freebsd-dev/share/man/man9/rijndael.9
Jens Schweikhardt 341229f512 Typo: s/dependant/dependent/
MFC after:	3 days
2002-03-16 18:12:49 +00:00

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.\"
.\" Copyright (c) 2002
.\" Mark R V Murray. All rights reserved.
.\"
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.Dd February 6, 2002
.Os
.Dt RIJNDAEL 9
.Sh NAME
.Nm rijndael_makeKey ,
.Nm rijndael_cipherInit ,
.Nm rijndael_blockEncrypt ,
.Nm rijndael_padEncrypt ,
.Nm rijndael_blockDecrypt ,
.Nm rijndael_padDecrypt
.Nd AES encryption.
.Sh SYNOPSIS
.Fd #include <crypto/rijndael/rijndael.h>
.Ft int
.Fo rijndael_makeKey
.Fa "keyInstance *key"
.Fa "u_int8_t direction"
.Fa "int keyLen"
.Fa "char *keyMaterial"
.Fc
.Ft int
.Fo rijndael_cipherInit
.Fa "cipherInstance *cipher"
.Fa "u_int8_t mode"
.Fa "char *IV"
.Fc
.Ft int
.Fo rijndael_blockEncrypt
.Fa "cipherInstance *cipher"
.Fa "keyInstance *key"
.Fa "u_int8_t *input"
.Fa "int inputLen"
.Fa "u_int8_t *outBuffer"
.Fc
.Ft int
.Fo rijndael_padEncrypt
.Fa "cipherInstance *cipher"
.Fa "keyInstance *key"
.Fa "u_int8_t *input"
.Fa "int inputOctets"
.Fa "u_int8_t *outBuffer"
.Fc
.Ft int
.Fo rijndael_blockDecrypt
.Fa "cipherInstance *cipher"
.Fa "keyInstance *key"
.Fa "u_int8_t *input"
.Fa "int inputLen"
.Fa "u_int8_t *outBuffer"
.Fc
.Ft int
.Fo rijndael_padDecrypt
.Fa "cipherInstance *cipher"
.Fa "keyInstance *key"
.Fa "u_int8_t *input"
.Fa "int inputOctets"
.Fa "u_int8_t *outBuffer"
.Fc
.Sh DESCRIPTION
The
.Nm rijndael_makeKey
function is used to set up the key schedule in
.Ar key .
The
.Ar direction
(which may be
.Dv DIR_ENCRYPT
or
.Dv DIR_DECRYPT )
specifies the intended use of the key.
The length of the key (in bits) is given in
.Ar keyLen ,
and must be 128, 192 or 256.
The actual key is supplied in the buffer pointed to by
.Ar keyMaterial .
This material may be raw binary data,
or an ascii string containing a hexadecimal rendition
of the raw binary data,
dependent on a compile-time option in the
.Nm
sources -
.Dv BINARY_KEY_MATERIAL .
.Pp
.Sh RETURN VALUES
The
.Nm rijndael_makeKey
function will return
.Dv BAD_KEY_INSTANCE
if a null
.Ar key
is passed,
.Dv BAD_KEY_DIR
if
.Ar direction
is not
.Dv DIR_ENCRYPT
or
.Dv DIR_DECRYPT ,
.Dv BAD_KEY_MAT
if the key materials are not a hexadecimal string
(and binary keys are not set),
and
.Dv TRUE
otherwise.
.Pp
.Sh AUTHOR
.An Mark R V Murray .