RSA Encryptor & Decryptor – Secure Asymmetric Encryption
Generate RSA key pairs, encrypt with public key, decrypt with private key. Industry-standard PEM format.
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RSA Key Pair Generator
Key Information
Public Key
Share this with others to receive encrypted messages
Private Key
Keep this secret! Used to decrypt messages
Key Size Guide
512-bit
Fast but not recommended
1024-bit
Legacy systems only
2048-bit
Industry standard
4096-bit
Maximum security
Examples of Real-World Usage
Discover how professionals use this tool to solve real problems and boost productivity.
Secure Email Communication
Encrypt sensitive emails so only the recipient with the matching private key can read them. Perfect for confidential business communications.
API & Web Services
Secure API communications by encrypting requests with the server's public key. Commonly used in payment gateways and authentication systems.
Secure Key Exchange
Safely exchange encryption keys over insecure channels. Encrypt AES keys with RSA for secure transmission.
Digital Signatures
Verify the authenticity and integrity of messages. Sign documents with your private key to prove they came from you.
Multi-Party Communications
Share your public key with multiple parties. Each can send you encrypted messages that only you can decrypt.
SSL/TLS Certificates
RSA is the foundation of HTTPS. Generate keys for SSL certificates or understand how web security works.
Powerful RSA Encryption Features
Complete RSA encryption toolkit with key generation, public key encryption, private key decryption, and PEM format support. Perfect for secure messaging, API communication, and understanding cryptography.
Key Pair Generation
Generate RSA public/private key pairs with 512, 1024, 2048, or 4096-bit strength
Public Key Encryption
Encrypt messages using the recipient's public key for secure transmission
Private Key Decryption
Decrypt messages using your private key - only you can read them
Asymmetric Security
Public key for encryption, private key for decryption - no shared secrets
Export & Import Keys
Download keys in PEM format or upload existing keys for encryption/decryption
Quick Copy & Share
One-click copy for encrypted messages and public keys to share
Real-Time Processing
Instant encryption and decryption with visual feedback
PEM Format Support
Industry-standard PEM format for maximum compatibility
How to Use the RSA Encryptor & Decryptor – Asymmetric Encryption Tool
Follow these easy steps to get started with RSA Encryptor & Decryptor – Asymmetric Encryption Tool and achieve your goals quickly.
Generate an RSA key pair (2048-bit recommended) or import existing keys
To encrypt: Enter your message and use the recipient's public key
To decrypt: Paste encrypted message and use your private key
Copy or download the encrypted/decrypted result
Frequently Asked Questions
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