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.\" Copyright (c) 1999 Kungliga Tekniska Högskolan
.\" (Royal Institute of Technology, Stockholm, Sweden).
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" 3. Neither the name of the Institute nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $Id: krb5_encrypt.3,v 1.7 2003/04/16 13:58:15 lha Exp $
.\"
.Dd April 7, 1999
.Dt KRB5_ENCRYPT 3
.Os HEIMDAL
.Sh NAME
.Nm krb5_decrypt ,
.Nm krb5_decrypt_EncryptedData ,
.Nm krb5_encrypt ,
.Nm krb5_encrypt_EncryptedData
.Nd encrypt and decrypt data
.Sh LIBRARY
Kerberos 5 Library (libkrb5, -lkrb5)
.Sh SYNOPSIS
.In krb5.h
.Ft krb5_error_code
.Fn krb5_encrypt "krb5_context context" "krb5_crypto crypto" "unsigned usage" "void *data" "size_t len" "krb5_data *result"
.Ft krb5_error_code
.Fn krb5_encrypt_EncryptedData "krb5_context context" "krb5_crypto crypto" "unsigned usage" "void *data" "size_t len" "int kvno" "EncryptedData *result"
.Ft krb5_error_code
.Fn krb5_decrypt "krb5_context context" "krb5_crypto crypto" "unsigned usage" "void *data" "size_t len" "krb5_data *result"
.Ft krb5_error_code
.Fn krb5_decrypt_EncryptedData "krb5_context context" "krb5_crypto crypto" "unsigned usage" "EncryptedData *e" "krb5_data *result"
.Sh DESCRIPTION
These functions are used to encrypt and decrypt data.
.Pp
.Fn krb5_encrypt
puts the encrypted version of
.Fa data
(of size
.Fa len )
in
.Fa result .
If the encryption type supports using derived keys,
.Fa usage
should be the appropriate key-usage.
.Fn krb5_encrypt_EncryptedData
does the same as
.Fn krb5_encrypt ,
but it puts the encrypted data in a
.Fa EncryptedData
structure instead. If
.Fa kvno
is not zero, it will be put in the
.Fa kvno field in the
.Fa EncryptedData .
.Pp
.Fn krb5_decrypt ,
and
.Fn krb5_decrypt_EncryptedData
works similarly.
.\" .Sh EXAMPLE
.\" .Sh BUGS
.Sh SEE ALSO
.Xr krb5_create_checksum 3 ,
.Xr krb5_crypto_init 3
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