ConceptsDigital Signatures

Digital Signatures

A cryptographic technique that proves a message or file came from a specific signer and was not altered, by signing with a private key that anyone can verify with the matching public key. It provides authenticity, integrity, and non-repudiation.

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Hash Functions

The foundation Digital Signatures builds on, worth understanding first.

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Hash FunctionsStart here

Algorithms that take input of any size and produce a fixed-size, unique-looking output (a hash), designed so the same input always yields the same hash and it is infeasible to reverse or to find two inputs with the same hash.

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Builds towardDigital Signatures is a foundation for these

JWT

JSON Web Token: a compact, self-contained token format that carries claims (such as identity and permissions) in a signed, and optionally encrypted, structure, widely used for authentication and authorization in web and API systems.

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Integrity

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Authenticity

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Non-Repudiation

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Key Pair

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Private Key

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Public Key

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Show 7 more connections

RSA

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ECDSA

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EdDSA

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Certificate

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HMAC

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Intermediate CA

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Message Authentication Code

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Related Lessons

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