Mercurial > dropbear
view libtomcrypt/src/mac/pmac/pmac_shift_xor.c @ 1772:0cc85b4a4abb
Move fuzzer-kex initialisation into a constructor function
Hopefully this can avoid hitting AFL timeouts
https://github.com/google/oss-fuzz/pull/2474
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Thu, 29 Oct 2020 23:00:52 +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 pmac_shift_xor.c PMAC implementation, internal function, by Tom St Denis */ #ifdef LTC_PMAC /** Internal function. Performs the state update (adding correct multiple) @param pmac The PMAC state. */ void pmac_shift_xor(pmac_state *pmac) { int x, y; y = pmac_ntz(pmac->block_index++); #ifdef LTC_FAST for (x = 0; x < pmac->block_len; x += sizeof(LTC_FAST_TYPE)) { *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)pmac->Li + x)) ^= *(LTC_FAST_TYPE_PTR_CAST((unsigned char *)pmac->Ls[y] + x)); } #else for (x = 0; x < pmac->block_len; x++) { pmac->Li[x] ^= pmac->Ls[y][x]; } #endif } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */