Package io.anyline.nfc.bouncycastle.crypto.engines

Class GOST28147Engine

  • All Implemented Interfaces:
    io.anyline.nfc.bouncycastle.crypto.BlockCipher 
    
public class GOST28147Engine
 implements BlockCipher

    implementation of GOST 28147-89

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      GOST28147Engine() standard constructor.

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      void init(boolean forEncryption, CipherParameters params) initialise an GOST28147 cipher.
      String getAlgorithmName() Return the name of the algorithm the cipher implements.
      int getBlockSize() Return the block size for this cipher (in bytes).
      int processBlock(Array<byte> in, int inOff, Array<byte> out, int outOff) Process one block of input from the array in and write it to the out array.
      void reset() Reset the cipher.
      static Array<byte> getSBox(String sBoxName) Return the S-Box associated with SBoxName
      static String getSBoxName(Array<byte> sBox)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • GOST28147Engine

        GOST28147Engine()
        standard constructor.

    • Method Detail

      • init

         void init(boolean forEncryption, CipherParameters params)

        initialise an GOST28147 cipher.

        Parameters:
        forEncryption - whether or not we are for encryption.
        params - the parameters required to set up the cipher.

      • getAlgorithmName

         String getAlgorithmName()

        Return the name of the algorithm the cipher implements.

        Returns:

        the name of the algorithm the cipher implements.

      • getBlockSize

         int getBlockSize()

        Return the block size for this cipher (in bytes).

        Returns:

        the block size for this cipher in bytes.

      • processBlock

         int processBlock(Array<byte> in, int inOff, Array<byte> out, int outOff)

        Process one block of input from the array in and write it to the out array.

        Parameters:
        in - the array containing the input data.
        inOff - offset into the in array the data starts at.
        out - the array the output data will be copied into.
        outOff - the offset into the out array the output will start at.
        Returns:

        the number of bytes processed and produced.

      • reset

         void reset()

        Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).

      • getSBox

         static Array<byte> getSBox(String sBoxName)

        Return the S-Box associated with SBoxName

        Parameters:
        sBoxName - name of the S-Box
        Returns:

        byte array representing the S-Box