Limits RegistryPUBLIC RECORD
Limits RegistryRon Rivest, Adi Shamir and Leonard Adleman of MIT described the RSA algorithm in 1977, popularized in Martin Gardner's Scientific American column that August and published in Communications of the ACM in 1978. Its security rests on the difficulty of factoring the product of two large primes.
The question, scope, and sources behind this Registry record.
Ron Rivest, Adi Shamir and Leonard Adleman of MIT described the RSA algorithm in 1977, popularized in Martin Gardner's Scientific American column that August and published in Communications of the ACM in 1978. Its security rests on the difficulty of factoring the product of two large primes.
The year Rivest, Shamir and Adleman publicly described the first practical public-key encryption and digital-signature system.
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Current frontiers derived from accepted Claims.
An observed or demonstrated result; no opposing bound is implied.
The frontier is not sacred
Most progress starts with a disagreement that survives contact with evidence. If you can push the known lower bound up or pull the upper bound down, show us the work.
≥ when you have shown that at least this value is achievable.≤ when you have shown that anything above this value is impossible.No vibes. State the value, define the scope, and link the paper, proof, code, or reproduction that lets another person check it. Editors review every challenge before the public record changes.
Challenge this recordAssertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-RSA-CRYPTOSYSTEM-PUBLICATION
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Limits Registry. LR-RSA-CRYPTOSYSTEM-PUBLICATION. First published public-key encryption and signature scheme (RSA). 2026.