Does Constant-Time Equal upload my file or text to Tool-You servers?

No. Constant-Time Equal runs in this browser tab. Files stay on the device. Limit note: Both empty fails.

Should I use Password Strength instead of Constant-Time Equal?

Use Constant-Time Equal when you need Constant-time compare with lengths. Use Password Strength when you need Estimate password entropy and crack time. They share a category (Crypto) but not the same job.

Constant-Time Equal

Constant-time compare with lengths.

Compare two strings with a length-aware equality flag (demo of constant-time style checks). Reports lengths of A and B without leaking early exits in the UI.

What Constant-Time Equal does

Compare two strings with a length-aware equality flag (demo of constant-time style checks). Reports lengths of A and B without leaking early exits in the UI.

The interactive controls for Constant-Time Equal load after this article so crawlers still read the instructions. Path /crypto/constant-time-eq is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for Constant-Time Equal.

How to use Constant-Time Equal

Keep this tab on Constant-Time Equal (/crypto/constant-time-eq). Pasting into the wrong Crypto tool (for example Password Strength) changes the job.
Paste or type the input Constant-Time Equal expects. Path hint: crypto · constant time eq. Constant-time compare with lengths.
Apply the Constant-Time Equal action only. HMAC-SHA256 is a different transform (HMAC-SHA256 hex and Base64; optional uppercase.). Compare two strings with a length-aware equality flag (demo of constant-time style checks). Reports lengths of A and B without leaking early exits in the UI.
Copy the output of Constant-Time Equal if you need it elsewhere. Size/complexity still follows: Both empty fails.
If the text job is actually Estimate password entropy and crack time., leave Constant-Time Equal and open Password Strength.

When not to use Constant-Time Equal

Skip Constant-Time Equal when a neighbor tool matches better — start with Password Strength or HMAC-SHA256 — or when the description already warns the job will fail. In the tool’s own words: Compare two strings with a length-aware equality flag (demo of constant-time style checks). Reports lengths of A and B without leaking early exits in the UI.

Questions about Constant-Time Equal

What does Constant-Time Equal do that other Crypto pages on this site do not?: Compare two strings with a length-aware equality flag (demo of constant-time style checks). Reports lengths of A and B without leaking early exits in the UI. Short version: Constant-time compare with lengths.
Does Constant-Time Equal upload my file or text to Tool-You servers?: No. Constant-Time Equal runs in this browser tab. Files stay on the device. Limit note: Both empty fails.
Should I use Password Strength instead of Constant-Time Equal?: Use Constant-Time Equal when you need Constant-time compare with lengths. Use Password Strength when you need Estimate password entropy and crack time. They share a category (Crypto) but not the same job.
What are the limits of Constant-Time Equal?: Both empty fails. Also: Compare two strings with a length-aware equality flag (demo of constant-time style checks). Reports lengths of A and B without leaking early exits in the UI.