How Did Wikileaks Do It?

grassy_knoll writes "Related to the Wikileaks video recently released and discussed here, the NY Times reports: 'Somehow — it will not say how — WikiLeaks found the necessary computer time to decrypt a graphic video, released Monday, of a United States Army assault in Baghdad in 2007 that left 12 people dead, including two employees of the news agency Reuters. The video has been viewed more than two million times on YouTube, and has been replayed hundreds of times in television news reports.' The article is light on details; what encryption algorithm was used? Was this a brute force attack? Did someone pass the decryption keys to Wikileaks along with the video? Something else?"