/*

 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (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 <time.h>

#include <sys/types.h>

#include "internal/cryptlib.h"

#include <openssl/err.h>

#include <openssl/evp.h>

#include <openssl/buffer.h>

#include <openssl/x509.h>

#ifndef NO_ASN1_OLD

int ASN1_digest(i2d_of_void *i2d, const EVP_MD *type, char *data,

                unsigned char *md, unsigned int *len)

{

    int inl;

    unsigned char *str, *p;

    inl = i2d(data, NULL);

    if (inl <= 0) {

        ASN1err(ASN1_F_ASN1_DIGEST, ERR_R_INTERNAL_ERROR);

        return 0;

    }

    if ((str = OPENSSL_malloc(inl)) == NULL) {

        ASN1err(ASN1_F_ASN1_DIGEST, ERR_R_MALLOC_FAILURE);

        return 0;

    }

    p = str;

    i2d(data, &p);

    if (!EVP_Digest(str, inl, md, len, type, NULL)) {

        OPENSSL_free(str);

        return 0;

    }

    OPENSSL_free(str);

    return 1;

}

#endif

int ASN1_item_digest(const ASN1_ITEM *it, const EVP_MD *type, void *asn,

                     unsigned char *md, unsigned int *len)

{

    int i;

    unsigned char *str = NULL;

    i = ASN1_item_i2d(asn, &str, it);

    if (!str)

        return 0;

    if (!EVP_Digest(str, i, md, len, type, NULL)) {

        OPENSSL_free(str);

        return 0;

    }

    OPENSSL_free(str);

    return 1;

}