Montgomery multiply a and b modulo mont's modulus into r.

Synopsis

Declared in <openssl/bn.h>

int
BN_mod_mul_montgomery(
    BIGNUM* r,
    BIGNUM const* a,
    BIGNUM const* b,
    BN_MONT_CTX* mont,
    BN_CTX* ctx);

Return Value

1 on success, or 0 on error.

Parameters

Name

Description

r

Destination product in the Montgomery domain (or ordinary form depending on inputs).

a

First factor (typically already in Montgomery form).

b

Second factor (typically already in Montgomery form).

mont

Montgomery context from BN_MONT_CTX_set().

ctx

BN_CTX scratch space.

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