Cross Platform Algorithm Chain Considerations

When encrypting and decrypting data across multiple platforms where Db2 z/OS is one of two or more platforms, the PSUnicodeToAscii_Generic_ENC algorithm must be the first algorithm in the encrypting algorithm chain. Conversely, PSAsciiToUnicode_Generic_DEC must be the last algorithm in the decrypting algorithm chain.

Note:

If all participating encrypting and decrypting systems are on the Db2 z/OS platform, it is not necessary to use the generic algorithms. If none of the encrypting and decrypting systems in a cross platforms scenario are on the Db2 z/OS platform, the PSUnicodeToAscii_Generic_ENC algorithm functions exactly like the PSUnicodeToAscii algorithm and the PSAsciiToUnicode_Generic_DEC algorithm functions exactly like the PSAsciiToUnicode algorithm.

Important:

If you modify current algorithm chains by replacing the PSUnicodeToAscii or the PSAsciiToUnicode algorithms with the PSUnicodeToAscii_Generic_ENC or the PSAsciiToUnicode_Generic_DEC algorithms, respectively, currently stored encrypted data on the Db2 z/OS DB must be unencrypted using the original decryption chain and reencrypted with the new encryption chain.