A Signature Fit for a Post Quantum Era: Dilithium-Ed25519

And, so, RSA has existed for nearly five decades, and ECC (Elliptic Curve Cryptography) for over two decades. As the Diffie-Hellman key exchange is open to an Eve-in-the-Middle, we thus need a digital signature from RSA or ECC (ECDSA or EdDSA) to verify the Web site we are connecting to. Without this signature, we could not trust the connection to any site.