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PiperOrigin-RevId: 597178877
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@brandonweeks @pfmaggi
brandonweeks authored and pfmaggi committed Jan 10, 2024
1 parent defc2fe commit 5602fc2
Showing 1 changed file with 92 additions and 31 deletions.
123 changes: 92 additions & 31 deletions src/main/java/com/afwsamples/testdpc/policy/utils/AuthorizationList.java
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,8 @@
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1SequenceParser;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.ASN1Util;
import org.bouncycastle.asn1.BERTags;

public class AuthorizationList {
// Algorithm values.
Expand Down Expand Up @@ -212,110 +214,169 @@ public AuthorizationList(ASN1Encodable sequence) throws CertificateParsingExcept
ASN1TaggedObject entry = parseAsn1TaggedObject(parser);
for (; entry != null; entry = parseAsn1TaggedObject(parser)) {
int tag = entry.getTagNo();
ASN1Primitive value = entry.getObject();
Log.i("Attestation", "Parsing tag: [" + tag + "], value: [" + value + "]");
Log.i(
"Attestation",
"Parsing tag: [" + tag + "], value: [" + entry.getBaseUniversal(true, tag) + "]");
switch (tag) {
default:
throw new CertificateParsingException("Unknown tag " + tag + " found");

case KM_TAG_PURPOSE & KEYMASTER_TAG_TYPE_MASK:
purposes = Asn1Utils.getIntegersFromAsn1Set(value);
purposes =
Asn1Utils.getIntegersFromAsn1Set(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.SET));
break;
case KM_TAG_ALGORITHM & KEYMASTER_TAG_TYPE_MASK:
algorithm = Asn1Utils.getIntegerFromAsn1(value);
algorithm =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_KEY_SIZE & KEYMASTER_TAG_TYPE_MASK:
keySize = Asn1Utils.getIntegerFromAsn1(value);
keySize =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
Log.i("Attestation", "Found KEY SIZE, value: " + keySize);
break;
case KM_TAG_DIGEST & KEYMASTER_TAG_TYPE_MASK:
digests = Asn1Utils.getIntegersFromAsn1Set(value);
digests =
Asn1Utils.getIntegersFromAsn1Set(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.SET));
break;
case KM_TAG_PADDING & KEYMASTER_TAG_TYPE_MASK:
paddingModes = Asn1Utils.getIntegersFromAsn1Set(value);
paddingModes =
Asn1Utils.getIntegersFromAsn1Set(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.SET));
break;
case KM_TAG_RSA_PUBLIC_EXPONENT & KEYMASTER_TAG_TYPE_MASK:
rsaPublicExponent = Asn1Utils.getLongFromAsn1(value);
rsaPublicExponent =
Asn1Utils.getLongFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_NO_AUTH_REQUIRED & KEYMASTER_TAG_TYPE_MASK:
noAuthRequired = true;
break;
case KM_TAG_CREATION_DATETIME & KEYMASTER_TAG_TYPE_MASK:
creationDateTime = Asn1Utils.getDateFromAsn1(value);
creationDateTime =
Asn1Utils.getDateFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_ORIGIN & KEYMASTER_TAG_TYPE_MASK:
origin = Asn1Utils.getIntegerFromAsn1(value);
origin =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_OS_VERSION & KEYMASTER_TAG_TYPE_MASK:
osVersion = Asn1Utils.getIntegerFromAsn1(value);
osVersion =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_OS_PATCHLEVEL & KEYMASTER_TAG_TYPE_MASK:
osPatchLevel = Asn1Utils.getIntegerFromAsn1(value);
osPatchLevel =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_VENDOR_PATCHLEVEL & KEYMASTER_TAG_TYPE_MASK:
vendorPatchLevel = Asn1Utils.getIntegerFromAsn1(value);
vendorPatchLevel =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_BOOT_PATCHLEVEL & KEYMASTER_TAG_TYPE_MASK:
