Generating a Test Certi cate in Java

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Generating a Test Certi cate
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To generate a test certi cate, do the following: 1 Exit from Netscape Navigator if it is running 2 Make a backup copy of the key3db and cert7db les, which are located in your Netscape user s directory (the Program Files\Netscape\Users\ <username> directory in Windows and the ~/netscape directory in UNIX) 3 Set up a password for the key and certi cate databases, if you have not already done so When you run signtool, you will be prompted to enter
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this password To set up a password, choose the Communicator/Tools/ Security Info menu item, and click the Passwords link on the left Follow the directions in this dialog box to set your password 4 Run the signtool command with the -G <name of certificate> and -d <location of key and certificate databases> options When prompted, enter the appropriate information for your object-signing certi cate The following is an example of running signtool The information you need to enter is highlighted in bold
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D:\>signtool -G TestCertificate -d "D:\Program Files\Netscape\Users\myusername" using certificate directory: D:\Program Files\Netscape\Users\myusername Enter certificate information All fields are optional Acceptable characters are numbers, letters, spaces, and apostrophes certificate common name: Object Signing Certificate for Testing organization: My Company organization unit: My Division state or province: California country (must be exactly 2 characters): US username: myusername email address: myemail@mydomaincom Enter Password or Pin for "Communicator Certificate DB": My Password generated public/private key pair certificate request generated certificate has been signed certificate "TestCertificate" added to database Exported certificate to x509raw and x509cacert
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Running signtool generates a test certi cate for object signing This test certi cate is self-signed Although most certi cates are signed by a separate certi cate authority, this test certi cate serves as its own certi cate authority and signs its own certi cate If you start Netscape Navigator, choose Communicator/Tools/Security Info and click the Signers link on the left The new certi cate should be listed as a certi cate authority, as in Figure 8-6 A self-signed certi cate cannot be used in a production environment, because clients will not be able to verify the issuer
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Signing Your Code
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Now that you have an object-signing certi cate, you can use Netscape Signing Tool (signtool) to sign your code and package everything in a JAR le
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FIGURE 8-6 Listing a test certi cate in Navigator
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Use the following syntax for the signtool executable:
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signtool -d <cert_dir> -k <cert_name> -Z <jar_file> <code_dir>
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where <cert_dir> speci es the location of your certi cate database and your key database For example, in Windows NT this is typically C:\Program Files\ Netscape\Users\<yourname> <cert_name> speci es the object-signing certi cate <jar_file> speci es the JAR le you want to create <code_dir> speci es the directory that contains the code les you want to sign The following example demonstrates how to sign your code The example uses the TestCerti cate certi cate to sign the LDAPAppletclass le, which is located in
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the D:\sourcefiles\codefiles directory The example also creates a JAR le named LDAPAppletjar The example expects to nd the certi cate and key databases in the D:\Program Files\Netscape\Users\myname directory The information you need to enter is highlighted in bold
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D:\sourcefiles>signtool -d "D:\Program Files\Netscape\Users\myname" -k TestCertificate -Z LDAPAppletjar codefiles using key "TestCertificate" using certificate directory: D:\Program Files\Netscape\Users\myname Generating codefiles/META-INF/manifestmf file > LDAPAppletclass adding codefiles/LDAPAppletclass to LDAPAppletjar(deflated 44%) Generating zigbertsf file Enter Password or Pin for "Communicator Certificate DB": MyPassword adding codefiles/META-INF/manifestmf to LDAPAppletjar(deflated 15%) adding codefiles/META-INF/zigbertsf to LDAPAppletjar(deflated 27%) adding codefiles/META-INF/zigbertrsa to LDAPAppletjar(deflated 45%) tree "codefiles" signed successfully
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In this example, signtool generates the following les in the directory META-INF: A manifest le (manifestmf) A signature instruction le (zigbertsf) A digital signature le (zigbertrsa) The manifest le contains a list of les to be signed For each le, the manifest le lists the le name and the message digests of the le (using MD5 and SHA1):
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Manifest-Version: 10 Created-By: Signtool (signtool 10) Comments: PLEASE DO NOT EDIT THIS FILE YOU WILL BREAK IT Name: DirBrowser$1class Digest-Algorithms: MD5 SHA1 MD5-Digest: PYjS+BxHowayyFXC2zneEQ== SHA1-Digest: 0NEKcktsn9HZelX/GF6dCHQ7quQ= Name: DirBrowser$2class Digest-Algorithms: MD5 SHA1 MD5-Digest: O9bVKN4s1XZv61YXvUD6Tg== SHA1-Digest: j7b3+ueHUvC6huTVr9JelRELDU8= Name: DirBrowserclass Digest-Algorithms: MD5 SHA1
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