RSA, now owned by EMC Corp, did not dispute the research when contacted by Reuters for comment. The company said it had not intentionally weakened security on any product and noted that Extended Random did not prove popular and had been removed from RSA’s protection software in the last six months.
“We could have been more skeptical of NSA’s intentions,” RSA Chief Technologist Sam Curry told Reuters. “We trusted them because they are charged with security for the U.S. government and U.S. critical infrastructure.”
Curry declined to say if the government had paid RSA to incorporate Extended Random in its BSafe security kit, which also housed Dual Elliptic Curve.
An NSA spokeswoman declined to comment on the study or the intelligence agency’s motives in developing Extended Random.
The agency has worked for decades with private companies to improve cybersecurity, largely through its Information Assurance Directorate. After the 9/11 attacks, the NSA increased surveillance, including inside the United States, where it had previously faced strict restrictions.
Documents leaked by former NSA contractor Edward Snowden showed that the agency also aimed to subvert cryptography standards. A presidential advisory group in December said that practice should stop, though experts looking at the case of Dual Elliptic Curve have taken some comfort in concluding that only the NSA could likely break it.
“It’s certainly well-designed,” said security expert Bruce Schneier, a frequent critic of the NSA. “The random number generator is one of the better ones.”