peerNode/cryptotest.html at master · PeerBay/peerNode · GitHub

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<html>

<head></head>
<body>


<script src="https://raw.githubusercontent.com/tonyg/js-nacl/master/lib/nacl_factory.js"></script>
<script>
  var nacl = nacl_factory.instantiate();

function create_keys(password){
	password = nacl.crypto_hash_string(password).subarray(0, 32);
	return skp = nacl.crypto_sign_keypair_from_seed(password)
}
function encrypt_with_secret_key(msg,secret_key){
	m = nacl.encode_utf8(msg);
	return nacl.crypto_sign(m, secret_key);
}
function decrypt_with_public_key(crypt_msg,public_key){
	m1 = nacl.crypto_sign_open(crypt_msg,public_key);
	return nacl.decode_utf8(m1);
}
keys=create_keys("password")
public_key=keys.signPk
secret_key=keys.signSk
message="this is my message to the world"
crypt_msg=encrypt_with_secret_key(message,secret_key)
console.log(crypt_msg)
msg=decrypt_with_public_key(crypt_msg,public_key)
console.log(msg)
</script>

</body>
</html>