#Digital Signature
2 articles
Application
2026-06-25
Cryptography Fundamentals: Symmetric, Asymmetric, One-Way Functions, Hashing, and Digital Signatures
From symmetric versus asymmetric encryption to the one-way and trapdoor functions behind RSA and ECC, plus hash functions and digital signatures, this article explains the building blocks of cryptography with primary sources. Part 1 of a three-part series that groups public-key uses into signing, encryption, and key exchange.
#Encryption#Public Key Cryptography#Digital Signature#Hashing#RSA#Security
Application
2026-06-25
Three Uses of a Public Key: Signing, Encryption, and Key Exchange
A public key has just three uses: signing, encryption, and key exchange. This article sorts real-world applications such as SSH public-key auth, WebAuthn, mTLS, private_key_jwt, code signing, and container signing into these three, and clarifies how they differ from shared-key schemes such as HMAC, with primary sources.
#Public Key Cryptography#Digital Signature#Authentication#Security#JWT#WebAuthn#OAuth#PKI