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X509_DIGEST(3)			    OpenSSL			X509_DIGEST(3)

NAME
       X509_digest, X509_CRL_digest, X509_pubkey_digest, X509_NAME_digest,
       X509_REQ_digest,	PKCS7_ISSUER_AND_SERIAL_digest - get digest of various
       objects

SYNOPSIS
	#include <openssl/x509.h>

	int X509_digest(const X509 *data, const	EVP_MD *type, unsigned char *md,
			unsigned int *len);

	int X509_CRL_digest(const X509_CRL *data, const	EVP_MD *type, unsigned char *md,
			    unsigned int *len);

	int X509_pubkey_digest(const X509 *data, const EVP_MD *type,
			       unsigned	char *md, unsigned int *len);

	int X509_REQ_digest(const X509_REQ *data, const	EVP_MD *type,
			    unsigned char *md, unsigned	int *len);

	int X509_NAME_digest(const X509_NAME *data, const EVP_MD *type,
			     unsigned char *md,	unsigned int *len);

	#include <openssl/pkcs7.h>

	int PKCS7_ISSUER_AND_SERIAL_digest(PKCS7_ISSUER_AND_SERIAL *data,
					   const EVP_MD	*type, unsigned	char *md,
					   unsigned int	*len);

DESCRIPTION
       X509_pubkey_digest() returns a digest of	the DER	representation of the
       public key in the specified X509	data object.  All other	functions
       described here return a digest of the DER representation	of their
       entire data objects.

       The type	parameter specifies the	digest to be used, such	as EVP_sha1().
       The md is a pointer to the buffer where the digest will be copied and
       is assumed to be	large enough; the constant EVP_MAX_MD_SIZE is
       suggested. The len parameter, if	not NULL, points to a place where the
       digest size will	be stored.

RETURN VALUES
       All functions described here return 1 for success and 0 for failure.

SEE ALSO
       EVP_sha1(3)

COPYRIGHT
       Copyright 2017-2018 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>.

1.1.1a				  2018-11-20			X509_DIGEST(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | COPYRIGHT

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