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Triple DES Encryption z/OS Cryptographic Services ICSF Application Programmer's Guide SA22-7522-16 |
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Triple-DES encryption uses a triple-length DATA key comprised of three 8-byte DES keys to encipher 8 bytes of data using this method:
The procedure is reversed to decipher data that has been triple-DES enciphered:
ICSF uses the triple-DES encryption in the CBC encipherment mode. A variation of the triple DES algorithm supports the use of a double-length DATA key comprised of two 8-byte DATA keys. In this method, the first 8-byte key is reused in the last encipherment step. Due to export regulations, triple-DES encryption may not be available on your processor. |
Copyright IBM Corporation 1990, 2014
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