Encoding formats for XDH private keys.
DER encoding of PrivateKeyInfo (PKCS#8) as defined in RFC 8410.
PrivateKeyInfo
JSON Web Key format as defined in RFC 8037.
PEM encoding of PrivateKeyInfo (PKCS#8) as defined in RFC 8410.
Raw key encoding as defined in RFC 7748.
A human-readable name identifying this encoding format.