bonjour!
bon voila j'ai besoin programme de hachage de type MD5 en perl
j'ai trouvé ça

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# Derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm
 
use strict;
package md5;
require Exporter;
@md5::ISA = qw(Exporter);
@md5::EXPORT = qw(md5 md5_init md5_update md5_final);
 
# MD5 context
my @state;      # array of four integers (A, B, C, D)
my @count;      # number of bits, modulo 2^64, lsb first
my $buffer;     # accumulates bytes until we get a 64-byte block to process
 
my $PADDING = "\200\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" .
                "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" .
                "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" .
                "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
 
 
# Given '$str', returns digest of '$str'
sub md5 # ($str)
{
        my ($str) = @_;
 
        my $digest;
 
        md5_init();
        md5_update($str);
        $digest = md5_final();
        return $digest;
}
 
 
# Finishes the MD5 calculation and returns the digest
sub md5_final
{
        my $bits;
        my $index;
        my $pad_len;
 
        # Save number of bits
        $bits = md5_encode(@count);
 
        # Pad out to 56 mod 64.
        $index = ($count[0] >> 3) & 0x3f;
        if ($index < 56)
          {
          $pad_len = 56 - $index;
          }
        else
          {
          $pad_len = 120 - $index;
          }
        md5_update(substr($PADDING,0,$pad_len));
 
        # Append length (before padding)
        md5_update($bits);
 
        return md5_encode(@state);
}
 
 
# Initialize MD5 context to start a new digest
sub md5_init
{
        @count = (0,0);
        # magic initialization constants
        @state = (0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476);
        $buffer = '';
}
 
 
# Process another block of message, updating context
sub md5_update # ($input)
{
        my($input) = @_;
 
        my $i;
        my $index;
        my $input_len;
        my $part_len;
 
        $input_len = length($input);
 
        # Compute number of bytes mod 64
        $index = (($count[0] >> 3) & 0x3F);
 
        # Update number of bits
        $count[0] = $count[0] + ($input_len << 3);
        if ($count[0] != ($count[0] & 0xffffffff))      # overflow
          {
          $count[0] = 0;
          $count[1] = $count[1] + 1;
          }
        $count[1] = $count[1] + ($input_len >> 29);
 
        $part_len = 64 - $index;
 
        # Transform as many times as possible.
 
        if ($input_len < $part_len)
          {
          $i = 0;
          }
        else
          {
          substr($buffer,$index,$part_len) = substr($input,0,$part_len);
          md5_transform($buffer);
 
          for ($i = $part_len; $i + 63 < $input_len; $i += 64)
            {
            md5_transform(substr($input,$i,64));
            }
          $index = 0;
          }
 
        # Buffer remaining input
        substr($buffer,$index,($input_len - $i)) =
                                          substr($input,$i,($input_len - $i));
}
 
 
sub add_unsigned # ($a1,...,$an)
{
        my $addend;
        my $sum;
 
        $sum = 0;
        foreach $addend (@_)
          {
          $sum = (($sum & 0x7fffffff) + ($addend & 0x7fffffff)) ^
                  ($sum & 0x80000000) ^ ($addend & 0x80000000);
          }
 
        return $sum;
}
 
 
sub FF # ($a,$b,$c,$d,$x,$s,$ac)
{
        my($a,$b,$c,$d,$x,$s,$ac) = @_;
 
        $a = add_unsigned($a,(($b & $c) | (~$b & $d)),$x,$ac);
        $a = rotate_left($a,$s);
        return add_unsigned($a,$b);
}
 
 
sub GG # ($a,$b,$c,$d,$x,$s,$ac)
{
        my($a,$b,$c,$d,$x,$s,$ac) = @_;
 
        $a = add_unsigned($a,(($b & $d) | ($c & ~$d)),$x,$ac);
        $a = rotate_left($a,$s);
        return add_unsigned($a,$b);
}
 
 
sub HH # ($a,$b,$c,$d,$x,$s,$ac)
{
        my($a,$b,$c,$d,$x,$s,$ac) = @_;
 
        $a = add_unsigned($a,($b ^ $c ^ $d),$x,$ac);
        $a = rotate_left($a,$s);
        return add_unsigned($a,$b);
}
 
 
sub II # ($a,$b,$c,$d,$x,$s,$ac)
{
        my($a,$b,$c,$d,$x,$s,$ac) = @_;
 
