@spec decrypt(binary(), binary(), binary()) :: String.t()

Decrypt message with ECDH from seckey and pubkey (automatically extracts IV from message)

@spec encrypt(String.t(), binary(), binary()) :: binary()

Encrypt message with ECDH from seckey and pubkey and append randomly generated IV

@spec pubkey(seckey :: binary()) :: binary()

Get pubkey (hex encoded) from seckey (hex encoded)

Example:

iex> Nostr.Crypto.pubkey("1111111111111111111111111111111111111111111111111111111111111111")
"4f355bdcb7cc0af728ef3cceb9615d90684bb5b2ca5f859ab0f0b704075871aa"

@spec sign(data :: binary(), seckey :: binary()) :: binary()

Sign binary data (hex encoded) with seckey (hex encoded)