Node:TMMH/16, Next:, Previous:The MacFactory Class, Up:Message Authentication Codes


In addition to the key, the TMMH/16 requires three more parameters passed to its init method, using the following three keys:

java.lang.String TAG_LENGTH Variable
The output length, in bytes, represented as a java.lang.Integer. This value must be an even integer between 2 and 64.

java.lang.String KEYSTREAM Variable
An instance of gnu.crypto.prng.IRandom, which is to serve as the source of random bytes for this instance.

java.lang.String PREFIX Variable
A byte array of TAG_LENGTH bytes. If this parameter is omitted an all-zero byte array will be used. This value is XORed with the digest just before it is returned.