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X509_GET0_DISTINGUISHING_ID(3)	    OpenSSL	X509_GET0_DISTINGUISHING_ID(3)

NAME
       X509_get0_distinguishing_id, X509_set0_distinguishing_id,
       X509_REQ_get0_distinguishing_id,	X509_REQ_set0_distinguishing_id	- get
       or set the Distinguishing ID for	certificate operations

SYNOPSIS
	#include <openssl/x509.h>

	ASN1_OCTET_STRING *X509_get0_distinguishing_id(X509 *x);
	void X509_set0_distinguishing_id(X509 *x, ASN1_OCTET_STRING *distid);
	ASN1_OCTET_STRING *X509_REQ_get0_distinguishing_id(X509_REQ *x);
	void X509_REQ_set0_distinguishing_id(X509_REQ *x, ASN1_OCTET_STRING *distid);

DESCRIPTION
       The Distinguishing ID is	defined	in FIPS	196 as follows:

       Distinguishing  identifier
	   Information which unambiguously distinguishes an entity in the
	   authentication process.

       The SM2 signature algorithm requires a Distinguishing ID	value when
       generating and verifying	a signature, but the Ddistinguishing ID	may
       also find other uses.  In the context of	SM2, the Distinguishing	ID is
       often referred to as the	"SM2 ID".

       For the purpose off verifying a certificate or a	certification request,
       a Distinguishing	ID may be attached to it, so functions like
       X509_verify(3) or X509_REQ_verify(3) have easy access to	that identity
       for signature verification.

       X509_get0_distinguishing_id() gets the Distinguishing ID	value of a
       certificate x by	returning an ASN1_OCTET_STRING object which should not
       be freed	by the caller.

       X509_set0_distinguishing_id() assigns distid to the certificate x.
       Calling this function transfers the memory management of	the value to
       the X509	object,	and therefore the value	that has been passed in	should
       not be freed by the caller after	this function has been called.

       X509_REQ_get0_distinguishing_id() and X509_REQ_set0_distinguishing_id()
       have the	same functionality as X509_get0_distinguishing_id() and
       X509_set0_distinguishing_id() except that they deal with	 X509_REQ
       objects instead of X509.

RETURN VALUES
       X509_set0_distinguishing_id() and X509_REQ_set0_distinguishing_id() do
       not return a value.

SEE ALSO
       X509_verify(3), SM2(7)

COPYRIGHT
       Copyright 2019-2020 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>.

3.0.0-alpha12			  2021-02-18	X509_GET0_DISTINGUISHING_ID(3)

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

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