Modular addition: r = (a + b) mod m with non‐negative result.

Synopsis

Declared in <openssl/bn.h>

int
BN_mod_add(
    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.

a

First addend.

b

Second addend.

m

Modulus.

ctx

BN_CTX scratch space.

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