Another workaround is to encrypt with a key that is a checksom sum on random bits stored one each by all your users. When a judge demands your private key, the

Another workaround is to encrypt with a key that is a checksom sum on random bits stored one each by all your users. When a judge demands your private key, the only way to get it is to send an email to everyone asking for their secret bit. The trick is that this information has to be useful to law enforcement but not your business. (Because you can't access it either).