NAME

       pki --pub - Extract a public key from a private key or certificate

SYNOPSIS

       pki --pub [--in file|--keyid hex] [--type type] [--outform encoding] [--debug level]

       pki --pub --options file

       pki --pub -h | --help

DESCRIPTION

       This sub-command of pki(1) extracts public keys from a private keys and certificates.

OPTIONS

       -h, --help
              Print usage information with a summary of the available options.

       -v, --debug level
              Set debug level, default: 1.

       -+, --options file
              Read command line options from file.

       -i, --in file
              Input file. If not given the input is read from STDIN.

       -x, --keyid hex
              Smartcard or TPM private key object handle in hex format with an optional 0x prefix.

       -t, --type type
              Type  of  input.  One of priv (private key), rsa (RSA private key), ecdsa (ECDSA private key), pub
              (public key), pkcs10 (PKCS#10 certificate request), or x509 (X.509 certificate), defaults to priv.

       -f, --outform encoding
              Encoding of the extracted public key. One of der (ASN.1 DER), pem (Base64 PEM), dnskey  (RFC  3110
              DNS key), or sshkey (RFC 4253 SSH key), defaults to der.

EXAMPLES

       Extract the public key from an RSA private key:

         pki --pub --in key.der > pub.der

       Extract the public key from an X.509 certificate:

         pki --pub --in cert.der --type x509 > pub.der

SEE ALSO

       pki(1)