Free online SHA1 hash generator tool for developers. Generate SHA1 hash from text with this secure developer tool. Perfect for checksum verification.
Frequently Asked Questions
What is SHA-1?
SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function that produces a 160-bit (40 character) hash value. It was designed by the NSA and published in 1995.
Is SHA-1 still secure?
No, SHA-1 is considered deprecated due to known vulnerabilities to collision attacks. It is no longer recommended for security-sensitive applications. Use SHA-256 instead.
Why is SHA-1 still used?
SHA-1 is still found in legacy systems, older certificates, and some version control systems like Git for commit hashing. However, migration to more secure algorithms is recommended.
What is the difference between SHA-1 and SHA-256?
SHA-1 produces a 160-bit hash (40 characters) while SHA-256 produces a 256-bit hash (64 characters). SHA-256 is more secure and is the current standard for cryptographic hashing.