key_manager.py 文件源码

def compute_rsa_private_key(cls, p, q, e, n, d):
        """
        Computes RSA private key based on provided RSA semi-primes
            and returns cryptography lib instance.

        @developer: tnanoba

        :param p: int
        :param q: int
        :param e: int
        :param n: int
        :param d: int
        :return: object
        """

        # Computes: d % (p - 1)
        dmp1 = rsa.rsa_crt_dmp1(d, p)

        # Computes: d % (q - 1)
        dmq1 = rsa.rsa_crt_dmq1(d, q)

        # Modular inverse q of p, (q ^ -1 mod p)
        iqmp = rsa.rsa_crt_iqmp(p, q)

        public_numbers = rsa.RSAPublicNumbers(e, n)

        return rsa.RSAPrivateNumbers(p, q, d, dmp1, dmq1, iqmp, public_numbers).private_key(default_backend())