Using java to encrypt integers

Question

I\'m trying to encrypt some integers in java using java.security and javax.crypto.

The problem seems to be that the Cipher class only encrypts byte arrays. I can\'t d

Answer 1

My Simple Solution is that Encrypt Integer to the String by shifting ASCII Value of the Integer by the secret key you Provide.

Here is the Solution:

public String encodeDiscussionId(int Id) {

    String tempEn = Id + "";
    String encryptNum ="";
    for(int i=0;i

Steps to Encode:

1. Here, First you convert the Given Integer into String by: String temp = givenInt + ""
2. Scan each character of String, Read ASCII of that character and add it with secret key as 148113 in this case.
3. Convert shifted Integer into Character and concatenate to the String encryptNum and finally return it.

Steps to Decode:

1. Scan each character of String, Read ASCII of that character and subtract it with secret key as previous.
2. Convert that value to character and concatenate with decodeText.

As previous encode output is always String '???' and vary according to number of digits of input Id.