Does apnonce Value Reset When I Use Blobsaver

[gray yarrow]

Hello guys, I have some questions about apnonce and blobs.

• If I use"read from device" feature will apnonce be reset every time that i use the feature?
• I always save blobs with two generators (one of the generator comes from blobsaver, other one ise 0x1111111111111111) , If apnonce value resets can i use this blobs)
• Is there an any method check my device's apnonce validity without reset the value?
• I have updated my my device to 15.7.1 from 15.6 with OTA, did my apnonce reset? (I'm not talking about generator)
• When I check my blobs on verify.shsh.host , my iPhone's blobs seems valid but iPad's doesn't, what could have caused this?

[atomic hinge]

@gray yarrow thanks for creating a new thread!

Please use /solved to close this thread when you're done.

[gray yarrow]

(please excuse any errors that i made on this thread, I'm not native speaker)

[neon cedar]

APNonce gets reset after every restoring or update operation

so your iPad’s apnonce is reset to another one, yes

[gray yarrow]

Thanks for the answer m8

[gray yarrow]

please someone clarify these questions

[neon cedar]

1. no
2. you NEED apnonce, generator is optional
3. yes, blobsaver's "read from device"
4. yes
5. your iPad was the one who got updated to 15.7.1?

if yes, your apnonce was reset

[gray yarrow]

Thank you so much for the answers

For the fifth answer: i updated my iphone not the iPad

[neon cedar]

apnonce gets reset after update so your iPhone’s apnonce is different

idk why your iPad blobs aren’t valid

[gray yarrow]

Hmm :/
Thanks again, but why did Apple make the saving blobs so hard

Btw I'm always wondering Why nobody hasn't replicated the Apple signing server until now

[neon cedar]

it’s almost impossible

Apple uses very strong cryptography

(SHA-372)

[gray yarrow]

(SHA-372)

Oh ok that's normal SHA384 is not vulnerable.

Thanks again for the helps and the answers. 🙏🏻