Examples with IEKeySpec org.gudy.bouncycastle.jce.spec.IEKeySpec used on opensource projects

Example 1 with IEKeySpec

use of org.gudy.bouncycastle.jce.spec.IEKeySpec in project BiglyBT by BiglySoftware.

the class CryptoHandlerECC method decrypt.

@Override
public byte[] decrypt(byte[] other_public_key, byte[] data, String reason) throws CryptoManagerException {
    try {
        IEKeySpec key_spec = new IEKeySpec(getMyPrivateKey(reason), CryptoECCUtils.rawdataToPubkey(other_public_key));
        byte[] d = new byte[16];
        byte[] e = new byte[16];
        System.arraycopy(data, 0, d, 0, 16);
        System.arraycopy(data, 16, e, 0, 16);
        IESParameterSpec param = new IESParameterSpec(d, e, 128);
        InternalECIES cipher = new InternalECIES();
        cipher.internalEngineInit(Cipher.DECRYPT_MODE, key_spec, param, null);
        return (cipher.internalEngineDoFinal(data, 32, data.length - 32));
    } catch (CryptoManagerException e) {
        throw (e);
    } catch (Throwable e) {
        throw (new CryptoManagerException("Decrypt failed", e));
    }
}

Example 2 with IEKeySpec

use of org.gudy.bouncycastle.jce.spec.IEKeySpec in project BiglyBT by BiglySoftware.

the class CryptoHandlerECC method encrypt.

@Override
public byte[] encrypt(byte[] other_public_key, byte[] data, String reason) throws CryptoManagerException {
    try {
        IEKeySpec key_spec = new IEKeySpec(getMyPrivateKey(reason), CryptoECCUtils.rawdataToPubkey(other_public_key));
        byte[] d = new byte[16];
        byte[] e = new byte[16];
        RandomUtils.nextSecureBytes(d);
        RandomUtils.nextSecureBytes(e);
        IESParameterSpec param = new IESParameterSpec(d, e, 128);
        InternalECIES cipher = new InternalECIES();
        cipher.internalEngineInit(Cipher.ENCRYPT_MODE, key_spec, param, null);
        byte[] encrypted = cipher.internalEngineDoFinal(data, 0, data.length);
        byte[] result = new byte[32 + encrypted.length];
        System.arraycopy(d, 0, result, 0, 16);
        System.arraycopy(e, 0, result, 16, 16);
        System.arraycopy(encrypted, 0, result, 32, encrypted.length);
        return (result);
    } catch (CryptoManagerException e) {
        throw (e);
    } catch (Throwable e) {
        throw (new CryptoManagerException("Encrypt failed", e));
    }
}