        $a = add_unsigned($a,($c ^ ($b | ~$d)),$x,$ac);
        $a = rotate_left($a,$s);
        return add_unsigned($a,$b);
}
 
 
# Returns packed version of $input in array of integers
# length of $input must be a multiple of 4
sub md5_decode # ($input)
{
        my($input) = @_;
 
        my $i;
        my $j;
        my $len;
        my @output;
 
        $len = length($input);
        $i = 0;
        $j = 0;
        while ($j < $len)
          {
          $output[$i] = ord(substr($input,$j,1)) |
                      (ord(substr($input,$j+1,1)) <<  8) |
                      (ord(substr($input,$j+2,1)) << 16) |
                      (ord(substr($input,$j+3,1)) << 24);
          $i = $i + 1;
          $j = $j + 4;
          }
 
        return @output;
}
 
 
# Returns character version of (array of integers) @input
sub md5_encode # (@input)
{
        my(@input) = @_;
 
        my $output;
        my $i;
        my $len;
 
        $len = $#input + 1;
        $i = 0;
        $output = '';
        while ($i < $len)
          {
          $output = $output . chr( $input[$i]        & 0xff);
          $output = $output . chr(($input[$i] >>  8) & 0xff);
          $output = $output . chr(($input[$i] >> 16) & 0xff);
          $output = $output . chr(($input[$i] >> 24) & 0xff);
          $i = $i + 1;
          }
 
        return $output;
}
 
 
# MD5 basic transformation. Transforms state based on $block.
# $block must contain exactly 64 bytes.
sub md5_transform # ($block)
{
        my($block) = @_;
 
        my $a = $state[0];
        my $b = $state[1];
        my $c = $state[2];
        my $d = $state[3];
        my @x;
 
        @x = md5_decode($block);
 
# Round 1
        $a = FF($a,$b,$c,$d,$x[ 0], 7,0xd76aa478); # 1
        $d = FF($d,$a,$b,$c,$x[ 1],12,0xe8c7b756); # 2
        $c = FF($c,$d,$a,$b,$x[ 2],17,0x242070db); # 3
        $b = FF($b,$c,$d,$a,$x[ 3],22,0xc1bdceee); # 4
        $a = FF($a,$b,$c,$d,$x[ 4], 7,0xf57c0faf); # 5
        $d = FF($d,$a,$b,$c,$x[ 5],12,0x4787c62a); # 6
        $c = FF($c,$d,$a,$b,$x[ 6],17,0xa8304613); # 7
        $b = FF($b,$c,$d,$a,$x[ 7],22,0xfd469501); # 8
        $a = FF($a,$b,$c,$d,$x[ 8], 7,0x698098d8); # 9
        $d = FF($d,$a,$b,$c,$x[ 9],12,0x8b44f7af); # 10
        $c = FF($c,$d,$a,$b,$x[10],17,0xffff5bb1); # 11
        $b = FF($b,$c,$d,$a,$x[11],22,0x895cd7be); # 12
        $a = FF($a,$b,$c,$d,$x[12], 7,0x6b901122); # 13
        $d = FF($d,$a,$b,$c,$x[13],12,0xfd987193); # 14
        $c = FF($c,$d,$a,$b,$x[14],17,0xa679438e); # 15
        $b = FF($b,$c,$d,$a,$x[15],22,0x49b40821); # 16
 
# Round 2
        $a = GG($a,$b,$c,$d,$x[ 1], 5,0xf61e2562); # 17
        $d = GG($d,$a,$b,$c,$x[ 6], 9,0xc040b340); # 18
        $c = GG($c,$d,$a,$b,$x[11],14,0x265e5a51); # 19
        $b = GG($b,$c,$d,$a,$x[ 0],20,0xe9b6c7aa); # 20
        $a = GG($a,$b,$c,$d,$x[ 5], 5,0xd62f105d); # 21
        $d = GG($d,$a,$b,$c,$x[10], 9, 0x2441453); # 22
        $c = GG($c,$d,$a,$b,$x[15],14,0xd8a1e681); # 23
        $b = GG($b,$c,$d,$a,$x[ 4],20,0xe7d3fbc8); # 24
        $a = GG($a,$b,$c,$d,$x[ 9], 5,0x21e1cde6); # 25
        $d = GG($d,$a,$b,$c,$x[14], 9,0xc33707d6); # 26
        $c = GG($c,$d,$a,$b,$x[ 3],14,0xf4d50d87); # 27
        $b = GG($b,$c,$d,$a,$x[ 8],20,0x455a14ed); # 28
        $a = GG($a,$b,$c,$d,$x[13], 5,0xa9e3e905); # 29
        $d = GG($d,$a,$b,$c,$x[ 2], 9,0xfcefa3f8); # 30
        $c = GG($c,$d,$a,$b,$x[ 7],14,0x676f02d9); # 31
        $b = GG($b,$c,$d,$a,$x[12],20,0x8d2a4c8a); # 32
 
