tpmtool command examples

tpmtool – GnuTLS TPM tool

To generate a key that is to be stored in filesystem use:

$ tpmtool --generate-rsa --bits 2048 --outfile tpmkey.pem

To generate a key that is to be stored in TPM’s flash use:

$ tpmtool --generate-rsa --bits 2048 --register --user

To get the public key of a TPM key use:

$ tpmtool --pubkey tpmkey:uuid=58ad734b-bde6-45c7-89d8-756a55ad1891;storage=user --outfile pubkey.pem

or if the key is stored in the filesystem:

$ tpmtool --pubkey tpmkey:file=tmpkey.pem --outfile pubkey.pem

To list all keys stored in TPM use:

$ tpmtool --list