mirror of https://github.com/openssl/openssl.git
93 lines
2.8 KiB
C
93 lines
2.8 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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#include <openssl/core_names.h>
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#include <openssl/params.h>
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#include <openssl/ec.h>
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#include <openssl/err.h>
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#include "crypto/ecx.h"
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#include "ecx_backend.h"
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/*
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* The intention with the "backend" source file is to offer backend support
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* for legacy backends (EVP_PKEY_ASN1_METHOD and EVP_PKEY_METHOD) and provider
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* implementations alike.
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*/
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int ecx_public_from_private(ECX_KEY *key)
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{
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switch (key->type) {
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case ECX_KEY_TYPE_X25519:
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X25519_public_from_private(key->pubkey, key->privkey);
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break;
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case ECX_KEY_TYPE_ED25519:
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if (!ED25519_public_from_private(key->libctx, key->pubkey, key->privkey,
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key->propq)) {
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ECerr(0, EC_R_FAILED_MAKING_PUBLIC_KEY);
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return 0;
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}
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break;
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case ECX_KEY_TYPE_X448:
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X448_public_from_private(key->pubkey, key->privkey);
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break;
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case ECX_KEY_TYPE_ED448:
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if (!ED448_public_from_private(key->libctx, key->pubkey, key->privkey,
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key->propq)) {
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ECerr(0, EC_R_FAILED_MAKING_PUBLIC_KEY);
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return 0;
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}
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break;
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}
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return 1;
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}
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int ecx_key_fromdata(ECX_KEY *ecx, const OSSL_PARAM params[],
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int include_private)
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{
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size_t privkeylen = 0, pubkeylen = 0;
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const OSSL_PARAM *param_priv_key = NULL, *param_pub_key;
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unsigned char *pubkey;
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if (ecx == NULL)
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return 0;
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param_pub_key = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PUB_KEY);
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if (include_private)
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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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if (param_pub_key == NULL && param_priv_key == NULL)
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return 0;
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if (param_priv_key != NULL
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&& !OSSL_PARAM_get_octet_string(param_priv_key,
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(void **)&ecx->privkey, ecx->keylen,
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&privkeylen))
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return 0;
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pubkey = ecx->pubkey;
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if (param_pub_key != NULL
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&& !OSSL_PARAM_get_octet_string(param_pub_key,
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(void **)&pubkey,
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sizeof(ecx->pubkey), &pubkeylen))
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return 0;
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if ((param_pub_key != NULL && pubkeylen != ecx->keylen)
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|| (param_priv_key != NULL && privkeylen != ecx->keylen))
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return 0;
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if (param_pub_key == NULL && !ecx_public_from_private(ecx))
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return 0;
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ecx->haspubkey = 1;
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return 1;
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}
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