Java Security

Hi All,

We used RSA algorithm for encryption mechanism. It's done in C# and it generated public and private XML files.

Now we want to decrypt the message in Java using privatekey.xml.

"<BitStrength>512</BitStrength>
<RSAKeyValue>
<Modulus>bp+VnREDCrjXk2rYLO8Cw==</Modulus>
<Exponent>AB</Exponent>
<P>9RaE0bETZDNbTAUs=</P>
<Q>y9ZkzQAmrdvjyA4L+5CIEE=</Q>
<DP>GdARrJTH4/FQwmc=</DP>
<DQ>SEH3+Uhd9nvsAE=</DQ>
<InverseQ>ZssVlzUgA8hE=</InverseQ>
<D>vssaRCZSkm3RClMTCyVyRnjIAQ==</D>
</RSAKeyValue>" 

By googling we got a class RSAPrivateCrtKeySpec which accepts 8 parameters which are there in xml -

public RSAPrivateCrtKeySpec(BigInteger modulus,
                            BigInteger publicExponent,
                            BigInteger privateExponent,
                            BigInteger primeP,
                            BigInteger primeQ,
                            BigInteger primeExponentP,
                            BigInteger primeExponentQ,
                            BigInteger crtCoefficient)

I have provided all the values and it's throwing NumberFormatException because values contain =+u/ etc...

Please advice me of how to approach this problem.

Thanks,
Kranthi Kiran