Notes about the CRYPTRA file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The CRYPTRA file type is primarily associated with 'Cryptra.exe' by BMB Software. CRYPTRA will open the file you want to send in absolute privacy in read-only mode. It will then create a file with the same name and in the same directory but with a file extension of .cryptra. So if you want to send a file named "Test.txt", you run it through CRYPTRA and it will produce an encrypted file named "Test.cryptra" and this is the file you send. CRYPTRA will also keep track of the OTP files that have been used and how many remain for you to use. CRYPTRA has been designed to be extremely easy to use.