How to tamper a X509 format certificate?

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

  •  29-06-2023
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문제

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.

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해결책

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:

enter image description here

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