Cryptography Blockchain & Coins

Learn what Falcon is, how this post-quantum signature scheme works, where it fits, and its pros, limits, and security considerations.

Learn what the Rainbow signature scheme is, how it works, why it mattered in post-quantum cryptography, and why it is not preferred today.

Learn what SIDH is, how it works, why it mattered in post-quantum cryptography, and why it is not recommended for new systems.

Learn what lattice-based cryptography is, how it works, why it matters for post-quantum security, and where it fits in modern systems.

Understand homomorphic encryption, how it works, its types, use cases, limitations, and how it differs from AES, RSA, and SHA-256.

Learn what zero-knowledge proofs are, how they work, where they’re used in crypto, and how they differ from encryption, hashing, and signatures.

Learn what Tor encryption is, how onion routing works, and where Tor helps or falls short for privacy and crypto use.

Learn how TLS 1.3 handshake encryption works, which algorithms it uses, and why it matters for APIs, wallets, exchanges, and apps.

Learn what PKCS#12 is, how .p12/.pfx files work, what they store, and how to use them securely in enterprise and crypto systems.

Learn what PKCS#7 is, how PKCS#7 padding works, where it’s used, and the security risks developers and security teams should know.

Understand PKCS#5, PBKDF2, and PKCS5 padding, with practical guidance on AES, wallet security, and modern alternatives.

Understand PKCS#1, RSA padding, OAEP, and PSS. Learn where it fits in modern cryptography, PKI, and crypto infrastructure.

Learn what OFB is, how Output Feedback mode works, where it fits, and why modern systems often prefer authenticated encryption.

Learn what CFB is, how it works, where it fits, and when AES-CFB is useful versus newer authenticated encryption modes.

Learn what ECB mode is, how AES-ECB works, why it leaks patterns, and when to use safer options like AES-GCM or ChaCha20-Poly1305.

Learn what CBC is, how Cipher Block Chaining works, where AES-CBC is used, and why IVs, padding, and authentication matter.

Learn what GCM is, how AES-GCM works, why nonce reuse is dangerous, and where GCM fits among HMAC, SHA-256, and ChaCha20-Poly1305.

Learn what CMAC is, how AES-CMAC works, when to use it, and how it compares with HMAC, GMAC, and Poly1305.

Learn what Blake3 is, how it works, and when to use it instead of SHA-256 or SHA-3 in modern cryptography and blockchain systems.

Learn what Blake2 is, how it works, where it fits in cryptography, and when to choose it over SHA-256, SHA-3, HMAC, or Argon2.

1. SHA-1 Explained: How It Works, Why It Was Deprecated, and What to Use Instead 2. SHA-1: Definition, Security Risks, Legacy Uses, and Modern Alternatives 3. What Is SHA-1? A Clear Guide to Its Design, Weaknesses, and Replacements

Learn what X25519 is, how it works, where it’s used, and how it compares with RSA, Diffie-Hellman, and Ed25519.

Learn what ECDSA is, how it signs data, where it is used in crypto, and the main security risks, limitations, and best practices.

Learn what Ed25519 is, how it works, where it’s used, and how it compares with ECDSA, RSA, X25519, AES, and SHA-256.

Learn what Scrypt is, how it works, where it’s used in crypto and password hashing, and how it compares with Argon2, Bcrypt, and PBKDF2.

Learn what PBKDF2 is, how it works, where it fits in cryptography, and when to use Argon2, Scrypt, or Bcrypt instead.

Learn what Argon2 is, how it works, and why it matters for password hashing, wallet security, and key derivation.

Learn how Bcrypt works, where it fits in cryptography, and when to choose it over Argon2, PBKDF2, Scrypt, or SHA-256.

Learn what Whirlpool is, how this 512-bit hash function works, where it fits in cryptography, and when SHA-256 or SHA-3 may be better.

Learn what RC6 is, how this block cipher works, how it compares with AES and RC5, and when it matters in modern security.