mhe / jspaillier Goto Github PK

The implementation still seems to have issues where two of the inputs are negative numbers. You can reproduce it by specifying A and B or A and C as negative.

Please update your jsbn to the most recent version (v1.4). The version you are using suffers from incompatible use of DV in the jsbn code.

You can reproduce the bug by providing either A or B as a negative number in the demo page. In Firebug, you'll see the error message ReferenceError: DV is not defined in jsbn.js (line 121).

Does your code include the improvement mentioned by Wikipedia?

Paillier and Pointcheval however went on to propose an improved cryptosystem that incorporates the combined hashing of message m with random r. Similar in intent to the Cramer-Shoup cryptosystem, the hashing prevents an attacker, given only c, from being able to change m in a meaningful way. Through this adaptation the improved scheme can be shown to be IND-CCA2 secure in the random oracle model.

The result of encrypting 2 + -4, during decryption, will instead be the sum of the public key and the negative integer total.

Can this be used on strings/objects and other non number types or does that not even make sense?