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authorDeterme, Sebastien (sd378r) <sd378r@intl.att.com>2018-02-14 15:17:45 +0100
committerDeterme, Sebastien (sd378r) <sd378r@intl.att.com>2018-02-14 15:17:45 +0100
commit454936e900890e77adc9a1450e5bcb01d0c90823 (patch)
tree9185f80b490043420115c75fb4edcf7c7c321a55 /src
parentd3f598c1558efa80b02317bfef68e3122a3d57b6 (diff)
Rework the comment
Rework the comments and variable names of CryptoUtils class Issue-ID: CLAMP-85 Change-Id: I45b94329f94ffbd6034384ccc63dea049aa95cb2 Signed-off-by: Determe, Sebastien (sd378r) <sd378r@intl.att.com>
Diffstat (limited to 'src')
-rw-r--r--src/main/java/org/onap/clamp/clds/util/CryptoUtils.java20
1 files changed, 12 insertions, 8 deletions
diff --git a/src/main/java/org/onap/clamp/clds/util/CryptoUtils.java b/src/main/java/org/onap/clamp/clds/util/CryptoUtils.java
index 120ac1d00..8cdedf6f1 100644
--- a/src/main/java/org/onap/clamp/clds/util/CryptoUtils.java
+++ b/src/main/java/org/onap/clamp/clds/util/CryptoUtils.java
@@ -53,13 +53,14 @@ public final class CryptoUtils {
private static final EELFLogger logger = EELFManager.getInstance().getLogger(CryptoUtils.class);
// Openssl commands:
// Encrypt: echo -n "123456" | openssl aes-128-cbc -e -K <Private Hex key>
- // -iv <16 Hex Bytes iv> | xxd -u -g100
+ // -iv <16 Bytes iv (HEX), be careful it's 32 Hex Chars> | xxd -u -g100
// Final result is to put in properties file is: IV + Outcome of openssl
// command
// ************************************************************
// Decrypt: echo -n 'Encrypted string' | xxd -r -ps | openssl aes-128-cbc -d
// -K
- // <Private Hex Key> -iv <16 Bytes IV extracted from Encrypted String>
+ // <Private Hex Key> -iv <16 Bytes IV extracted from Encrypted String, be
+ // careful it's 32 Hex Chars>
/**
* Definition of encryption algorithm.
*/
@@ -68,8 +69,11 @@ public final class CryptoUtils {
* Detailed definition of encryption algorithm.
*/
private static final String ALGORITHM_DETAILS = ALGORITHM + "/CBC/PKCS5PADDING";
- private static final int BLOCK_SIZE_IN_BITS = 128;
- private static final int BLOCK_SIZE_IN_BYTES = BLOCK_SIZE_IN_BITS / 8;
+ private static final int IV_BLOCK_SIZE_IN_BITS = 128;
+ /**
+ * An Initial Vector of 16 Bytes, so 32 Hexadecimal Chars.
+ */
+ private static final int IV_BLOCK_SIZE_IN_BYTES = IV_BLOCK_SIZE_IN_BITS / 8;
/**
* Key to read in the key.properties file.
*/
@@ -97,9 +101,9 @@ public final class CryptoUtils {
* @throws UnsupportedEncodingException
* In case of issue with the charset conversion
*/
- public static String encrypt(String value) throws GeneralSecurityException, UnsupportedEncodingException {
+ public static String encrypt(String value) throws GeneralSecurityException {
Cipher cipher = Cipher.getInstance(ALGORITHM_DETAILS, "SunJCE");
- byte[] iv = new byte[BLOCK_SIZE_IN_BYTES];
+ byte[] iv = new byte[IV_BLOCK_SIZE_IN_BYTES];
SecureRandom.getInstance("SHA1PRNG").nextBytes(iv);
IvParameterSpec ivspec = new IvParameterSpec(iv);
cipher.init(Cipher.ENCRYPT_MODE, SECRET_KEY_SPEC, ivspec);
@@ -121,8 +125,8 @@ public final class CryptoUtils {
public static String decrypt(String message) throws GeneralSecurityException, DecoderException {
byte[] encryptedMessage = Hex.decodeHex(message.toCharArray());
Cipher cipher = Cipher.getInstance(ALGORITHM_DETAILS, "SunJCE");
- IvParameterSpec ivspec = new IvParameterSpec(ArrayUtils.subarray(encryptedMessage, 0, BLOCK_SIZE_IN_BYTES));
- byte[] realData = ArrayUtils.subarray(encryptedMessage, BLOCK_SIZE_IN_BYTES, encryptedMessage.length);
+ IvParameterSpec ivspec = new IvParameterSpec(ArrayUtils.subarray(encryptedMessage, 0, IV_BLOCK_SIZE_IN_BYTES));
+ byte[] realData = ArrayUtils.subarray(encryptedMessage, IV_BLOCK_SIZE_IN_BYTES, encryptedMessage.length);
cipher.init(Cipher.DECRYPT_MODE, SECRET_KEY_SPEC, ivspec);
byte[] decrypted = cipher.doFinal(realData);
return new String(decrypted);