ldns_init_random(3)

ldns_init_random3

Seed the random function

Usage

#include <stdint.h>
#include <stdbool.h>

#include <ldns/ldns.h>

int ldns_init_random(FILE *fd, unsigned int size);

Overview

ldns_init_random() Seed the random function. If the file descriptor is specified, the random generator is seeded with data from that file. If not, /dev/urandom is used.

applications should call this if they need entropy data within ldns If openSSL is available, it is automatically seeded from /dev/urandom or /dev/random.

If you need more entropy, or have no openssl available, this function MUST be called at the start of the program

If openssl *is* available, this function just adds more entropy

.br fd: a file providing entropy data for the seed .br size: the number of bytes to use as entropy data. If this is 0, only the minimal amount is taken (usually 4 bytes) .br Returns 0 if seeding succeeds, 1 if it fails

Remarks

This manpage was automatically generated from the ldns source code.

Releases

10 releases since Debian 5.0 (Lenny); the text changed 6 times.

  1. 5.0
  2. 6.0–7
  3. 8
  4. 9–10
  5. 11–12
  6. 13
  7. Arch

Author

The ldns team at NLnet Labs.

Reporting bugs

Please report bugs to [email protected] or on GitHub at https://github.com/NLnetLabs/ldns/issues

From ldns 1.9.2-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.