convert Double to BigInteger and retrieving byte array

[Moiez Gohar]

my application requires BigInteger values to be used as prime numbers used to generate RSA encryption and decryption keys.
I am using Microsoft Jet Driver with MS Access 2000, and so had to go for BigDecimal instead of BigInteger (as BigInteger is not a supported type, neither by JDBC nor by Access 2000).

BigDecimal b=new BigDecimal("233");
byte[] a={(byte)1, (byte)3};
String query="insert into Encrypted_AES_Bytes values(?,?)";
p=con.prepareStatement(query);
p.setBytes(1,a);
p.setBigDecimal(2,b);
p.executeUpdate();

now, for retrieving the byte[] from the first column, and the BigDecimal from the next, following is the code:

String query="select * from Encrypted_AES_Bytes";
p=con.prepareStatement(query); 
rs=p.executeQuery();
System.out.println("Encrypted AES bytes"+"                      RSA Encryption Key\n");
while(rs.next()){
byte[] b=rs.getBytes(1);
BigInteger i=rs.getBigDecimal(2).toBigInteger();
for(byte x:b) System.out.print(x+" "); 
System.out.println("                 "+i);
}

when i insert any row into my table, the insertion is executed successfully.
but when i issue the selection query, i get the result in which the byte arrays are succeeded by a number of 0-valued bytes like: for the byte array: {1,3} i get the result as: 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ..... (totally 508 zeroes)

what is wrong with my code?? why am i not getting back the exact byte array as 2 3 ?? please HELP.

[Moiez Gohar]

i am sorry for wrongly phrasing the topic...

my objective is to store byte[] in the first column of the table, and a BigInteger in the next column. I am using MS Access 2000. I am using JDBC:ODBC bridge with Microsoft Jet Driver.

what should i do to attain my aforementioned objective??
should i use a different driver, or a different DBMS??
please guide me!