2 ** Copyright 2005 Double Precision, Inc.
3 ** See COPYING for distribution information.
10 static const char base64tab
[]=
11 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
13 const char *sha256_hash(const char *passw
)
15 SHA256_DIGEST sha256buf
;
16 static char hash_buffer
[1+(sizeof(sha256buf
)+2)/3*4];
21 sha256_digest(passw
, strlen(passw
), sha256buf
);
25 for (i
=0; i
<sizeof(sha256buf
); i
+= 3)
28 b
= i
+1 < sizeof(sha256buf
) ? sha256buf
[i
+1]:0;
29 c
= i
+2 < sizeof(sha256buf
) ? sha256buf
[i
+2]:0;
31 d
=base64tab
[ a
>> 2 ];
32 e
=base64tab
[ ((a
& 3 ) << 4) | (b
>> 4)];
33 f
=base64tab
[ ((b
& 15) << 2) | (c
>> 6)];
34 g
=base64tab
[ c
& 63 ];
35 if (i
+ 1 >= sizeof(sha256buf
)) f
='=';
36 if (i
+ 2 >= sizeof(sha256buf
)) g
='=';