Sunday, March 22, 2009

CryptPad by tukul

Download My CryptPad -Tukul Code here or zipped file here. Or form the downloads section on the right. It is a light weight tool to encrypt text suitable for posting on chat sites, twits, emails, and to encrypt any text file too.
I will refine and add features soon. You can copy paste the encrypted text from the start of the Edit field into any browser window etc or chat site.
Please DO NOT add leading spaces when copy pasting text from web pages. One has to delete previous message as one can not copy paste from the middle of the file as decryption requires the exact same (entire) message and password.
You can ask your friend to download CryptPad, encrypt a message on your computer, and post your message on the chat room, twit, blog etc. Your friend has to Clear all and then click PASTE button in CrytPad, then to Decrypt, has to enter same password as used to Encrypt, press Decrypt Button.
You can use long passwords like- 'This is my very long password', but remember passwords are case sensitive. You can also use !@#$%^&*() characters.
If incorrect password is used to decrypt (and you get garbled output) you can undo by encrypting by same (incorrect) password, then change or rectify password and decrypt again.
To test please copy the following 2 encrypted lines as is , then click PASTE button in CryptPad and then type the password "tukul is a good boy" in the password field, click decrypt.
J_VjmtZ[uZb[Vp]bWp^e[R[mcdtUXl^]
JJptellcWlPtuKj\pDUgXh\h\xv^mPVtH!Y`dZ!G`hc\[ka!Li!Zx`~_UfXZ^dfc`QfxWmRh\a`Z/G`h

PLZ post comments to report bugs/blunders.
Also you can play around and encrypt twice or thrice with same or different passwords !!
To decrypt type same passwords though the sequence can be different!

You can also decrypt first and recipient can encrypt with same password sequence to get original text back.

2 comments:

Ben S said...

How secure is the encryption.
Could u share the algorithm please
benst186@gmail.com

Anonymous said...

It works great.