Ed25519 Online Tool - Sign, Verify, and Generate
This tool may be used offline and does not transmit keys. Key generation is done locally in browser.
Algorithm
Ed25519
Ed25519ph
Msg Encoding
Text (UTF-8)
Hex
base64
✉️ Message
Key Encoding
Hex
base64
🌱 Seed (Private Key)
🎲🔑 Generate Random Key
🔑 Public Key
⚙️ Public Key from Seed
✍️ Signature
🔏 Sign
✅ Verify
🚫 Clear all
Valid:
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Meta
Seed || Public
🔗 Share
https://dev.cyphr.me/ed25519_tool/ed.html#?alg_type=Msg&msg_enc=Text&key_enc=Hex&verify
Source code on Github
Live Demo (this page)
Simple Coze Verifier
Convert
Hex to base64
or
base64 to Hex
Javascript TweetNaCL tool
Noble Ed25519 tool.
Implemented with noble/ed25519.
Mozilla blog, "How do Ed25519 keys work?"
Sponsored by Cyphr.me