Compute a SHA-224 digest

Compute a 224-bit SHA-2 digest for compatibility.

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ToolSHA-224 Hash
Input
Output
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How it works

SHA-224 uses the SHA-256 compression function with distinct initial values and truncates the final state to 224 bits after 512-bit block processing. Its initialization separates it from a simple shortened SHA-256 display.

  • The shorter SHA-2 digest fits protocols that need less output.

Worked example

Hash of "abc"
The FIPS 180-4 test vector for SHA-224
Input
											abc
Output
												Hash hex: 23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7

When to use this

Legacy protocols, compliance tests, and digest-width migrations use SHA-224.

Edge cases

  • Truncating SHA-256 does not reproduce SHA-224.
  • Different text encoding changes the message bytes.
  • A digest alone does not authenticate a file against replacement.

References