Examples with GMac org.bouncycastle.crypto.macs.GMac used on opensource projects

Example 1 with GMac

use of org.bouncycastle.crypto.macs.GMac in project xipki by xipki.

the class EmulatorP11Identity method aesGmac.

// TODO: check the correctness
private byte[] aesGmac(P11Params params, byte[] contentToSign) throws P11TokenException {
    if (params == null) {
        throw new P11TokenException("iv must not be null");
    }
    byte[] iv;
    if (params instanceof P11IVParams) {
        iv = ((P11IVParams) params).getIV();
    } else {
        throw new P11TokenException("params must be instanceof P11IVParams");
    }
    GMac gmac = new GMac(new GCMBlockCipher(new AESEngine()));
    ParametersWithIV paramsWithIv = new ParametersWithIV(new KeyParameter(signingKey.getEncoded()), iv);
    gmac.init(paramsWithIv);
    gmac.update(contentToSign, 0, contentToSign.length);
    byte[] signature = new byte[gmac.getMacSize()];
    gmac.doFinal(signature, 0);
    return signature;
}