view libtomcrypt/src/pk/dsa/dsa_make_key.c @ 1861:2b3a8026a6ce

Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents 6dba84798cd5
children
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt.h"

/**
   @file dsa_make_key.c
   DSA implementation, generate a DSA key
*/

#ifdef LTC_MDSA

/**
  Old-style creation of a DSA key
  @param prng          An active PRNG state
  @param wprng         The index of the PRNG desired
  @param group_size    Size of the multiplicative group (octets)
  @param modulus_size  Size of the modulus (octets)
  @param key           [out] Where to store the created key
  @return CRYPT_OK if successful.
*/
int dsa_make_key(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key)
{
  int err;

  if ((err = dsa_generate_pqg(prng, wprng, group_size, modulus_size, key)) != CRYPT_OK) { return err; }
  if ((err = dsa_generate_key(prng, wprng, key)) != CRYPT_OK) { return err; }

  return CRYPT_OK;
}

#endif

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