This project develops a comprehensive proof construction and verification framework for a well-defined class of cryptographic protocols: attribute-based cryptosystems. In particular, existing automated proof construction and verification frameworks, such as EasyCrypt and CryptoVerif, are extended to provide support for attribute-based cryptography. The extensions consist of libraries of simple transformations, algebraic manipulations, commonly used abstractions and constructs, and proof strategies, which will help in generation and verification of proofs in attribute-based cryptography.