C
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/md5.h>
const char *string = "The quick brown fox jumped over the lazy dog's back";
int main()
{
int i;
unsigned char result[MD5_DIGEST_LENGTH];
MD5(string, strlen(string), result);
// output
for(i = 0; i < MD5_DIGEST_LENGTH; i++)
printf("%02x", result[i]);
printf("\n");
return EXIT_SUCCESS;
}
Implementation of md5
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
typedef union uwb {
unsigned w;
unsigned char b[4];
} WBunion;
typedef unsigned Digest[4];
unsigned f0( unsigned abcd[] ){
return ( abcd[1] & abcd[2]) | (~abcd[1] & abcd[3]);}
unsigned f1( unsigned abcd[] ){
return ( abcd[3] & abcd[1]) | (~abcd[3] & abcd[2]);}
unsigned f2( unsigned abcd[] ){
return abcd[1] ^ abcd[2] ^ abcd[3];}
unsigned f3( unsigned abcd[] ){
return abcd[2] ^ (abcd[1] |~ abcd[3]);}
typedef unsigned (*DgstFctn)(unsigned a[]);
unsigned *calcKs( unsigned *k)
{
double s, pwr;
int i;
pwr = pow( 2, 32);
for (i=0; i<64; i++) {
s = fabs(sin(1+i));
k[i] = (unsigned)( s * pwr );
}
return k;
}
// ROtate v Left by amt bits
unsigned rol( unsigned v, short amt )
{
unsigned msk1 = (1<<amt) -1;
return ((v>>(32-amt)) & msk1) | ((v<<amt) & ~msk1);
}
unsigned *md5( const char *msg, int mlen)
{
static Digest h0 = { 0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476 };
// static Digest h0 = { 0x01234567, 0x89ABCDEF, 0xFEDCBA98, 0x76543210 };
static DgstFctn ff[] = { &f0, &f1, &f2, &f3 };
static short M[] = { 1, 5, 3, 7 };
static short O[] = { 0, 1, 5, 0 };
static short rot0[] = { 7,12,17,22};
static short rot1[] = { 5, 9,14,20};
static short rot2[] = { 4,11,16,23};
static short rot3[] = { 6,10,15,21};
static short *rots[] = {rot0, rot1, rot2, rot3 };
static unsigned kspace[64];
static unsigned *k;
static Digest h;
Digest abcd;
DgstFctn fctn;
short m, o, g;
unsigned f;
short *rotn;
union {
unsigned w[16];
char b[64];
}mm;
int os = 0;
int grp, grps, q, p;
unsigned char *msg2;
if (k==NULL) k= calcKs(kspace);
for (q=0; q<4; q++) h[q] = h0[q]; // initialize
{
grps = 1 + (mlen+8)/64;
msg2 = malloc( 64*grps);
memcpy( msg2, msg, mlen);
msg2[mlen] = (unsigned char)0x80;
q = mlen + 1;
while (q < 64*grps){ msg2[q] = 0; q++ ; }
{
// unsigned char t;
WBunion u;
u.w = 8*mlen;
// t = u.b[0]; u.b[0] = u.b[3]; u.b[3] = t;
// t = u.b[1]; u.b[1] = u.b[2]; u.b[2] = t;
q -= 8;
memcpy(msg2+q, &u.w, 4 );
}
}
for (grp=0; grp<grps; grp++)
{
memcpy( mm.b, msg2+os, 64);
for(q=0;q<4;q++) abcd[q] = h[q];
for (p = 0; p<4; p++) {
fctn = ff[p];
rotn = rots[p];
m = M[p]; o= O[p];
for (q=0; q<16; q++) {
g = (m*q + o) % 16;
f = abcd[1] + rol( abcd[0]+ fctn(abcd) + k[q+16*p] + mm.w[g], rotn[q%4]);
abcd[0] = abcd[3];
abcd[3] = abcd[2];
abcd[2] = abcd[1];
abcd[1] = f;
}
}
for (p=0; p<4; p++)
h[p] += abcd[p];
os += 64;
}
if( msg2 )
free( msg2 );
return h;
}
int main( int argc, char *argv[] )
{
int j,k;
const char *msg = "The quick brown fox jumps over the lazy dog.";
unsigned *d = md5(msg, strlen(msg));
WBunion u;
printf("= 0x");
for (j=0;j<4; j++){
u.w = d[j];
for (k=0;k<4;k++) printf("%02x",u.b[k]);
}
printf("\n");
return 0;
}
C++
#include <string>
#include <iostream>
#include "Poco/MD5Engine.h"
#include "Poco/DigestStream.h"
using Poco::DigestEngine ;
using Poco::MD5Engine ;
using Poco::DigestOutputStream ;
int main( ) {
std::string myphrase ( "The quick brown fox jumped over the lazy dog's back" ) ;
MD5Engine md5 ;
DigestOutputStream outstr( md5 ) ;
outstr << myphrase ;
outstr.flush( ) ; //to pass everything to the digest engine
const DigestEngine::Digest& digest = md5.digest( ) ;
std::cout << myphrase << " as a MD5 digest :\n" << DigestEngine::digestToHex( digest )
<< " !" << std::endl ;
return 0 ;
}
输出:
The quick brown fox jumped over the lazy dog's back as a MD5 digest :
e38ca1d920c4b8b8d3946b2c72f01680 !
