diff options
Diffstat (limited to 'security-util-lib/src/main/java/org/onap')
| -rw-r--r-- | security-util-lib/src/main/java/org/onap/sdc/security/CipherUtil.java | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/security-util-lib/src/main/java/org/onap/sdc/security/CipherUtil.java b/security-util-lib/src/main/java/org/onap/sdc/security/CipherUtil.java index a51d3ff..ba8665a 100644 --- a/security-util-lib/src/main/java/org/onap/sdc/security/CipherUtil.java +++ b/security-util-lib/src/main/java/org/onap/sdc/security/CipherUtil.java @@ -22,7 +22,9 @@ package org.onap.sdc.security; import java.security.SecureRandom; +import java.util.Arrays; import javax.crypto.Cipher; +import javax.crypto.spec.GCMParameterSpec; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import org.apache.commons.codec.binary.Base64; @@ -35,11 +37,12 @@ import org.onap.sdc.security.logging.wrappers.Logger; public class CipherUtil { private static Logger log = Logger.getLogger( CipherUtil.class.getName()); private static final String ALGORITHM = "AES"; - private static final String ALGORYTHM_DETAILS = ALGORITHM + "/CBC/PKCS5PADDING"; + private static final String ALGORYTHM_DETAILS = ALGORITHM + "/GCM/NoPadding"; private static final String CIPHER_PROVIDER = "SunJCE"; - private static final int BLOCK_SIZE = 128; - private static final int BYTE_SIZE = 8; - private static final int IV_SIZE = BLOCK_SIZE / BYTE_SIZE; + + public static final int GCM_TAG_LENGTH = 16; + public static final int GCM_IV_LENGTH = 12; + private static final byte[] EMPTY_BYTE_ARRAY = new byte[0]; private static final String ALGORITHM_NAME = "SHA1PRNG"; @@ -53,14 +56,15 @@ public class CipherUtil { */ public static String encryptPKC(String value, String base64key) throws CipherUtilException { Cipher cipher; - byte[] iv = new byte[IV_SIZE]; + byte[] iv = new byte[GCM_IV_LENGTH]; byte[] finalByte; try { cipher = Cipher.getInstance(ALGORYTHM_DETAILS, CIPHER_PROVIDER); SecureRandom secureRandom = SecureRandom.getInstance(ALGORITHM_NAME); secureRandom.nextBytes(iv); - IvParameterSpec ivspec = new IvParameterSpec(iv); - cipher.init(Cipher.ENCRYPT_MODE, getSecretKeySpec(base64key), ivspec); + GCMParameterSpec spec = + new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, iv); + cipher.init(Cipher.ENCRYPT_MODE, getSecretKeySpec(base64key), spec); finalByte = cipher.doFinal(value.getBytes()); } catch (Exception ex) { @@ -87,9 +91,11 @@ public class CipherUtil { byte[] decrypted; try { cipher = Cipher.getInstance(ALGORYTHM_DETAILS, CIPHER_PROVIDER); - IvParameterSpec ivspec = new IvParameterSpec(subarray(encryptedMessage, 0, IV_SIZE)); - byte[] realData = subarray(encryptedMessage, IV_SIZE, encryptedMessage.length); - cipher.init(Cipher.DECRYPT_MODE, getSecretKeySpec(base64key), ivspec); + byte[] initVector = Arrays.copyOfRange(encryptedMessage, 0, GCM_IV_LENGTH); + GCMParameterSpec spec = + new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, initVector); + byte[] realData = subarray(encryptedMessage, GCM_IV_LENGTH, encryptedMessage.length); + cipher.init(Cipher.DECRYPT_MODE, getSecretKeySpec(base64key), spec); decrypted = cipher.doFinal(realData); } catch (Exception ex) { |