78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
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/*
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* Copyright 1995-2021 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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/*
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* DSA low level APIs are deprecated for public use, but still ok for
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* internal use.
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*/
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#include "internal/deprecated.h"
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#include <openssl/opensslconf.h>
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/bn.h>
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#include <openssl/rand.h>
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#include <openssl/sha.h>
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#include "crypto/dsa.h"
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#include "dsa_local.h"
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int ossl_dsa_generate_ffc_parameters(DSA *dsa, int type, int pbits, int qbits,
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BN_GENCB *cb)
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{
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int ret = 0, res;
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#ifndef FIPS_MODULE
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if (type == DSA_PARAMGEN_TYPE_FIPS_186_2)
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ret = ossl_ffc_params_FIPS186_2_generate(dsa->libctx, &dsa->params,
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FFC_PARAM_TYPE_DSA,
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pbits, qbits, &res, cb);
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else
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#endif
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ret = ossl_ffc_params_FIPS186_4_generate(dsa->libctx, &dsa->params,
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FFC_PARAM_TYPE_DSA,
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pbits, qbits, &res, cb);
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if (ret > 0)
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dsa->dirty_cnt++;
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return ret;
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}
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#ifndef FIPS_MODULE
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int DSA_generate_parameters_ex(DSA *dsa, int bits,
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const unsigned char *seed_in, int seed_len,
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int *counter_ret, unsigned long *h_ret,
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BN_GENCB *cb)
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{
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if (dsa->meth->dsa_paramgen)
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return dsa->meth->dsa_paramgen(dsa, bits, seed_in, seed_len,
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counter_ret, h_ret, cb);
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if (seed_in != NULL
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&& !ossl_ffc_params_set_validate_params(&dsa->params, seed_in, seed_len,
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-1))
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return 0;
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/* The old code used FIPS 186-2 DSA Parameter generation */
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if (bits < 2048 && seed_len <= 20) {
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if (!ossl_dsa_generate_ffc_parameters(dsa, DSA_PARAMGEN_TYPE_FIPS_186_2,
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bits, 160, cb))
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return 0;
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} else {
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if (!ossl_dsa_generate_ffc_parameters(dsa, DSA_PARAMGEN_TYPE_FIPS_186_4,
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bits, 0, cb))
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return 0;
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}
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if (counter_ret != NULL)
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*counter_ret = dsa->params.pcounter;
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if (h_ret != NULL)
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*h_ret = dsa->params.h;
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return 1;
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}
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#endif
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