How to tamper a X509 format certificate?

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

  •  29-06-2023
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Вопрос

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.

Это было полезно?

Решение

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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