Anonymous Multireceiver Identity-Based Encryption against Chosen-Ciphertext Attacks with Tight Reduction in the Standard Model

Table 1

The notations.

	The cost of a scalar operation in
	The cost of a scalar operation in
	The cost of a pairing operation
	The cost of a Map-To-Point function
bits	The length of a symmetric key/symmetric ciphertext
bits	The length of the output of a hash function
bits	The length of an element in
bits	The length of an element in
bits	The length of an element in
bits	The length of an identity
ROM/STD	The random oracle model/the standard model
Ful/Sel	The full-ID model/The selective-ID model
Ours	The proposed AMRIBE