Class TlsNullCipher

java.lang.Object
org.bouncycastle.tls.crypto.impl.TlsNullCipher
All Implemented Interfaces:
TlsCipher

public class TlsNullCipher extends Object implements TlsCipher
The NULL cipher.
  • Field Details

  • Constructor Details

  • Method Details

    • getCiphertextDecodeLimit

      public int getCiphertextDecodeLimit(int plaintextLimit)
      Description copied from interface: TlsCipher
      Return the maximum input size for a ciphertext given a maximum output size for the plaintext of plaintextLimit bytes.
      Specified by:
      getCiphertextDecodeLimit in interface TlsCipher
      Parameters:
      plaintextLimit - the maximum output size for the plaintext.
      Returns:
      the maximum input size of the ciphertext for plaintextlimit bytes of output.
    • getCiphertextEncodeLimit

      public int getCiphertextEncodeLimit(int plaintextLength, int plaintextLimit)
      Description copied from interface: TlsCipher
      Return the maximum output size for a ciphertext given an actual input plaintext size of plaintextLength bytes and a maximum input plaintext size of plaintextLimit bytes.
      Specified by:
      getCiphertextEncodeLimit in interface TlsCipher
      Parameters:
      plaintextLength - the actual input size for the plaintext.
      plaintextLimit - the maximum input size for the plaintext.
      Returns:
      the maximum output size of the ciphertext for plaintextlimit bytes of input.
    • getPlaintextLimit

      public int getPlaintextLimit(int ciphertextLimit)
      Description copied from interface: TlsCipher
      Return the maximum size for the plaintext given ciphertextlimit bytes of ciphertext.
      Specified by:
      getPlaintextLimit in interface TlsCipher
      Parameters:
      ciphertextLimit - the maximum number of bytes of ciphertext.
      Returns:
      the maximum size of the plaintext for ciphertextlimit bytes of input.
    • encodePlaintext

      public TlsEncodeResult encodePlaintext(long seqNo, short contentType, ProtocolVersion recordVersion, int headerAllocation, byte[] plaintext, int offset, int len) throws IOException
      Description copied from interface: TlsCipher
      Encode the passed in plaintext using the current bulk cipher.
      Specified by:
      encodePlaintext in interface TlsCipher
      Parameters:
      seqNo - sequence number of the message represented by plaintext.
      contentType - content type of the message represented by plaintext.
      recordVersion - ProtocolVersion used for the record.
      headerAllocation - extra bytes to allocate at start of returned byte array.
      plaintext - array holding input plaintext to the cipher.
      offset - offset into input array the plaintext starts at.
      len - length of the plaintext in the array.
      Returns:
      A TlsEncodeResult containing the result of encoding (after 'headerAllocation' unused bytes).
      Throws:
      IOException
    • decodeCiphertext

      public TlsDecodeResult decodeCiphertext(long seqNo, short recordType, ProtocolVersion recordVersion, byte[] ciphertext, int offset, int len) throws IOException
      Description copied from interface: TlsCipher
      Decode the passed in ciphertext using the current bulk cipher.
      Specified by:
      decodeCiphertext in interface TlsCipher
      Parameters:
      seqNo - sequence number of the message represented by ciphertext.
      recordType - content type used in the record for this message.
      recordVersion - ProtocolVersion used for the record.
      ciphertext - array holding input ciphertext to the cipher.
      offset - offset into input array the ciphertext starts at.
      len - length of the ciphertext in the array.
      Returns:
      A TlsDecodeResult containing the result of decoding.
      Throws:
      IOException
    • rekeyDecoder

      public void rekeyDecoder() throws IOException
      Specified by:
      rekeyDecoder in interface TlsCipher
      Throws:
      IOException
    • rekeyEncoder

      public void rekeyEncoder() throws IOException
      Specified by:
      rekeyEncoder in interface TlsCipher
      Throws:
      IOException
    • usesOpaqueRecordType

      public boolean usesOpaqueRecordType()
      Specified by:
      usesOpaqueRecordType in interface TlsCipher