Question 1

What is SHA-3?

Accepted Answer

SHA-3 (Secure Hash Algorithm 3) is the latest member of the Secure Hash Algorithm family, standardized by NIST in 2015. It is based on the Keccak sponge construction.

Question 2

What is the difference between SHA3-256 and SHA3-512?

Accepted Answer

SHA3-256 produces a 256-bit (64-character hex) hash, while SHA3-512 produces a 512-bit (128-character hex) hash. SHA3-512 provides higher security margin.

Question 3

Is SHA-3 more secure than SHA-256?

Accepted Answer

Both are considered secure. SHA-3 uses a completely different internal structure (Keccak sponge) compared to SHA-2, providing algorithm diversity for defense in depth.

Question 4

Does the Web Crypto API support SHA-3?

Accepted Answer

No. The Web Crypto API does not natively support SHA-3. This tool uses a JavaScript implementation of the Keccak sponge function.

Question 5

Is my data sent to a server?

Accepted Answer

No. All hashing happens locally in your browser using JavaScript. Your data never leaves your device.

Question 6

When should I use SHA-3?

Accepted Answer

Use SHA-3 when you need algorithm diversity from SHA-2, or when compliance requirements specify SHA-3. It is also used in Ethereum (Keccak-256).

SHA-3 Hash Generator

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