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@@ -115,8 +115,8 @@ public class ROT13 {
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public void publicPrivateKeyPair() throws NoSuchProviderException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
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//Create a Key Pair Generator
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- KeyPairGenerator keyGenAlice = KeyPairGenerator.getInstance("DSA","SUN");
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- KeyPairGenerator keyGenBob = KeyPairGenerator.getInstance("DSA", "SUN");
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+ KeyPairGenerator keyGenAlice = KeyPairGenerator.getInstance("RSA");
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+ KeyPairGenerator keyGenBob = KeyPairGenerator.getInstance("RSA");
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//Initialize the Key Pair Generator
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SecureRandom random = SecureRandom.getInstance("SHA1PRNG", "SUN");
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@@ -145,18 +145,16 @@ public class ROT13 {
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"When in eternal lines to time thou grow’st:\n" +
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" So long as men can breathe or eyes can see,\n" +
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" So long lives this, and this gives life to thee.\n";
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- Key aesKey = new SecretKeySpec(pubAlice.toString().getBytes(), "AES");
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+
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+ //encrypt
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Cipher cipher = Cipher.getInstance("RSA");
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- cipher.init(Cipher.ENCRYPT_MODE, privAlice);
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+ cipher.init(Cipher.PUBLIC_KEY, pubAlice);
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byte[] encrypted = cipher.doFinal(expected.getBytes());
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String enc = new String(Base64.getEncoder().encodeToString(encrypted));
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System.err.println("Encrypted: " + enc);
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- //During the decryption (Java 8):
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-
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- System.out.print("Enter ciphertext: ");
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- encrypted = Base64.getDecoder().decode(enc);
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- cipher.init(Cipher.DECRYPT_MODE, aesKey);
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+ //decrypt
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+ cipher.init(Cipher.PRIVATE_KEY, privAlice);
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String decrypted = new String(cipher.doFinal(encrypted));
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System.err.println("Decrypted: " + decrypted);
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}
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