org.polyglotted.crypto.asymmetric
Class RsaDecrypter

java.lang.Object
  org.polyglotted.crypto.api.AbstractCrypto
      org.polyglotted.crypto.asymmetric.RsaDecrypter

All Implemented Interfaces:

Crypto

public class RsaDecrypter
extends AbstractCrypto

RsaDecrypter uses RSA algorithm of Asymmetric key cryptography to convert unreadable cipher text into plain text.

Author:

Shankar Vasudevan

Nested Class Summary

Nested classes/interfaces inherited from class org.polyglotted.crypto.api.AbstractCrypto

AbstractCrypto.Mode

Field Summary

Fields inherited from class org.polyglotted.crypto.api.AbstractCrypto

cipher

Fields inherited from interface org.polyglotted.crypto.api.Crypto

AES_ALGORITHM, RSA_ALGORITHM

Constructor Summary

RsaDecrypter(PrivateKey key)
Create a new RsaDecrypter

Method Summary

String	crypt(String text) Perform encrypt or decrypt action
static String	decrypt(InputStream privKeyIs, String cipherText) Decrypt the given text with a private key
static void	decryptFile(InputStream privKeyIs, InputStream input, OutputStream output) Decrypt the incoming file and copy the resulting data into the output stream.
static void	decryptPropertyFile(InputStream privKeyIs, InputStream propertyIs, OutputStream output, String prefix) Decrypt the incoming property file and copy the resulting data into the output stream.
AbstractCrypto.Mode	getMode()

Methods inherited from class org.polyglotted.crypto.api.AbstractCrypto

crypt, encrypt, getAlgorithm, getCipher, getHeaderLine, handlePropertyFirstLine

Methods inherited from class java.lang.Object

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

Constructor Detail

RsaDecrypter

public RsaDecrypter(PrivateKey key)

Create a new RsaDecrypter

Parameters:

key - the PrivateKey for the decryption

Method Detail

getMode

public AbstractCrypto.Mode getMode()

Specified by:

getMode in class AbstractCrypto

Returns:

if this crypto performs an encrypt or decrypt operation

crypt

public String crypt(String text)

Description copied from interface: Crypto

Perform encrypt or decrypt action

Parameters:

text - the String to crypt

Returns:

the result String

decrypt

public static String decrypt(InputStream privKeyIs,
                             String cipherText)

Decrypt the given text with a private key

Parameters:

privKeyIs - the private key input stream

input - the cipher data to be decryted

Returns:

the String containing plain text

decryptFile

public static void decryptFile(InputStream privKeyIs,
                               InputStream input,
                               OutputStream output)

Decrypt the incoming file and copy the resulting data into the output stream.

Parameters:

privKeyIs - the private key input stream

input - the file input stream

output - the output stream to write the decrypted values

decryptPropertyFile

public static void decryptPropertyFile(InputStream privKeyIs,
                                       InputStream propertyIs,
                                       OutputStream output,
                                       String prefix)

Decrypt the incoming property file and copy the resulting data into the output stream.

Parameters:

privKeyIs - the private key input stream

propertyIs - the property file input stream

output - the output stream to write the decrypted values

prefix - the String prefix for lines which have to be decryted