Privacy & Security Tools

A complete suite of zero-knowledge cryptographic utilities. Generate keys, encrypt payloads, and analyze security parameters locally in your browser. Your data never leaves your device.

Encryption & Cryptography

Text Encrypt & Decrypt

Securely encrypt plain text or decrypt AES ciphertexts back to readable format using a secret password.

Advanced AES Cryptography

Developer-grade Advanced Encryption Standard (AES) tool with custom block cipher modes (CBC, ECB, CTR).

RSA Key Generator

Generate Asymmetric RSA key pairs natively. Encrypt data with Public Keys and decrypt securely with Private Keys.

PGP Key Generator

Generate secure OpenPGP Public and Private key pairs using RSA-4096 or ECC locally in your browser.

Hashing & Authentication

Hash Generator

Compute secure cryptographic checksums and message digests (MD5, SHA-256, SHA-512) instantly.

Bcrypt Hash Verifier

Compute secure, salted Bcrypt cryptographic password hashes or validate hash match configurations.

HMAC Generator

Compute Hash-based Message Authentication Codes (HMAC) to verify data integrity and API authenticity.

CSRF Token Generator

Create cryptographically secure Anti-CSRF tokens for your web forms and APIs instantly.

Privacy & Network Security

One-Time Secret Sharing

Share passwords and API keys securely. End-to-end encrypted, self-destructing links that burn after reading.

Password Strength Analyzer

Evaluate password complexity, estimate crack times, and identify vulnerabilities locally in your browser.

Random String Generator

Generate cryptographically secure random strings, passwords, and API keys avoiding similar characters.

File Hash & Virus Scan

Check files for malware without uploading them. Generate secure hashes locally and scan against 70+ engines.

Security Headers Analyzer

Scan your website's HTTP response headers to identify missing security policies and misconfigurations.

Commitment to Zero-Knowledge Architecture

In an era of frequent data breaches, uploading sensitive information to third-party web tools is a massive security risk. The OnlinePaste Privacy Suite is built on a strict "Zero-Knowledge" philosophy. Most of the cryptographic tools provided here—including the RSA generator, AES encryption, Hash generators, and password analyzers—utilize your browser's native Web Crypto API or verified client-side libraries.

This means your plain-text payloads, secret passwords, and files are processed entirely within your device's local memory. We do not have the technical capability to intercept, read, or store your unencrypted data, ensuring absolute confidentiality for developers, sysadmins, and everyday users.

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