This guide explains how to encrypt (password protect) using 7-Zip and how to decrypt (open) a file that is protected by 7 Zip. travelling by email, or being stored on a USB. This is particularly helpful if you just need to protect your document whilst ‘in transit’ e.g. The primary recommended method for password protecting files and folders is 7-Zip as it creates a new copy of the document / folder which is password protected and you only need the password for this new copy. Staff should consult the Information Classification Table and follow the guidance for emailing. The best way is to call the recipient of the Zip file and convey the password over the phone.Below is a downloadable guide to help you encrypt and decrypt files and folders using 7-Zip. Meaning that you send the file and the password by different communication channels one on the internet, and one not. Passwords must be shared via out of band. **IMPORTANT** – Do not share a password via email. The new archive file will be located in the same folder as the original. Step 7: Select “Ok” to create the encrypted archive file. Use a strong password with at least 8 characters containing upper and lowercase letters, and a minimum of one number. It is strongly recommended to use AES-256 to protect sensitive and confidential data. Selecting ZipCrypto may allow users to open the zip file in Windows without a zip program, but it does not provide adequate protection against attackers with modern cracking tools. AES-256 is proven much more secure than ZipCrypto, but if you select AES-256 the recipient of the zip file may have to install 7-zip or another zip program to read the file contents. There is a trade-off between using AES-256 and ZipCrypto. Step 5: Change the Encryption Method to “AES-256”. Step 4: Change the Archive format to “Zip”. Step 3: In the Add to Archive window change the name of the archive you wish to create. Step 2: Select “7-Zip” then “Add to archive…” Step 1: Right click on the file / folder to be encrypted. Once the software is installed, please follow these steps to encrypt a file or folder. To obtain a copy of 7-Zip, please see and select the appropriate Download link. 7-Zip is a free software that creates Zip files that can be opened with WinZip or other similar programs. That archive can be encrypted and protected with a password. When you send or transfer files that contain Personal Identifiable Information (PII) or other confidential and sensitive data, the files must be encrypted to ensure they are protected from unauthorized disclosure.ħ-Zip, like WinZip, creates a container called archive that holds the files to be protected. 7-Zip is an open source software used to compress or zip files secured with encryption.
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January 2023
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