RSA Encryptor/Decryptor
RSA Encryption Tool
RSA Algorithm Quick Reference
| Key Size | Security Level | Recommended Use | Performance Impact |
|---|---|---|---|
| 1024 bits | Basic | Non-sensitive data, testing | Fastest |
| 2048 bits | Standard | Most applications, general use | Good balance |
| 3072 bits | High | Sensitive data, longer-term security | Slower |
| 4096 bits | Maximum | Highly sensitive data, long-term security | Slowest |
Best Practices
- For General Use: 2048-bit keys provide good security with reasonable performance.
- For Maximum Security: Use 4096-bit keys when securing highly sensitive information.
- Padding Scheme: OAEP is more secure than PKCS#1 v1.5 for encryption operations.
- Large Files: For large files, use hybrid encryption (AES + RSA) instead of RSA-only.
About RSA Encryptor
An RSA Encryptor is a cryptographic tool that enables secure encryption of messages and data using the RSA (Rivest-Shamir-Adleman) algorithm. RSA is a widely used asymmetric encryption method that relies on a pair of public and private keys to ensure confidentiality, integrity, and authenticity of information.
Cybersecurity professionals, developers, and IT administrators use RSA encryption for secure communications, data protection, and digital signatures. The RSA algorithm is fundamental in secure web browsing (SSL/TLS), email encryption, and secure authentication systems.
Core Capabilities
- Public-Key Encryption: Encrypts messages using a public key, which can only be decrypted with the corresponding private key.
- Key Generation: Creates secure RSA key pairs (public and private keys) for encryption and decryption.
- Message and File Encryption: Supports encrypting both text messages and binary files.
- Cross-Platform Compatibility: Works with different operating systems and encryption libraries.
- Secure Key Lengths: Supports RSA key sizes from 1024-bit to 4096-bit for varying security needs.
Common Use Cases
Securely Encrypting Messages
RSA encryption ensures that only the intended recipient can read a message by using their private key to decrypt it.
Encrypted Output: 3a1f9b8... (ciphertext)
Protecting Sensitive Data
RSA is used to encrypt confidential files and documents before transferring them over networks.
confidential.pdf
Output File: confidential.pdf.enc
Implementing Digital Signatures
RSA is used to generate digital signatures, ensuring the authenticity and integrity of messages.
Generated Signature: 7e2d3a9... (encrypted hash)
Encrypting API Keys and Passwords
Developers use RSA encryption to protect API keys, credentials, and passwords stored in databases.
Encrypted API Key: b21f4d9... (ciphertext)
Troubleshooting & Best Practices
Use Strong Key Sizes
RSA-2048 or higher is recommended for strong security.
Keep Private Keys Secure
Store private keys in a secure location, such as a hardware security module (HSM).
Avoid Encrypting Large Files Directly
RSA is best used for encrypting small messages; for large files, use hybrid encryption (e.g., AES + RSA).
Verify Keys Before Encryption
Ensure the public key used for encryption matches the intended recipient.
How to Use the RSA Encryptor
- Generate an RSA Key Pair: Create a secure public and private key pair.
- Encrypt Data with the Public Key: Use the recipient's public key to encrypt messages or files.
- Transmit the Encrypted Data: Send the encrypted text or file securely over the network.
- Decrypt with the Private Key: The recipient uses their private key to decrypt the message.
Specifications
- Supported Key Sizes: 1024-bit, 2048-bit, 3072-bit, 4096-bit.
- Encryption Modes: RSA-OAEP, RSA-PKCS#1 v1.5.
- Supported Input Types: Text, files, binary data.
- Output Format: Base64 or hexadecimal-encoded ciphertext.
- System Compatibility: Works on Windows, macOS, Linux, iOS, and Android.
- Browser Requirements: Compatible with Chrome, Firefox, Safari, and Edge.