Class Encoder
java.lang.Object
|
+--Encoder
- public class Encoder
- extends java.lang.Object
This class takes an array of bytes as plan text and encodes it.
|
Constructor Summary |
Encoder(java.math.BigInteger e,
java.math.BigInteger n)
Constructs a new Encoder |
|
Method Summary |
java.math.BigInteger |
encode(byte[] clear,
int k)
This takes an array of bytes that are the clear text, encodes it, and
returns the bytes as an encoded BigInteger |
static void |
main(java.lang.String[] args)
Tests the Encoder class |
| Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Encoder
public Encoder(java.math.BigInteger e,
java.math.BigInteger n)
- Constructs a new Encoder
- Parameters:
e, - n
These contain values for the encoding exponent and the modulus
- Postcondition
-
A new Encoder has been created that contains the passed values.
- Throws:
- OutOfMemoryError - Indicates that there is insufficient memory for a new Encoder.
encode
public java.math.BigInteger encode(byte[] clear,
int k)
- This takes an array of bytes that are the clear text, encodes it, and
returns the bytes as an encoded BigInteger
- Parameters:
clear, - k
These are an array of bytes representing the clear text of the
message and an integer that represents the number of bytes that
are in the array.
- Precondition
-
The length of the array clear is greater than or equal to the int
k
- Postcondition
-
k bytes, representing the values found from byte[0] - byte[k-1]
are encoded as a BigInteger
- Returns:
- Returns a BigInteger which represents the encoded data
main
public static void main(java.lang.String[] args)
throws java.io.IOException
- Tests the Encoder class
- Parameters:
args[] - This parameter will be left empty
- Postcondition
-
The BigInteger that represents the encoded value will be printed.
- Throws:
- OutOfMemoryError - Indicates that there is insufficient memory for a new Encoder,
KeyGen, or array of bytes.