public void testRsaDecryption()
{
TestTpmPrivateKey.KeyTestData dataSet = rsaKeyTestData;
byte[] pkcs8 = net.named_data.jndn.util.Common.base64Decode(dataSet.privateKeyPkcs8Unencrypted);
TpmPrivateKey key = new TpmPrivateKey();
key.loadPkcs8(ILOG.J2CsMapping.NIO.ByteBuffer.wrap(pkcs8));
Blob plainText = new Blob(new int[] { 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07 });
String cipherTextBase64 = "i2XNpZ2JbLa4JmBTdDrGmsd4/0C+p+BSCpW3MuPBNe5uChQ0eRO1dvjTnEqwSECY\n"
+ "38en9JZwcyb0It/TSFNXHlq+Z1ZpffnjIJxQR9HcgwvwQJh6WRH0vu38tvGkGuNv\n"
+ "60Rdn85hqSy1CikmXCeWXL9yCqeqcP21R94G/T3FuA+c1FtFko8KOzCwvrTXMO6n\n"
+ "5PNsqlLXabSGr+jz4EwOsSCgPkiDf9U6tXoSPRA2/YvqFQdaiUXIVlomESvaqqZ8\n"
+ "FxPs2BON0lobM8gT+xdzbRKofp+rNjNK+5uWyeOnXJwzCszh17cdJl2BH1dZwaVD\n"
+ "PmTiSdeDQXZ94U5boDQ4Aw==\n";
byte[] cipherText = net.named_data.jndn.util.Common.base64Decode(cipherTextBase64);
Blob decryptedText = key.decrypt(ILOG.J2CsMapping.NIO.ByteBuffer.wrap(cipherText));
Assert.AssertTrue(decryptedText.equals(plainText));
}
/// <summary>
/// Decrypt the encryptedData using the keyBits according the encrypt params.
/// </summary>
///
/// <param name="keyBits">The key value (PKCS8-encoded private key).</param>
/// <param name="encryptedData">The data to decrypt.</param>
/// <param name="params">This decrypts according to params.getAlgorithmType().</param>
/// <returns>The decrypted data.</returns>
public static Blob decrypt(Blob keyBits, Blob encryptedData,
EncryptParams paras)
{
TpmPrivateKey privateKey = new TpmPrivateKey();
try {
privateKey.loadPkcs8(keyBits.buf());
} catch (TpmPrivateKey.Error ex) {
throw new SecurityException("decrypt: Error in loadPkcs8: " + ex);
}
try {
return(privateKey.decrypt(encryptedData.buf(),
paras.getAlgorithmType()));
} catch (TpmPrivateKey.Error ex_0) {
throw new SecurityException("decrypt: Error in decrypt: " + ex_0);
}
}