The value returned from the java.security.MessageDigest.digest() call
(*Chris*)
----- Original Message -----
From: "cupid1" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, July 19, 2001 1:06 PM
Subject: Re: [JSP-INTEREST] MD5 example
> 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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>
===========================================================================
> To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
JSP-INTEREST".
> For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST
DIGEST".
> Some relevant FAQs on JSP/Servlets can be found at:
>
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
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To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST".
Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
