Montgomery modular dual exponentiation: r = a1ˆp1 * a2ˆp2 mod m.

Synopsis

Declared in <openssl/bn.h>

int
BN_mod_exp2_mont(
    BIGNUM* r,
    BIGNUM const* a1,
    BIGNUM const* p1,
    BIGNUM const* a2,
    BIGNUM const* p2,
    BIGNUM const* m,
    BN_CTX* ctx,
    BN_MONT_CTX* m_ctx);

Return Value

1 on success, or 0 on error.

Parameters

Name

Description

r

Destination.

a1

First base.

p1

First exponent.

a2

Second base.

p2

Second exponent.

m

Odd modulus matching m_ctx.

ctx

BN_CTX scratch space.

m_ctx

Montgomery context for m.

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