SequenceHash: multihashing for the rest of us
Multihashing is a cryptographic technique that is often overlooked by developers, but it plays a crucial role in ensuring the security of various systems. Trail of Bits aims to simplify multihashing with SequenceHash and SequenceMAC, a pair of hash constructions that work with any secure cryptographic hash function, not just Keccak.
These constructions address the security concerns that can arise from ambiguous input encodings and make it easier for developers to use multihashing in their projects. The open-source specification is part of the Community Cryptography Specification Project (C2SP). SequenceHash and SequenceMAC are designed to be versatile and work seamlessly with popular hash functions such as SHA256, BLAKE, and RIPEMD. They also support keys longer than 32 bytes, making them suitable for a wide range of applications.
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