Generate random UDID

Question

Find this string in HTTP POST request.

<UDID>92b690dd7d6c90e10eb3540edf2eedc8b075b8fd</UDID>

How can I generate random UDIDs in this format in C#?

Please at least [show some kind of attempt at figuring this out yourself](http://idownvotedbecau.se/noattempt/) to avoid downvotes. — Heretic Monkey, Feb 12 '19 at 15:25
See https://www.theiphonewiki.com/wiki/UDID#2007-August_2018 how to calculate a UDID. Basically it's the SHA1 hash of the serial number + IMEI (or empty string if no IMEI) + WiFi MAC address + Bluetooth MAC address. — ckuri, Feb 12 '19 at 15:29
Use the answers to [How can I generate random alphanumeric strings?](https://stackoverflow.com/q/1344221/215552) to generate a random string of your desired length and character range. — Heretic Monkey, Feb 12 '19 at 15:35

score 0 · Answer 1 · answered Feb 12 '19 at 15:24

0

You could use the code

       var xpto = Guid.NewGuid().ToString("N");

It gives you a GUID without hyphens, what I think should do what you want.

answered Feb 12 '19 at 15:24

5

This generates a GUID with 32 characters, OP's UUID is 40 characters long. – Tobias Tengler Feb 12 '19 at 15:25
I see, well yeah, if he needs a 40 char long it wont do. – João Paulo Amorim Feb 12 '19 at 15:29
1

@TobiasTengler - out of curiosity, you didn't actually count the characters of OPs UDID, or did you? – Rand Random Feb 12 '19 at 15:46
@RandRandom thats not difficult if you put the string on notepad++ – João Paulo Amorim Feb 12 '19 at 15:47
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@RandRandom nope, I used a [Chrome Extension](https://imgur.com/XFTCKmU) that shows me the character count of highlighted text. – Tobias Tengler Feb 12 '19 at 21:06
@JoãoPauloAmorim - `Guid`'s do not have a guarantee of being random, only unique. You should never assume randomness in a Guid. – Enigmativity Mar 13 '19 at 06:12

1 Answers1