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List: bouncycastle-crypto-dev
Subject: [dev-crypto] How to verify MAC with AES-GCM
From: Ola Martin Lykkja <Ola.Lykkja () q-free ! com>
Date: 2020-01-17 12:09:03
Message-ID: VI1PR02MB3168C941C0F5F7987F48614AAF310 () VI1PR02MB3168 ! eurprd02 ! prod ! outlook ! com
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Dear all,
I have a message that is privacy and integrity protected with AES-GCM.
The message has three parts, part 1 is device id and nonce, part2 is encryp=
ted payload, and part3 is mac. IV is derived from part 1 and the key is loo=
ked up in a database from information in part 1. How do I use the Bouncy Ca=
stle library to decrypt the payload and verify the MAC in Java?
Best regards,
Ola
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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a message that is privacy and integrity protected with \
AES-GCM.<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The message has three parts, part 1 is device id and nonce, \
part2 is encrypted payload, and part3 is mac. IV is derived from part 1 and the key \
is looked up in a database from information in part 1. How do I use the Bouncy Castle \
library to decrypt the payload and verify the MAC in Java?<o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Best \
regards,<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" \
style="mso-fareast-language:EN-US">Ola</span><span lang="EN-US" \
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