How to use the oscrypto._asn1.int_from_bytes function in oscrypto

len1 = bit_size // 8
    len2 = bit_size // 16

    prime1_offset = len1
    prime2_offset = prime1_offset + len2
    exponent1_offset = prime2_offset + len2
    exponent2_offset = exponent1_offset + len2
    coefficient_offset = exponent2_offset + len2
    private_exponent_offset = coefficient_offset + len2

    public_exponent = blob_struct.rsapubkey.pubexp
    modulus = int_from_bytes(blob[0:prime1_offset][::-1])
    prime1 = int_from_bytes(blob[prime1_offset:prime2_offset][::-1])
    prime2 = int_from_bytes(blob[prime2_offset:exponent1_offset][::-1])
    exponent1 = int_from_bytes(blob[exponent1_offset:exponent2_offset][::-1])
    exponent2 = int_from_bytes(blob[exponent2_offset:coefficient_offset][::-1])
    coefficient = int_from_bytes(blob[coefficient_offset:private_exponent_offset][::-1])
    private_exponent = int_from_bytes(blob[private_exponent_offset:private_exponent_offset + len1][::-1])

    public_key_info = PublicKeyInfo({
        'algorithm': PublicKeyAlgorithm({
            'algorithm': 'rsa',
        }),
        'public_key': RSAPublicKey({
            'modulus': modulus,
            'public_exponent': public_exponent,
        }),
    })

    rsa_private_key = RSAPrivateKey({
        'version': 'two-prime',
        'modulus': modulus,

"""

    len1 = bit_size // 8
    len2 = bit_size // 16

    prime1_offset = len1
    prime2_offset = prime1_offset + len2
    exponent1_offset = prime2_offset + len2
    exponent2_offset = exponent1_offset + len2
    coefficient_offset = exponent2_offset + len2
    private_exponent_offset = coefficient_offset + len2

    public_exponent = blob_struct.rsapubkey.pubexp
    modulus = int_from_bytes(blob[0:prime1_offset][::-1])
    prime1 = int_from_bytes(blob[prime1_offset:prime2_offset][::-1])
    prime2 = int_from_bytes(blob[prime2_offset:exponent1_offset][::-1])
    exponent1 = int_from_bytes(blob[exponent1_offset:exponent2_offset][::-1])
    exponent2 = int_from_bytes(blob[exponent2_offset:coefficient_offset][::-1])
    coefficient = int_from_bytes(blob[coefficient_offset:private_exponent_offset][::-1])
    private_exponent = int_from_bytes(blob[private_exponent_offset:private_exponent_offset + len1][::-1])

    public_key_info = PublicKeyInfo({
        'algorithm': PublicKeyAlgorithm({
            'algorithm': 'rsa',
        }),
        'public_key': RSAPublicKey({
            'modulus': modulus,
            'public_exponent': public_exponent,
        }),
    })

    rsa_private_key = RSAPrivateKey({

asn1crypto.keys.PrivateKeyInfo)
    """

    len1 = bit_size // 8
    len2 = bit_size // 16

    prime1_offset = len1
    prime2_offset = prime1_offset + len2
    exponent1_offset = prime2_offset + len2
    exponent2_offset = exponent1_offset + len2
    coefficient_offset = exponent2_offset + len2
    private_exponent_offset = coefficient_offset + len2

    public_exponent = blob_struct.rsapubkey.pubexp
    modulus = int_from_bytes(blob[0:prime1_offset][::-1])
    prime1 = int_from_bytes(blob[prime1_offset:prime2_offset][::-1])
    prime2 = int_from_bytes(blob[prime2_offset:exponent1_offset][::-1])
    exponent1 = int_from_bytes(blob[exponent1_offset:exponent2_offset][::-1])
    exponent2 = int_from_bytes(blob[exponent2_offset:coefficient_offset][::-1])
    coefficient = int_from_bytes(blob[coefficient_offset:private_exponent_offset][::-1])
    private_exponent = int_from_bytes(blob[private_exponent_offset:private_exponent_offset + len1][::-1])

    public_key_info = PublicKeyInfo({
        'algorithm': PublicKeyAlgorithm({
            'algorithm': 'rsa',
        }),
        'public_key': RSAPublicKey({
            'modulus': modulus,
            'public_exponent': public_exponent,
        }),
    })

A 2-element tuple of (asn1crypto.keys.PublicKeyInfo,
        asn1crypto.keys.PrivateKeyInfo)
    """

    len1 = bit_size // 8
    len2 = bit_size // 16

    prime1_offset = len1
    prime2_offset = prime1_offset + len2
    exponent1_offset = prime2_offset + len2
    exponent2_offset = exponent1_offset + len2
    coefficient_offset = exponent2_offset + len2
    private_exponent_offset = coefficient_offset + len2

    public_exponent = blob_struct.rsapubkey.pubexp
    modulus = int_from_bytes(blob[0:prime1_offset][::-1])
    prime1 = int_from_bytes(blob[prime1_offset:prime2_offset][::-1])
    prime2 = int_from_bytes(blob[prime2_offset:exponent1_offset][::-1])
    exponent1 = int_from_bytes(blob[exponent1_offset:exponent2_offset][::-1])
    exponent2 = int_from_bytes(blob[exponent2_offset:coefficient_offset][::-1])
    coefficient = int_from_bytes(blob[coefficient_offset:private_exponent_offset][::-1])
    private_exponent = int_from_bytes(blob[private_exponent_offset:private_exponent_offset + len1][::-1])

    public_key_info = PublicKeyInfo({
        'algorithm': PublicKeyAlgorithm({
            'algorithm': 'rsa',
        }),
        'public_key': RSAPublicKey({
            'modulus': modulus,
            'public_exponent': public_exponent,
        }),
    })

