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BN_MOD_INVERSE(3)		    OpenSSL		     BN_MOD_INVERSE(3)

NAME
       BN_mod_inverse -	compute	inverse	modulo n

SYNOPSIS
	#include <openssl/bn.h>

	BIGNUM *BN_mod_inverse(BIGNUM *r, BIGNUM *a, const BIGNUM *n,
			       BN_CTX *ctx);

DESCRIPTION
       BN_mod_inverse()	computes the inverse of	a modulo n places the result
       in r ("(a*r)%n==1"). If r is NULL, a new	BIGNUM is created.

       ctx is a	previously allocated BN_CTX used for temporary variables. r
       may be the same BIGNUM as a or n.

RETURN VALUES
       BN_mod_inverse()	returns	the BIGNUM containing the inverse, and NULL on
       error. The error	codes can be obtained by ERR_get_error(3).

SEE ALSO
       ERR_get_error(3), BN_add(3)

COPYRIGHT
       Copyright 2000-2017 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		     BN_MOD_INVERSE(3)

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

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