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/* Copyright 2019, The Android Open Source Project, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.android.attestation;
import org.bouncycastle.asn1.ASN1Boolean;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Enumerated;
import org.bouncycastle.asn1.ASN1Integer;
/** Utils to get java representation of ASN1 types. */
class ASN1Parsing {
static boolean getBooleanFromAsn1(ASN1Encodable asn1Value) {
if (asn1Value instanceof ASN1Boolean) {
return ((ASN1Boolean) asn1Value).isTrue();
} else {
throw new IllegalArgumentException(
"Boolean value expected; found " + asn1Value.getClass().getName() + " instead.");
}
}
static int getIntegerFromAsn1(ASN1Encodable asn1Value) {
if (asn1Value instanceof ASN1Integer) {
return ((ASN1Integer) asn1Value).getValue().intValueExact();
} else if (asn1Value instanceof ASN1Enumerated) {
return ((ASN1Enumerated) asn1Value).getValue().intValueExact();
} else {
throw new IllegalArgumentException(
"Integer value expected; found " + asn1Value.getClass().getName() + " instead.");
}
}
}
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