It is currently believed that the NSA does not have the capability to crack Tor keys due to the cryptographic strength of the keys used by Tor Hidden Services. The keys used by Tor Hidden Services are based on Diffie-Hellman Key Exchange, which is considered to be a secure mathematical approach for establishing encryption keys over public networks. However, it is essential to understand that advancements in the computing power and cryptanalysis techniques might challenge the security of these keys in the future.