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diff --git a/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/regtests/testchangeauth.bat b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/regtests/testchangeauth.bat
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+++ b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/regtests/testchangeauth.bat
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+REM #############################################################################
+REM # #
+REM # TPM2 regression test #
+REM # Written by Ken Goldman #
+REM # IBM Thomas J. Watson Research Center #
+REM # #
+REM # (c) Copyright IBM Corporation 2015 - 2020 #
+REM # #
+REM # All rights reserved. #
+REM # #
+REM # Redistribution and use in source and binary forms, with or without #
+REM # modification, are permitted provided that the following conditions are #
+REM # met: #
+REM # #
+REM # Redistributions of source code must retain the above copyright notice, #
+REM # this list of conditions and the following disclaimer. #
+REM # #
+REM # Redistributions in binary form must reproduce the above copyright #
+REM # notice, this list of conditions and the following disclaimer in the #
+REM # documentation and/or other materials provided with the distribution. #
+REM # #
+REM # Neither the names of the IBM Corporation nor the names of its #
+REM # contributors may be used to endorse or promote products derived from #
+REM # this software without specific prior written permission. #
+REM # #
+REM # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS #
+REM # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT #
+REM # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR #
+REM # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT #
+REM # HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, #
+REM # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT #
+REM # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, #
+REM # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY #
+REM # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT #
+REM # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE #
+REM # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #
+REM # #
+REM #############################################################################
+
+setlocal enableDelayedExpansion
+
+echo ""
+echo "Object Change Auth"
+echo ""
+
+for %%B in ("" "-bi 80000001 -pwdb sig") do (
+
+ for %%S in ("" "-se0 02000000 1") do (
+
+ echo "Load the signing key under the primary key"
+ %TPM_EXE_PATH%load -hp 80000000 -ipr signrsa2048priv.bin -ipu signrsa2048pub.bin -pwdp sto > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Start an HMAC session %%~B"
+ %TPM_EXE_PATH%startauthsession -se h %%~B > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Object change auth, change password to xxx %%~S"
+ %TPM_EXE_PATH%objectchangeauth -ho 80000001 -pwdo sig -pwdn xxx -hp 80000000 -opr tmppriv.bin %%~S > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Load the signing key with the changed auth %%~S"
+ %TPM_EXE_PATH%load -hp 80000000 -ipr tmppriv.bin -ipu signrsa2048pub.bin -pwdp sto %%~S > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Sign a digest with the original key %%~S"
+ %TPM_EXE_PATH%sign -hk 80000001 -halg sha1 -if policies/aaa -os sig.bin -pwdk sig %%~S > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Sign a digest with the changed key"
+ %TPM_EXE_PATH%sign -hk 80000002 -halg sha1 -if policies/aaa -os sig.bin -pwdk xxx > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Flush the key"
+ %TPM_EXE_PATH%flushcontext -ha 80000001 > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Flush the key"
+ %TPM_EXE_PATH%flushcontext -ha 80000002 > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ echo "Flush the auth session"
+ %TPM_EXE_PATH%flushcontext -ha 02000000 > run.out
+ IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+ )
+
+ )
+)
+
+echo ""
+echo "Object Change Auth with password from file"
+echo ""
+
+echo "Load the decryption key under the primary key 80000001"
+%TPM_EXE_PATH%load -hp 80000000 -ipr derrsa2048priv.bin -ipu derrsa2048pub.bin -pwdp sto > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Generate a random password"
+%TPM_EXE_PATH%getrandom -by 16 -ns -nz -of tmppwd.bin > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Object change auth, change password"
+%TPM_EXE_PATH%objectchangeauth -hp 80000000 -ho 80000001 -pwdo dec -ipwdn tmppwd.bin -opr tmppriv.bin > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Load the decryption key with the changed auth 800000002"
+%TPM_EXE_PATH%load -hp 80000000 -pwdp sto -ipr tmppriv.bin -ipu derrsa2048pub.bin > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Encrypt the message"
+%TPM_EXE_PATH%rsaencrypt -hk 80000002 -id policies/aaa -oe tmpenc.bin > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Decrypt the message"
+%TPM_EXE_PATH%rsadecrypt -hk 80000002 -ipwdk tmppwd.bin -ie tmpenc.bin -od tmpdec.bin > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Compare the result"
+tail --bytes=3 tmpdec.bin > tmp.bin
+diff policies/aaa tmp.bin
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Flush the keypair 80000001"
+%TPM_EXE_PATH%flushcontext -ha 80000001 > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+echo "Flush the keypair 80000002"
+%TPM_EXE_PATH%flushcontext -ha 80000002 > run.out
+IF !ERRORLEVEL! NEQ 0 (
+ exit /B 1
+)
+
+REM cleanup
+
+rm tmppwd.bin
+rm tmpenc.bin
+rm tmpdec.bin
+
+exit /B 0
+
+REM getcapability -cap 1 -pr 80000000
+REM getcapability -cap 1 -pr 02000000
+
+REM flushcontext -ha 80000001
+REM flushcontext -ha 80000002
+REM flushcontext -ha 02000000