1X509_DIGEST(3)                      OpenSSL                     X509_DIGEST(3)
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NAME

6       X509_digest, X509_CRL_digest, X509_pubkey_digest, X509_NAME_digest,
7       X509_REQ_digest, PKCS7_ISSUER_AND_SERIAL_digest - get digest of various
8       objects
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SYNOPSIS

11        #include <openssl/x509.h>
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13        int X509_digest(const X509 *data, const EVP_MD *type, unsigned char *md,
14                        unsigned int *len);
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16        int X509_CRL_digest(const X509_CRL *data, const EVP_MD *type, unsigned char *md,
17                            unsigned int *len);
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19        int X509_pubkey_digest(const X509 *data, const EVP_MD *type,
20                               unsigned char *md, unsigned int *len);
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22        int X509_REQ_digest(const X509_REQ *data, const EVP_MD *type,
23                            unsigned char *md, unsigned int *len);
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25        int X509_NAME_digest(const X509_NAME *data, const EVP_MD *type,
26                             unsigned char *md, unsigned int *len);
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28        #include <openssl/pkcs7.h>
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30        int PKCS7_ISSUER_AND_SERIAL_digest(PKCS7_ISSUER_AND_SERIAL *data,
31                                           const EVP_MD *type, unsigned char *md,
32                                           unsigned int *len);
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DESCRIPTION

35       X509_pubkey_digest() returns a digest of the DER representation of the
36       public key in the specified X509 data object.  All other functions
37       described here return a digest of the DER representation of their
38       entire data objects.
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40       The type parameter specifies the digest to be used, such as EVP_sha1().
41       The md is a pointer to the buffer where the digest will be copied and
42       is assumed to be large enough; the constant EVP_MAX_MD_SIZE is
43       suggested. The len parameter, if not NULL, points to a place where the
44       digest size will be stored.
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RETURN VALUES

47       All functions described here return 1 for success and 0 for failure.
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SEE ALSO

50       EVP_sha1(3)
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53       Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
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55       Licensed under the OpenSSL license (the "License").  You may not use
56       this file except in compliance with the License.  You can obtain a copy
57       in the file LICENSE in the source distribution or at
58       <https://www.openssl.org/source/license.html>.
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621.1.1l                            2021-09-15                    X509_DIGEST(3)
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