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Diffie-Hellman
Diffie-Hellman
A key exchange protocol enabling two parties to establish a shared secret over an insecure channel.
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Elliptic Curve Cryptography. Implements ECDSA signing and verification over the NIST P-256 curve.
Diffie-Hellman key exchange over Curve448 (RFC 7748) — the higher-security sibling of X25519, targeting ~224-bit security with 56-byte keys instead of X25519's 32-byte keys.
Post-quantum key encapsulation (NIST FIPS 203, formerly Kyber), based on the Module Learning With Errors lattice problem — secure against both classical and quantum attackers, unlike every other asymmetric module here.
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