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/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/serializer.h>
#include <openssl/buffer.h>
#include <openssl/x509.h>
#include "crypto/asn1.h"
#include "crypto/evp.h"
int i2d_PrivateKey(const EVP_PKEY *a, unsigned char **pp)
{
if (a->ameth && a->ameth->old_priv_encode) {
return a->ameth->old_priv_encode(a, pp);
}
if (a->ameth && a->ameth->priv_encode) {
PKCS8_PRIV_KEY_INFO *p8 = EVP_PKEY2PKCS8(a);
int ret = 0;
if (p8 != NULL) {
ret = i2d_PKCS8_PRIV_KEY_INFO(p8, pp);
PKCS8_PRIV_KEY_INFO_free(p8);
}
return ret;
}
if (a->keymgmt != NULL) {
const char *serprop = OSSL_SERIALIZER_PrivateKey_TO_DER_PQ;
OSSL_SERIALIZER_CTX *ctx =
OSSL_SERIALIZER_CTX_new_by_EVP_PKEY(a, serprop);
BIO *out = BIO_new(BIO_s_mem());
BUF_MEM *buf = NULL;
int ret = -1;
if (ctx != NULL
&& out != NULL
&& OSSL_SERIALIZER_CTX_get_serializer(ctx) != NULL
&& OSSL_SERIALIZER_to_bio(ctx, out)
&& BIO_get_mem_ptr(out, &buf) > 0) {
ret = buf->length;
if (pp != NULL) {
if (*pp == NULL) {
*pp = (unsigned char *)buf->data;
buf->length = 0;
buf->data = NULL;
} else {
memcpy(*pp, buf->data, ret);
*pp += ret;
}
}
}
BIO_free(out);
OSSL_SERIALIZER_CTX_free(ctx);
return ret;
}
ASN1err(ASN1_F_I2D_PRIVATEKEY, ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
return -1;
}
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