Basically Seperate CipherText into n character string array. it actually gives no idea about ciphertext but helps me to visualize what all this bunch of characters have.

CipherTextTools.java

import java.util.Arrays;

public class CipherTextTools {

	public static void main(String[] args) {
		String[] seperated = seperateCipher("igxcshavc4eslykamah71j8o0es7myk1", 8);
		System.out.println(Arrays.toString(seperated));
	}
	
	private static String[] seperateCipher(String cipher, int n) {
		int length = cipher.length();
		if (length % n == 0) {
			String[] seperatedCipher = new String[length / n];
			char[] characters = cipher.toCharArray();
			char[] cipherPart = new char[n];
			for (int i = 0; i < length; i++) {
				cipherPart[i % n] = characters[i];
				if (i % n == n-1) {
					seperatedCipher[i / n] = new String(cipherPart); 
				}
			}
			return seperatedCipher;	
		}
		else {
			int remainder = length % n;
			String[] seperatedCipher = new String[length / n + 1];
			char[] characters = cipher.toCharArray();
			char[] cipherPart = new char[n];
			for (int i = 0; i < length - remainder; i++) {
				cipherPart[i % n] = characters[i];
				if (i % n == n-1) {
					seperatedCipher[i / n] = new String(cipherPart); 
				}
			}
			cipherPart = new char[remainder];
			for (int i = 0; i + length - remainder < length; i++) {
				cipherPart[i] = characters[i + length - remainder];
			} 
			seperatedCipher[length / n] = new String(cipherPart);
			return seperatedCipher;	
		}
	}
	
	
}