mirror of
https://github.com/openssl/openssl.git
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90d3cb57c6
Reviewed-by: Patrick Steuer <patrick.steuer@de.ibm.com> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/10964)
316 lines
9.1 KiB
C
316 lines
9.1 KiB
C
/*
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* Copyright 2019 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 <openssl/core_numbers.h>
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#include <openssl/core_names.h>
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#include <openssl/bn.h>
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#include <openssl/params.h>
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#include "internal/param_build.h"
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#include "crypto/dsa.h"
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#include "prov/implementations.h"
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#include "prov/providercommon.h"
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#include "prov/provider_ctx.h"
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#include "crypto/dsa.h"
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static OSSL_OP_keymgmt_new_fn dsa_newdata;
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static OSSL_OP_keymgmt_free_fn dsa_freedata;
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static OSSL_OP_keymgmt_get_params_fn dsa_get_params;
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static OSSL_OP_keymgmt_gettable_params_fn dsa_gettable_params;
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static OSSL_OP_keymgmt_has_fn dsa_has;
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static OSSL_OP_keymgmt_import_fn dsa_import;
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static OSSL_OP_keymgmt_import_types_fn dsa_import_types;
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static OSSL_OP_keymgmt_export_fn dsa_export;
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static OSSL_OP_keymgmt_export_types_fn dsa_export_types;
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#define DSA_DEFAULT_MD "SHA256"
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#define DSA_POSSIBLE_SELECTIONS \
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(OSSL_KEYMGMT_SELECT_KEYPAIR | OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS)
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static int params_to_domparams(DSA *dsa, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *param_p, *param_q, *param_g;
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BIGNUM *p = NULL, *q = NULL, *g = NULL;
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if (dsa == NULL)
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return 0;
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param_p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_P);
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param_q = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_Q);
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param_g = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_FFC_G);
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if ((param_p != NULL && !OSSL_PARAM_get_BN(param_p, &p))
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|| (param_q != NULL && !OSSL_PARAM_get_BN(param_q, &q))
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|| (param_g != NULL && !OSSL_PARAM_get_BN(param_g, &g)))
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goto err;
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if (!DSA_set0_pqg(dsa, p, q, g))
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goto err;
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return 1;
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err:
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BN_free(p);
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BN_free(q);
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BN_free(g);
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return 0;
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}
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static int domparams_to_params(DSA *dsa, OSSL_PARAM_BLD *tmpl)
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{
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const BIGNUM *dsa_p = NULL, *dsa_q = NULL, *dsa_g = NULL;
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if (dsa == NULL)
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return 0;
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DSA_get0_pqg(dsa, &dsa_p, &dsa_q, &dsa_g);
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if (dsa_p != NULL
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&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_P, dsa_p))
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return 0;
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if (dsa_q != NULL
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&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_Q, dsa_q))
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return 0;
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if (dsa_g != NULL
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&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_FFC_G, dsa_g))
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return 0;
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return 1;
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}
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static int params_to_key(DSA *dsa, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *param_priv_key, *param_pub_key;
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BIGNUM *priv_key = NULL, *pub_key = NULL;
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if (dsa == NULL)
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return 0;
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if (!params_to_domparams(dsa, params))
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return 0;
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param_priv_key =
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OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
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param_pub_key =
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OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PUB_KEY);
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/*
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* DSA documentation says that a public key must be present if a private key
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* is.
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*/
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if (param_priv_key != NULL && param_pub_key == NULL)
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return 0;
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if ((param_priv_key != NULL
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&& !OSSL_PARAM_get_BN(param_priv_key, &priv_key))
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|| (param_pub_key != NULL
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&& !OSSL_PARAM_get_BN(param_pub_key, &pub_key)))
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goto err;
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if (pub_key != NULL && !DSA_set0_key(dsa, pub_key, priv_key))
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goto err;
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return 1;
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err:
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BN_free(priv_key);
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BN_free(pub_key);
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return 0;
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}
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static int key_to_params(DSA *dsa, OSSL_PARAM_BLD *tmpl)
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{
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const BIGNUM *priv_key = NULL, *pub_key = NULL;
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if (dsa == NULL)
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return 0;
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if (!domparams_to_params(dsa, tmpl))
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return 0;
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DSA_get0_key(dsa, &pub_key, &priv_key);
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if (priv_key != NULL
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&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_PRIV_KEY, priv_key))
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return 0;
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if (pub_key != NULL
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&& !ossl_param_bld_push_BN(tmpl, OSSL_PKEY_PARAM_PUB_KEY, pub_key))
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return 0;
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return 1;
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}
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static void *dsa_newdata(void *provctx)
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{
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return DSA_new();
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}
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static void dsa_freedata(void *keydata)
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{
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DSA_free(keydata);
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}
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static int dsa_has(void *keydata, int selection)
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{
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DSA *dsa = keydata;
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int ok = 0;
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if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
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ok = 1;
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if ((selection & OSSL_KEYMGMT_SELECT_PUBLIC_KEY) != 0)
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ok = ok && (DSA_get0_pub_key(dsa) != NULL);
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if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
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ok = ok && (DSA_get0_priv_key(dsa) != NULL);
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if ((selection & OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS) != 0)
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ok = ok && (DSA_get0_p(dsa) != NULL && DSA_get0_g(dsa) != NULL);
