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 .IR mp (3),
44 .IR aes (3),
45 .IR des (3),
46 .IR dsa (3),
47 .IR elgamal (3),
48 .IR rc4 (3),
49 .IR rsa (3),
50 .IR sechash (3),
51 .IR prime (3),
52 .IR rand (3)