security - openSUSE shim certificate for uefi secure boot -


is opensuse shim bootloader signed opensuse private key? if so, can find corresponding opensuse certificate secure boot verification purpose?

a public key can retrieved shim source package:

  1. download http://download.opensuse.org/source/distribution/13.1/repo/oss/suse/src/shim-0.2-3.1.src.rpm
  2. extract using e.g.: rpm2cpio shim-0.2-3.1.src.rpm | cpio -dium
  3. unpack tar-ball inside: tar-xjf shim-12.3-update.tar.xz

  4. the certificate can found in usr/lib64/efi subdir: openssl x509 -inform der -in usr/lib64/efi/shim-opensuse.der -text

    certificate: data: version: 3 (0x2) serial number: 1 (0x1) signature algorithm: sha256withrsaencryption issuer: cn=opensuse secure boot ca, c=de, l=nuremberg, o=opensuse project/emailaddress=build@opensuse.org

you can verify 2nd stage bootloaders , kernels using sbverify sbsigntool package (that's called on ubuntu)


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