Encryption & Cipher Guides

Understand AES, DES, RSA, ECC, format-preserving encryption, modes of operation, padding, and implementation choices.
Encryption

DES & 3DES: The Legacy Encryption Standard in Payments

Understand DES and 3DES encryption — how they work, why DES is broken, and why 3DES remains deeply embedded in payment infrastructure.
9 min read
Encryption

AES Encryption Explained: Modes, Padding & Best Practices

A complete guide to AES encryption — key sizes, ECB/CBC/CTR/GCM modes, padding, IV best practices, and common mistakes to avoid.
10 min read
Encryption

RSA Encryption Guide: Keys, Padding & When to Use It

Everything you need to know about RSA — key sizes, OAEP vs PKCS#1 padding, hybrid encryption, and when to choose RSA vs ECC.
9 min read
Encryption

ECC & ECDSA: Elliptic Curve Cryptography Explained

Learn how Elliptic Curve Cryptography works — ECDSA signatures, ECDH key agreement, curve selection, and why ECC beats RSA for modern systems.
10 min read
Encryption

Format-Preserving Encryption (FPE): FF1, FF3-1 & Tokenization

Learn how Format-Preserving Encryption works — FF1 and FF3-1 algorithms, tokenization of credit cards, PCI DSS compliance, and when to use FPE vs traditional encryption.
9 min read
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