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Thread: Good Encryption encoder/decoder

  1. #1
    Join Date
    Aug 2008
    Posts
    2

    Good Encryption encoder/decoder

    Hi Im kinda new at encryption and was wondering if any one new of a good free or inexpensive encryption encoder/decoder I could download. Currently I am trying to decipher this, eb5feccbdc5d78ecd*cb6b*a*8255cba. Could someone tell me what type of encryption this is? (also if you want to go ahead and crack it for me that would be great!)

  2. #2
    Join Date
    Aug 2008
    Posts
    2
    still trying to crack it, so far Im having no luck. Just found out its not md5 either. I dont know if I mentioned this before, but it was located inside a cookie

  3. #3
    Join Date
    Aug 2008
    Posts
    1
    The admins at HEMU.co.nr might know...

  4. #4
    Join Date
    Sep 2006
    Posts
    1,653
    I'm positive it's MD5. If you found it in a cookie, it usually is MD5.
    "Workers of the world unite; you have nothing to lose but your chains." -Karl Marx

  5. #5
    Join Date
    Sep 2014
    Posts
    18
    It's not mandatory that the length of the string be a square number, but when it is it's a lot easier. Also, it's a much more interesting problem to solve when allowing for any length string.

    To be efficient, I want to just work with a character array and not try to construct a 2-D array of char. For non-square number length strings, padding needs to be inserted to get to the square number length.

    /*
    * Caesar's Box decoder/encoder
    */
    #include <stdio.h>
    #include <string.h>
    #include <math.h>

    #define MAX_LINE_LEN *024
    #define SKIP '_'

    typedef enum { false = 0, true } bool;
    typedef enum { ENCODE, DECODE } xf_t;

    void caesarBoxTransform(char *, char *);
    void insertChar(char *, size_t, char);
    void insertPadding(char *,xf_t);
    bool isSquareNumber(unsigned);

    char cipherText[MAX_LINE_LEN];
    char plainText[MAX_LINE_LEN] = "";

    int main(int argc, char *argv[]) {
    while (true) {
    do {
    printf("Enter Caesar's Ciphertext (no spaces): ");
    fgets( cipherText,MAX_LINE_LEN,stdin );
    *( strchr(cipherText,'\n') ) = '\0';
    } while ( strchr(cipherText,' ') != NULL );
    insertPadding( cipherText, DECODE );
    caesarBoxTransform( cipherText, plainText );
    printf("\nDecoded: %s",plainText);
    strcpy(cipherText,"");
    insertPadding( plainText, ENCODE );
    caesarBoxTransform( plainText, cipherText );
    printf("\nRe-encoded: %s\n\n",cipherText);
    }
    return 0;
    }

    /*
    * Transform string 'in' and store result in 'out'.
    */
    void caesarBoxTransform(char *in, char *out) {
    size_t i,j,x,z = 0;
    char c;

    memset( out,'\0',strlen(in)+* );
    x = (size_t)sqrt( (double)strlen(in) );
    for (i = 0; i < x; i++) {
    for (j = 0; j < x; j++) {
    if ((c = in[i+j*x]) != SKIP) {
    out[z++] = c;
    }
    }
    }
    }

    /*
    * Insert pad chars in string s, if necessary,
    * for unused elements in the Caesar's Box matrix.
    */
    void insertPadding(char *s, xf_t xfType) {
    static const char skipStr[2] = { SKIP, '\0' };
    unsigned x,n,i,j,len = strlen(s);

    if (isSquareNumber(n = len) == false) {
    while (isSquareNumber(++n) == false);
    if (xfType == DECODE) {
    x = (unsigned)sqrt(n) - *;
    for (i = 0, j = len; i < n-len; i++, j -= x) {
    insertChar( s,j,SKIP );
    }
    } else { /* pad for encoding */
    for (i = 0; i < n-len; i++) {
    strcat(s,skipStr);
    }
    }
    }
    }

    /*
    * Insert character c at position pos in char array
    * s. Assume s has room to insert.
    */
    void insertChar(char *s, size_t pos, char c) {
    size_t len = strlen(s);

    if (pos <= len) {
    memmove( &s[pos+*],&s[pos],len-pos );
    s[pos] = c;
    }
    }

    /*
    * Return true if n is a square number.
    */
    bool isSquareNumber(unsigned n) {
    unsigned x = (unsigned)sqrt((double)n);
    return ((x * x) == n);
    }

    #if 0

    Sample run:

    Enter Caesar's Ciphertext (no spaces): gtyorjoteouiabgt

    Decoded: greatjobyougotit
    Re-encoded: gtyorjoteouiabgt

    Enter Caesar's Ciphertext (no spaces): huhuedapyetdws

    Decoded: heydudewhatsup
    Re-encoded: huhuedapyetdws

    Enter Caesar's Ciphertext (no spaces): haeandviaecy

    Decoded: haveaniceday
    Re-encoded: haeandviaecy

  6. #6
    Join Date
    Apr 2015
    Posts
    121
    Encoding Decoding Free is a wonderful free application. I haven't tried cracking any code yet. I'm just here to s***est an application to make your work faster. Pair it up with a VPN that makes your internet experience more wonderful.

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