Chris,
what you mean when you say hash value ? thanks.
shuaib
----- Original Message -----
From: "Chris Pratt" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, July 19, 2001 12:22 PM
Subject: Re: MD5 example
> You don't, it's a one-way hash algorithm. The normal way to use it is to
> store the hash value of the user's password (or whatever you want to hash)
> in some persistent store, then when the user returns and re-enters his
> password, hash that and compare the two hash values. If they match the
user
> is golden, if not ask them to try again.
> (*Chris*)
>
> ----- Original Message -----
> From: "Sharon Rose Orillaneda" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Wednesday, July 18, 2001 11:07 PM
> Subject: Re: [JSP-INTEREST] MD5 example
>
>
> > Do you know how to decrypt MD5?
> > Thanks
> > -Sharon
> >
> > -----Original Message-----
> > From: A mailing list about Java Server Pages specification and reference
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Ashish Shrestha
> > Sent: Thursday, 19 July 2001 2:04 PM
> > To: [EMAIL PROTECTED]
> > Subject: MD5 example
> >
> >
> > Dear Hardeep,
> >
> > I have included an example of MD5 for you.
> > If you want to use the 16 byte data instead of convert it to hex string
> > just return the md5.digest().
> >
> > Hope this helps.
> >
> > Ashish
> > http://headlines.sourceforge.net
> >
> > /**
> > Generate a MD5 digest and return as hex.
> >
> > @param s String for which MD5 is to be generated.
> > @returns 32 character hex representation of the MD5
> > digest.
> > */
> > public static String md5Hex(String s)
> > throws NoSuchAlgorithmException{
> >
> > MessageDigest md5 = MessageDigest.getInstance("MD5");
> > md5.update(s.getBytes());
> >
> > return bytesToHexString(md5.digest());
> > }
> >
> > public static String bytesToHexString(byte[] b){
> > char[] hexChars = {'0','1','2','3','4','5','6','7',
> > '8','9','A','B','C','D','E','F'};
> >
> > StringBuffer hexString = new StringBuffer();
> >
> > for (int i = 0; i < b.length; i++){
> > hexString.append(hexChars[(b[i] >> 4) & 0x0f]);
> > hexString.append(hexChars[b[i] & 0x0f]);
> > }
> >
> > return hexString.toString();
> > }
> >
> >
>
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