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.\" Copyright 2002 walter harms (walter.harms@informatik.uni-oldenburg.de)
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.\"
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.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
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.\" Distributed under GPL
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.\" %%%LICENSE_END
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.\"
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.\" I had no way the check the functions out
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.\" be careful
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.TH KEY_SETSECRET 3 2017-09-15 "" "Linux Programmer's Manual"
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.SH NAME
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key_decryptsession, key_encryptsession, key_setsecret, key_gendes,
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key_secretkey_is_set \- interfaces to rpc keyserver daemon
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.SH SYNOPSIS
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.B "#include <rpc/rpc.h>"
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.PP
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.BI "int key_decryptsession(char *" remotename ,
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.BI "des_block *" deskey );
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.PP
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.BI "int key_encryptsession(char *" remotename ,
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.BI "des_block *" deskey );
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.PP
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.BI "int key_gendes(des_block *" deskey );
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.PP
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.BI "int key_setsecret(char *" key );
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.PP
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.B "int key_secretkey_is_set(void);"
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.SH DESCRIPTION
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The functions here are used within the RPC's secure authentication
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mechanism (AUTH_DES).
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There should be no need for user programs to
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use this functions.
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.PP
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The function
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.BR key_decryptsession ()
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uses the (remote) server netname and takes the DES key
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for decrypting.
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It uses the public key of the server and the
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secret key associated with the effective UID of the calling process.
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.PP
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The function
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.BR key_encryptsession ()
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is the inverse of
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.BR key_decryptsession ().
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It encrypts the DES keys with the public key of the server and
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the secret key associated with the effective UID of the calling process.
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.PP
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The function
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.BR key_gendes ()
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is used to ask the keyserver for a secure conversation key.
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.PP
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The function
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.BR key_setsecret ()
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is used to set the key for the effective UID of the calling process.
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.PP
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The function
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.BR key_secretkey_is_set ()
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can be used to determine whether a key has been
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set for the effective UID of the calling process.
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.SH RETURN VALUE
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These functions return 1 on success and 0 on failure.
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.SH ATTRIBUTES
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For an explanation of the terms used in this section, see
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.BR attributes (7).
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.TS
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allbox;
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lbw22 lb lb
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l l l.
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Interface Attribute Value
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T{
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.BR key_decryptsession (),
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.br
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.BR key_encryptsession (),
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.br
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.BR key_gendes (),
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.br
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.BR key_setsecret (),
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.br
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.BR key_secretkey_is_set ()
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T} Thread safety MT-Safe
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.TE
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.sp 1
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.SH NOTES
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Note that we talk about two types of encryption here.
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One is asymmetric using a public and secret key.
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The other is symmetric, the
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64-bit DES.
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.PP
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These routines were part of the Linux/Doors-project, abandoned by now.
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.SH SEE ALSO
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.BR crypt (3)
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.SH COLOPHON
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This page is part of release 4.15 of the Linux
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.I man-pages
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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\%https://www.kernel.org/doc/man\-pages/.
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