[Cryptography] Secret sharing for family members

Ángel angel at crypto.16bits.net
Wed Oct 14 20:50:51 EDT 2020

On 2020-10-10 at 08:29 -0700, Henry Baker wrote:
> In these days of 'digital estates', where each of us
> controls a large swath of digital accounts, there
> appears to be a need for safely sharing secrets with
> family members -- e.g., for medical and/or estate
> planning purposes.
> Here are some desiderata:
> * don't want to trust a single family member
> * family members probably not security conscious,
>   so may inadvertently disclose other family
>   member secrets
> * may need some sort of 'majority' capability
> * ability to 're-key' -- i.e., 'refresh' secrets
> * ...
> Are there any products/services that *safely*
> handle these situations?

Store an offline copy (such as a CD) of the password
manager file holding all those digital estates in a safe.

If the need arises that you are (temporarily or permanently)
unable to handle your 'digital estate', your family member may take the
safe key from you and access it.

A physical solution seems preferable than a cryptonerd one here.


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