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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 validate_and_decode(jwt_bu64, cert_obj):
 """Validate the JWT and return as a dict. - JWTs contain a set of values serialized to a JSON dict. This decodes the JWT and returns it as a dict. Args: jwt_bu64: bytes The JWT encoded using a a URL safe flavor of Base64. cert_obj: cryptography.Certificate Public certificate used for signing the JWT (typically the CN cert). Raises: JwtException: If validation fails. Returns: dict: Values embedded in the JWT. """

    try:
        return jwt.decode(
            jwt_bu64.strip(), cert_obj.public_key(), algorithms=['RS256'], verify=True
        )
    except jwt.InvalidTokenError as e:
        raise JwtException('Signature is invalid. error="{}"'.format(str(e)))