Leading PQC Algorithms

1. Lattice-Based Cryptography

Secure and efficient. Used in:

• CRYSTALS-Kyber (Encryption)

• CRYSTALS-Dilithium (Digital Signatures)

2. Code-Based Cryptography

• Classic McEliece: Large keys, long-term security

3. Hash-Based Cryptography

• SPHINCS+: Strong, simple, but large signature sizes

4. Multivariate Polynomial Cryptography

• Rainbow: Now deprecated due to recent attacks

5. Isogeny-Based Cryptography

• SIKE: Once promising, now broken

 Each method has strengths and weaknesses. Ongoing research is key!