एसएचए-256 हैश जनरेटर
सुरक्षित 256-बिट एसएचए-256 क्रिप्टोग्राफिक हैश ऑनलाइन उत्पन्न करें। नि:शुल्क और निजी।
Key Capabilities
Supports text and file hashing
Hash any text string or upload a file of any type to generate its SHA-256 digest. Uses the browser native Web Crypto API.
Hash comparison for file integrity verification
Paste a known SHA-256 hash alongside your file for an instant match or mismatch result.
HMAC-SHA256 for API request signing
Generate an HMAC-SHA256 digest by providing both the message and a secret key.
How to Use
Enter text or upload a file
Type or paste text, or click Hash file and select a file.
Generate the hash
The SHA-256 hash appears automatically. For HMAC, switch to the HMAC tab.
Compare against a known hash
Paste the expected hash into the comparison field. The tool displays Match or Mismatch.
Common Use Cases
- Sysadmins verifying downloaded softwareA system administrator can hash a downloaded file and compare it against the published SHA-256 checksum.
- Developers debugging AWS API signaturesA developer can independently calculate the expected signature at each step of the AWS signing process.
- Security teams generating integrity baselinesA security engineer can generate SHA-256 hashes for critical system files to store as a baseline.
Frequently Asked Questions
What is SHA-256 hashing?
SHA-256 is a member of the SHA-2 family that produces a 256-bit (64-character hexadecimal) hash. It's the current industry standard for digital signatures, SSL certificates, Bitcoin mining, and file integrity verification. No collisions have ever been found.
Who uses this tool professionally?
DevOps engineers generate SHA-256 checksums for container image verification. Security teams compute file hashes for malware analysis and incident response. Blockchain developers verify transaction hashes and block integrity using SHA-256.
Is SHA-256 quantum-resistant?
SHA-256 is considered resistant to known quantum attacks due to Grover's algorithm only reducing the effective security to 128-bit, which remains secure. For post-quantum readiness, SHA-256 is recommended by NIST as the minimum standard.
Is my data kept private?
Yes. Hash generation runs locally using the Web Crypto API. Sensitive input data is never sent to any server.
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