mirror of https://github.com/openssl/openssl.git
133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/*
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* Copyright 2020-2021 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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#include <stdlib.h>
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#include <openssl/core_names.h>
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#include <openssl/err.h>
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#include <openssl/dsa.h>
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#include <openssl/evp.h>
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#include "crypto/evp.h"
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static int dsa_paramgen_check(EVP_PKEY_CTX *ctx)
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{
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if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
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ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
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/* Uses the same return values as EVP_PKEY_CTX_ctrl */
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return -2;
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}
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/* If key type not DSA return error */
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if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_DSA)
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return -1;
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return 1;
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}
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int EVP_PKEY_CTX_set_dsa_paramgen_type(EVP_PKEY_CTX *ctx, const char *name)
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{
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int ret;
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OSSL_PARAM params[2], *p = params;
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if ((ret = dsa_paramgen_check(ctx)) <= 0)
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return ret;
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*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_TYPE,
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(char *)name, 0);
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*p++ = OSSL_PARAM_construct_end();
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return EVP_PKEY_CTX_set_params(ctx, params);
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}
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int EVP_PKEY_CTX_set_dsa_paramgen_gindex(EVP_PKEY_CTX *ctx, int gindex)
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{
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int ret;
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OSSL_PARAM params[2], *p = params;
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if ((ret = dsa_paramgen_check(ctx)) <= 0)
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return ret;
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*p++ = OSSL_PARAM_construct_int(OSSL_PKEY_PARAM_FFC_GINDEX, &gindex);
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*p++ = OSSL_PARAM_construct_end();
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return EVP_PKEY_CTX_set_params(ctx, params);
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}
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int EVP_PKEY_CTX_set_dsa_paramgen_seed(EVP_PKEY_CTX *ctx,
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const unsigned char *seed,
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size_t seedlen)
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{
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int ret;
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OSSL_PARAM params[2], *p = params;
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if ((ret = dsa_paramgen_check(ctx)) <= 0)
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return ret;
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*p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_FFC_SEED,
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(void *)seed, seedlen);
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*p++ = OSSL_PARAM_construct_end();
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return EVP_PKEY_CTX_set_params(ctx, params);
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}
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int EVP_PKEY_CTX_set_dsa_paramgen_bits(EVP_PKEY_CTX *ctx, int nbits)
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{
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int ret;
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OSSL_PARAM params[2], *p = params;
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size_t bits = nbits;
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if ((ret = dsa_paramgen_check(ctx)) <= 0)
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return ret;
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*p++ = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_FFC_PBITS, &bits);
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*p++ = OSSL_PARAM_construct_end();
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return EVP_PKEY_CTX_set_params(ctx, params);
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}
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int EVP_PKEY_CTX_set_dsa_paramgen_q_bits(EVP_PKEY_CTX *ctx, int qbits)
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{
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int ret;
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OSSL_PARAM params[2], *p = params;
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size_t bits2 = qbits;
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if ((ret = dsa_paramgen_check(ctx)) <= 0)
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return ret;
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*p++ = OSSL_PARAM_construct_size_t(OSSL_PKEY_PARAM_FFC_QBITS, &bits2);
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*p++ = OSSL_PARAM_construct_end();
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return EVP_PKEY_CTX_set_params(ctx, params);
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}
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int EVP_PKEY_CTX_set_dsa_paramgen_md_props(EVP_PKEY_CTX *ctx,
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const char *md_name,
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const char *md_properties)
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{
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int ret;
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OSSL_PARAM params[3], *p = params;
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if ((ret = dsa_paramgen_check(ctx)) <= 0)
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return ret;
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*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST,
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(char *)md_name, 0);
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if (md_properties != NULL)
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*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_FFC_DIGEST_PROPS,
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(char *)md_properties, 0);
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*p++ = OSSL_PARAM_construct_end();
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return EVP_PKEY_CTX_set_params(ctx, params);
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}
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#if !defined(FIPS_MODULE)
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int EVP_PKEY_CTX_set_dsa_paramgen_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
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{
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return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN,
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EVP_PKEY_CTRL_DSA_PARAMGEN_MD, 0, (void *)(md));
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}
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#endif
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