package sega.a7;

import javacard.security.MessageDigest;

public class PrivkeyModulusWrite extends AuthCommand {
    private static final short RECV_PACKET_SIZE = 302;
    private static final byte AUTH_LEVEL = 2;
    private static final short PARAM_SIZE = 46;

    public PrivkeyModulusWrite(short cmd, AppData data, MakePacket packet, MessageDigest sha1, HmacSha1 hmacSha1,
            Crypt crypt) {
        super(cmd, RECV_PACKET_SIZE, PARAM_SIZE, AUTH_LEVEL, data, packet, sha1, hmacSha1, crypt);
    }

    public short core(byte[] data, short dataOffset, short dataLength) {
        if (this.m_ee_data.getSflag_ee())
            return AppConfig.A7_EEPWRITE_DISABLE;

        short ramD_dataSize = (short) 256;
        byte[] ramD_newRSAKey = this.m_ee_data.getGeneralBuffer_ramD();
        if (ramD_newRSAKey.length < ramD_dataSize)
            return AppConfig.A7_FAIL;

        short ramD_decSize = decData(data, (short) (6 + dataOffset), ramD_dataSize, ramD_newRSAKey, (short) 0);
        if (ramD_dataSize > ramD_decSize)
            return AppConfig.A7_FAIL;

        if (!this.m_ee_data.setRsaPriKeyModulus_ee(ramD_newRSAKey, (short) 0, (short) 256))
            return AppConfig.A7_EEP_WRITEFAIL;

        this.m_ee_data.activeRssaModulusUpdate_ramD();
        if (this.m_ee_data.getRsaExponentUpdate_ramD()) {
            byte[] exponent = this.m_ee_data.getRsaPriExponent_ee();
            byte[] modulus = this.m_ee_data.getRsaPriModulus_ee();
            if (!changeRsaKey_ee(modulus, (short) 0, (short) modulus.length, exponent, (short) 0,
                    (short) exponent.length))
                return AppConfig.A7_FAIL;
        }

        return AppConfig.A7_SUCCESS;
    }
}