finished all features

Go/otp_decrypt/otp_decrypt.go

@@ -0,0 +1,47 @@
+package otpdecrypt
+
+import (
+	"strings"
+	"one-time-pad-utils/pad_definitions"
+)
+
+func OTPDecrypt(message string, key string) string {
+	message = strings.Replace(message, " ", "", -1)
+	messagesplit := strings.Split(message,"")
+	var messagesplitint []int
+
+	key = strings.Replace(key, " ", "", -1)
+	keysplit := strings.Split(key,"")
+	var keysplitint []int
+
+	for _, char := range messagesplit {
+		for n, c := range paddefinitions.NumToCharMap{
+			if c == strings.ToUpper(char) {
+				messagesplitint = append(messagesplitint, n)
+			
+			}
+		}
+	}
+	
+	for _, char := range keysplit {
+		for n, c := range paddefinitions.NumToCharMap{
+			if c == strings.ToUpper(char) {
+				keysplitint = append(keysplitint, n)
+			
+			}
+		}
+	}
+
+	if len(keysplitint) < len(messagesplitint) {
+		return ("KEY TOO SHORT TO DECRYPT MESSAGE")
+	}
+
+	var decryptedmessage []string
+
+	for pos, messagenum := range messagesplitint{
+		decryptedmessage = append(decryptedmessage, paddefinitions.NumToCharMap[(((messagenum - keysplitint[pos]) % 35) + 35) % 35]) // crazy modulo for decryption
+
+	}
+
+	return (strings.Join(decryptedmessage, ""))
+}