FULL PRODUCT VERSION :


A DESCRIPTION OF THE PROBLEM :
public boolean isX509Certificate(byte[] data)
  {
    try {
      CertificateFactory.getInstance("X.509").generateCertificate(new ByteArrayInputStream(data));
      return true;
    }
    catch (CertificateException e) {
      return false;
    }
 }

java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Input byte array has wrong 4-byte ending unit
java.lang.IllegalArgumentException: Input byte array has wrong 4-byte ending unit
at java.util.Base64$Decoder.decode0(Base64.java:704)
at java.util.Base64$Decoder.decode(Base64.java:526)
at java.util.Base64$Decoder.decode(Base64.java:549)
at sun.security.provider.X509Factory.readOneBlock(X509Factory.java:636)
at sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:94)
at java.security.cert.CertificateFactory.generateCertificate(CertificateFactory.java:339)
at com.kyriba.technical.shared.internal.services.crypto.CryptoTypeDetector.isX509Certificate(CryptoTypeDetector.java:78)

REGRESSION. Last worked in version 7u79

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Use the following method
public boolean isX509Certificate(byte[] data)
  {
    try {
      CertificateFactory.getInstance("X.509").generateCertificate(new ByteArrayInputStream(data));
      return true;
    }
    catch (CertificateException e) {
      return false;
    }
 }

2. Pass non-X509 certificate to this method.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
generateCertificate throws CertificateException according to javadoc (@exception CertificateException on parsing errors)
ACTUAL -
generateCertificate throws IllegalArgumentException



ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Input byte array has wrong 4-byte ending unit
java.lang.IllegalArgumentException: Input byte array has wrong 4-byte ending unit
at java.util.Base64$Decoder.decode0(Base64.java:704)
at java.util.Base64$Decoder.decode(Base64.java:526)
at java.util.Base64$Decoder.decode(Base64.java:549)
at sun.security.provider.X509Factory.readOneBlock(X509Factory.java:636)
at sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:94)
at java.security.cert.CertificateFactory.generateCertificate(CertificateFactory.java:339)
at com.kyriba.technical.shared.internal.services.crypto.CryptoTypeDetector.isX509Certificate(CryptoTypeDetector.java:78)

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
public boolean isX509Certificate(byte[] data)
  {
    try {
      CertificateFactory.getInstance("X.509").generateCertificate(new ByteArrayInputStream(data));
      return true;
    }
    catch (CertificateException | IllegalArgumentException e) {
      return false;
    }
 }