de.frame4j

Class PKextr

java.lang.Object

de.frame4j.util.App

de.frame4j.PKextr

All Implemented Interfaces:

AttrSettable, TextHelper.MessageComponents, AppMBean, ComVar, UIInfo, ActionListener, EventListener

@MinDoc(copyright="Copyright 2004 - 2009, 2016  A. Weinert",
        author="Albrecht Weinert",
        version="V.44",
        lastModified="6.05.2021",
        usage="start as Java application (-? for help)",
        purpose="extract keys from keystores or certificates")
public class PKextr
extends App

Determine / extract public key from keystore or certificate.

This Java application extracts a public key from a

• certificate (that will be a .cer file mostly)
  or from a
• so called keystore (mostly file based and mostly of type "jks" = java keystore).

A password question may be necessary. If so it will be done graphically using an AskDialog window. The user's password entry will not be visible / readable.

The public key's output will be in textual form (human readable) to the console and optionally to a (log) file (that is to App.log). Additionally a binary public key file may be output, from which the key can be read / regenerated by standard Java means.

Hint: To this application PKextr (source) belongs a .properties file PKextr.properties that may be considered as part of the documentation and may answer open questions. Get help by
java de.frame4j.PKextr -? [-en | -de ]

Hint 2: Provided one has the necessary privileges this application can also extract the private key. by e.g.
java de.frame4j.PKextr -exportPrivate -pkcs12 -ks leFile.jks alias


Copyright 2004 - 2008, 2016 Albrecht Weinert

See Also:

App

Nested Class Summary

Nested classes/interfaces inherited from interface de.frame4j.util.ComVar

ComVar.Impl

Field Summary

Fields

Modifier and Type	Field and Description
String	certFileName Name of input file (certificate or keystore).
String	certType Type of certificate / keystore.
boolean	exportPrivate Export the private instead of the public key.
boolean	fromCert Read from certificate not from keystore.
protected String	keyAlias Alias name for key from keystore.
protected String	pubKeyFil Output file for the public key.
String	storePassW Password for the keystore.
String	w0 Word parameter 1 and 2.
String	w1 Word parameter 1 and 2.

Fields inherited from class de.frame4j.util.App

ano, appBase, appIO, appStartTime, appStartTimeMS, args, argsOrig, bgColor, err, fullClassName, help, icon, log, mainThread, myClass, myFrame, name, out, outMode, packName, prop, retCode, runFlag, shortClassName, title, verbose, verbosity

Fields inherited from interface de.frame4j.util.ComVar

AUTHOR, BLANK_STRING, cons, CONSOL_ENCODING, COPYRIGHT, D, D_NaN, D_NegInf, D_PosInf, EMPTY_INT_A, EMPTY_STRING, FILE_ENCODING, FRW_CLLD, FS, FSS, H, hasCons, HOST_IP, HOST_IPv4, HOST_NAME, INIT_ERROR, JAR_ENCODING, JH, JOB_DONE_OK, JRL, LOG_OUT_ERROR, M, MAIN_THREAD_EXC, NO_BYTES, NO_CLASSES, NO_DOUBLES, NO_OBJECTS, NO_PARS_ERROR, NO_STRINGS, NOT_WINDOWS, ON_PI, ONE_DAY, ONE_HOUR, ONE_LEAP_YEAR, ONE_MINUTE, ONE_SECOND, ONE_WEEK, ONE_YEAR, OS, PROG_NAME, PROG_SHORT, PS, RUNTIME, S, SHY, UD, UL, UL_UR_da, UR

Fields inherited from interface de.frame4j.net.AttrSettable

ILLEGAL_TYPE, ILLEGAL_VALUE, NO_ATTRIBUTE, NO_KNOWN_ATTRIBUTE, NO_VALUE, OK, retVtext

Method Summary

Modifier and Type	Method and Description
int	doIt() Working method of PKextr.
static void	main(String[] args) Start method of PKextr.

Methods inherited from class de.frame4j.util.App

actionPerformed, allowNoPropertiesFile, clientOrder, condHelpLog, connect, errMeld, errMeld, errorExit, errorExit, errorText, extraPropertiesFile, formMessage, formMessage, formMessage, getAbout, getAboutText, getActTime, getAppLogger, getAppStartTime, getArgs, getAuthor, getCopyright, getDbLogger, getExecTimeMs, getExecTimeMsL, getExecTimeString, getHelp, getHelpText, getIcon, getLanguage, getLogHandler, getMessageComponent, getMessageComponentsLength, getMyFrame, getName, getNameWithVersDate, getOutMode, getProp, getPurpose, getStartTime, getStateString, getTheCloser, getTitle, getUsage, getVerbose, getVerbosity, getVersDate, go, go, go, haveIcon, isDebug, isHelp, isHelpLog, isNormal, isRunFlag, isSilent, isTest, isVerbose, logVerbose, logVerbose, makeStatusTextEnd, makeStatusTextStart, messageFormat, normalExit, parsePartial, performeAction, queueAction, regAsStdMBean, repExc, setAboutText, setAttribute, setAttribute, setAuthor, setBgColor, setCodePages, setCopyright, setHelp, setLogOut2, setName, setOutMode, setOutMode, setPurpose, setTitle, setUsage, setVerbose, setVerbose, setVerbosity, setVerbosity, setVersDate, stop, threeLineEndMsg, toString, twoLineEndMsg, twoLineStartMsg, valueLang, valueLang, wakeMainThread

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface de.frame4j.net.AttrSettable

retVtext

Field Detail

pubKeyFil

protected String pubKeyFil

Output file for the public key.

certType

public String certType

Type of certificate / keystore.

Allowed values for certificate: "X.509"
Allowed values for keystore: "JKS", "PKCS12"
default: "X.509"

fromCert

public boolean fromCert

Read from certificate not from keystore.

default: true

See Also:

certType

exportPrivate

public boolean exportPrivate

Export the private instead of the public key.

default: false

certFileName

public String certFileName

Name of input file (certificate or keystore).

default: null

storePassW

public String storePassW

Password for the keystore.

keyAlias

protected String keyAlias

Alias name for key from keystore.

w0

public String w0

Word parameter 1 and 2.

w1

public String w1

Word parameter 1 and 2.

Method Detail

main

public static void main(String[] args)

Start method of PKextr.

The application end with exit-code 0 on success. Exit-code > 0 means abort due to a problem.

Parameters:

args - command line parameter
Execute: PKextr [options]

doIt

public int doIt()

Working method of PKextr.

Specified by:

doIt in class App

Returns:

> 0: error; 0: OK

See Also:

Prop, App.go(String[]), App.go(String[], String, CharSequence), App.mainThread