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2741128e9d
The PROV_R codes can be returned to applications so it is useful to have some common set of provider reason codes for the applications or third party providers. Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/14086)
111 lines
5.3 KiB
C++
111 lines
5.3 KiB
C++
/*
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* Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* Dispatch functions for AES CBC CTS ciphers */
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#include <openssl/proverr.h>
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#include "cipher_aes_cts.h"
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#define AES_CTS_FLAGS PROV_CIPHER_FLAG_CTS
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static OSSL_FUNC_cipher_get_ctx_params_fn aes_cbc_cts_get_ctx_params;
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static OSSL_FUNC_cipher_set_ctx_params_fn aes_cbc_cts_set_ctx_params;
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static OSSL_FUNC_cipher_gettable_ctx_params_fn aes_cbc_cts_gettable_ctx_params;
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static OSSL_FUNC_cipher_settable_ctx_params_fn aes_cbc_cts_settable_ctx_params;
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CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(aes_cbc_cts)
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OSSL_PARAM_utf8_string(OSSL_CIPHER_PARAM_CTS_MODE, NULL, 0),
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CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(aes_cbc_cts)
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static int aes_cbc_cts_get_ctx_params(void *vctx, OSSL_PARAM params[])
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{
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PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
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OSSL_PARAM *p;
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p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_CTS_MODE);
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if (p != NULL) {
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const char *name = ossl_aes_cbc_cts_mode_id2name(ctx->cts_mode);
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if (name == NULL || !OSSL_PARAM_set_utf8_string(p, name)) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
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return 0;
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}
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}
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return ossl_cipher_generic_get_ctx_params(vctx, params);
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}
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CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_START(aes_cbc_cts)
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OSSL_PARAM_utf8_string(OSSL_CIPHER_PARAM_CTS_MODE, NULL, 0),
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CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_END(aes_cbc_cts)
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static int aes_cbc_cts_set_ctx_params(void *vctx, const OSSL_PARAM params[])
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{
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PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
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const OSSL_PARAM *p;
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int id;
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p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_CTS_MODE);
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if (p != NULL) {
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if (p->data_type != OSSL_PARAM_UTF8_STRING)
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goto err;
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id = ossl_aes_cbc_cts_mode_name2id(p->data);
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if (id < 0)
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goto err;
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ctx->cts_mode = (unsigned int)id;
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}
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return ossl_cipher_generic_set_ctx_params(vctx, params);
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err:
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
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return 0;
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}
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/* NOTE: The underlying block cipher is AES CBC so we reuse most of the code */
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#define IMPLEMENT_cts_cipher(alg, UCALG, lcmode, UCMODE, flags, kbits, \
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blkbits, ivbits, typ) \
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static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_##lcmode##_get_params; \
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static int alg##_cts_##kbits##_##lcmode##_get_params(OSSL_PARAM params[]) \
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{ \
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return ossl_cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags, \
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kbits, blkbits, ivbits); \
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} \
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const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_cts_functions[] = { \
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{ OSSL_FUNC_CIPHER_NEWCTX, \
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(void (*)(void)) alg##_##kbits##_##lcmode##_newctx }, \
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{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \
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{ OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \
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{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))ossl_cipher_generic_einit }, \
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{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))ossl_cipher_generic_dinit }, \
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{ OSSL_FUNC_CIPHER_UPDATE, \
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(void (*)(void)) ossl_##alg##_##lcmode##_cts_block_update }, \
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{ OSSL_FUNC_CIPHER_FINAL, \
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(void (*)(void)) ossl_##alg##_##lcmode##_cts_block_final }, \
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{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))ossl_cipher_generic_cipher }, \
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{ OSSL_FUNC_CIPHER_GET_PARAMS, \
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(void (*)(void)) alg##_cts_##kbits##_##lcmode##_get_params }, \
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{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
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(void (*)(void))ossl_cipher_generic_gettable_params }, \
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{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \
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(void (*)(void))aes_cbc_cts_get_ctx_params }, \
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{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
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(void (*)(void))aes_cbc_cts_set_ctx_params }, \
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{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
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(void (*)(void))aes_cbc_cts_gettable_ctx_params }, \
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{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
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(void (*)(void))aes_cbc_cts_settable_ctx_params }, \
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{ 0, NULL } \
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};
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/* ossl_aes256cbc_cts_functions */
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IMPLEMENT_cts_cipher(aes, AES, cbc, CBC, AES_CTS_FLAGS, 256, 128, 128, block)
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/* ossl_aes192cbc_cts_functions */
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IMPLEMENT_cts_cipher(aes, AES, cbc, CBC, AES_CTS_FLAGS, 192, 128, 128, block)
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/* ossl_aes128cbc_cts_functions */
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IMPLEMENT_cts_cipher(aes, AES, cbc, CBC, AES_CTS_FLAGS, 128, 128, 128, block)
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