Steps to get public cert from a signed message

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Steps to get public cert from a signed message

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Problem

Extract public certs from a signed message

Solution

Steps to extract public certs from a signed message.

• Right-click on signed message and select "Show Original"

• Copy entire message and create a file on Linux system. (like signedcrt.msg in example below).

Run this command to save cert in signedcrt.pem

cat signedcrt.msg | openssl smime -pk7out | openssl pkcs7 -print_certs > signedcrt.pem