A comprehensive guide explaining authentication and authorization mechanisms in blockchain, with specific focus on how Stellar and Soroban implement these security features through digital signatures, multisig, thresholds, and smart contract-based account abstraction.
This educational article breaks down the fundamental difference between authentication (verifying identity) and authorization (controlling access), using a karaoke bar analogy to illustrate the concepts. It explains how Stellar traditionally handles these through signature weights, multisig, and thresholds, then explores how Soroban's smart contract platform extends these capabilities. The article details Soroban's authorization framework, including account abstraction that allows custom contracts to implement flexible authentication logic (WebAuthn, mobile auth, etc.) while remaining compatible with other contracts. It also covers fine-grained transaction construction and Soroban's simulation endpoint for estimating fees and authorization requirements before submission.
