Triple DES Encryption
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:
- Encipher the data using the first key
- Decipher the result using the second key
- Encipher the second result using the third key
The procedure is reversed to decipher data that has been triple-DES
enciphered:
- Decipher the data using the third key
- Encipher the result using the second key
- Decipher the second result using the first key
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.