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In the C programming language, variables are scoped to the code block in which they are declared and are only valid within that code block.
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gct-tool(1) [debian man page]

GCT-TOOL(1)															       GCT-TOOL(1)

gct-tool - Command line tool for manipulation of Gwenhywfar CryptTokens. SYNOPSIS
gct-tool [global options] <command> [command options] DESCRIPTION
The gct-tool command can be used for manipulation of Gwenhywfar CryptTokens. AqBanking uses such Gwenhywfar CryptTokens to handle the various authentication mechanisms (like chipcards or key files) in a unified fashion. OPTIONS
-C PARAM, --cfgfile=PARAM Specify the configuration file --forcepin force pin entry even if the error counter is not zero -h, --help Show this help screen COMMANDS
create This command creates a crypt token showuser Display user data stored on the token showkey Display key info stored on the token update Update Crypt Token to newer version (e.g. OpenHBCI keyfiles) setsignseq Set the signature sequence counter of a Gwenhywfar CryptToken. changepin Change the PIN of a Gwenhywfar CryptToken. For help on options available to specific commands, run gct-tool <COMMAND> --help. BUGS
Probably lots, please post them to the mailing list (see Resources below) when you find them. COPYING
Copyright (C) Martin PreuB. Free use of this software is granted under the terms of the Lesser GNU Public License (LGPL). The manpage was composed by Micha Lenk and converted by the nifty tool AsciiDoc into a manpage. AUTHOR
Micha Lenk <> Author. 05/10/2012 GCT-TOOL(1)

Check Out this Related Man Page

WESTCOS-TOOL(1) 						   OpenSC tools 						   WESTCOS-TOOL(1)

westcos-tool - utility for manipulating data structures on westcos smart cards SYNOPSIS
The westcos-tool utility is used to manipulate the westcos data structures on 2 Ko smart cards. Users can create PINs, keys and certificates stored on the token. User PIN authentication is performed for those operations that require it. OPTIONS
--reader, r num Use the given reader. The default is the first reader with a card. --wait, -w Wait for a card to be inserted --generate-key, -g Generate a private key on smart card. The smart card must be not finalized and a PIN must be installed (ie. file for PIN must be created, see option -i). By default key length is 1536 bits. User authentication is required for this operation. --overwrite-key, -o Overwrite the key if there is already a key on card. --key-length length, -l length Change the length of private key, use with -g. --install-pin, -i Install PIN file in token, you must provide PIN value with -x. --pin-value value, -x value set value of PIN. --puk-value value, -y value set value of PUK (or value of new PIN for change PIN command see -n). --change-pin, -n Changes a PIN stored on the token. User authentication is required for this operation. --unblock-pin, -u Unblocks a PIN stored on the token. Knowledge of the PIN Unblock Key (PUK) is required for this operation. --certificate file, -t file Write certificate file in PEM format to the card. User authentication is required for this operation. --finalize, -f Finalize the card. Once finalized the default key is invalidated so PIN and PUK can't be changed anymore without user authentication. Warning, un-finalized are insecure because PIN can be changed without user authentication (knowledge of default key is enough). --read-file path, -j path Get the file path the file is written on disk with path name. User authentication is required for this operation. --write-file path, -k path Put the file with name path from disk to card the file is written in path. User authentication is required for this operation. --help, -h Print help message on screen. -v Causes westcos-tool to be more verbose. Specify this flag several times to enable debug output in the OpenSC library. AUTHORS
westcos-tool was written by Francois Leblanc opensc 06/03/2012 WESTCOS-TOOL(1)

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