2 * Copyright 2019-2020 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 /* Dispatch functions for RC5 cipher modes ecb, cbc, ofb, cfb */
13 * RC5 low level APIs are deprecated for public use, but still ok for internal
16 #include "internal/deprecated.h"
18 #include "cipher_rc5.h"
19 #include "prov/implementations.h"
20 #include "prov/providercommon.h"
21 #include "prov/providercommonerr.h"
23 static OSSL_FUNC_cipher_freectx_fn rc5_freectx;
24 static OSSL_FUNC_cipher_dupctx_fn rc5_dupctx;
25 OSSL_FUNC_cipher_gettable_ctx_params_fn rc5_gettable_ctx_params;
26 OSSL_FUNC_cipher_settable_ctx_params_fn rc5_settable_ctx_params;
28 static void rc5_freectx(void *vctx)
30 PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx;
32 cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
33 OPENSSL_clear_free(ctx, sizeof(*ctx));
36 static void *rc5_dupctx(void *ctx)
38 PROV_RC5_CTX *in = (PROV_RC5_CTX *)ctx;
41 if (!ossl_prov_is_running())
44 ret = OPENSSL_malloc(sizeof(*ret));
46 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
54 static int rc5_set_ctx_params(void *vctx, const OSSL_PARAM params[])
56 PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx;
59 if (!cipher_var_keylen_set_ctx_params(vctx, params))
62 p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_ROUNDS);
66 if (!OSSL_PARAM_get_uint(p, &rounds)) {
67 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
70 if (rounds != RC5_8_ROUNDS
71 && rounds != RC5_12_ROUNDS
72 && rounds != RC5_16_ROUNDS) {
73 ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_NUMBER_OF_ROUNDS);
81 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(rc5)
82 OSSL_PARAM_uint(OSSL_CIPHER_PARAM_ROUNDS, NULL),
83 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(rc5)
85 CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_START(rc5)
86 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
87 OSSL_PARAM_uint(OSSL_CIPHER_PARAM_ROUNDS, NULL),
88 CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_END(rc5)
91 static int rc5_get_ctx_params(void *vctx, OSSL_PARAM params[])
93 PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx;
96 if (!cipher_generic_get_ctx_params(vctx, params))
98 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_ROUNDS);
99 if (p != NULL && !OSSL_PARAM_set_uint(p, ctx->rounds)) {
100 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
106 #define IMPLEMENT_cipher(alg, UCALG, lcmode, UCMODE, flags, kbits, \
107 blkbits, ivbits, typ) \
108 static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_##lcmode##_get_params; \
109 static int alg##_##kbits##_##lcmode##_get_params(OSSL_PARAM params[]) \
111 return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags, \
112 kbits, blkbits, ivbits); \
114 static OSSL_FUNC_cipher_newctx_fn alg##_##kbits##_##lcmode##_newctx; \
115 static void * alg##_##kbits##_##lcmode##_newctx(void *provctx) \
117 PROV_##UCALG##_CTX *ctx; \
118 if (!ossl_prov_is_running()) \
120 ctx = OPENSSL_zalloc(sizeof(*ctx)); \
122 cipher_generic_initkey(ctx, kbits, blkbits, ivbits, \
123 EVP_CIPH_##UCMODE##_MODE, flags, \
124 PROV_CIPHER_HW_##alg##_##lcmode(kbits), NULL); \
125 ctx->rounds = RC5_12_ROUNDS; \
129 const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = { \
130 { OSSL_FUNC_CIPHER_NEWCTX, \
131 (void (*)(void)) alg##_##kbits##_##lcmode##_newctx }, \
132 { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \
133 { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \
134 { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))cipher_generic_einit }, \
135 { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))cipher_generic_dinit }, \
136 { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))cipher_generic_##typ##_update },\
137 { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))cipher_generic_##typ##_final }, \
138 { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))cipher_generic_cipher }, \
139 { OSSL_FUNC_CIPHER_GET_PARAMS, \
140 (void (*)(void)) alg##_##kbits##_##lcmode##_get_params }, \
141 { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
142 (void (*)(void))cipher_generic_gettable_params }, \
143 { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \
144 (void (*)(void))rc5_get_ctx_params }, \
145 { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
146 (void (*)(void))rc5_gettable_ctx_params }, \
147 { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
148 (void (*)(void))rc5_set_ctx_params }, \
149 { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
150 (void (*)(void))rc5_settable_ctx_params }, \
154 /* ossl_rc5128ecb_functions */
155 IMPLEMENT_cipher(rc5, RC5, ecb, ECB, EVP_CIPH_VARIABLE_LENGTH, 128, 64, 0, block)
156 /* ossl_rc5128cbc_functions */
157 IMPLEMENT_cipher(rc5, RC5, cbc, CBC, EVP_CIPH_VARIABLE_LENGTH, 128, 64, 64, block)
158 /* ossl_rc5128ofb64_functions */
159 IMPLEMENT_cipher(rc5, RC5, ofb64, OFB, EVP_CIPH_VARIABLE_LENGTH, 128, 8, 64, stream)
160 /* ossl_rc5128cfb64_functions */
161 IMPLEMENT_cipher(rc5, RC5, cfb64, CFB, EVP_CIPH_VARIABLE_LENGTH, 128, 8, 64, stream)