Bitcoin Forum

Bitcoin => Bitcoin Technical Support => Topic started by: Dragonkiller on January 07, 2014, 03:50:38 PM



Title: Paper wallet using dice
Post by: Dragonkiller on January 07, 2014, 03:50:38 PM
So I read that rolling a six-sided die, 64 times is sufficient.

I have a pack of 10 dice:

2 are 4 sided
2 are 8 sided
2 are 10 sided
2 are 12 sided
2 are 20 sided

I plan to roll them all together and write down the numbers in no particular order.

How many times do I have to roll them?

Thanks


Title: Re: Paper wallet using dice
Post by: prezbo on January 07, 2014, 03:57:53 PM
that would be 2*(log_2(4)+log_2(8 )+log_2(10)+log_2(12)+log_2(20)) = 32 bits of information. Rolling a 6-sided die 64 times is about 160 bits of information, so you would need to repeat the process 5 times.


Title: Re: Paper wallet using dice
Post by: Dragonkiller on January 07, 2014, 03:59:52 PM
Thanks  :)


Title: Re: Paper wallet using dice
Post by: bitpop on January 08, 2014, 07:05:16 AM
I would use a word list to go with it, I just can't find you the url right now