Discrete Logarithm Problem

Art Of The Problem
Nov 25, 2012
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Cryptographic Security Through Exponential Scaling

ComputationalComplexity ExponentialScaling CryptographicSecurity KeySize

One-way function strength scales exponentially with prime modulus size, making small-number examples trivial while hundred-digit primes resist all known computational attacks.

Discrete Logarithm Problem: Finding Hidden Exponents

DiscreteLogarithm ComputationalHardness CryptographicProblem ExponentRecovery

The discrete logarithm problem challenges solvers to find the hidden exponent x such that g^x ≡ y (mod p), given generator g, modulus p, and result y.

Modular Arithmetic: Clock Arithmetic Foundations

ModularArithmetic ClockArithmetic Congruence NumberTheory

Modular arithmetic, known colloquially as clock arithmetic, provides the mathematical foundation for discrete logarithm-based cryptography through its wrapping behavior.

One-Way Functions: Easy Forward, Hard Reverse

OneWayFunctions Cryptography ComputationalAsymmetry SecurityFoundation

Modern cryptography requires numerical procedures exhibiting computational asymmetry—operations trivial to perform forward but computationally infeasible to reverse.

Prime Modulus: Essential Property for Generators

PrimeModulus PrimeNumbers CryptographicPrimes ModularArithmetic

Cryptographic applications of modular arithmetic specifically require prime moduli rather than composite numbers to enable primitive root generation and uniform distribution.

Primitive Roots: Generators with Uniform Distribution

PrimitiveRoots Generators UniformDistribution ModularExponentiation

For prime modulus 17, the number 3 serves as a primitive root (generator) possessing the critical property that its powers distribute uniformly across all possible residues.