An Efficient Framework for Sharing a File in a Secure Manner Using Asymmetric Key Distribution Management in Cloud Environment

Table 2

Homomorphic encryption cryptosystems.

Characteristics	RSA	Paillier	ElGamal
Platform	Cloud computing	Cloud computing	Cloud computing
Homomorphic type	Multiplicative	Additive	Multiplicative
Asymmetric in nature	Yes	Yes	Yes
Data privacy	All ensures privacy both in communication and storage (data at rest)
Data security	Yes	Yes	Yes
Key used by	Separate keys are used for encrypt/decrypt either by customer/provider
Speed (enc/dec)	Fast/slow	Slow/slow	Slow/fast