The federal government has spent about $1 billion on 89 public key infrastructure programs among 20 major agencies in recent years, but the results of those programs are mixed, according to a report issued by the General Accounting Office. PKI is a secure method for exchanging information within an organization, within an industry, nationwide, or worldwide. . . .
The federal government has spent about $1 billion on 89 public key infrastructure programs among 20 major agencies in recent years, but the results of those programs are mixed, according to a report issued by the General Accounting Office.

PKI is a secure method for exchanging information within an organization, within an industry, nationwide, or worldwide.

Implementing PKI poses a major challenge for agencies, Linda Koontz, GAO's director of information management issues, wrote in a letter to Reps. Tom Davis and Adam Putnam, who chair House panels with oversight on governmental IT use. The letter was dated Dec. 15, but released Thursday.

GAO, the investigative arm of Congress, identified four major challenges:

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