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/*
** Copyright 2005 Double Precision, Inc.
** See COPYING for distribution information.
*/
#include "sha1.h"
#include <string.h>
static const char base64tab[]=
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const char *sha256_hash(const char *passw)
{
SHA256_DIGEST sha256buf;
static char hash_buffer[1+(sizeof(sha256buf)+2)/3*4];
int a=0,b=0,c=0;
int i, j;
int d, e, f, g;
sha256_digest(passw, strlen(passw), sha256buf);
j=0;
for (i=0; i<sizeof(sha256buf); i += 3)
{
a=sha256buf[i];
b= i+1 < sizeof(sha256buf) ? sha256buf[i+1]:0;
c= i+2 < sizeof(sha256buf) ? sha256buf[i+2]:0;
d=base64tab[ a >> 2 ];
e=base64tab[ ((a & 3 ) << 4) | (b >> 4)];
f=base64tab[ ((b & 15) << 2) | (c >> 6)];
g=base64tab[ c & 63 ];
if (i + 1 >= sizeof(sha256buf)) f='=';
if (i + 2 >= sizeof(sha256buf)) g='=';
hash_buffer[j++]=d;
hash_buffer[j++]=e;
hash_buffer[j++]=f;
hash_buffer[j++]=g;
}
hash_buffer[j]=0;
return (hash_buffer);
}
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