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Re:Show HN: InstantCryptor – AES256 Encryption for Dropbox a... by tptacek on Saturday February 28, 2015 @11:44AM (#9124166)
CBC mode by itself is insecure.
Re:Show HN: InstantCryptor – AES256 Encryption for Dropbox a... by sarciszewski on Saturday February 28, 2015 @12:06PM (#9124258)
OP: You should listen to tptacek. He's forgotten more about crypto than some people have ever learned. :)