diff options
Diffstat (limited to 'security-util-lib')
| -rw-r--r-- | security-util-lib/src/main/java/org/onap/sdc/security/SecurityUtil.java | 167 |
1 files changed, 66 insertions, 101 deletions
diff --git a/security-util-lib/src/main/java/org/onap/sdc/security/SecurityUtil.java b/security-util-lib/src/main/java/org/onap/sdc/security/SecurityUtil.java index 099ca0a..9a01407 100644 --- a/security-util-lib/src/main/java/org/onap/sdc/security/SecurityUtil.java +++ b/security-util-lib/src/main/java/org/onap/sdc/security/SecurityUtil.java @@ -24,50 +24,44 @@ import static java.nio.charset.StandardCharsets.UTF_8; import fj.data.Either; import java.io.UnsupportedEncodingException; -import java.security.InvalidAlgorithmParameterException; import java.security.InvalidKeyException; import java.security.Key; import java.security.NoSuchAlgorithmException; -import java.security.SecureRandom; -import java.util.Arrays; import java.util.Base64; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeException; -import javax.crypto.KeyGenerator; import javax.crypto.NoSuchPaddingException; -import javax.crypto.SecretKey; -import javax.crypto.ShortBufferException; -import javax.crypto.spec.GCMParameterSpec; +import javax.crypto.spec.SecretKeySpec; +import lombok.AccessLevel; +import lombok.NoArgsConstructor; import org.onap.sdc.security.logging.enums.EcompLoggerErrorCode; import org.onap.sdc.security.logging.wrappers.Logger; +@NoArgsConstructor(access = AccessLevel.PRIVATE) public class SecurityUtil { private static final Logger LOG = Logger.getLogger(SecurityUtil.class); - + private static final byte[] KEY = new byte[]{-64, 5, -32, -117, -44, 8, -39, 1, -9, 36, -46, -81, 62, -15, -63, -75}; public static final String ALGORITHM = "AES"; public static final String CHARSET = UTF_8.name(); - public static final int GCM_TAG_LENGTH = 16; - public static final int GCM_IV_LENGTH = 12; - - private static final Key secKey = generateKey(ALGORITHM); + private static final Key secKey = generateKey(KEY, ALGORITHM); - private SecurityUtil() { - } + /** + * cmd commands >$PROGRAM_NAME decrypt "$ENCRYPTED_MSG" >$PROGRAM_NAME encrypt "message" + **/ - public static SecretKey generateKey(String algorithm) { + public static Key generateKey(final byte[] KEY, String algorithm) { try { - KeyGenerator kgen = KeyGenerator.getInstance(algorithm); - kgen.init(128); - return kgen.generateKey(); - } catch (NoSuchAlgorithmException e) { - throw new IllegalStateException(e.toString()); + return new SecretKeySpec(KEY, algorithm); + } catch (Exception e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, "cannot generate key for {}, message : {} .", ALGORITHM, e.getMessage()); + return null; } } - // obfuscates key prefix -> ********** + //obfuscates key prefix -> ********** public static String obfuscateKey(String sensitiveData) { if (sensitiveData == null) { @@ -81,96 +75,70 @@ public class SecurityUtil { return builder.toString(); } - //@formatter:off /** - * @param strDataToEncrypt - plain string to encrypt Encrypt the Data - * a. Declare / Initialize the Data. Here the data is of type String - * b. Convert the Input Text to Bytes - * c. Encrypt the bytes using doFinal method + * @param strDataToEncrypt - plain string to encrypt Encrypt the Data a. Declare / Initialize the Data. Here the data is of type String b. Convert + * the Input Text to Bytes c. Encrypt the bytes using doFinal method */ - //@formatter:on public static Either<String, String> encrypt(String strDataToEncrypt) { - try { - byte[] ciphertext = null; - Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding"); - byte[] initVector = new byte[GCM_IV_LENGTH]; - new SecureRandom().nextBytes(initVector); - GCMParameterSpec spec = - new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, initVector); - cipher.init(Cipher.ENCRYPT_MODE, secKey, spec); - byte[] encoded = strDataToEncrypt.getBytes(java.nio.charset.StandardCharsets.UTF_8); - ciphertext = Arrays.copyOf(initVector, initVector.length + cipher.getOutputSize(encoded.length)); - // Perform encryption - cipher.doFinal(encoded, 0, encoded.length, ciphertext, initVector.length); - String strCipherText = new String(Base64.getMimeEncoder().encode(ciphertext), CHARSET); - return Either.left(strCipherText); - } catch (NoSuchAlgorithmException | UnsupportedEncodingException | InvalidAlgorithmParameterException e) { - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "cannot encrypt data unknown algorithm or missing encoding for {}", - secKey.getAlgorithm()); - } catch (InvalidKeyException e) { - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "invalid key recieved - > {} | {}", - new String(Base64.getDecoder().decode(secKey.getEncoded())), - e.getMessage()); - } catch (IllegalBlockSizeException | BadPaddingException | NoSuchPaddingException e) { - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "bad algorithm definition (Illegal Block Size or padding), please review you algorithm block&padding", - e.getMessage()); - } catch (ShortBufferException e) { - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "the given output buffer is too small to hold the result", - e.getMessage()); + if (strDataToEncrypt != null) { + try { + LOG.debug("Encrypt key -> {}", secKey); + Cipher aesCipherForEncryption = Cipher.getInstance( + "AES"); // Must specify the mode explicitly as most JCE providers default to ECB mode!! + aesCipherForEncryption.init(Cipher.ENCRYPT_MODE, secKey); + byte[] byteDataToEncrypt = strDataToEncrypt.getBytes(); + byte[] byteCipherText = aesCipherForEncryption.doFinal(byteDataToEncrypt); + String strCipherText = new String(Base64.getMimeEncoder().encode(byteCipherText), CHARSET); + LOG.debug("Cipher Text generated using AES is {}", strCipherText); + return Either.left(strCipherText); + } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, + "cannot encrypt data unknown algorithm or missing encoding for {}", secKey.getAlgorithm()); + } catch (InvalidKeyException e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, "invalid key recieved - > {} | {}", + new String(Base64.getDecoder().decode(secKey.getEncoded())), e.getMessage()); + } catch (IllegalBlockSizeException | BadPaddingException | NoSuchPaddingException e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, + "bad algorithm definition (Illegal Block Size or padding), please review you algorithm block&padding", + e.getMessage()); + } } return Either.right("Cannot encrypt " + strDataToEncrypt); } - //@formatter:off /** * Decrypt the Data * * @param byteCipherText - should be valid bae64 input in the length of 16bytes - * @param isBase64Decoded - is data already base64 encoded&aligned to 16 bytes - * a. Initialize a new instance of Cipher for Decryption (normally don't reuse the same object) - * b. Decrypt the cipher bytes using doFinal method + * @param isBase64Decoded - is data already base64 encoded&aligned to 16 bytes a. Initialize a new instance of Cipher for Decryption (normally + * don't reuse the same object) b. Decrypt the cipher bytes using doFinal method */ - //@formatter:on public static Either<String, String> decrypt(byte[] byteCipherText, boolean isBase64Decoded) { - try { - if (isBase64Decoded) { - byteCipherText = Base64.getDecoder().decode(byteCipherText); + if (byteCipherText != null) { + byte[] alignedCipherText = byteCipherText; + try { + if (isBase64Decoded) { + alignedCipherText = Base64.getDecoder().decode(byteCipherText); + } + LOG.debug("Decrypt key -> " + secKey.getEncoded()); + Cipher aesCipherForDecryption = Cipher.getInstance( + "AES"); // Must specify the mode explicitly as most JCE providers default to ECB mode!! + aesCipherForDecryption.init(Cipher.DECRYPT_MODE, secKey); + byte[] byteDecryptedText = aesCipherForDecryption.doFinal(alignedCipherText); + String strDecryptedText = new String(byteDecryptedText); + LOG.debug("Decrypted Text message is: {}", obfuscateKey(strDecryptedText)); + return Either.left(strDecryptedText); + } catch (NoSuchAlgorithmException e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, + "cannot encrypt data unknown algorithm or missing encoding for {}", secKey.getAlgorithm()); + } catch (InvalidKeyException e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, "invalid key recieved - > {} | {}", + new String(Base64.getDecoder().decode(secKey.getEncoded())), e.getMessage()); + } catch (IllegalBlockSizeException | BadPaddingException | NoSuchPaddingException e) { + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, + "bad algorithm definition (Illegal Block Size or padding), please review you algorithm block&padding", + e.getMessage()); } - Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding"); - byte[] initVector = Arrays.copyOfRange(byteCipherText, 0, GCM_IV_LENGTH); - GCMParameterSpec spec = - new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, initVector); - cipher.init(Cipher.DECRYPT_MODE, secKey, spec); - byte[] plaintext = - cipher.doFinal(byteCipherText, GCM_IV_LENGTH, byteCipherText.length - GCM_IV_LENGTH); - String strDecryptedText = new String(plaintext); - return Either.left(strDecryptedText); - } catch (NoSuchAlgorithmException | InvalidAlgorithmParameterException e) { - /* None of these exceptions should be possible if precond is met. */ - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "cannot decrypt data, unknown algorithm or missing encoding for {}", - secKey.getAlgorithm()); - } catch (InvalidKeyException e) { - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "invalid key recieved - > {} | {}", - new String(Base64.getDecoder().decode(secKey.getEncoded())), - e.getMessage()); - } catch (IllegalBlockSizeException | BadPaddingException | NoSuchPaddingException e) { - /* these indicate corrupt or malicious ciphertext */ - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "bad algorithm definition (Illegal Block Size or padding), please review you algorithm block&padding", - e.getMessage()); } return Either.right("Decrypt FAILED"); } @@ -179,10 +147,7 @@ public class SecurityUtil { try { return decrypt(byteCipherText.getBytes(CHARSET), true); } catch (UnsupportedEncodingException e) { - LOG.warn( - EcompLoggerErrorCode.PERMISSION_ERROR, - "Missing encoding for {} | {} ", - secKey.getAlgorithm(), + LOG.warn(EcompLoggerErrorCode.PERMISSION_ERROR, "Missing encoding for {} | {} ", secKey.getAlgorithm(), e.getMessage()); } return Either.right("Decrypt FAILED"); |