io.nessus.cipher.utils

Class AESUtils

java.lang.Object

io.nessus.cipher.utils.AESUtils

public class AESUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_STRENGTH

Constructor Summary

Constructors

Constructor and Description
AESUtils()

Method Summary

Modifier and Type	Method and Description
static javax.crypto.SecretKey	decodeSecretKey(byte[] rawKey)
static javax.crypto.SecretKey	decodeSecretKey(java.lang.String encKey)
static java.lang.String	encodeKey(java.security.Key key)
static byte[]	getIV(io.nessus.Wallet.Address addr, io.ipfs.multihash.Multihash cid) Create an AES initialization vector derived from the owner's private key and a content id.
static javax.crypto.SecretKey	newSecretKey() Generate the secret key from a random source.
static javax.crypto.SecretKey	newSecretKey(io.nessus.Wallet.Address addr) Create an AES secret key derived from the owner's private key.
static javax.crypto.SecretKey	newSecretKey(io.nessus.Wallet.Address addr, io.ipfs.multihash.Multihash cid) Create an AES secret key derived from the owner's private key and some content id.
static javax.crypto.SecretKey	newSecretKey(io.nessus.Wallet.Address addr, io.ipfs.multihash.Multihash cid, int strength)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_STRENGTH

public static final int DEFAULT_STRENGTH

See Also:

Constant Field Values

Constructor Detail

AESUtils

public AESUtils()

Method Detail

newSecretKey

public static javax.crypto.SecretKey newSecretKey()
                                           throws java.security.GeneralSecurityException

Generate the secret key from a random source.

Throws:

java.security.GeneralSecurityException

newSecretKey

public static javax.crypto.SecretKey newSecretKey(io.nessus.Wallet.Address addr)
                                           throws java.security.GeneralSecurityException

Create an AES secret key derived from the owner's private key.

Throws:

java.security.GeneralSecurityException

newSecretKey

public static javax.crypto.SecretKey newSecretKey(io.nessus.Wallet.Address addr,
                                                  io.ipfs.multihash.Multihash cid)
                                           throws java.security.GeneralSecurityException

Create an AES secret key derived from the owner's private key and some content id.

Throws:

java.security.GeneralSecurityException

newSecretKey

public static javax.crypto.SecretKey newSecretKey(io.nessus.Wallet.Address addr,
                                                  io.ipfs.multihash.Multihash cid,
                                                  int strength)
                                           throws java.security.GeneralSecurityException

Throws:

java.security.GeneralSecurityException

encodeKey

public static java.lang.String encodeKey(java.security.Key key)

decodeSecretKey

public static javax.crypto.SecretKey decodeSecretKey(java.lang.String encKey)

decodeSecretKey

public static javax.crypto.SecretKey decodeSecretKey(byte[] rawKey)

getIV

public static byte[] getIV(io.nessus.Wallet.Address addr,
                           io.ipfs.multihash.Multihash cid)
                    throws java.security.GeneralSecurityException

Create an AES initialization vector derived from the owner's private key and a content id. The idea is that the same owner can encrypt the same content repeatetly and still get identical encrypted content.

Throws:

java.security.GeneralSecurityException