Merge pull request #9 from gdbelvin/getpseudorandom

Suppport for GetPseudoRandom

.gitignore

@@ -1,2 +1,3 @@
 .idea
-*.iml
+*.iml
+*.swp

README.md

@@ -15,6 +15,7 @@ Currently the following commands are implemented:
  * Echo
  * ChangeAuthenticationKey
  * Authentication & Session related commands
+ * GetPseudoRandom
 
 Implementing new commands is really easy. Please consult `commands/constructors.go` and `commands/response.go` for reference.
 

commands/constructors.go

@@ -236,3 +236,15 @@ func CreateChangeAuthenticationKeyCommand(objID uint16, newPassword string) (*Co
 
 	return command, nil
 }
+
+func CreateGetPseudoRandomCommand(numBytes uint16) *CommandMessage {
+	command := &CommandMessage{
+		CommandType: CommandTypeGetPseudoRandom,
+	}
+
+	payload := bytes.NewBuffer([]byte{})
+	binary.Write(payload, binary.BigEndian, numBytes)
+	command.Data = payload.Bytes()
+
+	return command
+}

commands/response.go

@@ -137,6 +137,8 @@ func ParseResponse(data []byte) (Response, error) {
 		return parseDeriveEcdhResponse(payload)
 	case CommandTypeChangeAuthenticationKey:
 		return parseChangeAuthenticationKeyResponse(payload)
+	case CommandTypeGetPseudoRandom:
+		return parseGetPseudoRandomResponse(payload), nil
 	case ErrorResponseCode:
 		return nil, parseErrorResponse(payload)
 	default:
@@ -282,6 +284,10 @@ func parseChangeAuthenticationKeyResponse(payload []byte) (Response, error) {
 	return &ChangeAuthenticationKeyResponse{ObjectID: objectID}, nil
 }
 
+func parseGetPseudoRandomResponse(payload []byte) Response {
+	return payload
+}
+
 // Error formats a card error message into a human readable format
 func (e *Error) Error() string {
 	message := ""