Does Ed25519 support key recovery from signatures?

No, Ed25519 does not support public key recovery from signatures. You must provide the public key separately to verify a signature.

What makes Ed25519 better than RSA or ECDSA?

Ed25519 offers significantly faster signing and verification, smaller key sizes (32 bytes), and deterministic signatures, meaning it doesn't require a random number generator during signing, which removes a common point of failure.

Can I use this skill for code signing?

Absolutely. This skill includes specific guidance and implementation patterns for building secure code signing systems using the Ed25519 algorithm.

Is Ed25519 resistant to side-channel attacks?

Yes, Ed25519 is specifically designed for constant-time execution, which provides robust protection against side-channel attacks that exploit variations in power consumption or timing.

Which NIST CSF controls does this skill support?

This skill is mapped to NIST Cybersecurity Framework 2.0 controls including PR.DS-01 (Data Integrity), PR.DS-02 (Data Authenticity), and PR.DS-10 (Cryptographic Key Management).

Ed25519 Digital Signature Implementation

Name: Ed25519 Digital Signature Implementation
Author: mukul975

bymukul975

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4,121

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セキュリティとテスト

Implements high-performance, deterministic digital signatures using the Ed25519 algorithm for secure document and code signing.

This skill enables Claude to implement the Ed25519 digital signature algorithm, a modern cryptographic standard based on the Edwards curve Curve25519. It provides 128-bit security with high-speed performance and resistance to side-channel attacks, making it ideal for document signing, API authentication, and building secure code signing systems. By leveraging this skill, developers can ensure data integrity and authenticity while benefiting from smaller key sizes and deterministic signatures that eliminate the need for a random nonce during the signing process.

主な機能

01Support for multi-signature verification patterns

02Deterministic message signing and signature verification

03Performance benchmarking against RSA and ECDSA

04Secure Ed25519 key pair generation (32-byte public/private keys)

05Side-channel resistant implementation guidance

064,121 GitHub stars

ユースケース

01Securing API requests with fast, small-footprint digital signatures

02Implementing document integrity verification for sensitive data transfers

03Building a lightweight code signing system for software distribution

主な機能

01Support for multi-signature verification patterns

02Deterministic message signing and signature verification

03Performance benchmarking against RSA and ECDSA

04Secure Ed25519 key pair generation (32-byte public/private keys)

05Side-channel resistant implementation guidance

064,121 GitHub stars

ユースケース

01Securing API requests with fast, small-footprint digital signatures

02Implementing document integrity verification for sensitive data transfers

03Building a lightweight code signing system for software distribution