Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.
Input Text
Hash Types
Security Notice:
MD5 and SHA-1 are considered cryptographically broken and should not be used for security purposes. Use SHA-256 or SHA-512 for cryptographic applications.
About Hash Functions
What are Hash Functions? Hash functions are mathematical algorithms that convert input data of any size into a fixed-size string of characters. This output, called a hash or digest, uniquely represents the original data.
Hash functions are deterministic (same input always produces same output) and designed to be irreversible, making them essential for security and data integrity applications.
Common Applications:
• File integrity verification: Detect file corruption or tampering
• Password storage: Securely store user passwords in databases
• Digital signatures: Verify authenticity of documents and messages
• Data deduplication: Identify duplicate files efficiently
• Blockchain technology: Secure transaction verification
• Software distribution: Verify download integrity
Hash Algorithm Comparison
MD5 (Message Digest 5):
• 128-bit hash length (32 hexadecimal characters)
• Fast computation but cryptographically broken since 2004
SHA-1 (Secure Hash Algorithm 1):
• 160-bit hash length (40 hexadecimal characters)
• Deprecated by NIST in 2011, vulnerable to collision attacks
SHA-256 (SHA-2 family):
• 256-bit hash length (64 hexadecimal characters)
• Currently secure and widely used in modern applications
SHA-512 (SHA-2 family):
• 512-bit hash length (128 hexadecimal characters)
• Most secure option, slower but maximum security
Example Hash Outputs:
Input: "Hello World"
MD5:
b10a8db164e0754105b7a99be72e3fe5
SHA-1:
0a4d55a8d778e5022fab701977c5d840bbc486d0
SHA-256:
a591a6d40bf420404a011733cfb7b190d62c65bf0bcda32b57b277d9ad9f146e
Security Best Practices:
• Use SHA-256 or SHA-512 for security-critical applications
• Always use salt when hashing passwords
• Consider using specialized password hashing functions (bcrypt, scrypt, Argon2)
• Avoid MD5 and SHA-1 for new security implementations
• Hash functions alone are not encryption - they cannot be "decrypted"
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