Mercurial > dropbear
diff ocb_ntz.c @ 3:7faae8f46238 libtomcrypt-orig
Branch renaming
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 31 May 2004 18:25:41 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ocb_ntz.c Mon May 31 18:25:41 2004 +0000 @@ -0,0 +1,29 @@ +/* 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. + * + * Tom St Denis, [email protected], http://libtomcrypt.org + */ + +/* OCB Implementation by Tom St Denis */ +#include "mycrypt.h" + +#ifdef OCB_MODE + +int ocb_ntz(unsigned long x) +{ + int c; + x &= 0xFFFFFFFFUL; + c = 0; + while ((x & 1) == 0) { + ++c; + x >>= 1; + } + return c; +} + +#endif