Editing Paillier cryptosystem (section)

====Electronic cash====
Another feature named in paper is the notion of self-[[Blinding (cryptography)|blinding]]. This is the ability to change one ciphertext into another without changing the content of its decryption. This has application to the development of [[ecash]], an effort originally spearheaded by [[David Chaum]]. Imagine paying for an item online without the vendor needing to know your credit card number, and hence your identity. The goal in both electronic cash and electronic voting, is to ensure the e-coin (likewise e-vote) is valid, while at the same time not disclosing the identity of the person with whom it is currently associated.