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2

Absolutely. There is no risk from appending the nounce/iv to encrypted text.


1

As per OpenID Connect Core documentation: The nonce parameter value needs to include per-session state and be unguessable to attackers. One method to achieve this for Web Server Clients is to store a cryptographically random value as an HttpOnly session cookie and use a cryptographic hash of the value as the nonce parameter. In that case, the ...


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In TLS 1.2 and before, the Random field of the Client and Server Hello messages indeed have a random bytes part and a timestamp. The purpose of the timestamp is to increase the chance to have a unique value even if the random number generator is flawed and produces duplicate random bytes. This however is not the current practice, modern TLS implementations ...



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