🔐 Hash Generator
Description
Algorithm Information
MD5 (Message Digest 5)
MD5: Message Digest Algorithm 5 - Fast but deprecated for security
SHA-1 (Secure Hash Algorithm 1)
SHA-1: Secure Hash Algorithm 1 - 160-bit, legacy use only
SHA-256 (Recommended)
SHA-256: Part of SHA-2 family - Industry standard for security
SHA-512 (High Security)
SHA-512: Maximum security in SHA-2 family - Best for sensitive data
SHA3-256/512 (Modern)
SHA3: Latest NIST standard based on Keccak algorithm - High security for modern applications
Keccak-256 (Ethereum)
Blockchain Hash: Keccak-256 used in Ethereum blockchain system
CRC32 (Checksum)
CRC32: Cyclic Redundancy Check - For data integrity verification
SM3 (Chinese National Standard)
SM3: Chinese national standard - 256-bit cryptographic hash
Security Considerations
⚠️ MD5 and SHA-1 are deprecated for security applications due to collision vulnerabilities
Select Hash Algorithms
Select one or more algorithms to generate multiple hashes simultaneously
Input Data
Input length: 0
Algorithm Details & Implementation Examples
Security Level
Secure
Performance
Good
Output Size
256 bits (64 hex chars)
Description
SHA-256 is part of the SHA-2 family and produces a 256-bit hash value. It's currently the industry standard for cryptographic hashing, widely used in blockchain, digital certificates, and secure communications.
Use Cases & Applications
Password Storage
Digital Signatures
Blockchain Technology
SSL/TLS Certificates
Implementation Examples
// Node.js SHA-256 Implementation (Recommended)
const crypto = require('crypto');
function calculateSHA256(text) {
const hash = crypto.createHash('sha256');
hash.update(text, 'utf8');
return hash.digest('hex');
}
// Usage example
const text = "Hello World";
const result = calculateSHA256(text);
console.log(`SHA-256: ${result}`);
// Alternative: One-liner for simple cases
const quickHash = crypto.createHash('sha256')
.update(text, 'utf8')
.digest('hex');関連JSONツール
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Symmetric Encryption Tool
Encrypt and decrypt data using symmetric encryption algorithms like AES, SM4, and ChaCha20
Asymmetric Encryption Tool
Generate key pairs, encrypt/decrypt data, and create digital signatures using RSA, ECC, SM2, and other public-key cryptography algorithms
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