Loading, please wait...
🔐
SHA1 Encrypt/Decrypt
Encrypt and decrypt text using SHA1-based encryption with customizable keys and advanced security features
sha1encryptdecryptencryptionsecurityaeskey
SHA1 Encrypt/Decrypt
Encrypt and decrypt text using SHA1-based encryption with AES-256
Encrypt Text
🔐 About SHA1 Encryption
• Uses SHA1-based key derivation with PBKDF2 (100,000 iterations)
• Implements AES-256 encryption in CBC mode
• Generates random salt and IV for each encryption
• All processing happens locally in your browser
• No data is sent to any server
• Keep your encryption key safe - it's required for decryption
About SHA1 Encrypt/Decrypt
The SHA1 Encrypt/Decrypt tool provides secure text encryption using SHA1-based key derivation and AES encryption. Perfect for protecting sensitive information, creating secure messages, and implementing cryptographic solutions. Features custom key generation, multiple encryption modes, and secure decryption capabilities.
✨ Key Benefits
- Encrypt sensitive text with SHA1-based security
- Generate secure encryption keys from passphrases
- Support for multiple encryption algorithms
- Secure decryption with proper key validation
- Copy encrypted/decrypted results to clipboard
- Real-time encryption and decryption
- Advanced security features and options
- No data stored on servers - client-side only
🚀 Features
- SHA1-based key derivation function
- AES-256 encryption with CBC mode
- Custom passphrase support
- Secure random salt generation
- Base64 encoded output
- Input validation and error handling
- Clipboard copy functionality
- Clear all data option
- Real-time processing
- Mobile-responsive interface
💡 Use Cases
- Encrypting sensitive personal information
- Protecting confidential business data
- Creating secure password storage
- Implementing secure communication protocols
- Encrypting files and documents
- Securing API keys and tokens
- Educational cryptography demonstrations
- Building secure applications
🎯 Fun Facts
- SHA1 produces a 160-bit hash, making it faster than SHA256
- AES-256 is used by governments for classified information
- The tool uses PBKDF2 for secure key derivation
- Encryption happens entirely in your browser
- Salt prevents rainbow table attacks
- CBC mode provides semantic security
📚 Historical Context
- SHA1 was developed by the NSA and published in 1993
- AES was selected as the encryption standard in 2001
- PBKDF2 was designed to slow down brute force attacks
- SHA1 was widely used before SHA256 became standard
- AES replaced DES as the encryption standard
- Modern browsers support Web Crypto API for secure encryption