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return ok;
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}
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static int dsa_import(void *keydata, int selection, const OSSL_PARAM params[])
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{
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DSA *dsa = keydata;
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int ok = 0;
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if (dsa == NULL)
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return 0;
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if ((selection & DSA_POSSIBLE_SELECTIONS) != 0)
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ok = 1;
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if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
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ok = ok && params_to_domparams(dsa, params);
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if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
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ok = ok && params_to_key(dsa, params);
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return ok;
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}
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static int dsa_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
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void *cbarg)
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{
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DSA *dsa = keydata;
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OSSL_PARAM_BLD tmpl;
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OSSL_PARAM *params = NULL;
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int ok = 1;
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if (dsa == NULL)
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return 0;
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ossl_param_bld_init(&tmpl);
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if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
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ok = ok && domparams_to_params(dsa, &tmpl);
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if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
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ok = ok && key_to_params(dsa, &tmpl);
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if (!ok
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|| (params = ossl_param_bld_to_param(&tmpl)) == NULL)
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return 0;
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ok = param_cb(params, cbarg);
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ossl_param_bld_free(params);
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return ok;
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}
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/* IMEXPORT = IMPORT + EXPORT */
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# define DSA_IMEXPORTABLE_PARAMETERS \
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OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_P, NULL, 0), \
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OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_Q, NULL, 0), \
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OSSL_PARAM_BN(OSSL_PKEY_PARAM_FFC_G, NULL, 0)
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# define DSA_IMEXPORTABLE_PUBLIC_KEY \
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OSSL_PARAM_BN(OSSL_PKEY_PARAM_PUB_KEY, NULL, 0)
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# define DSA_IMEXPORTABLE_PRIVATE_KEY \
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OSSL_PARAM_BN(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0)
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static const OSSL_PARAM dsa_all_types[] = {
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DSA_IMEXPORTABLE_PARAMETERS,
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DSA_IMEXPORTABLE_PUBLIC_KEY,
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DSA_IMEXPORTABLE_PRIVATE_KEY,
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OSSL_PARAM_END
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};
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static const OSSL_PARAM dsa_parameter_types[] = {
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DSA_IMEXPORTABLE_PARAMETERS,
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OSSL_PARAM_END
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};
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static const OSSL_PARAM dsa_key_types[] = {
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DSA_IMEXPORTABLE_PUBLIC_KEY,
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DSA_IMEXPORTABLE_PRIVATE_KEY,
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OSSL_PARAM_END
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};
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static const OSSL_PARAM *dsa_types[] = {
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NULL, /* Index 0 = none of them */
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dsa_parameter_types, /* Index 1 = parameter types */
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dsa_key_types, /* Index 2 = key types */
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dsa_all_types /* Index 3 = 1 + 2 */
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};
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static const OSSL_PARAM *dsa_imexport_types(int selection)
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{
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int type_select = 0;
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if ((selection & OSSL_KEYMGMT_SELECT_ALL_PARAMETERS) != 0)
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type_select += 1;
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if ((selection & OSSL_KEYMGMT_SELECT_KEYPAIR) != 0)
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type_select += 2;
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return dsa_types[type_select];
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}
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static const OSSL_PARAM *dsa_import_types(int selection)
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{
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return dsa_imexport_types(selection);
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}
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static const OSSL_PARAM *dsa_export_types(int selection)
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{
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return dsa_imexport_types(selection);
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}
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static ossl_inline int dsa_get_params(void *key, OSSL_PARAM params[])
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{
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DSA *dsa = key;
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OSSL_PARAM *p;
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if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_BITS)) != NULL
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&& !OSSL_PARAM_set_int(p, DSA_bits(dsa)))
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return 0;
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if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_SECURITY_BITS)) != NULL
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&& !OSSL_PARAM_set_int(p, DSA_security_bits(dsa)))
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return 0;
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if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_MAX_SIZE)) != NULL
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&& !OSSL_PARAM_set_int(p, DSA_size(dsa)))
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return 0;
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if ((p = OSSL_PARAM_locate(params, OSSL_PKEY_PARAM_DEFAULT_DIGEST)) != NULL
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&& !OSSL_PARAM_set_utf8_string(p, DSA_DEFAULT_MD))
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return 0;
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return 1;
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}
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static const OSSL_PARAM dsa_params[] = {
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OSSL_PARAM_int(OSSL_PKEY_PARAM_BITS, NULL),
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OSSL_PARAM_int(OSSL_PKEY_PARAM_SECURITY_BITS, NULL),
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OSSL_PARAM_int(OSSL_PKEY_PARAM_MAX_SIZE, NULL),
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OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_DEFAULT_DIGEST, NULL, 0),
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OSSL_PARAM_END
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};
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static const OSSL_PARAM *dsa_gettable_params(void)
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{
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return dsa_params;
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}
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const OSSL_DISPATCH dsa_keymgmt_functions[] = {
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{ OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))dsa_newdata },
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{ OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))dsa_freedata },
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{ OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))dsa_get_params },
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{ OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))dsa_gettable_params },
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{ OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))dsa_has },
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{ OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))dsa_import },
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{ OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))dsa_import_types },
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{ OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))dsa_export },
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{ OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))dsa_export_types },
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{ 0, NULL }
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};
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