I recently tried out a decentralized private messaging tool, it didn’t ask for my personal information to register.

Instead, it only asked me to create a username and set a password, after which it provided me with a mnemonic passcode. (I had never used a mnemonic passcode before, but I learned that it’s a web3 or decentralized type of thing.)

On their FAQ page says “The Mnemonic Passcode is your ONLY SOURCE of backup in a scenario where your device breaks down or becomes unusable due to any reason. In such cases, all you need is your Mnemonic Phrase to recover all your account information. It must be copied, screen-shotted, or written down and kept in a safe and secret place until it is needed.”

Does Mnemonic Passcode more secure than usual password? Plus, is there any other ways to keep you mnemonic phrase?

  • U+1F914 🤔@lemmy.worldEnglish
    4·
    1 year ago

    The security of a fully random password depends on the number of available symbols (alphabet) and the length.
    The strength of the password is simply symbolcount^length.

    For a conventional password the symbols/alphabet are characters, numbers and special characters.
    For a mnemonic the symbols are simply full words and the “alphabet” is a list with a couple thousand words.

    Mnemonic passwords are secure because of their large alphabet, and easy to remember because of the lower length (in symbols) and because human brains are good at coming up with associations (usually stories) for random words.
    If you want to generate your own mnemonic password you can try diceware.
    With diceware you roll a few dice to select random words from a list.