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fix tpm certificate handling

fixed handling of security certificates in tpm mode

The code that handles the installation of tpm security
certificates stopped working after recent updates to
other packages

This commit updates the code to properly work with the
current system configuration

Closes-Bug: #1808163

Change-Id: I76e10cf1ed68cfeb0ce3ee560df0c34711f57af2
Signed-off-by: Paul-Emile Element <Paul-Emile.Element@windriver.com>
changes/20/680920/1
Paul-Emile Element 3 years ago
parent
commit
9a8bc17015
  1. 52
      security/stx-ssl/files/tpmdevice-setup
  2. 8
      security/tpm2-openssl-engine/tpm2-openssl-engine/e_tpm2.c

52
security/stx-ssl/files/tpmdevice-setup

@ -7,6 +7,8 @@
# TPM setup (both active controller and remote)
export TPM_INTERFACE_TYPE=dev
CERTIFICATE_FILE="server-cert.pem"
LOGFILE="/etc/ssl/private/.install.log"
ORIGINAL_KEY=$1
@ -53,8 +55,7 @@ declare -a helper_scripts=("tss2_createprimary"
"tss2_contextsave"
"tss2_evictcontrol"
"tss2_flushcontext"
"create_tpm2_key"
"resourcemgr")
"create_tpm2_key")
for src in "${helper_scripts[@]}"; do
if ! type "$src" &>/dev/null; then
error_exit "ERROR: Cannot find $src. Needed for TPM configuration"
@ -62,41 +63,6 @@ for src in "${helper_scripts[@]}"; do
done
}
startResourceMgr () {
resourcemgr &>> $LOGFILE 2>&1 &
# ensure the resourcemgr is started
for i in {1..5}
do
sleep 0.5
MGR_RUNNING=`pidof resourcemgr`
if [ ! -z $MGR_RUNNING ]; then
break
fi
done
[ ! -z $MGR_RUNNING ] || error_exit "Unable to start TPM resourcemgr"
# check to see if the resourcemgr port is open
IS_OPEN=0
for i in {1..5}
do
sleep 0.5
_test=`netstat -an | grep $RESOURCEMGR_DEFAULT_PORT | grep -i listen`
if [ ! -z "$_test" ]; then
IS_OPEN=1
break
fi
done
[ $IS_OPEN -ne 0 ] || error_exit "Unable to initialize resourcemgr"
}
stopResourceMgr () {
# Kill any previous instances of resourcemgr
pkill -c -TERM resourcemgr &> /dev/null 2>&1
}
### Main ###
# remove previous object context
rm -f $TPM_OBJECT_CONTEXT &> /dev/null
@ -115,14 +81,10 @@ if [ "$TPM_VERSION" != "2.0" ]; then
error_exit "ERROR: TPM Device is not version 2.0 compatible"
fi
# Start the Intel ResourceMgr to clear the NV
# Clear the NV
# as well as all stale transient handles in
# the endorsement hierarchy.
# Since ResourceMgr has a number of stability,
# and security issues, we will stop it after it
# initializes the NV and Handle space
startResourceMgr
stopResourceMgr
tss2_clear -hi l
# Create the Endorsement Primary Key hierarchy which will be used
# for wrapping the private key. Use RSA as the primary key encryption
@ -136,14 +98,14 @@ PRIMARY_HANDLE="0x$PRIMARY_HANDLE"
# be persistently stored in TPM NV.
# evict the persistent handle if it exists previously
tss2_evictcontrol -hi o -ho $TPM_KEY_HIERARCHY_HANDLE -hp $TPM_KEY_HIERARCHY_HANDLE
tss2_evictcontrol -hi o -ho $PRIMARY_HANDLE -hp $TPM_KEY_HIERARCHY_HANDLE &>> $LOGFILE
tss2_evictcontrol -hi o -ho $PRIMARY_HANDLE -hp $TPM_KEY_HIERARCHY_HANDLE >> $LOGFILE
[ $? -eq 0 ] || error_exit "Unable to persist Key Hierarchy in TPM memory"
tss2_flushcontext -ha $PRIMARY_HANDLE
# wrap the original private key in TPM's Endorsement key hierarchy
# this will generate a TSS key blob in ASN 1 encoding
create_tpm2_key -p $TPM_KEY_HIERARCHY_HANDLE -w $ORIGINAL_KEY $TPM_OBJECT_CONTEXT &>> $LOGFILE
create_tpm2_key -p $TPM_KEY_HIERARCHY_HANDLE -w $ORIGINAL_KEY $TPM_OBJECT_CONTEXT >> $LOGFILE
[ $? -eq 0 ] || error_exit "Unable to wrap provided private key into TPM Key Hierarchy"
# the apps will also need to the public key, place it in

8
security/tpm2-openssl-engine/tpm2-openssl-engine/e_tpm2.c

@ -312,6 +312,14 @@ static int tpm_engine_init(ENGINE * e)
* N.B: This assumes that the kernel-modules-tpm
* pkg is installed with the modified tpm_crb KLM
*/
if ((result = p_tpm2_Set_Property(hContext,
TPM_INTERFACE_TYPE, "dev"))) {
DBG("Failed to set Resource Manager in context (%p): rc %d",
hContext, (int)result);
TSSerr(TPM_F_TPM_ENGINE_INIT, TPM_R_UNIT_FAILURE);
goto err;
}
if ((result = p_tpm2_Set_Property(hContext,
TPM_DEVICE, "/dev/tpmrm0"))) {
DBG("Failed to set Resource Manager in context (%p): rc %d",

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