Artificial Intelligence Solves 25-Year Encryption Mystery Involving National Security Agency
San Francisco, Sunday, 18 October 2026.
Anthropic’s artificial intelligence model, Claude, has resolved a quarter-century-old cryptographic mystery in under 30 minutes. Researchers revealed that mysterious security numbers supplied by the National Security Agency in the late 1990s were generated using a basic computer clock program rather than a hidden backdoor. For decades, cryptographers harbored suspicions that these unexplained foundational numbers contained deliberate security weaknesses designed for government surveillance. The AI’s rapid analysis traced the exact system timestamps from 1997 and 1998 used to create the values, effectively ruling out intentional vulnerabilities and offering key reassurance for global digital security standards.
Technical Breakthrough and Methodology
On October 16, 2026, Anthropic disclosed that an internal research model, identified as Claude, successfully reverse-engineered the origin of five cryptographic seeds provided by the National Security Agency (NSA) during the late 1990s [1][3]. The AI model determined that the seeds were generated using lrand48, a standard pseudorandom number generator found in 1990s C libraries, seeded with system clock timestamps between May 1997 and April 1998 [1][4]. This discovery was made in under 30 minutes of processing time, highlighting the rapid analytical capabilities of frontier artificial intelligence models in solving complex mathematical problems [4][6]. The specific P-256 seed was identified as candidate number 1,842 from a generation run initiated on August 16, 1997, at 1:52:34 a.m. UTC [1][5].
Market and Security Implications
From an enterprise risk perspective, Anthropic has stated that there is no immediate action required for users of NIST curves, as the findings indicate the curves are likely secure and free of deliberate backdoors [2][3]. This assurance is critical for financial institutions and technology firms relying on P-256 and related curves for passkey logins and website security, as it validates the integrity of legacy encryption standards still in widespread use [5][6]. While Bitcoin remains unaffected due to its use of the secp256k1 curve, the resolution of this mystery removes a longstanding uncertainty clouding the broader digital asset and cybersecurity markets [2][3].
Historical Context and Resolution
The resolution of this 28 year-old mystery concludes a chapter of cryptographic skepticism that began when the NSA supplied the seeds without explanation during the Clinton administration [1][4]. In 2023, cryptographer Filippo Valsorda issued a bounty for tracing the origin of the NSA seeds, which was claimed on October 15, 2026, by ten Anthropic researchers [1][3]. The prize money, totaling $36,864 after being tripled in value, will be donated to the Internet Security Research Group (ISRG), the nonprofit entity operating Let’s Encrypt [1][3].