Field Detail

• CURVE

  public static final java.lang.String CURVE

  See Also:

  Constant Field Values

• ALGORITHM

  public static final java.lang.String ALGORITHM

  See Also:

  Constant Field Values

Constructor Detail

• Utils

  public Utils()

Method Detail

• encode

  public static byte[] encode​(org.bouncycastle.jce.interfaces.ECPublicKey publicKey)

  Get the uncompressed encoding of the public key point. The resulting array should be 65 bytes length and start with 0x04 followed by the x and y coordinates (32 bytes each).

  Parameters:

  publicKey -

  Returns:

• encode

  public static byte[] encode​(org.bouncycastle.jce.interfaces.ECPrivateKey privateKey)

• loadPublicKey

  public static java.security.PublicKey loadPublicKey​(java.lang.String encodedPublicKey)
                                               throws java.security.NoSuchProviderException,
                                                      java.security.NoSuchAlgorithmException,
                                                      java.security.spec.InvalidKeySpecException

  Load the public key from a URL-safe base64 encoded string. Takes into account the different encodings, including point compression.

  Parameters:

  encodedPublicKey -

  Throws:

  java.security.NoSuchProviderException

  java.security.NoSuchAlgorithmException

  java.security.spec.InvalidKeySpecException

• loadPublicKey

  public static java.security.PublicKey loadPublicKey​(byte[] decodedPublicKey)
                                               throws java.security.NoSuchProviderException,
                                                      java.security.NoSuchAlgorithmException,
                                                      java.security.spec.InvalidKeySpecException

  Load the public key from a byte array.

  Parameters:

  decodedPublicKey -

  Throws:

  java.security.NoSuchProviderException

  java.security.NoSuchAlgorithmException

  java.security.spec.InvalidKeySpecException

• loadPrivateKey

  public static java.security.PrivateKey loadPrivateKey​(java.lang.String encodedPrivateKey)
                                                 throws java.security.NoSuchProviderException,
                                                        java.security.NoSuchAlgorithmException,
                                                        java.security.spec.InvalidKeySpecException

  Load the private key from a URL-safe base64 encoded string

  Parameters:

  encodedPrivateKey -

  Returns:

  Throws:

  java.security.NoSuchProviderException

  java.security.NoSuchAlgorithmException

  java.security.spec.InvalidKeySpecException

• loadPrivateKey

  public static java.security.PrivateKey loadPrivateKey​(byte[] decodedPrivateKey)
                                                 throws java.security.NoSuchProviderException,
                                                        java.security.NoSuchAlgorithmException,
                                                        java.security.spec.InvalidKeySpecException

  Load the private key from a byte array

  Parameters:

  decodedPrivateKey -

  Returns:

  Throws:

  java.security.NoSuchProviderException

  java.security.NoSuchAlgorithmException

  java.security.spec.InvalidKeySpecException

• loadPublicKey

  public static org.bouncycastle.jce.interfaces.ECPublicKey loadPublicKey​(org.bouncycastle.jce.interfaces.ECPrivateKey privateKey)
                                                                   throws java.security.NoSuchProviderException,
                                                                          java.security.NoSuchAlgorithmException,
                                                                          java.security.spec.InvalidKeySpecException

  Load a public key from the private key.

  Parameters:

  privateKey -

  Returns:

  Throws:

  java.security.NoSuchProviderException

  java.security.NoSuchAlgorithmException

  java.security.spec.InvalidKeySpecException

• verifyKeyPair

  public static boolean verifyKeyPair​(java.security.PrivateKey privateKey,
                                      java.security.PublicKey publicKey)

  Verify that the private key belongs to the public key.

  Parameters:

  privateKey -

  publicKey -

  Returns:

• concat

  public static byte[] concat​(byte[]... arrays)

  Utility to concat byte arrays

• combinedLength

  public static int combinedLength​(byte[]... arrays)

  Compute combined array length

• toByteArray

  public static byte[] toByteArray​(int integer,
                                   int size)

  Create a byte array of the given length from the given integer.

  Parameters:

  integer -

  size -

  Returns: