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/providercommonerr.h"
22 static OSSL_OP_cipher_freectx_fn rc5_freectx;
23 static OSSL_OP_cipher_dupctx_fn rc5_dupctx;
24 OSSL_OP_cipher_gettable_ctx_params_fn rc5_gettable_ctx_params;
25 OSSL_OP_cipher_settable_ctx_params_fn rc5_settable_ctx_params;
27 static void rc5_freectx(void *vctx)
29 PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx;
31 OPENSSL_clear_free(ctx, sizeof(*ctx));
34 static void *rc5_dupctx(void *ctx)
36 PROV_RC5_CTX *in = (PROV_RC5_CTX *)ctx;
37 PROV_RC5_CTX *ret = OPENSSL_malloc(sizeof(*ret));
40 ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
48 static int rc5_set_ctx_params(void *vctx, const OSSL_PARAM params[])
50 PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx;
53 if (!cipher_var_keylen_set_ctx_params(vctx, params))
56 p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_ROUNDS);
60 if (!OSSL_PARAM_get_uint(p, &rounds)) {
61 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
64 if (rounds != RC5_8_ROUNDS
65 && rounds != RC5_12_ROUNDS
66 && rounds != RC5_16_ROUNDS) {
67 ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_NUMBER_OF_ROUNDS);
75 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(rc5)
76 OSSL_PARAM_uint(OSSL_CIPHER_PARAM_ROUNDS, NULL),
77 CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(rc5)
79 CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_START(rc5)
80 OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
81 OSSL_PARAM_uint(OSSL_CIPHER_PARAM_ROUNDS, NULL),
82 CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_END(rc5)
85 static int rc5_get_ctx_params(void *vctx, OSSL_PARAM params[])
87 PROV_RC5_CTX *ctx = (PROV_RC5_CTX *)vctx;
90 if (!cipher_generic_get_ctx_params(vctx, params))
92 p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_ROUNDS);
93 if (p != NULL && !OSSL_PARAM_set_uint(p, ctx->rounds)) {
94 ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
100 #define IMPLEMENT_cipher(alg, UCALG, lcmode, UCMODE, flags, kbits, \
101 blkbits, ivbits, typ) \
102 static OSSL_OP_cipher_get_params_fn alg##_##kbits##_##lcmode##_get_params; \
103 static int alg##_##kbits##_##lcmode##_get_params(OSSL_PARAM params[]) \
105 return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags, \
106 kbits, blkbits, ivbits); \
108 static OSSL_OP_cipher_newctx_fn alg##_##kbits##_##lcmode##_newctx; \
109 static void * alg##_##kbits##_##lcmode##_newctx(void *provctx) \
111 PROV_##UCALG##_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx)); \
113 cipher_generic_initkey(ctx, kbits, blkbits, ivbits, \
114 EVP_CIPH_##UCMODE##_MODE, flags, \
115 PROV_CIPHER_HW_##alg##_##lcmode(kbits), NULL); \
116 ctx->rounds = RC5_12_ROUNDS; \
120 const OSSL_DISPATCH alg##kbits##lcmode##_functions[] = { \
121 { OSSL_FUNC_CIPHER_NEWCTX, \
122 (void (*)(void)) alg##_##kbits##_##lcmode##_newctx }, \
123 { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \
124 { OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \
125 { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))cipher_generic_einit }, \
126 { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))cipher_generic_dinit }, \
127 { OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))cipher_generic_##typ##_update },\
128 { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))cipher_generic_##typ##_final }, \
129 { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))cipher_generic_cipher }, \
130 { OSSL_FUNC_CIPHER_GET_PARAMS, \
131 (void (*)(void)) alg##_##kbits##_##lcmode##_get_params }, \
132 { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
133 (void (*)(void))cipher_generic_gettable_params }, \
134 { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \
135 (void (*)(void))rc5_get_ctx_params }, \
136 { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
137 (void (*)(void))rc5_gettable_ctx_params }, \
138 { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
139 (void (*)(void))rc5_set_ctx_params }, \
140 { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
141 (void (*)(void))rc5_settable_ctx_params }, \
145 /* rc5128ecb_functions */
146 IMPLEMENT_cipher(rc5, RC5, ecb, ECB, EVP_CIPH_VARIABLE_LENGTH, 128, 64, 0, block)
147 /* rc5128cbc_functions */
148 IMPLEMENT_cipher(rc5, RC5, cbc, CBC, EVP_CIPH_VARIABLE_LENGTH, 128, 64, 64, block)
149 /* rc5128ofb64_functions */
150 IMPLEMENT_cipher(rc5, RC5, ofb64, OFB, EVP_CIPH_VARIABLE_LENGTH, 128, 8, 64, stream)
151 /* rc5128cfb64_functions */
152 IMPLEMENT_cipher(rc5, RC5, cfb64, CFB, EVP_CIPH_VARIABLE_LENGTH, 128, 8, 64, stream)