Crypto
Protect Wallet Address Fields in Crypto from Clipboard
In crypto, wallet address is one of the most targeted data types. Standard HTML inputs expose it to clipboard hijack attacks. SmartField encrypts it at the keystroke level.
The Risk
Wallet Address entered in a standard form is immediately accessible:
// Clipboard attack:
document.querySelector('input').value
// "Wallet Address data here" ← stolen
The Fix
<smart-field type="password" encrypt-key="/api/sf-key"
placeholder="wallet address"></smart-field>
Now the same attack returns AES-256-GCM encrypted data. The wallet address never exists as plaintext in the browser.
What the Attacker Gets
document.querySelector('smart-field').value
// "eyJ2IjoxLCJpdiI6IkNxT3..." ← 600+ chars of encrypted gibberish
Useless without your server's RSA-2048 private key.
Compliance
SmartField uses NIST-approved algorithms: AES-256-GCM (SP 800-38D) and RSA-2048 (SP 800-56B). Compatible with PCI-DSS, HIPAA, GDPR, SOX, and FISMA requirements.
Frequently Asked Questions
How does SmartField protect wallet address in crypto?+
SmartField encrypts wallet address at the keystroke level using AES-256-GCM. The data never exists as plaintext in the browser DOM. Clipboard Protection is achieved through 13 independent security layers including closed Shadow DOM and WeakMap isolation.
Can clipboard hijack attacks steal wallet address?+
Not with SmartField. The .value property returns encrypted payloads only. The real wallet address is stored in a WeakMap inside a closed Shadow DOM, invisible to any JavaScript including clipboard hijack attacks.
How do I implement this?+
Replace your standard input with smart-field. 2 lines of HTML. Install the server SDK (Node.js, Python, Java, Go, PHP, or Ruby) to decrypt on your backend.
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