SHA1 Generator
Generate SHA1 hash instantly with HMAC secrets
Know more about SHA1 Hash Algorithm
What is SHA1?
SHA1 (Secure Hash Algorithm 1) is a cryptographic hash function that produces a 160-bit (20-byte) hash value, typically rendered as a 40-digit hexadecimal number. Designed by the NSA in 1995, SHA1 was widely used for digital signatures and SSL certificates.
Current Status & Security
SHA1 is considered cryptographically broken due to collision vulnerabilities demonstrated in 2017. NIST recommends migrating to SHA-2 or SHA-3 by 2030. However, SHA1 remains useful for Git repositories, checksums, and legacy system compatibility where collision resistance isn't critical.
Common Use Cases
- • Git version control systems (commit identification)
- • Legacy system integration and backward compatibility
- • Non-security data integrity verification
- • HMAC applications (still considered secure)
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