SealedBoxUtility (io.github.venafi:vcert-java 0.8.4 API)

java.lang.Object
- com.venafi.vcert.sdk.connectors.cloud.SealedBoxUtility

```
public class SealedBoxUtility
extends Object
```
The following utility is based on the SealBoxUtility code shared in the stackoverflow question How can I create or open a libsodium compatible sealed box in pure Java.
The main difference is on this version is being used the org.bouncycastle.crypto.digests.Blake2bDigest from The Bouncy Castle Crypto Package For Java instead of Blake2b to get the Blake2b hash.
Has also a dependency on TweetNaclFast from https://github.com/InstantWebP2P/tweetnacl-java.

Field Summary

Fields
Modifier and Type Field Description

static int CRYPTO_BOX_NONCEBYTES

Constructor Summary

Constructors
Constructor Description

SealedBoxUtility()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`cryptoBoxSeal(byte[] receiverPubKey, byte[] clearText)`	Encrypt in a sealed box
`static byte[]`	`cryptoBoxSealNonce(byte[] senderpk, byte[] mypk)`	hash the combination of senderpk + mypk into nonce using blake2b hash

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CRYPTO_BOX_NONCEBYTES
```
public static final int CRYPTO_BOX_NONCEBYTES
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SealedBoxUtility
```
public SealedBoxUtility()
```
- Method Detail
  - cryptoBoxSeal
```
public static byte[] cryptoBoxSeal(byte[] receiverPubKey,
                                   byte[] clearText)
                            throws GeneralSecurityException
```
    Encrypt in a sealed box
    
    Parameters:
    
    receiverPubKey - receiver public key
    
    clearText - clear text
    
    Returns:
    
    encrypted message
    
    Throws:
    
    GeneralSecurityException
  - cryptoBoxSealNonce
```
public static byte[] cryptoBoxSealNonce(byte[] senderpk,
                                        byte[] mypk)
```
    hash the combination of senderpk + mypk into nonce using blake2b hash
    
    Parameters:
    
    senderpk - the senders public key
    
    mypk - my own public key
    
    Returns:
    
    the nonce computed using Blake2b generic hash