Creates a generator returning tuples of information about each message in
    a byte string of data from a TLS handshake record

    :param data:
        A byte string of a TLS handshake record data

    :return:
        A generator that yields 2-element tuples:
        [0] Byte string of message type
        [1] Byte string of message data
    """

    pointer = 0
    data_len = len(data)
    while pointer < data_len:
        length = int_from_bytes(data[pointer + 1:pointer + 4])
        yield (
            data[pointer:pointer + 1],
            data[pointer + 4:pointer + 4 + length]
        )
        pointer += 4 + length

elif key_type == 'private':
        prime1_byte_length = native(int, blob_struct.cbPrime1)
        prime2_byte_length = native(int, blob_struct.cbPrime2)

        prime1_offset = modulus_offset + modulus_byte_length
        prime2_offset = prime1_offset + prime1_byte_length
        exponent1_offset = prime2_offset + prime2_byte_length
        exponent2_offset = exponent1_offset + prime2_byte_length
        coefficient_offset = exponent2_offset + prime2_byte_length
        private_exponent_offset = coefficient_offset + prime1_byte_length

        prime1 = int_from_bytes(blob[prime1_offset:prime2_offset])
        prime2 = int_from_bytes(blob[prime2_offset:exponent1_offset])
        exponent1 = int_from_bytes(blob[exponent1_offset:exponent2_offset])
        exponent2 = int_from_bytes(blob[exponent2_offset:coefficient_offset])
        coefficient = int_from_bytes(blob[coefficient_offset:private_exponent_offset])
        private_exponent = int_from_bytes(blob[private_exponent_offset:private_exponent_offset + modulus_byte_length])

        rsa_private_key = RSAPrivateKey({
            'version': 'two-prime',
            'modulus': modulus,
            'public_exponent': public_exponent,
            'private_exponent': private_exponent,
            'prime1': prime1,
            'prime2': prime2,
            'exponent1': exponent1,
            'exponent2': exponent2,
            'coefficient': coefficient,
        })

        return PrivateKeyInfo({

})

    elif key_type == 'private':
        prime1_byte_length = native(int, blob_struct.cbPrime1)
        prime2_byte_length = native(int, blob_struct.cbPrime2)

        prime1_offset = modulus_offset + modulus_byte_length
        prime2_offset = prime1_offset + prime1_byte_length
        exponent1_offset = prime2_offset + prime2_byte_length
        exponent2_offset = exponent1_offset + prime2_byte_length
        coefficient_offset = exponent2_offset + prime2_byte_length
        private_exponent_offset = coefficient_offset + prime1_byte_length

        prime1 = int_from_bytes(blob[prime1_offset:prime2_offset])
        prime2 = int_from_bytes(blob[prime2_offset:exponent1_offset])
        exponent1 = int_from_bytes(blob[exponent1_offset:exponent2_offset])
        exponent2 = int_from_bytes(blob[exponent2_offset:coefficient_offset])
        coefficient = int_from_bytes(blob[coefficient_offset:private_exponent_offset])
        private_exponent = int_from_bytes(blob[private_exponent_offset:private_exponent_offset + modulus_byte_length])

        rsa_private_key = RSAPrivateKey({
            'version': 'two-prime',
            'modulus': modulus,
            'public_exponent': public_exponent,
            'private_exponent': private_exponent,
            'prime1': prime1,
            'prime2': prime2,
            'exponent1': exponent1,
            'exponent2': exponent2,
            'coefficient': coefficient,
        })

An instance of BCRYPT_RSAKEY_BLOB

    :param blob:
        A byte string of the binary data contained after the struct

    :return:
        An asn1crypto.keys.PrivateKeyInfo or asn1crypto.keys.PublicKeyInfo
        object, based on the key_type param
    """

    public_exponent_byte_length = native(int, blob_struct.cbPublicExp)
    modulus_byte_length = native(int, blob_struct.cbModulus)

    modulus_offset = public_exponent_byte_length

    public_exponent = int_from_bytes(blob[0:modulus_offset])
    modulus = int_from_bytes(blob[modulus_offset:modulus_offset + modulus_byte_length])

    if key_type == 'public':
        return PublicKeyInfo({
            'algorithm': PublicKeyAlgorithm({
                'algorithm': 'rsa',
            }),
            'public_key': RSAPublicKey({
                'modulus': modulus,
                'public_exponent': public_exponent,
            }),
        })

    elif key_type == 'private':
        prime1_byte_length = native(int, blob_struct.cbPrime1)
        prime2_byte_length = native(int, blob_struct.cbPrime2)