Generate SHA-1 hashes for data integrity checks, digital signatures, and legacy applications. Not recommended for secure password storage.
Supported Tools:
Free online tool to create and verify SHA1 hashes from text or files directly in your browser. No installation required.
SHA1 (Secure Hash Algorithm 1) is a cryptographic hash function producing a 160-bit (20-byte) hash, represented as a 40-character hexadecimal string. Designed by the NSA in 1995, SHA1 was widely used for digital signatures, file integrity checks, and password hashing. While now considered weak against collisions, it remains useful for legacy systems and educational purposes.
Input:
keydecryptor
Output:
ddcb14113e516e81e86fff2c172ce53dba1143f8
Can I generate SHA1 hashes for free?
Yes. This online tool allows you to create SHA1 hashes from text or files instantly in your browser.
What is the length of a SHA1 hash?
SHA1 produces a 160-bit (20-byte) hash, represented as a 40-character hexadecimal string.
Can I hash a file?
Yes. Upload a file, and the tool will compute its SHA1 hash.
SHA1 vs MD5: which is stronger?
SHA1 is stronger than MD5 because it produces a longer 160-bit hash. However, both are vulnerable to collisions and not recommended for modern cryptography.
Can SHA1 hashes be reversed?
No. SHA1 is one-way. Some online databases may help with known hashes.
What is a SHA1 collision?
A collision occurs when two different inputs produce the same hash. Advanced techniques can generate collisions, making SHA1 insecure for sensitive data.
Example of SHA1 hash?
The SHA1 hash of 'keydecryptor' is 'ddcb14113e516e81e86fff2c172ce53dba1143f8'. It demonstrates the fixed 40-character output.
What is SHA1 used for?
SHA1 was widely used for digital signatures, certificate verification, file integrity, and password hashing in older systems. It is still useful for learning and legacy purposes.