Mercurial > dropbear
view libtomcrypt/src/misc/crypt/crypt_find_hash_id.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 crypt_find_hash_id.c Find hash by ID, Tom St Denis */ /** Find a hash by ID number @param ID The ID (not same as index) of the hash to find @return >= 0 if found, -1 if not present */ int find_hash_id(unsigned char ID) { int x; LTC_MUTEX_LOCK(<c_hash_mutex); for (x = 0; x < TAB_SIZE; x++) { if (hash_descriptor[x].ID == ID) { x = (hash_descriptor[x].name == NULL) ? -1 : x; LTC_MUTEX_UNLOCK(<c_hash_mutex); return x; } } LTC_MUTEX_UNLOCK(<c_hash_mutex); return -1; } /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */