Is a UUID v4 really unique?

It contains 122 random bits: the chance of generating the same one twice is negligible.

Can the text be recovered from the hash?

No, a SHA hash is one-way. For passwords, use bcrypt or Argon2 instead.

Unique identifiers (UUID v4) and the SHA fingerprint of a text, computed in your browser.

UUID v4

How many?ProFree version: up to 10 UUIDs.Uppercase

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Text

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Is a UUID v4 really unique?: It contains 122 random bits: the chance of generating the same one twice is negligible.
Can the text be recovered from the hash?: No, a SHA hash is one-way. For passwords, use bcrypt or Argon2 instead.

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