1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.security.net.config; 18 19 import java.util.Arrays; 20 21 /** @hide */ 22 public final class Pin { 23 public final String digestAlgorithm; 24 public final byte[] digest; 25 26 private final int mHashCode; 27 Pin(String digestAlgorithm, byte[] digest)28 public Pin(String digestAlgorithm, byte[] digest) { 29 this.digestAlgorithm = digestAlgorithm; 30 this.digest = digest; 31 mHashCode = Arrays.hashCode(digest) ^ digestAlgorithm.hashCode(); 32 } 33 34 /** 35 * @hide 36 */ isSupportedDigestAlgorithm(String algorithm)37 public static boolean isSupportedDigestAlgorithm(String algorithm) { 38 // Currently only SHA-256 is supported. SHA-512 if/once Chromium networking stack 39 // supports it. 40 return "SHA-256".equalsIgnoreCase(algorithm); 41 } 42 43 /** 44 * @hide 45 */ getDigestLength(String algorithm)46 public static int getDigestLength(String algorithm) { 47 if ("SHA-256".equalsIgnoreCase(algorithm)) { 48 return 32; 49 } 50 throw new IllegalArgumentException("Unsupported digest algorithm: " + algorithm); 51 } 52 53 @Override hashCode()54 public int hashCode() { 55 return mHashCode; 56 } 57 58 @Override equals(Object obj)59 public boolean equals(Object obj) { 60 if (this == obj) { 61 return true; 62 } 63 if (!(obj instanceof Pin)) { 64 return false; 65 } 66 Pin other = (Pin) obj; 67 if (other.hashCode() != mHashCode) { 68 return false; 69 } 70 if (!Arrays.equals(digest, other.digest)) { 71 return false; 72 } 73 if (!digestAlgorithm.equals(other.digestAlgorithm)) { 74 return false; 75 } 76 return true; 77 } 78 } 79