intertwingly

You can honestly take my name out of that code now - it has little to do with anything I contributed, really. Adding types to someone else's script and then giving it to you to clean up and make work does not equal a contribution. :-)

Nice job Sam! Now if I can just get the freakin app to work.

-Russ

Sam Ruby: Base64 of SHA1 for J2ME...

I think there's a typo in the code

  result[i] = base64[(((words[word] & 0x03) << 4) |
  ((words[word+1] >> 28) & 0x1F)) & 0x3F];

should be:

  result[i] = base64[(((words[word] & 0x03) << 4) |
  ((words[word+1] >> 28) & 0x0F)) & 0x3F];

i.e the 0x1F constant should be 0x0F

It is said that "Many Eyes Make All Bugs Shallow".

This indeed was in error.  Fixed.  Thanks!

In case anybody find this code handy, I've added an explicit BSD license to the source.

Sam Ruby has come up with a little treat for Java enabled cell phone users that are plagued with limited memory....... [more]

Trackback from Lockergnome's Web Developers

Another typo... I'm pretty sure that's not JavaScript. ;)

Matt: thanks!  Fixed.

SHA 1 for J2ME...

Does not work with binary files.
I found another solution. Go and see Bouncy Castle Java lightweight implementation.
[link]

Hi,

Many thanks for this implementation.
Would you be kind enough to help me get the hash as a byte array ?
Just as the MessageDigest.getInstance("SHA-1").digest();
would do in regular J2SE Java.

I’m not an expert in crypto and I cant figure out where to do that in your code.

I’ve been trying to convert the Base64 String you return to a byte[] but the result for a given string doesn’t match with the one given by MessageDigest ...

Any help greatly appreciated ! :)

Cheers,

Alex

Hello all, Is there a way in j2me to “calculate” the SHA1 Fingerprint of a Server SSL Certificate that it is exchange during an HttpsConnection? i know that there is only custom implementations of sha1 algorithm in j2me like...

I found the problem in this part:
blks[i >> 2] |= x[i] << (24 - (i % 4) * 8);

To create the correct hash, we must correctly convert BYTE to INT:
blks[i >> 2] |= (x[i] & 0x0FF) << (24 - (i % 4) * 8);