


How do I use 3DES encryption/decryption in Java without Base64 encoding?
Issue:
A user's Java code for 3DES encryption and decryption fails to decrypt the encoded data back to the original string. Despite removing Base64 encoding and decoding, the code still encounters issues.
Solution:
Upon reviewing the provided code, it appears that the error may not lie in the Base64 encoding or decoding process but rather in the handling of the byte array output from the encryption process.
Revised Code:
The following revised code includes minor cleanup and correctly displays "kyle boon" as the decoded string:
import java.security.MessageDigest; import java.util.Arrays; import javax.crypto.Cipher; import javax.crypto.SecretKey; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; public class TripleDESTest { public static void main(String[] args) throws Exception { String text = "kyle boon"; byte[] codedtext = new TripleDESTest().encrypt(text); String decodedtext = new TripleDESTest().decrypt(codedtext); System.out.println(codedtext); // this is a byte array, you'll just see a reference to an array System.out.println(decodedtext); // This correctly shows "kyle boon" } public byte[] encrypt(String message) throws Exception { final MessageDigest md = MessageDigest.getInstance("md5"); final byte[] digestOfPassword = md.digest("HG58YZ3CR9".getBytes("utf-8")); final byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24); for (int j = 0, k = 16; j
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