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Documents leaked by former NSA contractor Edward Snowden show that the NSA created and promulgated a flawed formula for generating random numbers to create a "back door" in encryption products, the New York Times reported in September. Reuters later reported that RSA became the most important distributor of that formula by rolling it into a software tool called Bsafe that is used to enhance security in personal computers and many other products.Undisclosed until now was that RSA received $10 million in a deal that set the NSA formula as the preferred, or default, method for number generation in the BSafe software, according to two sources familiar with the contract. Although that sum might seem paltry, it represented more than a third of the revenue that the relevant division at RSA had taken in during the entire previous year, securities filings show.

RSA, meanwhile, was changing. Bidzos stepped down as CEO in 1999 to concentrate on VeriSign, a security certificate company that had been spun out of RSA. The elite lab Bidzos had founded in Silicon Valley moved east to Massachusetts, and many top engineers left the company, several former employees said.And the BSafe toolkit was becoming a much smaller part of the company. By 2005, BSafe and other tools for developers brought in just $27.5 million of RSA's revenue, less than 9% of the $310 million total."When I joined there were 10 people in the labs, and we were fighting the NSA," said Victor Chan, who rose to lead engineering and the Australian operation before he left in 2005. "It became a very different company later on."By the first half of 2006, RSA was among the many technology companies seeing the U.S. government as a partner against overseas hackers.New RSA Chief Executive Art Coviello and his team still wanted to be seen as part of the technological vanguard, former employees say, and the NSA had just the right pitch. Coviello declined an interview request.An algorithm called Dual Elliptic Curve, developed inside the agency, was on the road to approval by the National Institutes of Standards and Technology as one of four acceptable methods for generating random numbers. NIST's blessing is required for many products sold to the government and often sets a broader de facto standard.RSA adopted the algorithm even before NIST approved it. The NSA then cited the early use of Dual Elliptic Curve inside the government to argue successfully for NIST approval, according to an official familiar with the proceedings.RSA's contract made Dual Elliptic Curve the default option for producing random numbers in the RSA toolkit. No alarms were raised, former employees said, because the deal was handled by business leaders rather than pure technologists.

Earlier Edward Snowden leaks had revealed that the NSA created a flawed random number generation system (Dual_EC_DRBG), Dual Elliptic Curve, which RSA used in its Bsafe security tool and now Snowden has revealed that RSA received $10 million from NSA for keeping Encryption Weak. So, anyone who knows the right numbers used in Random number generator program, can decipher the resulting cryptotext easily.

Here, we describe a new acoustic cryptanalysis key extraction attack, applicable to GnuPG's current implementation of RSA. The attack can extract full 4096-bit RSA decryption keys from laptop computers (of various models), within an hour, using the sound generated by the computer during the decryption of some chosen ciphertexts. We experimentally demonstrate that such attacks can be carried out, using either a plain mobile phone placed next to the computer, or a more sensitive microphone placed 4 meters away.

A team of computer security experts at Tel Aviv University (Israel) has come up with a new potentially much simpler method that lets you steal data from computers — Just Touch it — literally.

In order to victimize any computer, all you need to do is wear a special digitizer wristband and touch the exposed part of the system. The wristband will measure all the tiny changes in the ground electrical potential that can reveal even stronger encryption keys, such as a 4,096-bit RSA key.

in some cases, you don't even have to touch the system directly with your bare hands. You can intercept encryption keys from attached network and video cables as well. Researchers called it a side-channel attack.