We introduce the first universally anonymous, thus key-private, IBE whose security is based on the standard quadratic residuosity assumption. Our scheme is a variant of Cocks IBE (which is not anonymous) and is efficient and highly parallelizable.
The first universally anonymous IBE scheme appeared in REF .
Universally Anonymous IBE based on the Quadratic Residuosity Assumption ∗
IACR Cryptology ePrint Archive
IACR Cryptology ePrint Archive
Computer Science Mathematics