INSANEMODE/OpenAssetTools
1
0
Fork 0
mirror of https://github.com/Laupetin/OpenAssetTools.git synced 2025-06-10 06:49:28 -05:00
Code Issues Packages Projects Releases Wiki Activity

Import code from previous AssetBuilder version

Browse Source
This commit is contained in:
Jan
2019-09-24 10:45:09 +02:00
parent 5609557516
commit 0d8432d4f7
919 changed files with 154412 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

46
thirdparty/libtomcrypt/encauth/chachapoly/chacha20poly1305_done.c vendored Normal file
View File

@ -0,0 +1,46 @@
/* 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"
#ifdef LTC_CHACHA20POLY1305_MODE
/**
Terminate a ChaCha20Poly1305 stream
@param st The ChaCha20Poly1305 state
@param tag [out] The destination for the MAC tag
@param taglen [in/out] The length of the MAC tag
@return CRYPT_OK on success
*/
int chacha20poly1305_done(chacha20poly1305_state *st, unsigned char *tag, unsigned long *taglen)
{
unsigned char padzero[16] = { 0 };
unsigned long padlen;
unsigned char buf[16];
int err;
LTC_ARGCHK(st != NULL);
padlen = 16 - (unsigned long)(st->ctlen % 16);
if (padlen < 16) {
if ((err = poly1305_process(&st->poly, padzero, padlen)) != CRYPT_OK) return err;
}
STORE64L(st->aadlen, buf);
STORE64L(st->ctlen, buf + 8);
if ((err = poly1305_process(&st->poly, buf, 16)) != CRYPT_OK) return err;
if ((err = poly1305_done(&st->poly, tag, taglen)) != CRYPT_OK) return err;
if ((err = chacha_done(&st->chacha)) != CRYPT_OK) return err;
return CRYPT_OK;
}
#endif
/* ref: HEAD -> master, tag: v1.18.2 */
/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
/* commit time: 2018-07-01 22:49:01 +0200 */