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BN_mod_inverse
Section: OpenSSL (3) Updated: 2017-05-25 Index
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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
bn(3), ERR_get_error(3), BN_add(3)
HISTORY
BN_mod_inverse() is available in all versions of SSLeay and OpenSSL.
Index
- NAME
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- SYNOPSIS
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- DESCRIPTION
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- RETURN VALUES
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- SEE ALSO
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- HISTORY
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