ch.rgw.crypt
Class SAT

java.lang.Object
  ch.rgw.crypt.SAT

public class SAT
extends java.lang.Object

Secure Authenticated Transmission The Transmitter stores a hashtable in an encrypted and signed wrapper.

Author:

Gerry

Field Summary

static java.lang.String	ADM_PAYLOAD
static java.lang.String	ADM_SIGNATURE
static java.lang.String	ADM_SIGNED_BY
static java.lang.String	ADM_TIMESTAMP
static java.lang.String	ERR_DECRYPT
static java.lang.String	ERR_SERVER
static java.lang.String	KEY_ERROR A key to store error conditions
static java.lang.String	KEY_RESULT A key to store the return value of a call
static java.lang.String	RESULT_BAD_SIGNATURE
static java.lang.String	USER_UNKNOWN

Constructor Summary

SAT(Cryptologist c)
Create a new SAT actor

SAT(java.lang.String creator, java.lang.String provider, Cryptologist c)

Method Summary

byte[]	sendRequest(java.lang.String hostaddress, byte[] request)
java.lang.String	sendRequest(java.lang.String hostaddress, java.lang.String request) Deprecated.
java.util.Map<java.lang.String,java.io.Serializable>	unwrap(byte[] encrypted, boolean bCheckSignature) Decrypt, and verify a packet (using our preconfigured Cryptologist)
byte[]	wrap(java.util.Map<java.lang.String,java.io.Serializable> var, java.lang.String dest) Sign and encrypt a HashMap.

Methods inherited from class java.lang.Object

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

Field Detail

KEY_RESULT

public static final java.lang.String KEY_RESULT

A key to store the return value of a call

See Also:

Constant Field Values

KEY_ERROR

public static final java.lang.String KEY_ERROR

A key to store error conditions

See Also:

Constant Field Values

USER_UNKNOWN

public static final java.lang.String USER_UNKNOWN

See Also:

Constant Field Values

RESULT_BAD_SIGNATURE

public static final java.lang.String RESULT_BAD_SIGNATURE

See Also:

Constant Field Values

ADM_TIMESTAMP

public static final java.lang.String ADM_TIMESTAMP

See Also:

Constant Field Values

ADM_SIGNED_BY

public static final java.lang.String ADM_SIGNED_BY

See Also:

Constant Field Values

ADM_PAYLOAD

public static final java.lang.String ADM_PAYLOAD

See Also:

Constant Field Values

ADM_SIGNATURE

public static final java.lang.String ADM_SIGNATURE

See Also:

Constant Field Values

ERR_SERVER

public static final java.lang.String ERR_SERVER

See Also:

Constant Field Values

ERR_DECRYPT

public static final java.lang.String ERR_DECRYPT

See Also:

Constant Field Values

Constructor Detail

SAT

public SAT(Cryptologist c)

Create a new SAT actor

Parameters:

c - a fully configured Cryptologist

SAT

public SAT(java.lang.String creator,
           java.lang.String provider,
           Cryptologist c)

Method Detail

unwrap

public java.util.Map<java.lang.String,java.io.Serializable> unwrap(byte[] encrypted,
                                                                   boolean bCheckSignature)
                                                            throws CryptologistException

Decrypt, and verify a packet (using our preconfigured Cryptologist)

Parameters:

encrypted - the encrypted packet

Returns:

a hashmap with the Parameters and an additional parameter "ADM_SIGNED_BY" containing the sender's ID

Throws:

CryptologistException

wrap

public byte[] wrap(java.util.Map<java.lang.String,java.io.Serializable> var,
                   java.lang.String dest)
            throws CryptologistException

Sign and encrypt a HashMap. We sign the unencrypted data and encrypt later. This imposes more load on verifying (since it must be decrypted prior to verify the signature) but improves stability against replay attacks.

Parameters:

hash - a hashtable containing arbitrary String/Object pairs. All objects must be Serializables. Keynames starting with ADM_ are reserved and must not be used.

dest - the receiver. The Object will be encoded with the receiver's public key

Returns:

a byte array containing the signed and encrypted Hashmap. This will remain valid for 5 Minutes.

Throws:

java.lang.Exception

CryptologistException

sendRequest

@Deprecated
public java.lang.String sendRequest(java.lang.String hostaddress,
                                               java.lang.String request)

Deprecated.

sendRequest

public byte[] sendRequest(java.lang.String hostaddress,
                          byte[] request)