38 articles tagged Cryptography.
For years, identity protocols have used phrases such as Holder of Key, Proof of Possession, Key Binding, and Bearer almost interchangeably.
Read article: Holder of Key vs. Proof of Possession: Two Sides of Cryptographic IdentityA Cryptographic Bill of Materials (CBOM) is exactly what it sounds like: an inventory of every cryptographic component used throughout an organization. If a Software Bill of Materials (SBOM) tells you what software you have, a CBOM tells you how that software is protected.
Read article: Cryptographic Bill of Materials: The CBOM To The Industry’s SBOMIf you’ve ever read a specification like WebAuthn, DID Core, SD-JWT VC, BBS Signatures, OID4VCI, or OID4VP, you’ve probably encountered references to P-256, secp256k1, Ed25519, or BLS12–381.
Read article: Elliptic Curve Groups: The Mathematical Engine Behind Modern Digital IdentityModern technology runs on mathematics that most people never see.
Read article: Finite Fields: The Mathematics Behind Cryptography, Error Correction, and Digital TrustThere is a recurring problem in the Verifiable Credentials world.
Read article: SD-JWT VC vs. BBS-2023: Why These Aren’t Really the Things You’re ComparingIf you’ve spent any time reading about modern cryptography — especially BBS Signatures, attribute-based credentials, or identity-based encryption — you’ve probably encountered the phrase bilinear pairing.
Read article: Bilinear Pairings: Modern Privacy-Preserving CryptographyIf you’ve spent any time reading about modern cryptography, you’ve probably encountered the phrase Elliptic Curve Cryptography (ECC). It sounds less like a security technology and more like an elective mathematics course that everyone regrets taking — I’ve been in several of those.
Read article: Elliptic Curve Cryptography: The Tiny Keys That Protect the InternetSelective Disclosure is fundamentally a mathematical concept. The protocols (SD-JWT VC, BBS-2023, AnonCreds, Idemix, U-Prove, etc.) are really just engineering built on top of several branches of mathematics.
Read article: Selective Disclosure: The MathThis post seemed like a missing link in my Post-Quantum Cryptography series. Note, this is for non-technical people, non-physicist, or maybe IT community.
Read article: Quantum Mechanics Explained: The Universe’s Passive-Aggressive User Manual
