Web Crypto ECDH25519 Demo

1) Generate keys

X25519 private key
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X25519 public key
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Ed25519 private key
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Ed25519 public key
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2) Encrypt and sign

Message
Hello asymmetric encryption copy

Sign with Ed25519 private key

Signature (Ed25519)
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Encrypt with X25519 public key

Encrypted payload
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3) Verify and decrypt

Verify signature

Verified echo
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Decrypt

Decrypted message
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