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52 lines
997 B
Groff
52 lines
997 B
Groff
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.TH AES 3
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.SH NAME
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setupAESstate, aesCBCencrypt, aesCBCdecrypt - advanced encryption standard (rijndael)
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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 setupAESstate(AESstate *s, uchar key[], int keybytes, uchar *ivec)
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.PP
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.B
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void aesCBCencrypt(uchar*, int, AESstate*)
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.PP
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.B
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void aesCBCdecrypt(uchar*, int, AESstate*)
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.PP
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.SH DESCRIPTION
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.PP
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DES is being replaced by Rijndael, also known as AES, as the preferred
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block ciper.
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.IR setupAESstate ,
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.IR aesCBCencrypt ,
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and
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.I aesCBCdecrypt
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implement cipher block chaining encryption.
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.I Keybytes
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should be 16, 24, or 32.
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The initialization vector
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.I ivec
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of
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.I AESbsize
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bytes should random enough to be unlikely to be reused but does not need to be
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cryptographically strongly unpredictable.
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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 blowfish (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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