IV75772: THE AMOUNT OF REREAD DATA IS LESS THAN THE EXPECTED AMOUNT AFTER ENCRYPTION

APAR status

• Closed as program error.

Error description

• Error Message: When using direct input and output ByteBuffer to
  perform encryption/decryption, the actual amount of
  encrypted/decrypted data returned is not the same as the
  expected amount.
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• Last block of data is not processed when using DIRECT ByteBuffer
  and ByteBuffer.remaining is 0 when calling Cipher.doFinal()
  

Problem conclusion

• The fix is to process the buffered data even if
  ByteBuffer.remaining is 0 when calling Cipher.doFinal()
  The associated RTC PR is 96113
  The associated Austin CMVC defect is 116806
  The associated Hursley CMVC defect is 202845
  The associated APAR is IV74909
  JVMs affected : Java 5.0, Java 6.0, Java 6.1, Java 7.0, Java 7.1
  and Java 8.0
  The fix was delivered for Java 5.0 SR16 FP14, Java 6.0 SR16
  FP15, Java 6.1 SR8 FP15, Java 7.0 SR9 FP20, Java 7.1 SR3 FP20
  and Java 8.0 SR2
  The affected jar is "ibmjcefw.jar".
  The build level of this jar for the affected releases is
  "20150722"
  .
  This APAR will be fixed in the following Java Releases:
     7 R1 SR3 FP20  (7.1.3.20)
     6    SR16 FP15 (6.0.16.15)
     8    SR2       (8.0.2.0)
     5.0  SR16 FP14 (5.0.16.14)
     6 R1 SR8 FP15  (6.1.8.15)
     7    SR9 FP20  (7.0.9.20)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             https://www.ibm.com/developerworks/java/jdk/
  

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:

  IV75773

Fix information

• Fixed component name

  SECURITY

• Fixed component ID

  620700125

Applicable component levels

• R260 PSY

     UP

• R600 PSY

     UP

• R270 PSY

     UP