openssh/verify.c
Damien Miller 5be9d9e3cb - markus@cvs.openbsd.org 2013/12/06 13:39:49
[authfd.c authfile.c key.c key.h myproposal.h pathnames.h readconf.c]
     [servconf.c ssh-agent.c ssh-keygen.c ssh-keyscan.1 ssh-keyscan.c]
     [ssh-keysign.c ssh.c ssh_config.5 sshd.8 sshd.c verify.c ssh-ed25519.c]
     [sc25519.h sc25519.c hash.c ge25519_base.data ge25519.h ge25519.c]
     [fe25519.h fe25519.c ed25519.c crypto_api.h blocks.c]
     support ed25519 keys (hostkeys and user identities) using the public
     domain ed25519 reference code from SUPERCOP, see
     http://ed25519.cr.yp.to/software.html
     feedback, help & ok djm@
2013-12-07 11:24:01 +11:00

45 lines
559 B
C

/* $OpenBSD: */
/* Public Domain, from supercop-20130419/crypto_verify/32/ref/verify.c */
#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)
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return (1 & ((differentbits - 1) >> 8)) - 1;
}