Probable‐primality test with optional trial division (deprecated; prefer BN_check_prime).

Synopsis

Declared in <openssl/bn.h>

[[deprecated]]
int
BN_is_prime_fasttest_ex(
    BIGNUM const* p,
    int nchecks,
    BN_CTX* ctx,
    int do_trial_division,
    BN_GENCB* cb);
Warning

Deprecated. Use of this entity is allowed but discouraged.

Return Value

1 if p is probably prime, 0 if composite, or ‐1 on error.

Parameters

Name

Description

p

Candidate integer.

nchecks

Number of Miller–Rabin rounds, or 0 for a size‐based default.

ctx

BN_CTX scratch, or NULL.

do_trial_division

Non‐zero to trial‐divide by small primes first.

cb

Optional progress callback, or NULL.

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