1561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes/* 2561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Licensed to the Apache Software Foundation (ASF) under one or more 3561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * contributor license agreements. See the NOTICE file distributed with 4561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * this work for additional information regarding copyright ownership. 5561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * The ASF licenses this file to You under the Apache License, Version 2.0 6561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * (the "License"); you may not use this file except in compliance with 7561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * the License. You may obtain a copy of the License at 8561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * 9561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 10561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * 11561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Unless required by applicable law or agreed to in writing, software 12561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 13561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * See the License for the specific language governing permissions and 15561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * limitations under the License. 16561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 17561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 18561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes/** 198d8858e39800de641b50f6e8e864af9cf68bedeaNarayan Kamath * @author Stepan M. Mishura 208d8858e39800de641b50f6e8e864af9cf68bedeaNarayan Kamath */ 21561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 22561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughespackage org.apache.harmony.security.tests.asn1.der; 23561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 24561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.io.ByteArrayInputStream; 25561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.io.IOException; 26561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.math.BigInteger; 27561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport java.util.Arrays; 28561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 29561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport junit.framework.TestCase; 30561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 31561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport org.apache.harmony.security.asn1.ASN1Exception; 32561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport org.apache.harmony.security.asn1.ASN1Integer; 33561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport org.apache.harmony.security.asn1.DerInputStream; 34561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughesimport org.apache.harmony.security.asn1.DerOutputStream; 35561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 36561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 37561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes/** 38561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * ASN.1 DER test for INTEGER type 39e98fbf8686c5289bf03fe5c3de7ff82d3a77104dElliott Hughes * 40561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * @see http://asn1.elibel.tm.fr/en/standards/index.htm 41561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 42561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 43561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughespublic class IntegerTest extends TestCase { 44561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 45561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public static final Object[][] validTestcase = { 46561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // BigInteger / two's-complement representation / encoding 47561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("0"), null, null }, 48561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("1"), null, null }, 49561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("-1"), null, null }, 50561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("127"), null, null }, 51561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("-127"), null, null }, 52561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("128"), null, null }, 53561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("-128"), null, null }, 54561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("32767"), null, null }, 55561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("-32767"), null, null }, 56561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("32768"), null, null }, 57561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("-32768"), null, null }, 58561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("1234567890"), null, null }, 59561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { new BigInteger("-1234567890"), null, null }, 60561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes { // 20 octets 61561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes new BigInteger(new byte[] { 0x7F, 0x00, 0x00, 0x00, 0x00, 62561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 63561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }), null, 64561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes null }, }; 65561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 66561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes static { 67561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int i = 0; i < validTestcase.length; i++) { 68561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // get two's-complement representation 69561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes byte[] array = ((BigInteger) validTestcase[i][0]).toByteArray(); 70561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 71561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // create encoding 72561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes byte[] encoded = new byte[array.length + 2]; 73561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes encoded[0] = 0x02; 74561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes encoded[1] = (byte) (encoded.length - 2); 75561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes System.arraycopy(array, 0, encoded, 2, encoded[1]); 76561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 77561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // assign is to testcases 78561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes validTestcase[i][1] = array; 79561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes validTestcase[i][2] = encoded; 80561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 81561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 82561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 83561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes /** 84561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Tests decoding/encoding integers to/from byte array 85561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 86561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void testDecode_Encode() throws IOException { 87561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 88561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // oid decoder/encoder for testing 89561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes ASN1Integer asn1 = ASN1Integer.getInstance(); 90561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 91561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // decode from byte array 92561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int i = 0; i < validTestcase.length; i++) { 93561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes DerInputStream in = new DerInputStream((byte[]) validTestcase[i][2]); 94561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes assertTrue((validTestcase[i][0]).toString(), // message 95561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Arrays.equals((byte[]) validTestcase[i][1], // expected 96561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes (byte[]) asn1.decode(in))); // returned 97561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 98e98fbf8686c5289bf03fe5c3de7ff82d3a77104dElliott Hughes 99561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // decode from input stream 100561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int i = 0; i < validTestcase.length; i++) { 101561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes DerInputStream in = new DerInputStream(new ByteArrayInputStream( 102561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes (byte[]) validTestcase[i][2])); 103561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes assertTrue((validTestcase[i][0]).toString(), //message 104561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Arrays.equals((byte[]) validTestcase[i][1], //expected 105561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes (byte[]) asn1.decode(in))); //returned 106561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 107561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 108561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // encoding 109561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int i = 0; i < validTestcase.length; i++) { 110561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes DerOutputStream out = new DerOutputStream(asn1, validTestcase[i][1]); 111561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes assertTrue((validTestcase[i][0]).toString(), //message 112561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes Arrays.equals((byte[]) validTestcase[i][2], //expected 113561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes out.encoded));//returned 114561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 115561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 116561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 117561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes /** 118561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes * Tests invalid ASN.1 integer encodings 119561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes */ 120561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void testDecode_Invalid() throws IOException { 121561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes byte[][] invalid = new byte[][] { 1228d8858e39800de641b50f6e8e864af9cf68bedeaNarayan Kamath // wrong tag: tag is not 0x02 123561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes new byte[] { 0x01, 0x01, 0x00 }, 124561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes // wrong length: length is 0 125561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes new byte[] { 0x02, 0x00 }, 126e98fbf8686c5289bf03fe5c3de7ff82d3a77104dElliott Hughes // wrong content: is not encoded in minimum number of octets 127561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes new byte[] { 0x02, 0x02, 0x00, 0x00 }, 128e98fbf8686c5289bf03fe5c3de7ff82d3a77104dElliott Hughes // wrong content: is not encoded in minimum number of octets 129561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes new byte[] { 0x02, 0x02, (byte) 0xFF, (byte) 0x80 } }; 130561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 131561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int i = 0; i < invalid.length; i++) { 132561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes try { 133561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes DerInputStream in = new DerInputStream(invalid[i]); 134561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes ASN1Integer.getInstance().decode(in); 135561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes fail("No expected ASN1Exception for:" + i); 136561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } catch (ASN1Exception e) { 137561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 138561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 139561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 140561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 141561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes public void testConversion() { 142561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes int[] testcase = new int[] { 0, 1, -1, 127, -127, 128, -128, 32767, 143561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes -32768, Integer.MAX_VALUE, Integer.MIN_VALUE }; 144561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes 145561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes for (int i = 0; i < testcase.length; i++) { 146561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes assertEquals("Testcase: " + i, testcase[i], ASN1Integer 147561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes .toIntValue(ASN1Integer.fromIntValue(testcase[i]))); 148561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 149561ee011997c6c2f1befbfaa9d5f0a99771c1d63Elliott Hughes } 150e98fbf8686c5289bf03fe5c3de7ff82d3a77104dElliott Hughes} 151