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BurgerZ/a_openssl_playground.md

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Created November 20, 2020 14:48
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openSSL public key extract
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openssl_public_key_extract.md

OpenSSL Extract Public Key from Cert

With the leaf certificate from Stackoverflow.com, you can extract the public key that is embedded inside of the cert with this command: openssl x509 -pubkey -noout -in stackexchangecom.crt > pubkey.pem Print your cert information.. openssl x509 -in stackexchangecom.crt -text -noout Print your public key... openssl rsa -inform PEM -pubin -in pubkey.pem -text -noout now you can compare the Modulus of the cert and public key to see they are the same.

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