sha-1 generator

Online SHA-1 generator

SHA-1 still appears in old documentation and integrations. This page keeps the flow simple while making the security context clear.

Input text

Digest

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SHA-1Hash12 B160 bitslegacy with warning

Hash legado amplamente reconhecido, mas com fragilidades conhecidas.

Text, files and secrets are processed locally. Nothing is sent to the server.

Continue in the tool

SHA-1 was widely used in old signatures, certificates and version-control workflows, but lost relevance in modern security.
Use this page for compatibility and study, not for new critical architectures.

Classic validation digest.

Useful for reproducing historical documentation.

Does the tool generate hashes locally?

Yes. Text, files and HMAC secrets are processed directly in the browser without any upload.

What is the difference between a hash, a checksum and HMAC?

Is MD5 still useful for anything?

When should I use SHA-256?

Are CRC32 and Adler-32 encryption?

What changes when I use HMAC?

Can I calculate a file hash without uploading the file?

Does comparison ignore uppercase, lowercase and spaces?

Can I use this generator for passwords?

Is it worth creating dedicated pages for MD5, SHA-256 and others?

Only when compatibility requires it. For new projects, prefer SHA-256 or stronger.

Yes. The value is calculated in the browser without sending the text anywhere.