Identity-Based Encryption with Conventional Public-Key Cryptography

This paper proposes an identity-based encryption (IBE) scheme based on traditional public-key cryptographic systems, such as RSA, DSA, Elgamal, etc. This scheme has a number of advantages over other systems. It can rely upon these traditional systems for its security. Since it uses these traditional encryption schemes, it is interoperable with and easily embedded within an existing security system that uses these functions. Additionally, its construction as an on-line system avoids the operational security flaws of IBE systems that allow off-line key generation.