src/OpenSSL/crypto.py
def generate_key(self, type, bits):
        """
        Generate a key pair of the given type, with the given number of bits.

        This generates a key "into" the this object.

        :param type: The key type.
        :type type: :py:data:`TYPE_RSA` or :py:data:`TYPE_DSA`
        :param bits: The number of bits.
        :type bits: :py:data:`int` ``>= 0``
        :raises TypeError: If :py:data:`type` or :py:data:`bits` isn't
            of the appropriate type.
        :raises ValueError: If the number of bits isn't an integer of
            the appropriate size.
        :return: ``None``
        """
        if not isinstance(type, int):
            raise TypeError("type must be an integer")

        if not isinstance(bits, int):
            raise TypeError("bits must be an integer")

        if type == TYPE_RSA:
            if bits <= 0:
                raise ValueError("Invalid number of bits")

            # TODO Check error return
            exponent = _lib.BN_new()
            exponent = _ffi.gc(exponent, _lib.BN_free)
            _lib.BN_set_word(exponent, _lib.RSA_F4)

            rsa = _lib.RSA_new()

            result = _lib.RSA_generate_key_ex(rsa, bits, exponent, _ffi.NULL)
            _openssl_assert(result == 1)

            result = _lib.EVP_PKEY_assign_RSA(self._pkey, rsa)
            _openssl_assert(result == 1)

        elif type == TYPE_DSA:
            dsa = _lib.DSA_new()
            _openssl_assert(dsa != _ffi.NULL)

            dsa = _ffi.gc(dsa, _lib.DSA_free)
            res = _lib.DSA_generate_parameters_ex(
                dsa, bits, _ffi.NULL, 0, _ffi.NULL, _ffi.NULL, _ffi.NULL
            )
            _openssl_assert(res == 1)

            _openssl_assert(_lib.DSA_generate_key(dsa) == 1)
            _openssl_assert(_lib.EVP_PKEY_set1_DSA(self._pkey, dsa) == 1)
        else:
            raise Error("No such key type")

        self._initialized = True
def generate_key(self, type, bits):
        """
        Generate a key pair of the given type, with the given number of bits.

        This generates a key "into" the this object.

        :param type: The key type.
        :type type: :py:data:`TYPE_RSA` or :py:data:`TYPE_DSA`
        :param bits: The number of bits.
        :type bits: :py:data:`int` ``>= 0``
        :raises TypeError: If :py:data:`type` or :py:data:`bits` isn't
            of the appropriate type.
        :raises ValueError: If the number of bits isn't an integer of
            the appropriate size.
        :return: ``None``
        """
        if not isinstance(type, int):
            raise TypeError("type must be an integer")

        if not isinstance(bits, int):
            raise TypeError("bits must be an integer")

        if type == TYPE_RSA:
            if bits <= 0:
                raise ValueError("Invalid number of bits")

            # TODO Check error return
            exponent = _lib.BN_new()
            exponent = _ffi.gc(exponent, _lib.BN_free)
            _lib.BN_set_word(exponent, _lib.RSA_F4)

            rsa = _lib.RSA_new()

            result = _lib.RSA_generate_key_ex(rsa, bits, exponent, _ffi.NULL)
            _openssl_assert(result == 1)

            result = _lib.EVP_PKEY_assign_RSA(self._pkey, rsa)
            _openssl_assert(result == 1)

        elif type == TYPE_DSA:
            dsa = _lib.DSA_new()
            _openssl_assert(dsa != _ffi.NULL)

            dsa = _ffi.gc(dsa, _lib.DSA_free)
            res = _lib.DSA_generate_parameters_ex(
                dsa, bits, _ffi.NULL, 0, _ffi.NULL, _ffi.NULL, _ffi.NULL
            )
            _openssl_assert(res == 1)

            _openssl_assert(_lib.DSA_generate_key(dsa) == 1)
            _openssl_assert(_lib.EVP_PKEY_set1_DSA(self._pkey, dsa) == 1)
        else:
            raise Error("No such key type")

        self._initialized = True
Generate a key pair of the given type, with the given number of bits.

        This generates a key "into" the this object.

        :param type: The key type.
        :type type: :py:data:`TYPE_RSA` or :py:data:`TYPE_DSA`
        :param bits: The number of bits.
        :type bits: :py:data:`int` ``>= 0``
        :raises TypeError: If :py:data:`type` or :py:data:`bits` isn't
            of the appropriate type.
        :raises ValueError: If the number of bits isn't an integer of
            the appropriate size.
        :return: ``None``