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/**
* @ test
* @ bug 6890872 8168882 8257722
* @ summary keytool - printcert to recognize signed jar files
* @ library / test / lib
* @ build jdk . test . lib . SecurityTools
* jdk . test . lib . util . JarUtils
* jdk . test . lib . Utils
* jdk . test . lib . Asserts
* jdk . test . lib . JDKToolFinder
* jdk . test . lib . JDKToolLauncher
* jdk . test . lib . Platform
* jdk . test . lib . process . *
* @ run main ReadJar
*/
import java.nio.file.Files;
import java.nio.file.Paths;
import jdk.test.lib.SecurityTools;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.util.JarUtils;
import java.nio.file.Path;
public class ReadJar {
static OutputAnalyzer kt(String cmd, String ks) throws Exception {
return SecurityTools.keytool("-storepass changeit " + cmd +
" -keystore " + ks);
}
static void gencert(String owner, String cmd) throws Exception {
kt("-certreq -alias " + owner + " -file tmp.req" , "ks" );
kt("-gencert -infile tmp.req -outfile tmp.cert " + cmd, "ks" );
kt("-importcert -alias " + owner + " -file tmp.cert" , "ks" );
}
public static void main(String[] args) throws Throwable {
testWithMD5();
testCertOutput();
}
// make sure that -printcert option works
// if a weak algorithm was used for signing a jar
private static void testWithMD5() throws Throwable {
// create jar files
JarUtils.createJar("test_md5.jar" , "test" );
JarUtils.createJar("test_rsa.jar" , "test" );
// create a keystore and generate keys for jar signing
Files.deleteIfExists(Paths.get("keystore" ));
OutputAnalyzer out = SecurityTools.keytool("-genkeypair "
+ "-keystore keystore -storepass password "
+ "-keypass password -keyalg rsa -alias rsa_alias -dname CN=A" );
System.out.println(out.getOutput());
out.shouldHaveExitValue(0 );
out = SecurityTools.jarsigner("-keystore keystore -storepass password "
+ "test_rsa.jar rsa_alias" );
System.out.println(out.getOutput());
out.shouldHaveExitValue(0 );
printCert("test_rsa.jar" );
out = SecurityTools.jarsigner("-keystore keystore -storepass password "
+ "-sigalg MD5withRSA -digestalg MD5 test_md5.jar rsa_alias" );
System.out.println(out.getOutput());
out.shouldHaveExitValue(0 );
printCert("test_md5.jar" );
}
private static void printCert(String jar) throws Throwable {
OutputAnalyzer out = SecurityTools.keytool("-printcert -jarfile " + jar);
System.out.println(out.getOutput());
out.shouldHaveExitValue(0 );
out.shouldNotContain("Not a signed jar file" );
out = SecurityTools.keytool("-printcert -rfc -jarfile " + jar);
System.out.println(out.getOutput());
out.shouldHaveExitValue(0 );
out.shouldNotContain("Not a signed jar file" );
}
private static void testCertOutput() throws Throwable {
kt("-genkeypair -keyalg rsa -alias e0 -dname CN=E0 " +
"-keysize 512" , "ks" );
JarUtils.createJarFile(Path.of("a0.jar" ), Path.of("." ), Path.of("ks" ));
// sign a0.jar file
SecurityTools.jarsigner("-keystore ks -storepass changeit " +
" a0.jar e0" )
.shouldHaveExitValue(0 );
SecurityTools.keytool("-printcert -jarfile a0.jar" )
.shouldNotContain("Signature:" )
.shouldContain("Signer #1:" )
.shouldContain("Certificate #1:" )
.shouldNotContain("Certificate #2:" )
.shouldNotContain("Signer #2:" )
.shouldMatch("The certificate uses a 512-bit RSA key.*is disabled" )
.shouldHaveExitValue(0 );
kt("-genkeypair -keyalg rsa -alias ca1 -dname CN=CA1 -ext bc:c " +
"-keysize 512" , "ks" );
kt("-genkeypair -keyalg rsa -alias e1 -dname CN=E1" , "ks" );
gencert("e1" , "-alias ca1 -ext san=dns:e1" );
JarUtils.createJarFile(Path.of("a1.jar" ), Path.of("." ), Path.of("ks" ));
// sign a1.jar file
SecurityTools.jarsigner("-keystore ks -storepass changeit " +
" a1.jar e1" )
.shouldHaveExitValue(0 );
SecurityTools.keytool("-printcert -jarfile a1.jar" )
.shouldNotContain("Signature:" )
.shouldContain("Signer #1:" )
.shouldContain("Certificate #1:" )
.shouldContain("Certificate #2:" )
.shouldNotContain("Signer #2:" )
.shouldMatch("The certificate #2 uses a 512-bit RSA key.*is disabled" )
.shouldHaveExitValue(0 );
kt("-genkeypair -keyalg rsa -alias ca2 -dname CN=CA2 -ext bc:c " +
"-sigalg SHA1withRSA" , "ks" );
kt("-genkeypair -keyalg rsa -alias e2 -dname CN=E2" , "ks" );
gencert("e2" , "-alias ca2 -ext san=dns:e2" );
// sign a1.jar file again with different signer
SecurityTools.jarsigner("-keystore ks -storepass changeit " +
" a1.jar e2" )
.shouldHaveExitValue(0 );
SecurityTools.keytool("-printcert -jarfile a1.jar" )
.shouldNotContain("Signature:" )
.shouldContain("Signer #1:" )
.shouldContain("Certificate #1:" )
.shouldContain("Certificate #2:" )
.shouldContain("Signer #2:" )
.shouldMatch("The certificate #.* of signer #.*" + "uses the SHA1withRSA.*considered a security risk" )
.shouldMatch("The certificate #.* of signer #.*" + "uses a 512-bit RSA key.*is disabled" )
.shouldHaveExitValue(0 );
kt("-genkeypair -keyalg rsa -alias e3 -dname CN=E3" ,
"ks" );
JarUtils.createJarFile(Path.of("a2.jar" ), Path.of("." ), Path.of("ks" ));
// sign a2.jar file
SecurityTools.jarsigner("-keystore ks -storepass changeit " +
" a2.jar e3" )
.shouldHaveExitValue(0 );
kt("-genkeypair -keyalg rsa -alias e4 -dname CN=E4 " +
"-keysize 1024" , "ks" );
// sign a2.jar file again with different signer
SecurityTools.jarsigner("-keystore ks -storepass changeit " +
" a2.jar e4" )
.shouldHaveExitValue(0 );
SecurityTools.keytool("-printcert -jarfile a2.jar" )
.shouldNotContain("Signature:" )
.shouldContain("Signer #1:" )
.shouldContain("Certificate #1:" )
.shouldNotContain("Certificate #2:" )
.shouldContain("Signer #2:" )
.shouldMatch("The certificate of signer #.*" + "uses a 1024-bit RSA key.*will be disabled" )
.shouldHaveExitValue(0 );
}
}
Messung V0.5 in Prozent C=95 H=60 G=79
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
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