org.openx.market.ssrtb.crypter

Class SsRtbCrypter

java.lang.Object

org.openx.market.ssrtb.crypter.SsRtbCrypter

public class SsRtbCrypter
extends Object

A class that can encrypt and decrypt the price macro used in Server-Side Real-time bidders.

Field Summary

Fields

Modifier and Type	Field and Description
private static int	CIPHERTEXT_SIZE
private static String	HMAC_SHA1
private static int	INTEGRITY_SIZE
private static int	IV_SIZE
private Random	rand
private static Charset	US_ASCII

Constructor Summary

Constructors

Constructor and Description
SsRtbCrypter()

Method Summary

Modifier and Type	Method and Description
SecretKey	b64StrToKey(String b64Str)
long	decodeDecrypt(String base64Websafe, SecretKey encryptKey, SecretKey integrityKey)
long	decodeDecrypt(String base64Websafe, String b64EncryptKey, String b64IntegrityKey)
byte[]	decrypt(byte[] crypted, SecretKey encryptionKey, SecretKey integrityKey)
byte[]	decrypt(byte[] ciphered, String b64EncryptKey, String b64IntegrityKey)
byte[]	encrypt(byte[] unciphered, SecretKey encryptionKey, SecretKey integrityKey)
byte[]	encrypt(byte[] unciphered, String b64EncryptKey, String b64IntegrityKey)
String	encryptEncode(long value, SecretKey encryptKey, SecretKey integrityKey)
String	encryptEncode(long value, String b64EncryptKey, String b64IntegrityKey)
SecretKey	hexStrToKey(String hexKey)
protected byte[]	toBytes(long val) Converts a long to an 8 byte array.
protected long	toLong(byte[] buff) Converts an array of 8 bytes into a long.

Methods inherited from class java.lang.Object

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

Field Detail

US_ASCII

private static final Charset US_ASCII

HMAC_SHA1

private static final String HMAC_SHA1

See Also:

Constant Field Values

IV_SIZE

private static final int IV_SIZE

See Also:

Constant Field Values

CIPHERTEXT_SIZE

private static final int CIPHERTEXT_SIZE

See Also:

Constant Field Values

INTEGRITY_SIZE

private static final int INTEGRITY_SIZE

See Also:

Constant Field Values

rand

private final Random rand

Constructor Detail

SsRtbCrypter

public SsRtbCrypter()

Method Detail

b64StrToKey

public SecretKey b64StrToKey(String b64Str)

hexStrToKey

public SecretKey hexStrToKey(String hexKey)
                      throws org.apache.commons.codec.DecoderException

Throws:

org.apache.commons.codec.DecoderException

encryptEncode

public String encryptEncode(long value,
                            String b64EncryptKey,
                            String b64IntegrityKey)

decodeDecrypt

public long decodeDecrypt(String base64Websafe,
                          String b64EncryptKey,
                          String b64IntegrityKey)
                   throws SsRtbDecryptingException

Throws:

SsRtbDecryptingException

encryptEncode

public String encryptEncode(long value,
                            SecretKey encryptKey,
                            SecretKey integrityKey)

decodeDecrypt

public long decodeDecrypt(String base64Websafe,
                          SecretKey encryptKey,
                          SecretKey integrityKey)
                   throws SsRtbDecryptingException

Throws:

SsRtbDecryptingException

encrypt

public byte[] encrypt(byte[] unciphered,
                      String b64EncryptKey,
                      String b64IntegrityKey)

decrypt

public byte[] decrypt(byte[] ciphered,
                      String b64EncryptKey,
                      String b64IntegrityKey)
               throws SsRtbDecryptingException

Throws:

SsRtbDecryptingException

encrypt

public byte[] encrypt(byte[] unciphered,
                      SecretKey encryptionKey,
                      SecretKey integrityKey)

decrypt

public byte[] decrypt(byte[] crypted,
                      SecretKey encryptionKey,
                      SecretKey integrityKey)
               throws SsRtbDecryptingException

Throws:

SsRtbDecryptingException

toBytes

protected byte[] toBytes(long val)

Converts a long to an 8 byte array. Code is derived from that used in DataOutputStream.writeLong(long).

Parameters:

val -

Returns:

byte array of length 8

toLong

protected long toLong(byte[] buff)

Converts an array of 8 bytes into a long. Code is dervied from that used in DataInputStream.readLong().

Parameters:

buff -

Returns:

value of the 8 byte array as a long