BN_MOD_INVERSE(3) BSD Library Functions Manual BN_MOD_INVERSE(3)NAMEBN_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);
DESCRIPTIONBN_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 VALUESBN_mod_inverse() returns the BIGNUM containing the inverse, or NULL on
error. The error codes can be obtained by ERR_get_error(3).
SEE ALSObn(3), BN_add(3), ERR_get_error(3)HISTORYBN_mod_inverse() is available in all versions of SSLeay and OpenSSL.
BSD May 15, 2024 BSD