COMPLETE STATUS:

    Java 1.2+      :: optimised
    Python 3       :: optimised
    Python 2       :: optimised for Python 3
    C ISO C90      :: optimised
    Java/C JNI     :: optimised
    Vala           :: under development
    NASM           :: planned (maybe)
    Python 3 + C   :: planned (maybe)
    Haskell        :: planned (maybe)
    Perl           :: planned (maybe)
    D              :: planned (maybe)
    Common Lisp    :: planned (perhaps)
    Scala          :: planned (perhaps)
    Magic          :: planned (perhaps)


PERFORMANCE COMPARISON:

    C ISO C90      ::  0,082s ~   1
    Java/C JNI     ::  0,175s ~   2,13
    Java 1.2+      ::  0,228s ~   2,78
    Python 3       :: 24,373s ~ 297
    Python 2       :: 34,595s ~ 422
    
    md5sum         ::  0,009s ~   0,110
    sha1sum        ::  0,013s ~   0,159
    sha384sum      ::  0,015s ~   0,183
    sha512sum      ::  0,015s ~   0,183
    sha224sum      ::  0,020s ~   0,244
    sha256sum      ::  0,021s ~   0,256
    md6sum         ::  0,165s ~   2,012
    
    Based on test against a 2,3 MB file.


**SHA-3/Keccak checksum calculator**

*USAGE:*

    sha3sum [option...] < FILE
    sha3sum [option...] file...

*OPTIONS:*

    -r BITRATE
    --bitrate      The bitrate to use for SHA-3.          (default: 1024)
    
    -c CAPACITY
    --capacity     The capacity to use for SHA-3.         (default: 576)
    
    -w WORDSIZE
    --wordsize     The word size to use for SHA-3.        (default: 64)
    
    -o OUTPUTSIZE
    --outputsize   The output size to use for SHA-3.      (default: 512)
    
    -s STATESIZE
    --statesize    The state size to use for SHA-3.       (default: 1600)
    
    -i ITERATIONS
    --iterations   The number of hash iterations to run.  (default: 1)
    
    -j SQUEEZES
    --squeezes     The number of hash squeezes to run.    (default: 1)
    
    -h
    --hex          Read the input in hexadecimal, rather than binary.
    
    -b
    --binary       Print the checksum in binary, rather than hexadecimal.
    
    -m
    --multi        Print the chechsum at all iterations.


**Pending the standardisation of SHA-3**, there is no specification of particular
SHA-3 functions yet. Our defaults are based on Keccak[] being Keccak[r = 1024, c = 576]
rather than the functions in Wikipedia's entires that uses [r = 576, c = 1024].


If you want to contribute with an implementation in another
language, please try do so in the earliest version of the
language officially supported on GNU/Linux, unless there are
backwards incompatibilities (as is the case with Python.)
This helps for embedded devices.