Green Cryptography: Cleaner Engineering through Recycling

"Green cryptography" is an implementation-centric design paradigm that advocates mature (that is, secure) and minimalist (that is, simple) implementations by recycling cryptographic primitives, components, and design strategies. To exemplify the merits of this recycling-based approach, the authors turn to the Advanced Encryption Standard and examine the pedigree of its predecessors, successors, and various other primitives that it recycles from and that recycle from it. To vouch for its viability as a secure strategy for cryptographic design, the authors also outline a framework for recycling the AES in both message encryption and message authentication, to achieve the strongest notions of confidentiality and integrity.