How to tamper a X509 format certificate?

StackOverflow https://stackoverflow.com/questions/22936453

  •  29-06-2023
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题

I used openssl command line tool to generate a CA signed certificate. now I need to tamper it to generate the signature mismatch error.

Is there any tool available to tamper the X509 certificate.

有帮助吗？

解决方案

Open certificate file in ASN.1 Editor, find commonName node, right-click it and choose "Edit...":

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Change the text of commonName field:

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Hit OK, save your changes and there you are:

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