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Key Vault drops "=" either while wrapping or unwrapping.

Copper Contributor



we have created an application for our customer. Somehow this week it stopped working.


While debugging I found somehow "=" are dropped after unwrapping.


I can verify this with the Rest API.


First I wrap this:


{ "alg": "RSA-OAEP-256", "value": "08vUy8_Ub5mzmqbE7kZOXQ==" }


And the result after unwrapping is this:


{ "kid": "", "value": "08vUy8_Ub5mzmqbE7kZOXQ" }


This seemed to have changed recently. As we use rust in our application reverting the base64 now fails.


I also tried with another value, which only had one =, which resulted in the same behavior.


Did anyone experience the same?



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