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In test mode, don't include AdditionalCertChain in protectedData.#217

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mdwivedi merged 2 commits into from
Sep 12, 2022
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In test mode, don't include AdditionalCertChain in protectedData. #217

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14f1aa3
Merge pull request #105 from divegeek/Javacard_KeyMint_200_master
subrahmanyaman Aug 24, 2022
647c871
In RKP test mode, skip including AdditionalCertChain from ProtectedData
subrahmanyaman Aug 26, 2022
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2 changes: 1 addition & 1 deletion Applet/JCardSimProvider/test/com/android/javacard/test/KMRKPFunctionalTest.java
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Expand Up@@ -261,7 +261,7 @@ public void testGenerateCsrProdMode() {
init();
short[] noOfKeys = {0, 5, 10};
for (int i = 0; i < noOfKeys.length; i++) {
testGenerateCsr(noOfKeys[i] /*no_keys*/, (short) 2 /*eek_chain_len*/, true /*testMode*/);
testGenerateCsr(noOfKeys[i] /*no_keys*/, (short) 2 /*eek_chain_len*/, false /*testMode*/);
KMRepository.instance().clean();
}
cleanUp();
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8 changes: 5 additions & 3 deletions Applet/JCardSimProvider/test/com/android/javacard/test/KMTestUtils.java
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Expand Up@@ -447,7 +447,7 @@ public static void validateProtectedData(KMSEProvider cryptoProvider, KMEncoder
// Validate the decrypted payload.
// payload = [signedMac + bcc + ? AdditionalCertChain]
//--------------------------------------------
short payloadLength = 3;
short payloadLength = testMode ? (short) 2 : (short) 3;
short additionalCertChain = 0;
short headersExp = KMCoseHeaders.exp();
short coseKeyExp = KMCoseKey.exp();
Expand All@@ -468,8 +468,10 @@ public static void validateProtectedData(KMSEProvider cryptoProvider, KMEncoder
KMArray.cast(arrInst).add((short) 2, KMByteBlob.exp());
KMArray.cast(arrInst).add((short) 3, KMByteBlob.exp());
short coseSignArr = KMArray.exp(arrInst);
additionalCertChain = KMMap.instance((short) 1);
KMMap.cast(additionalCertChain).add((short) 0, KMTextString.exp(), coseSignArr);
if (!testMode) {
additionalCertChain = KMMap.instance((short) 1);
KMMap.cast(additionalCertChain).add((short) 0, KMTextString.exp(), coseSignArr);
}
// protected payload exp
short payload = KMArray.instance(payloadLength);
KMArray.cast(payload).add((short) 0, signedMacArr);
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4 changes: 4 additions & 0 deletions Applet/src/com/android/javacard/keymaster/RemotelyProvisionedComponentDevice.java
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Expand Up@@ -561,6 +561,10 @@ public void process(short ins, APDU apdu) throws Exception {
}

private boolean isAdditionalCertificateChainPresent() {
if ((TRUE == data[getEntry(TEST_MODE)])) {
// In test mode, don't include AdditionalCertificateChain in ProtectedData.
return false;
}
return (storeDataInst.getAdditionalCertChainLength() == 0 ? false : true);
}

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