DH_meth_set_bn_mod

Set the modular‐exponentiation callback on a DH_METHOD (deprecated).

Synopsis

Declared in <openssl/dh.h>

[[deprecated]]
int
DH_meth_set_bn_mod_exp(
    DH_METHOD* dhm,
    int(* bn_mod_exp)(DH const*, BIGNUM*, BIGNUM const*, BIGNUM const*, BIGNUM const*, BN_CTX*, BN_MONT_CTX*));

Warning

Deprecated. Use of this entity is allowed but discouraged.

Description

The callback computes r = aˆp mod m and is used by the default DH_generate_key() implementation. Prefer provider APIs for new code.

Return Value

1 on success, or 0 on failure.

Parameters

Name

Description

dhm

Method table to update.

bn_mod_exp

Callback implementing modular exponentiation, or NULL to clear (must be non‐NULL when using the default generate_key).

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