53 lines
1.3 KiB
Plaintext
53 lines
1.3 KiB
Plaintext
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.TH BLOWFISH 2
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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 /sys/src/libsec
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.SH SEE ALSO
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.IR mp (2),
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.IR aes (2),
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.IR des (2),
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.IR dsa (2),
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.IR elgamal (2),
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.IR rc4 (2),
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.IR rsa (2),
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.IR sechash (2),
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.IR prime (2),
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.IR rand (2)
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