Can a encrypted message using BouncyCastle AESGCM get decrypted using AESGCM in .Net core 3.1

Asked Feb 19 '20 at 06:13

Active Feb 19 '20 at 06:13

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I have to use BouncyCastle AESGCM(https://www.bouncycastle.org/docs/docs1.5on/org/bouncycastle/crypto/modes/gcm/package-summary.html) to encrypt the message. So, I wonder if I could use AESGCM in .Net core 3.1 to decrypt this message. However, I got the error on the tag mismatch.

Notes: (1)BouncyCastle AESGCM (https://www.bouncycastle.org/docs/docs1.5on/org/bouncycastle/crypto/modes/gcm/package-summary.html) (2)AESGCM in .Net core 3.1 https://learn.microsoft.com/en-us/dotnet/api/system.security.cryptography.aesgcm?view=netcore-3.1

asked Feb 19 '20 at 06:13

wbing520

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Yes, the two implementations interoperate just fine. – President James K. Polk Feb 19 '20 at 20:49
Thank you, James. I figure it out the tag issue. Inside of the nonce the BouncyCastle AESGCM contains the tag info. – wbing520 Feb 20 '20 at 04:23

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