bootPatchLevel = Asn1Utils.getIntegerFromAsn1(value);
bootPatchLevel =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_ACTIVE_DATETIME & KEYMASTER_TAG_TYPE_MASK:
activeDateTime = Asn1Utils.getDateFromAsn1(value);
activeDateTime =
Asn1Utils.getDateFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_ORIGINATION_EXPIRE_DATETIME & KEYMASTER_TAG_TYPE_MASK:
originationExpireDateTime = Asn1Utils.getDateFromAsn1(value);
originationExpireDateTime =
Asn1Utils.getDateFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_USAGE_EXPIRE_DATETIME & KEYMASTER_TAG_TYPE_MASK:
usageExpireDateTime = Asn1Utils.getDateFromAsn1(value);
usageExpireDateTime =
Asn1Utils.getDateFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_APPLICATION_ID & KEYMASTER_TAG_TYPE_MASK:
applicationId = Asn1Utils.getByteArrayFromAsn1(value);
applicationId =
Asn1Utils.getByteArrayFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ROLLBACK_RESISTANT & KEYMASTER_TAG_TYPE_MASK:
rollbackResistant = true;
break;
case KM_TAG_AUTH_TIMEOUT & KEYMASTER_TAG_TYPE_MASK:
authTimeout = Asn1Utils.getIntegerFromAsn1(value);
authTimeout =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_ALLOW_WHILE_ON_BODY & KEYMASTER_TAG_TYPE_MASK:
allowWhileOnBody = true;
break;
case KM_TAG_EC_CURVE & KEYMASTER_TAG_TYPE_MASK:
ecCurve = Asn1Utils.getIntegerFromAsn1(value);
ecCurve =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_USER_AUTH_TYPE & KEYMASTER_TAG_TYPE_MASK:
userAuthType = Asn1Utils.getIntegerFromAsn1(value);
userAuthType =
Asn1Utils.getIntegerFromAsn1(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.INTEGER));
break;
case KM_TAG_ROOT_OF_TRUST & KEYMASTER_TAG_TYPE_MASK:
rootOfTrust = new RootOfTrust(value);
rootOfTrust =
new RootOfTrust(ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.SEQUENCE));
break;
case KM_TAG_ATTESTATION_APPLICATION_ID & KEYMASTER_TAG_TYPE_MASK:
attestationApplicationId =
new AttestationApplicationId(
Asn1Utils.getAsn1EncodableFromBytes(Asn1Utils.getByteArrayFromAsn1(value)));
Asn1Utils.getAsn1EncodableFromBytes(
Asn1Utils.getByteArrayFromAsn1(
ASN1Util.getContextBaseUniversal(
entry, tag, true, BERTags.OCTET_STRING))));
break;
case KM_TAG_ATTESTATION_ID_BRAND & KEYMASTER_TAG_TYPE_MASK:
brand = getStringFromAsn1Value(value);
brand =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_DEVICE & KEYMASTER_TAG_TYPE_MASK:
device = getStringFromAsn1Value(value);
device =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_PRODUCT & KEYMASTER_TAG_TYPE_MASK:
product = getStringFromAsn1Value(value);
product =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_SERIAL & KEYMASTER_TAG_TYPE_MASK:
serialNumber = getStringFromAsn1Value(value);
serialNumber =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_IMEI & KEYMASTER_TAG_TYPE_MASK:
imei = getStringFromAsn1Value(value);
imei =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_MEID & KEYMASTER_TAG_TYPE_MASK:
meid = getStringFromAsn1Value(value);
meid =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_MANUFACTURER & KEYMASTER_TAG_TYPE_MASK:
manufacturer = getStringFromAsn1Value(value);
manufacturer =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ATTESTATION_ID_MODEL & KEYMASTER_TAG_TYPE_MASK:
model = getStringFromAsn1Value(value);
model =
getStringFromAsn1Value(
ASN1Util.getContextBaseUniversal(entry, tag, true, BERTags.OCTET_STRING));
break;
case KM_TAG_ALL_APPLICATIONS & KEYMASTER_TAG_TYPE_MASK:
allApplications = true;
Expand Down

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