dev.o1c.jcryptobox

Class JCryptoBox.Seal

java.lang.Object

dev.o1c.jcryptobox.JCryptoBox.Seal

Enclosing class:

JCryptoBox

public static class JCryptoBox.Seal
extends Object

Sealed boxes provide the ability for an anonymous sender to encrypt a message to a known recipient given their public key. Sealed boxes differ from a normal box in that only the integrity of the message can be verified by the recipient while normal boxes also verify sender identity. Messages are encrypted using ephemeral public keys whose corresponding private keys are discarded. Without the private key used for a given message, the sender cannot decrypt their own message later.

See Also:

JCryptoBox.sealing(PublicKey), JCryptoBox.Unseal

Method Summary

Modifier and Type	Method and Description
byte[]	seal(byte[] message) Encrypts the given message bytes and returns the sealed box data.
byte[]	seal(byte[] message, int offset, int length) Encrypts the given slice of input data and returns the sealed box data.
void	seal(byte[] input, int inOffset, int inLength, byte[] output, int outOffset) Encrypts the given slice of input data into a sealed box in the provided output array at the given offset.

Methods inherited from class java.lang.Object

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

Method Detail

seal

public void seal(byte[] input,
                 int inOffset,
                 int inLength,
                 byte[] output,
                 int outOffset)

Encrypts the given slice of input data into a sealed box in the provided output array at the given offset.

Parameters:

input - array of bytes to read data to encrypt

inOffset - where in the input array to begin reading data

inLength - how many bytes to read and encrypt

output - array of bytes to write encrypted data to

outOffset - where in the output array to begin writing data

Throws:

IllegalArgumentException - if the output buffer is too small

ArrayIndexOutOfBoundsException - if the offsets or length are out of bounds of the given arrays

NullPointerException - if the input or output arrays are null

seal

public byte[] seal(byte[] message,
                   int offset,
                   int length)

Encrypts the given slice of input data and returns the sealed box data.

Parameters:

message - array of bytes to read data to encrypt

offset - where in the message array to begin reading data to encrypt

length - how many bytes to read and encrypt

Returns:

the sealed box data

Throws:

NullPointerException - if the given array is null

seal

public byte[] seal(byte[] message)

Encrypts the given message bytes and returns the sealed box data.

Parameters:

message - array of bytes to read and encrypt

Returns:

the sealed box data

Throws:

NullPointerException - if the given array is null