🛡️ Security First

Master Cryptography
& Cybersecurity

Comprehensive resource for modern cryptography, encryption algorithms, security protocols, and cybersecurity best practices. From AES to blockchain security.

🔒
AES-256
🔑
RSA-2048
🔗
SHA-256
📜
ECDSA

Cryptography Fundamentals

Master the core principles and mathematical foundations of modern cryptography

🧮

Mathematical Foundations

Number theory, modular arithmetic, prime numbers, and discrete logarithms that form the backbone of cryptographic algorithms.

Number Theory Modular Arithmetic
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Symmetric Cryptography

Block ciphers, stream ciphers, modes of operation, and key management for efficient encryption and decryption processes.

Block Ciphers Stream Ciphers
🗝️

Asymmetric Cryptography

Public-key cryptosystems, key exchange protocols, and digital signatures enabling secure communication without shared secrets.

Public Key Key Exchange
🏷️

Hash Functions

Cryptographic hash functions, message digests, MAC algorithms, and their applications in data integrity and authentication.

SHA Family HMAC
🎲

Random Number Generation

Cryptographically secure pseudorandom number generators (CSPRNGs) and entropy sources for secure key generation.

CSPRNG Entropy
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Key Management

Key generation, distribution, storage, rotation, and destruction protocols for maintaining cryptographic security throughout key lifecycles.

Key Lifecycle PKI

Encryption Algorithms

Detailed analysis of modern cryptographic algorithms and their implementations

🛡️

AES (Advanced Encryption Standard)

Symmetric

Industry-standard symmetric encryption algorithm supporting 128, 192, and 256-bit keys. Features Rijndael cipher with substitution-permutation network structure.

Key Sizes: 128, 192, 256 bits
Block Size: 128 bits
Rounds: 10, 12, 14
🔑

RSA (Rivest-Shamir-Adleman)

Asymmetric

Widely-used public-key cryptosystem based on the difficulty of factoring large composite numbers. Supports both encryption and digital signatures.

Key Sizes: 1024, 2048, 4096 bits
Security: Integer factorization
Uses: Encryption, Signatures
🌊

Elliptic Curve Cryptography (ECC)

Asymmetric

Modern public-key cryptography based on elliptic curves over finite fields. Provides equivalent security to RSA with smaller key sizes.

Key Sizes: 160, 224, 256, 384, 521 bits
Security: Elliptic curve discrete log
Efficiency: High performance
🔗

SHA-256 (Secure Hash Algorithm)

Hash Function

Cryptographic hash function producing 256-bit hash values. Part of SHA-2 family, widely used in blockchain, digital signatures, and data integrity.

Output Size: 256 bits
Block Size: 512 bits
Rounds: 64

Cybersecurity Practices

Essential security protocols, attack vectors, and defense mechanisms

🛡️

Transport Layer Security (TLS)

Secure communication protocols for internet applications. TLS 1.3 improvements, cipher suites, and certificate management.

Critical
📜

Digital Signatures

Authentication and non-repudiation using RSA, ECDSA, and EdDSA. Certificate authorities and public key infrastructure.

Critical
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Zero-Knowledge Proofs

Privacy-preserving authentication protocols. zk-SNARKs, zk-STARKs, and applications in blockchain and identity verification.

Advanced

Side-Channel Attacks

Timing attacks, power analysis, electromagnetic emanations, and countermeasures for secure hardware implementations.

Advanced
🔄

Perfect Forward Secrecy

Ephemeral key exchange protocols ensuring past communications remain secure even if long-term keys are compromised.

Critical
🎯

Post-Quantum Cryptography

Quantum-resistant algorithms including lattice-based, code-based, and multivariate cryptography for future security.

Emerging

Blockchain Security

Cryptographic foundations and security considerations for distributed ledger technologies

⛓️

Consensus Mechanisms

Proof of Work, Proof of Stake, and Byzantine Fault Tolerance algorithms ensuring network security and agreement in distributed systems.

PoW PoS BFT DPoS
📋

Smart Contract Security

Security vulnerabilities in smart contracts, formal verification methods, and best practices for secure decentralized application development.

Reentrancy Overflow Access Control Formal Verification
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Merkle Trees

Binary tree structures using cryptographic hashes for efficient and secure verification of large data structures in blockchain systems.

Hash Trees Proof of Inclusion Data Integrity Efficient Verification
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Privacy Coins

Advanced cryptographic techniques for transaction privacy including ring signatures, stealth addresses, and zero-knowledge proofs.

Ring Signatures Stealth Addresses Bulletproofs CryptoNote

Learning Resources

Curated tools, references, and educational materials for cryptography mastery

📚 Essential Reading

Applied Cryptography Bruce Schneier
Cryptography Engineering Ferguson, Schneier, Kohno
A Graduate Course in Applied Cryptography Dan Boneh, Victor Shoup
Serious Cryptography Jean-Philippe Aumasson

🛠️ Practical Tools

OpenSSL Cryptographic toolkit
Cryptol Specification language
SageMath Mathematical software
Burp Suite Security testing

🎓 Online Courses

Cryptography I & II Stanford Online
Applied Cryptography University of Maryland
Blockchain Fundamentals UC Berkeley
Cybersecurity Specialization University of Maryland

🔬 Research Papers

IACR ePrint Archive Latest cryptography research
Journal of Cryptology Peer-reviewed publications
ACM CCS Computer & Communications Security
USENIX Security Security symposium papers