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OCSP_CERT_TO_ID(3)		    OpenSSL		    OCSP_CERT_TO_ID(3)

NAME
       OCSP_cert_to_id,	OCSP_cert_id_new, OCSP_CERTID_free,
       OCSP_id_issuer_cmp, OCSP_id_cmp,	OCSP_id_get0_info - OCSP certificate
       ID utility functions

SYNOPSIS
	#include <openssl/ocsp.h>

	OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst,
				     X509 *subject, X509 *issuer);

	OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
				      X509_NAME	*issuerName,
				      ASN1_BIT_STRING *issuerKey,
				      ASN1_INTEGER *serialNumber);

	void OCSP_CERTID_free(OCSP_CERTID *id);

	int OCSP_id_issuer_cmp(const OCSP_CERTID *a, const OCSP_CERTID *b);
	int OCSP_id_cmp(const OCSP_CERTID *a, const OCSP_CERTID	*b);

	int OCSP_id_get0_info(ASN1_OCTET_STRING	**piNameHash, ASN1_OBJECT **pmd,
			      ASN1_OCTET_STRING	**pikeyHash,
			      ASN1_INTEGER **pserial, OCSP_CERTID *cid);

DESCRIPTION
       OCSP_cert_to_id() creates and returns a new OCSP_CERTID structure using
       message digest dgst for certificate subject with	issuer issuer. If dgst
       is NULL then SHA1 is used.

       OCSP_cert_id_new() creates and returns a	new OCSP_CERTID	using dgst and
       issuer name issuerName, issuer key hash issuerKey and serial number
       serialNumber.

       OCSP_CERTID_free() frees	up id.

       OCSP_id_cmp() compares OCSP_CERTID a and	b.

       OCSP_id_issuer_cmp() compares only the issuer name of OCSP_CERTID a and
       b.

       OCSP_id_get0_info() returns the issuer name hash, hash OID, issuer key
       hash and	serial number contained	in cid.	If any of the values are not
       required	the corresponding parameter can	be set to NULL.

RETURN VALUES
       OCSP_cert_to_id() and OCSP_cert_id_new()	return either a	pointer	to a
       valid OCSP_CERTID structure or NULL if an error occurred.

       OCSP_id_cmp() and OCSP_id_issuer_cmp() returns zero for a match and
       non-zero	otherwise.

       OCSP_CERTID_free() does not return a value.

       OCSP_id_get0_info() returns 1 for success and 0 for failure.

NOTES
       OCSP clients will typically only	use OCSP_cert_to_id() or
       OCSP_cert_id_new(): the other functions are used	by responder
       applications.

       The values returned by OCSP_id_get0_info() are internal pointers	and
       MUST NOT	be freed up by an application: they will be freed when the
       corresponding OCSP_CERTID structure is freed.

SEE ALSO
       crypto(7), OCSP_request_add1_nonce(3), OCSP_REQUEST_new(3),
       OCSP_resp_find_status(3), OCSP_response_status(3), OCSP_sendreq_new(3)

COPYRIGHT
       Copyright 2015-2019 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>.

1.1.1d				  2019-09-10		    OCSP_CERT_TO_ID(3)

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

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