1. #1
    Kathleen
    Join Date
    Oct 2011
    Posts
    1

    What is the algorithm and codes of the Advance DES Like Message Digest Computation(ADMC) program?

    What is the algorithm and codes of this program:
    Advance DES-like Message Digest Computation [ADMDC]
    PLEASE HELP MY PROJECT!! TO BE PASSED ON OCTOBER 16..





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  3. #2
    cuty
    Join Date
    Oct 2011
    Posts
    223

    Re: What is the algorithm and codes of the Advance DES Like Message Digest Computation(ADMC) program?

    Quote Originally Posted by Kathleen View Post
    What is the algorithm and codes of this program:
    Advance DES-like Message Digest Computation [ADMDC]
    PLEASE HELP MY PROJECT!! TO BE PASSED ON OCTOBER 16..
    Hi

    DES algorithm can be implemented in many ways.You can calculate the lenghts between routers and also you can keep security for systems.

    Algorithm:


    for each 512-bit chunk of message
    break chunk into sixteen 32-bit little-endian words w[j], 0 ≤ j ≤ 15
    //Initialize hash value for this chunk:
    var int a := h0
    var int b := h1
    var int c := h2
    var int d := h3
    //Main loop:
    for i from 0 to 63
    if 0 ≤ i ≤ 15 then
    f := (b and c) or ((not b) and d)
    g := i
    else if 16 ≤ i ≤ 31
    f := (d and b) or ((not d) and c)
    g := (5Îi + 1) mod 16
    else if 32 ≤ i ≤ 47
    f := b xor c xor d
    g := (3Îi + 5) mod 16
    else if 48 ≤ i ≤ 63
    f := c xor (b or (not d))
    g := (7Îi) mod 16
    temp := d
    d := c
    c := b
    b := b + leftrotate((a + f + k[i] + w[g]) , r[i])
    a := temp
    end for
    //Add this chunk's hash to result so far:
    h0 := h0 + a
    h1 := h1 + b
    h2 := h2 + c
    h3 := h3 + d
    end for




  4. #3
    Unregistered

    Re: What is the algorithm and codes of the Advance DES Like Message Digest Computation(ADMC) program?

    Thank you cuty !!!this is a great help..!!!. Now I can start my project!! my problem now is how to generate a flowchart and pseudocode out of this program...Can you help me please?

  5. #4
    katzkie

    Re: What is the algorithm and codes of the Advance DES Like Message Digest Computation(ADMC) program?

    Thanks cuty .... this is a great help.. my problem now is how to create a flowchart and pseudocode for this program..
    Can you help me please???

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