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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def decode_der(cert_der):
 """Decode cert DER string to Certificate object. Args: cert_der : Certificate as a DER encoded string Returns: cryptography.Certificate() """

    return cryptography.x509.load_der_x509_certificate(
        data=cert_der, backend=cryptography.hazmat.backends.default_backend()
    )