[insert obligatory xkcd about rubber hose crypto-analysis here...]
Pass-phrases help mitigate the concerns for stolen private keys, but they do not provide assurances that things will not be signed or encrypted under duress. The best you can really do there is throw in more human element to increase the number of rubber hoses your enemy will need.
Pass-phrases help mitigate the concerns for stolen private keys, but they do not provide assurances that things will not be signed or encrypted under duress. The best you can really do there is throw in more human element to increase the number of rubber hoses your enemy will need.