RSA Key Pair Generator

What is an RSA Key Pair Generator?

An RSA key pair generator creates RSA (Rivest-Shamir-Adleman) public and private key pairs for encryption, decryption, and digital signatures. RSA is a widely-used public-key cryptosystem. Key pairs consist of a public key (shared) and a private key (kept secret). RSA keys are used for SSL/TLS certificates, SSH authentication, and secure communications.

Why Generate RSA Key Pairs?

RSA key pair generation is essential for security:

• SSL/TLS Certificates: Generate keys for HTTPS certificates
• SSH Authentication: Create SSH key pairs for secure server access
• Encryption: Set up encryption systems for secure data transmission
• Digital Signatures: Generate keys for signing and verifying documents
• Secure Communication: Create secure communication channels

Common Use Cases

SSH Key Generation

Generate SSH key pairs for secure server authentication. Create public/private key pairs for passwordless SSH access.

SSL/TLS Certificates

Create RSA keys for SSL/TLS certificates. Generate key pairs for HTTPS websites and secure connections.

Encryption Setup

Set up encryption systems with RSA keys. Use RSA for encrypting and decrypting data securely.

Digital Signatures

Generate keys for digital signatures. Create key pairs for signing and verifying documents or messages.

Secure Communication

Create secure communication channels with RSA encryption. Use RSA keys for secure data transmission.

RSA Key Sizes

Common RSA key sizes:

• 1024 bits: Legacy, not recommended for new applications
• 2048 bits: Standard, widely used, recommended minimum
• 4096 bits: High security, recommended for sensitive applications
• 8192 bits: Maximum security, for highly sensitive applications

Key Pair Generation Process

Our generator:

1. Key Size Selection: Choose RSA key size (1024-8192 bits)
2. Key Generation: Generates public and private key pair
3. Format Conversion: Converts to PEM format
4. Output: Displays both public and private keys
5. Export: Provides download and copy options

RSA Key Formats

Our generator supports:

• PEM Format: Base64-encoded keys with headers/footers
• PKCS#1: Traditional RSA key format
• PKCS#8: Modern key format with better compatibility

RSA Key Pair Best Practices

• Key Size: Use at least 2048 bits for new applications
• Private Key Security: Never share private keys
• Public Key Sharing: Public keys can be shared freely
• Key Storage: Store private keys securely
• Backup Keys: Keep secure backups of key pairs

Security Considerations

⚠️ Critical Security Notes:

• Private Key Protection: Private keys must be kept secret
• Never Share Private Keys: Sharing private keys compromises security
• Secure Storage: Store private keys in secure locations
• Key Rotation: Rotate keys periodically for security
• Use Cases: Use appropriate key sizes for your security needs

Privacy and Security

Our RSA Key Pair Generator uses cryptographically secure random number generation. All key generation happens in your browser—no keys are sent to our servers, ensuring complete privacy and security.

Related Tools

If you need other security or developer tools, check out:

• Hash Generator: Generate cryptographic hashes
• Password Generator: Generate secure passwords
• UUID Generator: Generate unique identifiers