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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 compute_master(context):
 """Computes master key from transformed key and master seed. Used in payload decryption."""


    # combine the transformed key with the header master seed to find the master_key
    master_key = hashlib.sha256(
        context._.header.value.dynamic_header.master_seed.data +
        context.transformed_key).digest()
    return master_key