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SHA-384 Generator

This SHA384 generator returns the 96-character SHA-384 hash of your text, in hex or in the Base64 form that Subresource Integrity attributes use.

Hashed in your browser. Your text is not uploaded.
Built and reviewed by · Updated

Hashed as UTF-8. A trailing space or line break changes the hash.

Algorithms

How to use the SHA-384 Generator

  1. Put your text in the box. A short string such as abc is enough to compare against another SHA-384 tool.
  2. Choose hex for a checksum, or Base64 when you are building an integrity value.
  3. Paste an existing hash into Compare with to check it.
  4. Copy the result from the SHA-384 row.

How SHA-384 works

SHA-384 is SHA-512 with different starting values, cut down to the first 384 bits. It processes 1024-bit blocks with 64-bit arithmetic over 80 rounds, which makes it faster than SHA-256 on most 64-bit processors.

Because part of the internal state is dropped, SHA-384 is not open to the length extension attack that affects SHA-256 and SHA-512 when they are misused as a keyed hash. The page computes it with the browser's crypto.subtle.digest('SHA-384', ...), so your text stays local.

Examples

The standard test input abc gives:

cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7

The text hello gives 59e1748777448c69de6b800d7a33bbfb9ff1b463e44354c3553bcdb9c666fa90125a3c79f90397bdf5f6a13de828684f.

For Subresource Integrity, take the Base64 form of the file's SHA-384 and write it as integrity="sha384-..." on the <script> or <link> tag.

Limitations

  • An integrity value must be the hash of the exact file the CDN serves. The box hashes typed text, so it fits small inline content and test strings, not a whole library file.
  • SHA-384 is a fast hash. Do not use it alone to store passwords.
  • The compare box accepts hex or Base64, but not the sha384- prefix. Paste the value without it.

Frequently asked questions

Why use SHA-384 instead of SHA-256?

It has a longer output and resists length extension. Some standards ask for it, such as the US government's CNSA suite, and many CDNs publish SHA-384 integrity values.

How long is a SHA-384 hash?

384 bits. That is 96 hex characters or 64 Base64 characters.

Is SHA-384 part of SHA-2 or SHA-3?

SHA-2. The SHA-3 version of the same size is SHA3-384, which gives a different value and can be ticked in the same box.

Often used together with SHA-384 Generator.

  • SHA-256 Generator

    SHA-256 hash of text in hex or Base64, compared with a checksum when you paste one.

  • Hash Generator

    Hashes text with ten algorithms and compares the result with an expected hash.