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I'm trying to use a java implementation of ed25519.

In the code, I can't find any functions that generate keys.

My experience with cryptography is limited to about three weeks of asking questions on stack.

Does the code generate keys? If so, which function?

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Ed25519 is a specific implementation of EdDSA using the Twisted Edwards curve:

x^2 + y^2 = 1 + (121665/121666) * (x^2)(y^2)

It's known as high speed high security signature algorithm. For using the code you pointed out, you need to feed sk, pk, m, sm.

So first you need to call publickey function with sk, then call signature function with m, sk and pk. PK is byte array returned from publickey function.

An example entry:

9d61b19deffd5a60ba844af492ec2cc44449c5697b326919703bac031cae7f60d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a:d75a980182b10ab7d54bfed3c964073a0ee172f3daa62325af021a68f707511a::e5564300c360ac729086e2cc806e828a84877f1eb8e5d974d873e065224901555fb8821590a33bacc61e39701cf9b46bd25bf5f0595bbe24655141438e7a100b:

It's sk:pk:m:sm

You can find more info at: http://ed25519.cr.yp.to/index.html

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