Documents released by WikiLeaks last week appear to support earlier reports that Germany’s federal police plan to use Trojan horse malware to conduct surreptitious searches of targeted computers, including Skype communication and encrypted SSL traffic.

The two scanned documents, which appear on the Wikileaks website in their German form, are difficult to verify, but one appears to describe how a security company, Digitask, was asked to create a “Skype Capture Unit” based around Trojans planted on targeted PCs covertly transferring data to a remote server.

“As requested by you, we hereby submit an offer for a surveillance method of the encrypted VoIP protocol Skype,” says the company hired to carry out the hacking.

Proposals to give explicit permission for law enforcement officials to plant malware stem from a Federal Court ruling last year declaring clandestine searches of suspects’ computers to be inadmissible as evidence, pending a law regulating the practice. Germany’s Federal Court of Justice said the practice was not covered by existing surveillance legislation.