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I think it is the best solution for cloud storage data security. All of your data is encrypted, and the cloud storage provider doesn’t have the key, only you, the user does. In other words, the provider has “zero knowledge” of the encryption key. It also goes a long way towards keeping your data secure against government snooping. For example, Google may have to comply with a “request” to share your data, but all they would be able to share is encrypted and there is nothing they can do about it.