APAR status
Closed as program error.
Error description
Error Message: java x.crypto.IllegalBlockSizeException: lHash mismatch at com.ibm.crypto.provider.RSA.a(Unknown Source) at com.ibm.crypto.provider.RSA.engineDoFinal(Unknown Source) at javax.crypto.Cipher.doFinal(Unknown Source) at Test.main(Test.java:76) . Stack Trace: java x.crypto.IllegalBlockSizeException: lHash mismatch at com.ibm.crypto.provider.RSA.a(Unknown Source) at com.ibm.crypto.provider.RSA.engineDoFinal(Unknown Source) at javax.crypto.Cipher.doFinal(Unknown Source) at Test.main(Test.java:76) .
Local fix
Problem summary
There are 3 scenarios, when the BigIntegers's toByteArray() method is called, that result in the problem: 1) The resulting ByteArray does not have a byte corresponding to one leading zero in BigInteger. 2) The resulting ByteArray does not have bytes corresponding to many leading zeroes in BigInteger 3) One or more extra leading zero is introduced in the resulting ByteArray, though there are no leading zeroes in the BigInteger. The old code addresses only scenario 1. We addressed scenario 2 and 3 to fix this problem.
Problem conclusion
This defect will be fixed in: 6.0.0 SR7 5.0.0 SR12 . RFC clearly says the following: 4. Convert the message representative m to an encoded message EM of length k-1 octets: EM = I2OSP (m, k-1) We now deal with all three cases listed in the problem description. . To obtain the fix: Install build 20091205 or later
Temporary fix
Comments
APAR Information
APAR number
IZ65240
Reported component name
JAVA 5 SECURITY
Reported component ID
620500125
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-11-16
Closed date
2009-12-31
Last modified date
2009-12-31
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
JAVA 5 SECURITY
Fixed component ID
620500125
Applicable component levels
R500 PSN
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNVBF","label":"Runtimes for Java Technology"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.0","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]
Document Information
Modified date:
07 December 2020