6aa2e59e1c
Convert EVP_PKEY Parameters to/from binary. This wraps the low level i2d/d2i calls for DH,DSA and EC key parameters in a similar way to Public and Private Keys. The API's can be used by applications (including openssl apps) that only want to use EVP_PKEY without needing to access low level key API's. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/8903)
65 lines
1.6 KiB
C
65 lines
1.6 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 <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/asn1.h>
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#include "internal/evp_int.h"
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#include "internal/asn1_int.h"
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EVP_PKEY *d2i_KeyParams(int type, EVP_PKEY **a, const unsigned char **pp,
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long length)
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{
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EVP_PKEY *ret = NULL;
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const unsigned char *p = *pp;
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if ((a == NULL) || (*a == NULL)) {
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if ((ret = EVP_PKEY_new()) == NULL)
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return NULL;
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} else
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ret = *a;
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if (type != EVP_PKEY_id(ret) && !EVP_PKEY_set_type(ret, type))
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goto err;
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if (ret->ameth == NULL || ret->ameth->param_decode == NULL) {
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ASN1err(ASN1_F_D2I_KEYPARAMS, ASN1_R_UNSUPPORTED_TYPE);
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goto err;
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}
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if (!ret->ameth->param_decode(ret, &p, length))
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goto err;
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if (a != NULL)
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(*a) = ret;
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return ret;
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err:
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if (a == NULL || *a != ret)
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EVP_PKEY_free(ret);
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return NULL;
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}
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EVP_PKEY *d2i_KeyParams_bio(int type, EVP_PKEY **a, BIO *in)
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{
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BUF_MEM *b = NULL;
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const unsigned char *p;
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void *ret = NULL;
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int len;
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len = asn1_d2i_read_bio(in, &b);
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if (len < 0)
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goto err;
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p = (unsigned char *)b->data;
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ret = d2i_KeyParams(type, a, &p, len);
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err:
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BUF_MEM_free(b);
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return ret;
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}
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