diff --git a/meta-integrity/recipes-core/initrdscripts/files/init.ima b/meta-integrity/recipes-core/initrdscripts/files/init.ima
index f11ff13..c663817 100755
--- a/meta-integrity/recipes-core/initrdscripts/files/init.ima
+++ b/meta-integrity/recipes-core/initrdscripts/files/init.ima
@@ -97,6 +97,19 @@ fi
 
 mount --move ${ROOT_DIR}/proc /proc
 
+# If we have a secondary trusted keyring, here is the opportunity to load
+# additional trusted keys from the real rootfs.
+for cert in ${ROOT_DIR}/etc/keys/x509_secondary_*.der; do
+    [ ! -s "$cert" ] && continue
+    name=`basename $cert`
+
+    if ! keyctl padd asymmetric "$name" %:.secondary_trusted_keys < $cert > ${ROOT_DIR}/dev/null; then
+        print_critical "Unable to load the secondary certificate $cert"
+    else
+        print_verbose "The secondary certificate $cert has been loaded"
+    fi
+done
+
 # The trusted IMA certificate /etc/keys/x509_evm.der in initramfs was
 # automatically loaded by kernel already. Here is the opportunity to load
 # a custom IMA certificate from the real rootfs.
diff --git a/meta-signing-key/recipes-support/key-store/key-store_0.1.bb b/meta-signing-key/recipes-support/key-store/key-store_0.1.bb
index 66691cc..30485a7 100644
--- a/meta-signing-key/recipes-support/key-store/key-store_0.1.bb
+++ b/meta-signing-key/recipes-support/key-store/key-store_0.1.bb
@@ -31,6 +31,7 @@ SYSTEM_CERT = "${KEY_DIR}/system_trusted_key.crt"
 
 # For ${PN}-secondary-trusted-cert
 SECONDARY_TRUSTED_CERT = "${KEY_DIR}/secondary_trusted_key.crt"
+SECONDARY_TRUSTED_DER_ENC_CERT = "${KEY_DIR}/x509_secondary_system_trusted_key.der"
 
 # For ${PN}-modsign-cert
 MODSIGN_CERT = "${KEY_DIR}/modsign_key.crt"
@@ -99,6 +100,8 @@ do_install() {
     key_dir="${@uks_secondary_trusted_keys_dir(d)}"
     install -m 0644 "$key_dir/secondary_trusted_key.crt" \
         "${D}${SECONDARY_TRUSTED_CERT}"
+    openssl x509 -inform PEM -outform DER -in "${D}${SECONDARY_TRUSTED_CERT}" \
+        -out "${D}${SECONDARY_TRUSTED_DER_ENC_CERT}"
 
     if [ "${@uks_signing_model(d)}" = "sample" -o "${@uks_signing_model(d)}" = "user" ]; then
         install -m 0400 "$key_dir/secondary_trusted_key.key" \
@@ -167,8 +170,14 @@ PACKAGES_DYNAMIC = "\
 FILES_${PN}-system-trusted-cert = "${SYSTEM_CERT}"
 CONFFILES_${PN}-system-trusted-cert = "${SYSTEM_CERT}"
 
-FILES_${PN}-secondary-trusted-cert = "${SECONDARY_TRUSTED_CERT}"
-CONFFILES_${PN}-secondary-trusted-cert = "${SECONDARY_TRUSTED_CERT}"
+FILES_${PN}-secondary-trusted-cert = "\
+    ${SECONDARY_TRUSTED_CERT} \
+    ${SECONDARY_TRUSTED_DER_ENC_CERT} \
+    "
+CONFFILES_${PN}-secondary-trusted-cert = "\
+    ${SECONDARY_TRUSTED_CERT} \
+    ${SECONDARY_TRUSTED_DER_ENC_CERT} \
+    "
 
 FILES_${PN}-modsign-cert = "${MODSIGN_CERT}"
 CONFFILES_${PN}-modsign-cert = "${MODSIGN_CERT}"