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Dokumentation Kernwerkzeuge

RSA Asymmetric Encryption Tool

Overview

The RSA Asymmetric Encryption Tool provides comprehensive RSA cryptographic operations including encryption, decryption, digital signing, and signature verification. RSA is one of the most widely used public-key cryptosystems, offering strong security for data protection and authentication.

Features

  • Multiple Operations: Support for encryption, decryption, digital signing, and signature verification
  • Key Management: Generate secure RSA key pairs with various key sizes (1024, 2048, 4096 bits)
  • Key Formats: Support for both PEM and JWK key formats
  • Flexible Key Sizes: Choose from RSA-1024, RSA-2048 (recommended), and RSA-4096
  • Multiple Hash Algorithms: Support for SHA-256, SHA-384, and SHA-512
  • Output Formats: Choose between Base64 and hexadecimal output encoding
  • Real-time Processing: Instant cryptographic operations with performance metrics
  • History Tracking: Keep track of recent RSA operations

Supported Operations

Encryption/Decryption

  • Public Key Encryption: Encrypt data using the recipient's public key
  • Private Key Decryption: Decrypt data using your private key
  • Secure Data Transfer: Ideal for secure communication and data protection

Digital Signatures

  • Private Key Signing: Create digital signatures using your private key
  • Public Key Verification: Verify signatures using the sender's public key
  • Data Integrity: Ensure message authenticity and non-repudiation

Security Features

Key Sizes

  • RSA-1024: Basic security level (not recommended for sensitive data)
  • RSA-2048: Current industry standard, balanced security and performance
  • RSA-4096: Maximum security level for highly sensitive applications

Cryptographic Standards

  • RSASSA-PKCS1-v1_5: Standard RSA signature scheme
  • RSA-OAEP: Optimal Asymmetric Encryption Padding for encryption
  • Multiple Hash Functions: SHA-256, SHA-384, SHA-512 support

Use Cases

  • Secure Communication: Encrypt messages for secure transmission
  • Digital Certificates: Create and verify digital certificates
  • Code Signing: Sign software and documents for authenticity
  • Key Exchange: Securely exchange symmetric encryption keys
  • Authentication: Verify identity through digital signatures
  • Data Integrity: Ensure data hasn't been tampered with

Best Practices

  • Use RSA-2048 or higher for new applications
  • Keep private keys absolutely secure and never share them
  • Public keys can be freely distributed
  • For large data encryption, use hybrid encryption (RSA + AES)
  • Regularly rotate key pairs for enhanced security
  • Use appropriate padding schemes (OAEP for encryption, PSS for signatures)

Technical Specifications

  • Algorithm: RSA (Rivest-Shamir-Adleman)
  • Key Sizes: 1024, 2048, 4096 bits
  • Padding: RSASSA-PKCS1-v1_5, RSA-PSS
  • Hash Algorithms: SHA-256, SHA-384, SHA-512
  • Key Formats: PEM, JWK (JSON Web Key)
  • Output Encoding: Base64, Hexadecimal

The tool provides a user-friendly interface for both beginners and cryptography experts, with built-in security recommendations and best practices guidance.

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