Re: How few characters in a brain wallet before it gets really difficult to crack
maybe 100 characters that are easy to remember like your email address plus 16 to 20 truly random alphanumeric characters.
The email address makes it specific to you so a general sweep of the block chain by a password cracker doesn't pick you up. The 16 to 20 truly random part gives you over 100 bits of entropy. Not ironclad but good.
You know you will forget the password unless you store it in a safe place. Why not just export a secret key generated by a good computer algorithm to paper?
The email address makes it specific to you so a general sweep of the block chain by a password cracker doesn't pick you up. The 16 to 20 truly random part gives you over 100 bits of entropy. Not ironclad but good.
You know you will forget the password unless you store it in a safe place. Why not just export a secret key generated by a good computer algorithm to paper?
I am making metal "brain" wallets. In copper and brass. 2 copies. one for backup. Fire proof
Stamping the chars in the metal takes time so I want to keep it to a minimum.