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MD5 (Read 1220 times)
austingriffith
MD5
Sep 8th, 2006, 12:37am  
This may be a dumb question but is there a MD5() compression function?
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austingriffith
Re: MD5
Reply #1 - Sep 8th, 2006, 12:45am  
is there MessageDigest stuff?
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toxi
Re: MD5
Reply #2 - Sep 8th, 2006, 6:17pm  
sure, it's built into Java. you can use it like this:

Code:
void setup() {
  byte[] md5hash = messageDigest("hello world!","MD5");
  for(int i=0; i<md5hash.length; i++) print(hex(md5hash[i],2)+":");
}

byte[] messageDigest(String message, String algorithm) {
  try {
  java.security.MessageDigest md = java.security.MessageDigest.getInstance(algorithm);
  md.update(message.getBytes());
  return md.digest();
  } catch(java.security.NoSuchAlgorithmException e) {
    println(e.getMessage());
    return null;
  }
}


You can also use other digest algoritms, e.g. SHA-1. Google for more... Wink
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austingriffith
Re: MD5
Reply #3 - Sep 9th, 2006, 12:07am  
thanks a lot!
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Ruben Barkow
Re: MD5
Reply #4 - Jul 14th, 2009, 11:31am  
toxi wrote on Sep 8th, 2006, 6:17pm:
 byte[] md5hash = messageDigest("hello world!","MD5");
 for(int i=0; i<md5hash.length; i++) print(hex(md5hash[i],2)+":");

this writes a hexa code like
ff:df:3f:df:2a:.....

but how do i get an MD5-string like
4a492adb6b7fd95ea729e375b93f0da3
Huh
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Ruben Barkow
Re: MD5
Reply #5 - Jul 14th, 2009, 11:37am  
forget it!

i just found out, that md5 is always just hexadecimal numbers Cheesy

so its the Code:
 
byte[] md5hash = messageDigest(filename,"MD5");
String md5string="";
for(int i=0; i<md5hash.length; i++) md5string+=(hex(md5hash[i],2));
print(md5string.toLowerCase());
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