Package alpine.security.crypto

Class DataEncryption

java.lang.Object
alpine.security.crypto.DataEncryption
public class DataEncryption extends Object
This class performs symmetric encryption of data using the system-defined secret key. The encryption routines in this class require the use of the unlimited strength policy files, included in the most recent versions of Java by default. Older Java versions may need to install the policy files for the methods in this class to function correctly.
Since:
1.3.0
Author:
Steve Springett

  • Method Details

    • encryptAsBytes

      public static byte[] encryptAsBytes(SecretKey secretKey, String plainText) throws Exception
      Encrypts the specified plainText using AES-256.
      Parameters:
      plainText - the text to encrypt
      secretKey - the secret key to use to encrypt with
      Returns:
      the encrypted bytes
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • encryptAsBytes

      public static byte[] encryptAsBytes(String plainText) throws Exception
      Encrypts the specified plainText using AES-256. This method uses the default secret key.
      Parameters:
      plainText - the text to encrypt
      Returns:
      the encrypted bytes
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • encryptAsString

      public static String encryptAsString(SecretKey secretKey, String plainText) throws Exception
      Encrypts the specified plainText using AES-256 and returns a Base64 encoded representation of the encrypted bytes.
      Parameters:
      secretKey - the secret key to use to encrypt with
      plainText - the text to encrypt
      Returns:
      a Base64 encoded representation of the encrypted bytes
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • encryptAsString

      public static String encryptAsString(String plainText) throws Exception
      Encrypts the specified plainText using AES-256 and returns a Base64 encoded representation of the encrypted bytes. This method uses the default secret key.
      Parameters:
      plainText - the text to encrypt
      Returns:
      a Base64 encoded representation of the encrypted bytes
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • decryptAsBytes

      public static byte[] decryptAsBytes(SecretKey secretKey, byte[] encryptedIvTextBytes) throws Exception
      Decrypts the specified bytes using AES-256.
      Parameters:
      secretKey - the secret key to decrypt with
      encryptedIvTextBytes - the text to decrypt
      Returns:
      the decrypted bytes
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • decryptAsBytes

      public static byte[] decryptAsBytes(byte[] encryptedIvTextBytes) throws Exception
      Decrypts the specified bytes using AES-256. This method uses the default secret key.
      Parameters:
      encryptedIvTextBytes - the text to decrypt
      Returns:
      the decrypted bytes
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • decryptAsString

      public static String decryptAsString(SecretKey secretKey, String encryptedText) throws Exception
      Decrypts the specified string using AES-256. The encryptedText is expected to be the Base64 encoded representation of the encrypted bytes generated from encryptAsString(String).
      Parameters:
      secretKey - the secret key to decrypt with
      encryptedText - the text to decrypt
      Returns:
      the decrypted string
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0

    • decryptAsString

      public static String decryptAsString(String encryptedText) throws Exception
      Decrypts the specified string using AES-256. The encryptedText is expected to be the Base64 encoded representation of the encrypted bytes generated from encryptAsString(String). This method uses the default secret key.
      Parameters:
      encryptedText - the text to decrypt
      Returns:
      the decrypted string
      Throws:
      Exception - a number of exceptions may be thrown
      Since:
      1.3.0