10564b1175
groff 1.23.0 added .MR to its -man macro package. The NEWS file states
that the inclusion of the macro "was prompted by its introduction to
Plan 9 from User Space's troff in August 2020." From d32deab it seems
that the name for Plan 9 from User Space's implementation was suggested
by groff maintainer G. Brandon Robinson.
Not sure if the intention was to make these definitions compatible, but
it would be nice if they were.
Currently, Plan 9 from User Space's .MR expects its second argument to
be parenthesized. groff's .MR does not. This results in extra
parentheses appearing in manual references when viewing Plan 9 from User
Space's manual pages on a system using groff.
53 lines
1.2 KiB
Groff
53 lines
1.2 KiB
Groff
.TH BLOWFISH 3
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.SH NAME
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setupBFstate, bfCBCencrypt, bfCBCdecrypt, bfECBencrypt, bfECBdecrypt - blowfish encryption
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.SH SYNOPSIS
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.B #include <u.h>
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.br
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.B #include <libc.h>
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.br
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.B #include <mp.h>
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.br
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.B #include <libsec.h>
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.PP
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.B
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void setupBFstate(BFstate *s, uchar key[], int keybytes,
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.B
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uchar *ivec)
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.PP
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.B
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void bfCBCencrypt(uchar *data, int len, BFstate *s)
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.PP
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.B
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void bfCBCdecrypt(uchar *data, int len, BFstate *s)
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.PP
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.B
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void bfECBencrypt(uchar *data, int len, BFstate *s)
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.PP
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.B
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void bfECBdecrypt(uchar *data, int len, BFstate *s)
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.SH DESCRIPTION
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.PP
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Blowfish is Bruce Schneier's symmetric block cipher. It supports
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variable length keys from 32 to 448 bits and has a block size of 64
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bits. Both CBC and ECB modes are supported.
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.PP
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setupBFstate takes a BFstate structure, a key of at most 56 bytes, the
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length of the key in bytes, and an initialization vector of 8 bytes
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(set to all zeroes if argument is nil). The encryption and decryption
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functions take a BFstate structure, a data buffer, and a length, which
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must be a multiple of eight bytes as padding is currently unsupported.
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.SH SOURCE
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.B \*9/src/libsec
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.SH SEE ALSO
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.MR mp 3 ,
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.MR aes 3 ,
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.MR des 3 ,
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.MR dsa 3 ,
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.MR elgamal 3 ,
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.MR rc4 3 ,
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.MR rsa 3 ,
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.MR sechash 3 ,
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.MR prime 3 ,
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.MR rand 3
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