Converting Openssl signing to .NET 6

Andrus 121 Reputation points
2022-03-19T14:34:29.29+00:00

ASP. NET 6 MVC application invokes openssl for signing using 

openssl rsautl -sign -in rasi.bin -inkey riktest.key -out allkiri.bin

How to convert this to .NET 6 so that invoking openssl is not required?

riktest.key is text file containing 

-----BEGIN RSA PRIVATE KEY-----
MIIEpAIBAfddAQEArYjDH7msMFifeYc1AG/TkKpcz2LITI73sC0eqnlgmWi3F7PD
Bo8lWrCw32h3v/FFMrK8KuktlnBtsSLaCCz1DWuXORzHaW7EqG8O8QNzFSmhIoqp
...

Does .NET 6 System.Security.Cryptography namespace contain this OpenSsl functionality ?

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.NET: Microsoft Technologies based on the .NET software framework.Runtime: An environment required to run apps that aren't compiled to machine language.
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  1. Cristian SPIRIDON 4,471 Reputation points
    2022-03-26T05:57:09.727+00:00

    Hi,

    To sign data in .NET you can use following example:
    https://learn.microsoft.com/en-us/dotnet/api/system.security.cryptography.rsacryptoserviceprovider.signdata?view=net-6.0

    You have to figure out how to import your own key because the example is using an autogenerated key.

    Hope this helps!

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