Method Detail

• calculate

  void calculate(byte[] sharedKey,
                 int offset,
                 DHState publicDH)

  Performs a Diffie-Hellman calculation with this object as the private key.

  Parameters:

  sharedKey - Buffer to put the shared key into.

  offset - Offset of the first byte for the shared key.

  publicDH - Object that contains the public key for the calculation.

  Throws:

  IllegalArgumentException - The publicDH object is not the same type as this object, or one of the objects does not contain a valid key.

• clearKey

  void clearKey()

  Clears the key pair.

• clone

  DHState clone()
         throws CloneNotSupportedException

  I2P

  Throws:

  CloneNotSupportedException

• copyFrom

  void copyFrom(DHState other)

  Copies the key values from another DH object of the same type.

  Parameters:

  other - The other DH object to copy from

  Throws:

  IllegalStateException - The other DH object does not have the same type as this object.

• generateKeyPair

  void generateKeyPair()

  Generates a new random keypair.

• getDHName

  String getDHName()

  Gets the Noise protocol name for this Diffie-Hellman algorithm.

  Returns:

  The algorithm name.

• getEncodedPublicKey

  void getEncodedPublicKey(byte[] key,
                           int offset)

  Gets the public key associated with this object.

  Parameters:

  key - The buffer to copy the public key to.

  offset - The first offset in the key buffer to copy to.

• getPrivateKey

  void getPrivateKey(byte[] key,
                     int offset)

  Gets the private key associated with this object.

  Parameters:

  key - The buffer to copy the private key to.

  offset - The first offset in the key buffer to copy to.

• getPrivateKeyLength

  int getPrivateKeyLength()

  Gets the length of private keys for this algorithm.

  Returns:

  The length of private keys in bytes.

• getPublicKey

  void getPublicKey(byte[] key,
                    int offset)

  Gets the public key associated with this object.

  Parameters:

  key - The buffer to copy the public key to.

  offset - The first offset in the key buffer to copy to.

• getPublicKeyLength

  int getPublicKeyLength()

  Gets the length of public keys for this algorithm.

  Returns:

  The length of public keys in bytes.

• getSharedKeyLength

  int getSharedKeyLength()

  Gets the length of shared keys for this algorithm.

  Returns:

  The length of shared keys in bytes.

• hasEncodedPublicKey

  boolean hasEncodedPublicKey()

  Determine if this object contains an optional encoded public key.

  Returns:

  Returns true if this object contains an encoded public key, or false if the public key has not yet been set.

• hasPrivateKey

  boolean hasPrivateKey()

  Determine if this object contains a private key.

  Returns:

  Returns true if this object contains a private key, or false if the private key has not yet been set.

• hasPublicKey

  boolean hasPublicKey()

  Determine if this object contains a public key.

  Returns:

  Returns true if this object contains a public key, or false if the public key has not yet been set.

• isNullPublicKey

  boolean isNullPublicKey()

  Determine if the public key in this object is the special null value.

  Returns:

  Returns true if the public key is the special null value, or false otherwise.

• setKeys

  void setKeys(byte[] privkey,
               int privoffset,
               byte[] pubkey,
               int puboffset)

  Sets the private and public keys for this object. I2P for efficiency, since setPrivateKey() calculates the public key and overwrites it. Does NOT check that the two keys match.

  Parameters:

  privkey - The buffer containing the private key.

  privoffset - The first offset in the buffer that contains the key.

  pubkey - The buffer containing the private key.

  puboffset - The first offset in the buffer that contains the key.

• setPublicKey

  void setPublicKey(byte[] key,
                    int offset)

  Sets the public key for this object.

  Parameters:

  key - The buffer containing the public key.

  offset - The first offset in the buffer that contains the key. If this object previously held a key pair, then this function will change it into a public key only object.

• setToNullPublicKey

  void setToNullPublicKey()

  Sets this object to the null public key and clears the private key.