starvationevasion.server.model

Interface Encryptable

All Known Implementing Classes:

SecureSocketReadStrategy, SecureSocketWriteStrategy, User

public interface Encryptable

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	HASH_ALGORITHM The following was taken from Shea Polansky with VERY few modifications.
static char[]	hexArray
static int	NONCE_SIZE
static java.lang.String[]	nonceAlphabet I would like to use a asymmetric encryption client generates a pair of public/private keys and sends the public key to the server more info here https://docs.oracle.com/javase/tutorial/security/apisign/step2.html server uses the public key to encrypt some secret key and sends it back to the client (secrete is generated in this class as well as encry.
static java.util.Random	r

Method Summary

Modifier and Type	Method and Description
static java.lang.String	bytesToHex(byte[] bytes) Converts a byte array to a hexadecimal string.
<T> T	decrypt(java.lang.String msg, java.lang.String key)
void	encrypt(java.lang.String msg, java.lang.String key)
static java.lang.String	generateHashedPassword(java.lang.String salt, java.lang.String password) Generates a hashed password based on a given salt and password.
static java.lang.String	generateKey()
static java.lang.String	xorDecrypt(java.lang.String message, java.lang.String key)
static java.lang.String	xorEncrypt(java.lang.String message, java.lang.String key)

Field Detail

nonceAlphabet

static final java.lang.String[] nonceAlphabet

I would like to use a asymmetric encryption client generates a pair of public/private keys and sends the public key to the server more info here https://docs.oracle.com/javase/tutorial/security/apisign/step2.html server uses the public key to encrypt some secret key and sends it back to the client (secrete is generated in this class as well as encry. decrpt) client uses his private key to decrypt the secret client uses algo with the secret key to encrypt the message server uses the secret key to decrypt the message

NONCE_SIZE

static final int NONCE_SIZE

See Also:

Constant Field Values

r

static final java.util.Random r

HASH_ALGORITHM

static final java.lang.String HASH_ALGORITHM

The following was taken from Shea Polansky with VERY few modifications. Thank you for taking the time doing this!

See Also:

Constant Field Values

hexArray

static final char[] hexArray

Method Detail

encrypt

void encrypt(java.lang.String msg,
             java.lang.String key)

decrypt

<T> T decrypt(java.lang.String msg,
              java.lang.String key)

xorEncrypt

static java.lang.String xorEncrypt(java.lang.String message,
                                   java.lang.String key)

xorDecrypt

static java.lang.String xorDecrypt(java.lang.String message,
                                   java.lang.String key)

generateKey

static java.lang.String generateKey()

bytesToHex

static java.lang.String bytesToHex(byte[] bytes)

Converts a byte array to a hexadecimal string. Credit to maybeWeCouldStealAVan on this StackOverflow answer: http://stackoverflow.com/a/9855338

Parameters:

bytes - the byte array to convert

Returns:

the hex string equivalent of bytes

generateHashedPassword

static java.lang.String generateHashedPassword(java.lang.String salt,
                                               java.lang.String password)

Generates a hashed password based on a given salt and password. The algorithm for generation is hash = SHA256(SHA256(salt) + password), where '+' is the concatenation operator, and the salt and password are interpreted as UTF-8 strings of arbitrary length.

Parameters:

salt - the salt to use

password - the password to use

Returns:

the resulting salted/hashed password.