Ed25519 is a high-performance digital signature algorithm using the Edwards curve Curve25519. It provides 128-bit security with 64-byte signatures and 32-byte keys, offering significant advantages ove
Automate repetitive workflows and reduce manual effort
Example: Generate reports, summarize documents, draft communications
Save 3-5 hours per week on routine tasks
Learn new skills, understand complex topics, get expert guidance
Example: Explain concepts, provide examples, suggest learning resources
Accelerate learning and skill development by 2x
Enhance output quality through reviews, suggestions, and refinements
Example: Review drafts, suggest improvements, catch errors
Improve work quality by 30-40% with less effort
Time estimate: 15-45 minutes depending on use case complexity
Prerequisites
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epx add mukul975/Anthropic-Cybersecurity-Skills/implementing-digital-signatures-with-ed25519Compatible with
Supported agents
| name | implementing-digital-signatures-with-ed25519 |
| description | Ed25519 is a high-performance digital signature algorithm using the Edwards curve Curve25519. It provides 128-bit security with 64-byte signatures and 32-byte keys, offering significant advantages ove |
| domain | cybersecurity |
| subdomain | cryptography |
| tags | - cryptography - digital-signatures - ed25519 - authentication - integrity |
| version | '1.0' |
| author | mahipal |
| license | Apache-2.0 |
| nist_csf | - PR.DS-01 - PR.DS-02 - PR.DS-10 |
Ed25519 is a high-performance digital signature algorithm using the Edwards curve Curve25519. It provides 128-bit security with 64-byte signatures and 32-byte keys, offering significant advantages over RSA and ECDSA including deterministic signatures (no random nonce needed), resistance to side-channel attacks, and fast verification. This skill covers implementing Ed25519 for document signing, code signing, and API authentication.
| Property | Ed25519 | RSA-3072 | ECDSA P-256 |
|---|---|---|---|
| Security | 128-bit | 128-bit | 128-bit |
| Public key size | 32 bytes | 384 bytes | 64 bytes |
| Signature size | 64 bytes | 384 bytes | 64 bytes |
| Key generation | ~50 us | ~100 ms | ~1 ms |
| Sign | ~70 us | ~5 ms | ~200 us |
| Verify | ~200 us | ~200 us | ~500 us |
| Deterministic | Yes | No (PSS) | No (unless RFC 6979) |
AI-first code editor with Composer
Before installing skills in Cursor, ensure your development environment meets these requirements:
node --versionimplementing-digital-signatures-with-ed25519Execute the skills CLI command in your project's root directory to begin installation:
epx add mukul975/Anthropic-Cybersecurity-Skills/implementing-digital-signatures-with-ed25519Fetches implementing-digital-signatures-with-ed25519 from mukul975/Anthropic-Cybersecurity-Skills and configures it for Cursor.
The CLI shows a list of agents. Use arrow keys and space to select Cursor:
Confirm successful installation by checking the skill directory location:
.cursor/skills/implementing-digital-signatures-with-ed25519
Restart Cursor to activate implementing-digital-signatures-with-ed25519. Access via /implementing-digital-signatures-with-ed25519in your agent's command palette.
Learn more:View source on GitHubSkills CLI docsAbout CursorWhat are agent skills?
Steps
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✓ Use when
Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.
✗ Avoid when
Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.
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Registry listing for implementing-digital-signatures-with-ed25519 matched our evaluation — installs cleanly and behaves as described in the markdown.
Solid pick for teams standardizing on skills: implementing-digital-signatures-with-ed25519 is focused, and the summary matches what you get after install.
implementing-digital-signatures-with-ed25519 reduced setup friction for our internal harness; good balance of opinion and flexibility.
I recommend implementing-digital-signatures-with-ed25519 for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
Useful defaults in implementing-digital-signatures-with-ed25519 — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
implementing-digital-signatures-with-ed25519 is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
Registry listing for implementing-digital-signatures-with-ed25519 matched our evaluation — installs cleanly and behaves as described in the markdown.
Useful defaults in implementing-digital-signatures-with-ed25519 — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.
I recommend implementing-digital-signatures-with-ed25519 for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
implementing-digital-signatures-with-ed25519 reduced setup friction for our internal harness; good balance of opinion and flexibility.
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