IJ56875: USING TLS PQC HYBRID KEY AGREEMENT IN MULTI-THREADED ENVIRONMENT MAY THROW AN AEADBADTAGEXCEPTION: ICC_AES_GCM_EN/DECRYPTFINAL

APAR status

• Closed as program error.

Error description

• Error Message: javax.crypto.AEADBadTagException:
  ICC_AES_GCM_En/DecryptFinal failed
  .
  Stack Trace: javax.net.ssl.SSLException:
  javax.crypto.AEADBadTagException: ICC_AES_GCM_En/DecryptFinal
  failed
   at com.ibm.jsse2.f.a(f.java:52)
   at com.ibm.jsse2.bf.a(bf.java:49)
   at com.ibm.jsse2.bf.a(bf.java:161)
   at com.ibm.jsse2.bf.a(bf.java:153)
   at com.ibm.jsse2.a4.a(a4.java:47)
   at com.ibm.jsse2.bo.b(bo.java:241)
   at com.ibm.jsse2.bo.f(bo.java:491)
   at com.ibm.jsse2.bo.a(bo.java:132)
   at com.ibm.jsse2.bo.startHandshake(bo.java:539)
   at
  com.ibm.net.ssl.www2.protocol.https.c.afterConnect(c.java:160)
   at
  com.ibm.net.ssl.www2.protocol.https.d.connect(d.java:63)
   at
  com.ibm.net.ssl.www2.protocol.https.b.connect(b.java:43)
  .
  

Local fix

• Apply any one of the following options.
   1. Disable the PQC hybrid key exchange by overriding the
  default value using the following system property.
   System property name: jdk.tls.namedGroups
   Property value:
  "x25519,secp256r1,secp384r1,secp521r1,x448,ffdhe2048,ffdhe3072,f
  fdhe4096,ffdhe6144,ffdhe8192"
  
   2. Append the following value to the
  jdk.tls.disabledAlgorithms property in the java.security file
  located at: <JAVA_HOME>\jre\lib\security\java.security
   value: X25519MLKEM768, SecP256r1MLKEM768,
  SecP384r1MLKEM1024
  

Problem summary

• A build failure occurred when compiling the Java application
  with Java 8.0.8.55 and Maven 3.9.11 when TLS 1.3 and PQC hybrid
  key agreements were enabled, resulting in an
  AEADBadTagException: ICC_AES_GCM_En/DecryptFinal
  

Problem conclusion

• The JVM has been updated to correctly handle PQC hybrid key
  agreements in TLS 1.3 when running in a multi-threaded
  environment.
  
   GIT issues: JSSE: 392
   RTC problem report: 153357
   The associated Austin APAR is IJ56786
  
   The affected files:
   ibmjsseprovider2.jar
  
   ibmjsseprovider2.jar build dates:
   Build-Date:20251125
  
   Build: 8.0 build_20251125--570
  
   The fixes were delivered for: Java 8.0 SR8 FP60
  
  .
  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

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