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So, what is end-to-encryption and why is it important? A means of securing up your communication online, end-to-end encryption ensures that only you and your recipient can see your messages. Christianna Silva summarises it for Mashable:
，更多细节参见夫子
Tony Jolliffe BBC
Transforms can be stateless or stateful. A stateless transform is just a function that takes chunks and returns transformed chunks: