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Add a note about ASN.1 structures edition
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@ -195,6 +195,33 @@ openssl pkcs7 -print_certs -in certificatename.p7b -out certificatename.cer
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openssl pkcs12 -export -in certificatename.cer -inkey privateKey.key -out certificatename.pfx -certfile cacert.cer
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```
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* **ASN.1 (DER/PEM) editing** (works with certificates or almost any other ASN.1 structure):
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1. Clone [asn1template](https://github.com/wllm-rbnt/asn1template/)
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```bash
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git clone https://github.com/wllm-rbnt/asn1template.git
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```
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2. Convert DER/PEM to OpenSSL's generation format
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```bash
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asn1template/asn1template.pl certificatename.der > certificatename.tpl
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asn1template/asn1template.pl -p certificatename.pem > certificatename.tpl
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```
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3. Edit certificatename.tpl according to your requirements
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```bash
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vim certificatename.tpl
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```
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4. Rebuild the modified certificate
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```bash
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openssl asn1parse -genconf certificatename.tpl -out certificatename_new.der
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openssl asn1parse -genconf certificatename.tpl -outform PEM -out certificatename_new.pem
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```
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***
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<figure><img src="../.gitbook/assets/image (48).png" alt=""><figcaption></figcaption></figure>
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