Package org.h2.security

Interface BlockCipher

All Known Implementing Classes:
AES, Fog, XTEA
public interface BlockCipher
A block cipher is a data encryption algorithm that operates on blocks.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    ALIGN
    Blocks sizes are always multiples of this number.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    decrypt(byte[] bytes, int off, int len)
    Decrypt a number of bytes.
    void
    encrypt(byte[] bytes, int off, int len)
    Encrypt a number of bytes.
    int
    getKeyLength()
    Get the length of the key in bytes.
    void
    setKey(byte[] key)
    Set the encryption key used for encrypting and decrypting.

  • Field Details

    • ALIGN

      static final int ALIGN
      Blocks sizes are always multiples of this number.
      See Also:

  • Method Details

    • setKey

      void setKey(byte[] key)
      Set the encryption key used for encrypting and decrypting. The key needs to be 16 bytes long.
      Parameters:
      key - the key

    • encrypt

      void encrypt(byte[] bytes, int off, int len)
      Encrypt a number of bytes. This is done in-place, that means the bytes are overwritten.
      Parameters:
      bytes - the byte array
      off - the start index
      len - the number of bytes to encrypt

    • decrypt

      void decrypt(byte[] bytes, int off, int len)
      Decrypt a number of bytes. This is done in-place, that means the bytes are overwritten.
      Parameters:
      bytes - the byte array
      off - the start index
      len - the number of bytes to decrypt

    • getKeyLength

      int getKeyLength()
      Get the length of the key in bytes.
      Returns:
      the length of the key