message: Add account keys in key::
diff: @@ -14,6 +14,10 @@ pub type SpendingPublicKey = crypto::PublicKey<crypto::Ed25519Extended>;
  pub type SpendingSecretKey = crypto::SecretKey<crypto::Ed25519Extended>;
  pub type SpendingSignature<T> = crypto::Signature<T, crypto::Ed25519Extended>;
  +pub type AccountPublicKey = crypto::PublicKey<crypto::Ed25519Extended>;
  +pub type AccountSecretKey = crypto::SecretKey<crypto::Ed25519Extended>;
  +pub type AccountSignature<T> = crypto::Signature<T, crypto::Ed25519Extended>;
  +
  fn chain_crypto_pub_err(e: crypto::PublicKeyError) -> ReadError {
  match e {
  crypto::PublicKeyError::SizeInvalid => {
  