Post-Quantum Cryptography Intelligence
PQCRadar brings together everything you need to understand, explore, and navigate the transition to Post-Quantum Cryptography.
The Quantum Threat and Transition
The world's cryptography wasn't built to resist
quantum computers.
RSA, elliptic-curve cryptography, and other public-key systems secure much of the digital world around us. But the emergence of quantum computers could eventually break the security behind these systems, putting communications, identities, and digital assets at risk. What happens when the foundations of the systems we rely on are no longer secure?
01 · Today
Today's Cryptography
Public-key cryptography currently secures much of the digital world.
Widely deployed systems
RSA Cryptosystem
Public-key encryption and signatures based on integer factorization.
ECC
Public-key cryptography based on the hardness of elliptic-curve problems.
DH
Key exchange based on the hardness of the discrete logarithm problem.
Symmetric Cryptography
Shared-key encryption used to protect data at scale.
02 · Threat
Quantum Computing
Large-scale quantum computers threaten widely deployed public-key cryptography.
The main threat
Shor's Algorithm
Efficiently breaks RSA, ECC, DH and other systems.
Grover's Algorithm
Accelerates brute-force search, weakening symmetric cryptography.
03 · Response
Post-Quantum Cryptography
New cryptographic constructions based on problems believed to resist quantum attacks.
Prominent PQC families
Lattice-based
e.g., ML-KEM, ML-DSA
Code-based
e.g., Classic McEliece, BIKE
Hash-based
e.g., SPHINCS+, XMSS
Multivariate-based
e.g., MAYO, UOV
04 · Journey
Migration Ahead
A coordinated transition is required to build a quantum-safe ecosystem.
Migration roadmap
Inventory
Discover and inventory cryptographic assets
Assess
Evaluate quantum risk and prioritize targets
Replace
Implement PQC algorithms and hybrid solutions
Deploy
Roll out, monitor, and continuously improve
The quantum transition is not instantaneous. Migration takes time. Cryptographic inventories, protocol dependencies, certificate lifecycles, and deployed systems must be assessed before replacement can begin.
01 · Today
Today's Cryptography
Public-key cryptography currently secures much of the digital world.
Widely deployed systems
RSA Cryptosystem
Public-key encryption and signatures based on integer factorization.
ECC
Public-key cryptography based on the hardness of elliptic-curve problems.
DH
Key exchange based on the hardness of the discrete logarithm problem.
Symmetric Cryptography
Shared-key encryption used to protect data at scale.
02 · Threat
Quantum Computing
Large-scale quantum computers threaten widely deployed public-key cryptography.
The main threat
Shor's Algorithm
Efficiently breaks RSA, ECC, DH and other systems.
Grover's Algorithm
Accelerates brute-force search, weakening symmetric cryptography.
03 · Response
Post-Quantum Cryptography
New cryptographic constructions based on problems believed to resist quantum attacks.
Prominent PQC families
Lattice-based
e.g., ML-KEM, ML-DSA
Code-based
e.g., Classic McEliece, BIKE
Hash-based
e.g., SPHINCS+, XMSS
Multivariate-based
e.g., MAYO, UOV
04 · Journey
Migration Ahead
A coordinated transition is required to build a quantum-safe ecosystem.
Migration roadmap
Inventory
Discover and inventory cryptographic assets
Assess
Evaluate quantum risk and prioritize targets
Replace
Implement PQC algorithms and hybrid solutions
Deploy
Roll out, monitor, and continuously improve
The quantum transition is not instantaneous. Migration takes time. Cryptographic inventories, protocol dependencies, certificate lifecycles, and deployed systems must be assessed before replacement can begin.
The Ecosystem
Everything shaping the transition, in one place.
The same categories the radar tracks, laid out for reading rather than scanning.
Cryptography Fundamentals
Theoretical and practical foundations of cryptography, from the basics to the advanced.
Explore Cryptography FundamentalsPost-Quantum Cryptography
Lattice, code, hash, and multivariate families, the math and design principles behind them, and the named catalog they produce — ML-KEM, ML-DSA, SLH-DSA, and the rest, with their parameter sets and security categories.
Explore Post-Quantum CryptographyStandards & Specifications
FIPS 203, 204, and 205, and the drafts behind them — what NIST, IETF, ETSI, and BSI have finalized, revised, or still have open for comment.
Explore Standards & SpecificationsImplementations & Tooling
Concrete implementations — liboqs, OpenSSL providers, language SDKs — and the scanners that show what in your stack is still exposed.
Explore Implementations & ToolingProtocols & Applications
How TLS, SSH, Signal, and iMessage are actually integrating post-quantum key exchange and signatures in production today.
Explore Protocols & ApplicationsMigration Engineering
Crypto-agility, hybrid key exchange, and certificate chains — the technical patterns for moving a live system off classical primitives without breaking it.
Explore Migration EngineeringResearch Frontier
New constructions, cryptanalysis attempts, and the open problems keeping the field in motion — what's happening in PQC research right now.
Explore Research FrontierEcosystem & Directory
Organizations, maintainers, and conferences shaping the field — who submitted which algorithm, who maintains which library — kept deliberately shallow as a cross-reference index.
Explore Ecosystem & DirectoryCryptography Fundamentals
Understand the foundations of cryptography.
Behind every cryptographic construction lies a chain of ideas: mathematical structure, computational hardness, security definitions, protocols, and proofs. Explore the foundations that connect these pieces and make modern cryptography work.
- What is Cryptography?
- Security Goals
- Mathematical Foundations
- Computational Foundations
- Randomness & Entropy
- Encryption
- Hash Functions
- Digital Signatures
- Message Authentication Codes (MACs)
- Encryption Schemes
- Signature Schemes
- MAC Schemes
- IND-CPA
- IND-CCA
- EUF-CMA
- SUF-CMA
- Sigma Protocols
- Fiat–Shamir Transform
- Zero-Knowledge Proofs
- Security Games
- Adversaries
- Security Reductions
- Integer Factorization
- Discrete Logarithm Problem
- Elliptic-Curve Discrete Logarithm Problem