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/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds licenses this file
* to you 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 org.jclouds.crypto;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Predicates.notNull;
import static com.google.common.base.Throwables.propagate;
import static com.google.common.collect.Iterators.filter;
import static com.google.common.io.ByteStreams.limit;
import static com.google.common.io.ByteStreams.toByteArray;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.security.interfaces.RSAPrivateCrtKey;
import java.security.spec.KeySpec;
import java.security.spec.RSAPrivateCrtKeySpec;
import java.security.spec.RSAPublicKeySpec;
import java.util.Iterator;
import java.util.List;
import com.google.common.annotations.Beta;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableList.Builder;
import com.google.common.primitives.Bytes;
/**
*
* This codec is based on code from {@code bouncycastle.org}. It simplifies extraction of RSA keys from {@code ASN.1}
* encoding. This only parses the {@code BigInteger} elements needed to generate {@link KeySpec}
*
* @author Adrian Cole
*/
@Beta
final class ASN1Codec {
private ASN1Codec() {
};
@SuppressWarnings("unchecked")
static RSAPublicKeySpec decodeRSAPublicKey(byte[] bytes) {
List