# Round 3
        $a = HH($a,$b,$c,$d,$x[ 5], 4,0xfffa3942); # 33
        $d = HH($d,$a,$b,$c,$x[ 8],11,0x8771f681); # 34
        $c = HH($c,$d,$a,$b,$x[11],16,0x6d9d6122); # 35
        $b = HH($b,$c,$d,$a,$x[14],23,0xfde5380c); # 36
        $a = HH($a,$b,$c,$d,$x[ 1], 4,0xa4beea44); # 37
        $d = HH($d,$a,$b,$c,$x[ 4],11,0x4bdecfa9); # 38
        $c = HH($c,$d,$a,$b,$x[ 7],16,0xf6bb4b60); # 39
        $b = HH($b,$c,$d,$a,$x[10],23,0xbebfbc70); # 40
        $a = HH($a,$b,$c,$d,$x[13], 4,0x289b7ec6); # 41
        $d = HH($d,$a,$b,$c,$x[ 0],11,0xeaa127fa); # 42
        $c = HH($c,$d,$a,$b,$x[ 3],16,0xd4ef3085); # 43
        $b = HH($b,$c,$d,$a,$x[ 6],23, 0x4881d05); # 44
        $a = HH($a,$b,$c,$d,$x[ 9], 4,0xd9d4d039); # 45
        $d = HH($d,$a,$b,$c,$x[12],11,0xe6db99e5); # 46
        $c = HH($c,$d,$a,$b,$x[15],16,0x1fa27cf8); # 47
        $b = HH($b,$c,$d,$a,$x[ 2],23,0xc4ac5665); # 48
# Round 4
        $a = II($a,$b,$c,$d,$x[ 0], 6,0xf4292244); # 49
        $d = II($d,$a,$b,$c,$x[ 7],10,0x432aff97); # 50
        $c = II($c,$d,$a,$b,$x[14],15,0xab9423a7); # 51
        $b = II($b,$c,$d,$a,$x[ 5],21,0xfc93a039); # 52
        $a = II($a,$b,$c,$d,$x[12], 6,0x655b59c3); # 53
        $d = II($d,$a,$b,$c,$x[ 3],10,0x8f0ccc92); # 54
        $c = II($c,$d,$a,$b,$x[10],15,0xffeff47d); # 55
        $b = II($b,$c,$d,$a,$x[ 1],21,0x85845dd1); # 56
        $a = II($a,$b,$c,$d,$x[ 8], 6,0x6fa87e4f); # 57
        $d = II($d,$a,$b,$c,$x[15],10,0xfe2ce6e0); # 58
        $c = II($c,$d,$a,$b,$x[ 6],15,0xa3014314); # 59
        $b = II($b,$c,$d,$a,$x[13],21,0x4e0811a1); # 60
        $a = II($a,$b,$c,$d,$x[ 4], 6,0xf7537e82); # 61
        $d = II($d,$a,$b,$c,$x[11],10,0xbd3af235); # 62
        $c = II($c,$d,$a,$b,$x[ 2],15,0x2ad7d2bb); # 63
        $b = II($b,$c,$d,$a,$x[ 9],21,0xeb86d391); # 64
 
        $state[0] = add_unsigned($state[0],$a);
        $state[1] = add_unsigned($state[1],$b);
        $state[2] = add_unsigned($state[2],$c);
        $state[3] = add_unsigned($state[3],$d);
}
 
 
# rotate $x left $n bits.
sub rotate_left # ($x,$n)
{
        my($x,$n) = @_;
 
        return(($x << $n) | ($x >> (32 - $n)) & 0xffffffff);
}
 
1;      # for require
******************************************************

mais ça ne marche pas, je n'ai pas trouvé l'emplacement des l'input ( c a d le chaine a entrer) et output ( "les caractères" après hachage de la chaine) et je suis debutant en perl
merci