Commit | Line | Data |
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8d138742 CE |
1 | /* |
2 | ** Copyright 2008 Double Precision, Inc. | |
3 | ** See COPYING for distribution information. | |
4 | */ | |
5 | ||
6 | #include "sha1.h" | |
7 | #include <string.h> | |
8 | ||
8d138742 CE |
9 | |
10 | static const char base64tab[]= | |
11 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; | |
12 | ||
13 | const char *sha512_hash(const char *passw) | |
14 | { | |
15 | SHA512_DIGEST sha512buf; | |
16 | static char hash_buffer[1+(sizeof(sha512buf)+2)/3*4]; | |
17 | int a=0,b=0,c=0; | |
18 | int i, j; | |
19 | int d, e, f, g; | |
20 | ||
21 | sha512_digest(passw, strlen(passw), sha512buf); | |
22 | ||
23 | j=0; | |
24 | ||
25 | for (i=0; i<sizeof(sha512buf); i += 3) | |
26 | { | |
27 | a=sha512buf[i]; | |
28 | b= i+1 < sizeof(sha512buf) ? sha512buf[i+1]:0; | |
29 | c= i+2 < sizeof(sha512buf) ? sha512buf[i+2]:0; | |
30 | ||
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(sha512buf)) f='='; | |
36 | if (i + 2 >= sizeof(sha512buf)) g='='; | |
37 | hash_buffer[j++]=d; | |
38 | hash_buffer[j++]=e; | |
39 | hash_buffer[j++]=f; | |
40 | hash_buffer[j++]=g; | |
41 | } | |
42 | ||
43 | hash_buffer[j]=0; | |
44 | return (hash_buffer); | |
45 | } |