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Well, because it's not just Go. I want other languages to be able to use these. Other languages maybe don't regard ed25519 as a byte array. So I could tell the world "I invented a way to serialize keys, please use it" or I could say "I used the standard ASN.1/foobar to serialize them so you can use standard libraries to deserialize them."

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If there's a language that doesn't take 32 byte strings and give you an Ed25519 public key or private key, please do point me to it and I will message the maintainer. We're basically all on the same Slack :)

Here's what I ended up doing in Java: https://github.com/timbray/blueskidjava/blob/main/src/com/te...

sigh

If you can't find the word Factory in a Java snippet, is it really Java?

You are not inventing new way of serializing them, byte arrays are what ed25519 keys are. In fact, by using ASN.1 you are making it more complicated to use and increase attack surface as one now needs an ASN.1 library in addition to an ed25519 library.

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