Compute r = (a * b) mod m.

Synopsis

Declared in <openssl/bn.h>

int
BN_mod_mul(
    BIGNUM* r,
    BIGNUM const* a,
    BIGNUM const* b,
    BIGNUM const* m,
    BN_CTX* ctx);

Return Value

1 on success, or 0 on error.

Parameters

Name

Description

r

Destination for the product modulo m.

a

First multiplicand.

b

Second multiplicand.

m

Modulus; must be non‐zero.

ctx

BN_CTX for temporary storage.

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