IJ56745: AES-ECB MODE NOW THROWS EXCEPTION ON IV USE BASED ON SYSTEM PROPERTY

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  N/A
  

Local fix

• N/A
  

Problem summary

• When an IV was specified in AES/ECB mode, the system did not
  throw an exception, even though the JavaDoc indicated it should.
  This update introduces a configurable property to explicitly
  control this behavior, ensuring better alignment with expected
  cryptographic standards and documentation.
  

Problem conclusion

• A new system property, com.ibm.jce.ignoreIV, has been introduced
  for handling of Initialization Vectors (IV) when the AES
  algorithm is used in ECB mode. This property supports the
  following values:
  true: The IV will be silently ignored, and no exception will be
  thrown. This maintains the behaviour seen in earlier
  implementations.
  false (default): The implementation throws an
  InvalidAlgorithmParameterException with the message "ECB mode
  cannot use IV" if an IV is passed.
  IBMJCE, IBMJCEPlus(140-2) and IBMJCEPlus(140-3) has been updated
  to fix the issue.
  A fix is made to: ibmjceprovider.jar, ibmjceplus.jar(140-2),
  ibmjceplus.jar(140-3)
  RTC Problem Report is : 153145
  GIT issue is: IBMJCE#333, IBMJCEPlus(140-2)#907 and
  IBMJCEPlus(140-3)#906
  JVMs affected: Java 8.0
  The fix was delivered for: Java 8 SR8 FP60
  The affected jars: ?ibmjceprovider.jar?,
  "ibmjceplus.jar"(140-2), "ibmjceplus.jar"(140-3)
  .
  This APAR will be fixed in the following Releases:
  .
  IBM Semeru Runtimes
  IBM SDK, Java Technology Edition
     8    SR8 FP60  (8.0.8.60)
  .
  Downloads and supplementary documentation can be found at the
  following locations:
  - For non z/OS operating systems:
    - IBM Semeru Runtimes, Version 11 and later
      https://www.ibm.com/semeru-runtimes/downloads/
    - IBM SDK, Java Technology Edition, Version 8
      https://www.ibm.com/support/pages/java-sdk-downloads/
  - For the z/OS operating system:
    - Java SDK Products on z/OS
      https://www.ibm.com/support/pages/java-sdk-products-zos
  

Temporary fix

• N/A
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  SECURITY

• Fixed component ID

  620700125

Applicable component levels