OpenSSL "pkey -pubout" - Extract RSA Public Key
Q
How to extract the public key from an RSA key file using OpenSSL "pkey" command?
✍: FYIcenter.com
A
If you want to extract the public key out from an RSA key file (private key an public key),
you can use the OpenSSL "pkey -pubout" command as shown below:
C:\Users\fyicenter>\local\openssl\openssl.exe OpenSSL> pkey -in my_rsa.key -pubout -out my_rsa_pub.key OpenSSL> exit C:\Users\fyicenter>type my_rsa_pub.key -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDAExMAY742YWBAnv+3NTAI+cUR lQQsszJtWO+tz2wryoe0XbD3x0tm5tByOjcZ7Hbp7QlaURf2Xmk3aN02UCOQGPG8 G4uIcK+2vCcIdiTCwL2DujkxYg5u5gAtgQCTrNBqJiGnGDEoNJaxAvR/PkqFM8D2 vvoat6ixisha/631UQIDAQAB -----END PUBLIC KEY-----
Options used in this command are:
- "-in my_rsa.key" - Read the RSA key file from: C:\Users\fyicenter\my_rsa.key
- "-pubout" - Extract the public key out of the RSA key file
- "-out my_rsa_pub.key" - Save the public key in a file with no password protection.
2018-01-16, 554👍, 0💬