"<p>Elgamal was formerly covered (indirectly) by a patent in the US, this has now expired.</p>",
"ECDSA is a digital signature algorithm with a key size of up to 521 bits.",
"ECDH is a key-agreement algorithm with a key size of up to 521 bits.",
"EDDSA is a digital signature scheme using a variant of Schnorr signature based on twisted Edwards curves."
"X25519 is a digital signature scheme using one of the fastest curves in ECC, and is not covered by any known patents."
"EDDSA is a digital signature scheme using a variant of Schnorr signature based on twisted Edwards curves.",
"X25519 is a digital signature scheme using one of the fastest curves in ECC, and is not covered by any known patents.",
"MD5 (only used for TLS 1.0/1.1)",
"SHA1 is a message digest/hash algorithm with a digest/hash size of 160 bits. This algorithm has poor long-term security prospects and should be deprecated in favour of SHA-2.",
"SHA2/SHA256 is a message digest/hash algorithm with a digest/hash size of 256 bits.",