![]() ![]() It is not considered secure at the very least, it has serious vulnerabilities to known-plaintext attacks (see this answer for a summary). It's based on using CRC32 to mix the password, a (hopefully) random seed, and the compressed file. It's using the original PKZIP 2.0 encryption (variously referred to as "traditional" or "legacy" encryption), described in section 6 of the. Please include in your answer the algorithm that is used, a possible source for this information, and if it is not AES-256bit/AES-128bit, then how secure the algorithm/method is. The password prompt is repeated to save the Not be echoed if standard error is not a tty, zip will exit Is entered on the terminal in response to a prompt (this will Unfortunately, I can't find any documentation on what algorithm/method the zip command uses to encrypt, whether its AES-256bit, AES-128bit, or something completely different.Įncrypt the contents of the zip archive using a password which This works perfectly, but I would like to make sure that the algorithm/method used to encrypt the zip is secure. I am using macOS Sierra 10.12.6 and through my research I have concluded that encrypting a zip file is done the following way on macOS, In order to send a file securely I am going to encrypt/password protect a zip file. ![]()
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