The "testtiger" program at the author's homepage was intended to allow easy testing of the test source code, rather than to define any particular print order. Actually the specification of Tiger do not define the way the output of Tiger is printed, however its testvectors for NESSIE are using the quasi-standard printing method for hashes which is the big endian byte order (this print order is also used by MD5 and SHA1 hash outputs for example, as it allows also humans to read the number from left to right). Therefore in the example below the 192-bit (24-byte) Tiger hashes are represented as 48-digit hexadecimal numbers in big endian byte order. The following demonstrates a 43-byte ASCII input and the corresponding Tiger hashes: From Wikipedia, the free encyclopedia