Package com.mku.salmon.text

Class SalmonTextDecryptor

java.lang.Object

com.mku.salmon.text.SalmonTextDecryptor

public class SalmonTextDecryptor
extends Object

Utility class that encrypts and decrypts text strings.

Constructor Summary

Constructors

Constructor	Description
SalmonTextDecryptor()

Method Summary

Modifier and Type	Method	Description
static String	decryptString(String text, byte[] key, byte[] nonce, boolean header)	Decrypts a text String using AES256 with the key and nonce provided.
static String	decryptString(String text, byte[] key, byte[] nonce, boolean header, boolean integrity, byte[] hashKey, Integer chunkSize)	Decrypts a text String using AES256 with the key and nonce provided.

Methods inherited from class java.lang.Object

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

Constructor Details

SalmonTextDecryptor

public SalmonTextDecryptor()

Method Details

decryptString

public static String decryptString(String text,
 byte[] key,
 byte[] nonce,
 boolean header)
                            throws IOException

Decrypts a text String using AES256 with the key and nonce provided.

Parameters:

text - Text to be decrypted.

key - The encryption key to be used.

nonce - The nonce to be used, set only if header=false.

header - Set to true if you encrypted the string with encrypt(header=true), set only if nonce=null otherwise you will have to provide the original nonce.

Returns:

The decrypted text.

Throws:

IOException - Thrown if there is an IO error.

SalmonSecurityException - Thrown if there is a security exception

IntegrityException - Thrown if the data are corrupt or tampered with.

decryptString

public static String decryptString(String text,
 byte[] key,
 byte[] nonce,
 boolean header,
 boolean integrity,
 byte[] hashKey,
 Integer chunkSize)
                            throws IOException

Decrypts a text String using AES256 with the key and nonce provided.

Parameters:

text - Text to be decrypted.

key - The encryption key to be used.

nonce - The nonce to be used, set only if header=false.

header - Set to true if you encrypted the string with encrypt(header=true), set only if nonce=null otherwise you will have to provide the original nonce.

integrity - True if you want to calculate and store hash signatures for each chunkSize

hashKey - Hash key to be used for all chunks.

chunkSize - The chunk size.

Returns:

The decrypted text.

Throws:

IOException - Thrown if there is an IO error.

SalmonSecurityException - Thrown if there is a security exception

IntegrityException - Thrown if the data are corrupt or tampered with.