Winternitz Signatures (one-time signatures)

Notebooks

• Naive 4 bit Winternitz Signatures: Simple example implementation of Winternitz one-time signatures for 4 bit numbers (signatures can be forged)
• Secure 4 bit Winternitz Signatures: Simple example implementation of Winternitz one-time signatures for 4 bit numbers (signatures cannot be forged)
• 256 bit Winternitz Signatures: Example implementation of Winternitz one-time signatures for 256 bit message hashes

Benchmarks

• Hash Chain Benchmarks: Benchmark of hash chains using different hash functions

Interface Images

• Generate Keypair
• Sign Message
• Verify Signature

References:

• A Certified Digital Signature by Ralph C. Merkle: Contains implementation of Winternitz one-time signatures.
• Updated W-OTS: Winternitz one-time signatures using a parameterized family of functions
• W-OTS+: Shorter Signatures for Hash-Based Signature Schemes
• Hash-Based Signatures Part I: One-Time Signatures (OTS): Extremely helpful blog post by David Wong on the topic