- A copy of your private key is kept in a Key Escrow Agency or Key Archival System.
- Sometimes there are multiple database with only part of the private key is kept in each.
- Used for law enforcement(with a warrent)
Hi, As i promised I'm here with the new topic Key-Escrow, actually i was little busy in some secret projects
so now lets get some information about the unique topics,
Other names are Key Recovery, Data recovery, Exceptional. Access and Trusted Third Party.
The technical problem is a largely structural one since access to protected information must be provided only to the intended recipient and at least one third party.
The third party should be permitted access only under carefully controlled conditions, as for instance, a court order. Thus far, no system design has been shown to meet this requirement fully on a technical basis alone.
All proposed systems also require correct functioning of some social linkage, as for instance the process of request for access, examination of request for 'legitimacy' (as by a court), and granting of access by technical personnel charged with access control.
All such linkages / controls have serious problems from a system design security perspective. Systems in which the key may not be changed easily are rendered especially vulnerable as the accidental release of the key will result in many devices becoming totally compromised,
necessitating an immediate key change or replacement of the system.
On a national level, this is controversial in many countries due to technical mistrust of the security of the escrow arrangement (due to a long history of less than adequate protection of others'
information by assorted organizations, public and private, even when the information is held only under an affirmative legal obligation to protect it from unauthorized access), and to a mistrust of the entire system even if it functions as designed.
Thus far, no key escrow system has been designed which meets both objections and nearly all have failed to meet even one.
Key escrow is proactive, anticipating the need for access to keys; a retroactive alternative is key disclosure law, where users are required to surrender keys upon demand by law enforcement, or else face legal penalties.
Key disclosure law avoids some of the technical issues and risks of key escrow systems, but also introduces new risks like loss of keys and legal issues such as involuntary self incrimination. The ambiguous term key recovery is applied to both types of systems.
