BN_mod_inverse man page on DragonFly

BN_mod_inverse man page on DragonFly

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BN_MOD_INVERSE(3)	 BSD Library Functions Manual	     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 add 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, or NULL on
     error.  The error codes can be obtained by ERR_get_error(3).

SEE ALSO
     bn(3), BN_add(3), ERR_get_error(3)

HISTORY
     BN_mod_inverse() is available in all versions of SSLeay and OpenSSL.

BSD				April 18, 2024				   BSD

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