I hope let’e encrypt could issue EDDSA certificates as the recently published RFC Proposed Standard Algorithm Identifiers for Ed25519, Ed448, X25519, and X448 for Use in the Internet X.509 Public Key Infrastructure and The Transport Layer Security (TLS) Protocol Version 1.3 allow EDDSA to be the TLS…

The RFC status is of course a good step in the right direction, but Let’s Encrypt is bound by the CA/B Forum Baseline Requirements , the rules a public CA needs to adher to be trusted in browsers. In section 6.1.5. “Key Sizes” you can read about the key algorithms (and their key lengths) allowed in …

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