mirror of
https://github.com/PowerShell/Win32-OpenSSH.git
synced 2025-11-04 05:33:55 +01:00
50 lines
668 B
C
50 lines
668 B
C
/* $OpenBSD: verify.c,v 1.3 2013/12/09 11:03:45 markus Exp $ */
|
|
|
|
/*
|
|
* Public Domain, Author: Daniel J. Bernstein
|
|
* Copied from nacl-20110221/crypto_verify/32/ref/verify.c
|
|
*/
|
|
|
|
#include "includes.h"
|
|
|
|
#include "crypto_api.h"
|
|
|
|
int crypto_verify_32(const unsigned char *x,const unsigned char *y)
|
|
{
|
|
unsigned int differentbits = 0;
|
|
#define F(i) differentbits |= x[i] ^ y[i];
|
|
F(0)
|
|
F(1)
|
|
F(2)
|
|
F(3)
|
|
F(4)
|
|
F(5)
|
|
F(6)
|
|
F(7)
|
|
F(8)
|
|
F(9)
|
|
F(10)
|
|
F(11)
|
|
F(12)
|
|
F(13)
|
|
F(14)
|
|
F(15)
|
|
F(16)
|
|
F(17)
|
|
F(18)
|
|
F(19)
|
|
F(20)
|
|
F(21)
|
|
F(22)
|
|
F(23)
|
|
F(24)
|
|
F(25)
|
|
F(26)
|
|
F(27)
|
|
F(28)
|
|
F(29)
|
|
F(30)
|
|
F(31)
|
|
return (1 & ((differentbits - 1) >> 8)) - 1;
|
|
}
|