BigInteger dq = getBigIntFromBase64UrlEncodedParam(params, SECOND_FACTOR_CRT_EXPONENT_MEMBER_NAME, false); BigInteger qi = getBigIntFromBase64UrlEncodedParam(params, FIRST_CRT_COEFFICIENT_MEMBER_NAME, false); privateKey = rsaKeyUtil.privateKey(modulus, publicExponent, d, p, q, dp, dq, qi); privateKey = rsaKeyUtil.privateKey(modulus, d);