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module main
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import encoding.hex
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import encoding.base64
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import crypto.ed25519
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// adapted from https://asecuritysite.com/signatures/ed25519
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fn main() {
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	msg := 'Hello Girl'
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	publ, priv := ed25519.generate_key()!
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	m := msg.bytes()
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	sig := ed25519.sign(priv, m)!
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	println('=== Message ===')
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	println('Msg: ${msg} \nHash: ${m}')
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	println('=== Public key ===')
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	println('Public key (Hex): ${hex.encode(publ)}')
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	println('   Public key (Base64): ${base64.encode(publ)}')
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	println('=== Private key ===')
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	println('Private key: ${priv.seed().hex()}') // priv[0:32]
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	println('   Private key (Base64): ${base64.encode(priv.seed())}') // priv[0:32]
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	println('   Private key (Base64) Full key:  ${base64.encode(priv)}')
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	println('   Private key (Full key in Hex): ${hex.encode(priv)}')
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	println('=== signature (R,s) ===')
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	println('signature: R=${sig[0..32].hex()} s=${sig[32..64].hex()}')
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	println('   signature (Base64)=${base64.encode(sig)}')
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	rtn := ed25519.verify(publ, m, sig)!
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	if rtn {
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		println('Signature verified :${rtn}')
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	} else {
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		println('signature does not verify :${!rtn}')
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	}
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}
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