1 .TH BLOWFISH 3
2 .SH NAME
3 setupBFstate, bfCBCencrypt, bfCBCdecrypt, bfECBencrypt, bfECBdecrypt  - blowfish encryption
4 .SH SYNOPSIS
5 .B #include <u.h>
6 .br
7 .B #include <libc.h>
8 .br
9 .B #include <mp.h>
10 .br
11 .B #include <libsec.h>
12 .PP
13 .B
14 void setupBFstate(BFstate *s, uchar key[], int keybytes, 
15 .B
16 			 uchar *ivec)
17 .PP
18 .B
19 void bfCBCencrypt(uchar *data, int len, BFstate *s)
20 .PP
21 .B
22 void bfCBCdecrypt(uchar *data, int len, BFstate *s)
23 .PP
24 .B
25 void bfECBencrypt(uchar *data, int len, BFstate *s)
26 .PP
27 .B
28 void bfECBdecrypt(uchar *data, int len, BFstate *s)
29 .SH DESCRIPTION
30 .PP
31 Blowfish is Bruce Schneier's symmetric block cipher.  It supports
32 variable length keys from 32 to 448 bits and has a block size of 64
33 bits.  Both CBC and ECB modes are supported.
34 .PP
35 setupBFstate takes a BFstate structure, a key of at most 56 bytes, the
36 length of the key in bytes, and an initialization vector of 8 bytes
37 (set to all zeroes if argument is nil).  The encryption and decryption
38 functions take a BFstate structure, a data buffer, and a length, which
39 must be a multiple of eight bytes as padding is currently unsupported.
40 .SH SOURCE
41 .B \*9/src/libsec
42 .SH SEE ALSO
43 .MR mp (3) ,
44 .MR aes (3) ,
45 .MR des (3) ,
46 .MR dsa (3) ,
47 .MR elgamal (3) ,
48 .MR rc4 (3) ,
49 .MR rsa (3) ,
50 .MR sechash (3) ,
51 .MR prime (3) ,
52 .MR rand (3)