DSA & ECDSA Signature Schemes
Compare RSA signatures with DSA and the elliptic-curve variant.
Welcome
DSA and ECDSA are alternative signature schemes using discrete logarithm hardness. ECDSA dominates modern systems with smaller keys and faster operations.
DSA Overview
DSA (NIST, 1994) uses a cyclic group of prime order q within Z*p. Key generation: private key x; public key y = g^x mod p. Standard: 2048-bit p, 256-bit q.
All lessons in this course
- What Is a Digital Signature?
- RSA Signatures: Sign & Verify
- DSA & ECDSA Signature Schemes
- Signatures in the Wild: Code Signing & Email