ComputePublicKey will compute a key based on the secret.

ComputeSharedKey compute a shareKey based on two keys.

DecryptPayload will decrypt a payload based on a key and nonce.

EncryptPayload will encrypt payload based on a key and nonce.

GenerateKeys will generate key/pub and save into file.

GetPrivateKey will get the pk for a pub.

GetPublicKeys will get all pubs in memory.

NewRandomKey generate new key.

NewRandomNonce generate new nonce.

PutKeyPair will put a pair into pairs var.

WritePrivateKeyFile creates a json file with the private key.

WritePublicKeyFile creates a file with the pubKey.

KeyPair holds PrivateKey and PublicKey.