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Extract The Modulus From Your Private Key

  • Extract public key from the private key file:

To generate a MODULUS, first you need to extract the public key from your RSA private key:

openssl rsa -in <file_name_key>.key -outform PEM -pubout -out <file_name_public>.pub

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Note: EX00000298 is used for the filename during public key extraction for illustration purpose only.

  • Sample of Public Key

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  • Extract modulus from the public key

The modulus is in the public key and you can get them using the following command:

openssl rsa -pubin -in <file_name_public>.pub -text -noout

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