C#
using System.Text;
using System.Security.Cryptography;
byte[] data = Encoding.ASCII.GetBytes("The quick brown fox jumped over the lazy dog's back");
byte[] hash = MD5.Create().ComputeHash(data);
Console.WriteLine(BitConverter.ToString(hash).Replace("-", "").ToLower());
Go
package main
import (
"crypto/md5"
"fmt"
)
func main() {
for _, p := range [][2]string{
// RFC 1321 test cases
{"d41d8cd98f00b204e9800998ecf8427e", ""},
{"0cc175b9c0f1b6a831c399e269772661", "a"},
{"900150983cd24fb0d6963f7d28e17f72", "abc"},
{"f96b697d7cb7938d525a2f31aaf161d0", "message digest"},
{"c3fcd3d76192e4007dfb496cca67e13b", "abcdefghijklmnopqrstuvwxyz"},
{"d174ab98d277d9f5a5611c2c9f419d9f",
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"},
{"57edf4a22be3c955ac49da2e2107b67a", "12345678901234567890" +
"123456789012345678901234567890123456789012345678901234567890"},
// test case popular with other RC solutions
{"e38ca1d920c4b8b8d3946b2c72f01680",
"The quick brown fox jumped over the lazy dog's back"},
} {
validate(p[0], p[1])
}
}
var h = md5.New()
func validate(check, s string) {
h.Reset()
h.Write([]byte(s))
sum := fmt.Sprintf("%x", h.Sum(nil))
if sum != check {
fmt.Println("MD5 fail")
fmt.Println(" for string,", s)
fmt.Println(" expected: ", check)
fmt.Println(" got: ", sum)
}
}
Java
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class Digester {
public static void main(String[] args) {
System.out.println(hexDigest("Encryption code", "MD5"));
}
static String hexDigest(String str, String digestName) {
try {
MessageDigest md = MessageDigest.getInstance(digestName);
byte[] digest = md.digest(str.getBytes(StandardCharsets.UTF_8));
char[] hex = new char[digest.length * 2];
for (int i = 0; i < digest.length; i++) {
hex[2 * i] = "0123456789abcdef".charAt((digest[i] & 0xf0) >> 4);
hex[2 * i + 1] = "0123456789abcdef".charAt(digest[i] & 0x0f);
}
return new String(hex);
} catch (NoSuchAlgorithmException e) {
throw new IllegalStateException(e);
}
}
}
Kotlin
// version 1.0.6
import java.security.MessageDigest
fun main(args: Array<String>) {
val text = "The quick brown fox jumped over the lazy dog's back"
val bytes = text.toByteArray()
val md = MessageDigest.getInstance("MD5")
val digest = md.digest(bytes)
for (byte in digest) print("%02x".format(byte))
println()
}
PHP
$string = "The quick brown fox jumped over the lazy dog's back";
echo md5( $string );
Python
Python 3.x, 2.5 and later 2.x versions
>>> import hashlib
>>> # RFC 1321 test suite:
>>> tests = (
(b"", 'd41d8cd98f00b204e9800998ecf8427e'),
(b"a", '0cc175b9c0f1b6a831c399e269772661'),
(b"abc", '900150983cd24fb0d6963f7d28e17f72'),
(b"message digest", 'f96b697d7cb7938d525a2f31aaf161d0'),
(b"abcdefghijklmnopqrstuvwxyz", 'c3fcd3d76192e4007dfb496cca67e13b'),
(b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 'd174ab98d277d9f5a5611c2c9f419d9f'),
(b"12345678901234567890123456789012345678901234567890123456789012345678901234567890", '57edf4a22be3c955ac49da2e2107b67a') )
>>> for text, golden in tests: assert hashlib.md5(text).hexdigest() == golden
>>>
Python 2.5 and later
>>> import hashlib
>>> print hashlib.md5("The quick brown fox jumped over the lazy dog's back").hexdigest()
e38ca1d920c4b8b8d3946b2c72f01680
Pre-2.5; removed in 3.x
>>> import md5
>>> print md5.md5("The quick brown fox jumped over the lazy dog's back").hexdigest()
e38ca1d920c4b8b8d3946b2c72f01680
Ruby
require 'digest'
Digest::MD5.hexdigest("The quick brown fox jumped over the lazy dog's back")
# => "e38ca1d920c4b8b8d3946b2c72f01680"