *in, size_t len);
94
95const PROV_CIPHER_HW *PROV_CIPHER_HW_tdes_ede3_cbc(void);
96const PROV_CIPHER_HW *PROV_CIPHER_HW_tdes_ede3_ecb(void);
97