1 Description of the Intermediate Value Known Answer Test

     2 --------------------------------------------------------

     3 

     4 The test encrypts one plaintext with a variable number of rounds.

     5 In ECB encryption mode, the output PTi is the output after the 

     6 initial key addition and i rounds (a round ends with a key

     7 addition). 

     8 

     9 As explained in the documentation, in ECB decryption mode 

    10 there are several definitions of a `round' possible. In order

    11 to make visual inspection more intuitive, we output the

    12 intermediate values that correspond with the output of the

    13 encryption mode. 

    14 These values might actually not occur in a practical decryption,

    15 especially in an optimised implementation, where various operations

    16 of different rounds are interchanged.

    17 

    18 This explains also why the Java and the C code output different

    19 files for this test.