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Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption. The service starts at 10 EUR/Month/User/100GB; there is a 14-day trial. They offer 3GB for free rising to 5GB after completion of an in-app familiarization tour. It has been likened to a high-security alternative to Dropbox. As an added measure for security, Tresorit's service is only accessible through client desktop software. A web-based file uploader does not exist. Currently, the software is available for Windows, Mac, Android, Windows Phone 8, iOS, BlackBerry OS. and Linux Tresorit was founded in 2011 by Hungarian programmers Istvan Lam, who remains CEO, Szilveszter Szebeni, who is currently CIO and Gyorgy Szilagyi, who is the CPO of the company. Tresorit officially launched its end-to-end encrypted cloud storage service after emerging from its stealth beta in April 2014.〔(Tresorit opens its end-to-end encrypted file-sharing service to the public )〕 ==Technology== Tresorit encrypts files using client-side encryption with AES-256 before uploading them. Files are also secured by HMAC message authentication codes applied on SHA-512 hashes.〔(Get 50GB of Free, Encrypted Online Storage from Tresorit )〕 "Tresore" (German for vaults) are encrypted counterparts of uploaded directories. Tresors automatically sync with the cloud as files are added or removed from them, similar to Box.com and Dropbox's desktop software. The main difference between Tresorit and its competition is that Tresorit applies AES-256 client-side encryption to files while they’re still local and then uploads them to the cloud. There are additional layers of security, but the key info is that the encryption key never leaves the user.〔(Tresorit takes on PRISM-provoked worries with encrypted cloud storage )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tresorit」の詳細全文を読む スポンサード リンク
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