java/src/test/java/com/google/crypto/tink/aead/AesEaxKeyManagerTest.java - third_party/tink - Git at Google

 // Copyright 2017 Google 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.crypto.tink.aead;

 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;

 import com.google.crypto.tink.Aead;
 import com.google.crypto.tink.TestUtil;
 import com.google.crypto.tink.proto.AesEaxKey;
 import com.google.crypto.tink.proto.AesEaxKeyFormat;
 import com.google.crypto.tink.proto.AesEaxParams;
 import com.google.crypto.tink.proto.KeyData.KeyMaterialType;
 import com.google.crypto.tink.subtle.AesEaxJce;
 import com.google.crypto.tink.subtle.Bytes;
 import com.google.crypto.tink.subtle.Random;
 import com.google.protobuf.ByteString;
 import java.security.GeneralSecurityException;
 import java.util.Set;
 import java.util.TreeSet;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;

 /** Test for AesEaxJce and its key manager. */
 @RunWith(JUnit4.class)
 public class AesEaxKeyManagerTest {
   private final AesEaxKeyManager manager = new AesEaxKeyManager();
   private final AesEaxKeyManager.KeyFactory<AesEaxKeyFormat, AesEaxKey> factory =
       manager.keyFactory();

   @Test
   public void basics() throws Exception {
     assertThat(manager.getKeyType()).isEqualTo("type.googleapis.com/google.crypto.tink.AesEaxKey");
     assertThat(manager.getVersion()).isEqualTo(0);
     assertThat(manager.keyMaterialType()).isEqualTo(KeyMaterialType.SYMMETRIC);
   }

   private static AesEaxKeyFormat createKeyFormat(int keySize, int ivSize) {
     return AesEaxKeyFormat.newBuilder()
         .setParams(AesEaxParams.newBuilder().setIvSize(ivSize))
         .setKeySize(keySize)
         .build();
   }

   @Test
   public void validateKeyFormat_empty() throws Exception {
     try {
       factory.validateKeyFormat(AesEaxKeyFormat.getDefaultInstance());
       fail();
     } catch (GeneralSecurityException e) {
       // expected.
     }
   }

   @Test
   public void validateKeyFormat_valid() throws Exception {
     factory.validateKeyFormat(createKeyFormat(16, 12));
     factory.validateKeyFormat(createKeyFormat(16, 16));
     factory.validateKeyFormat(createKeyFormat(32, 12));
     factory.validateKeyFormat(createKeyFormat(32, 16));
   }

   @Test
   public void validateKeyFormat_keySize() throws Exception {
     for (int len = 0; len < 200; ++len) {
       AesEaxKeyFormat format = createKeyFormat(len, 16);
       if (len == 16 || len == 32) {
         factory.validateKeyFormat(format);
       } else {
         try {
           factory.validateKeyFormat(format);
           fail();
         } catch (GeneralSecurityException e) {
           // expected
         }
       }
     }
   }

   @Test
   public void validateKeyFormat_ivSize() throws Exception {
     for (int ivSize = 0; ivSize < 200; ++ivSize) {
       AesEaxKeyFormat format = createKeyFormat(32, ivSize);
       if (ivSize == 12 || ivSize == 16) {
         factory.validateKeyFormat(format);
       } else {
         try {
           factory.validateKeyFormat(format);
           fail();
         } catch (GeneralSecurityException e) {
           // expected
         }
       }
     }
   }

   @Test
   public void createKey_checkValues() throws Exception {
     AesEaxKeyFormat format = createKeyFormat(32, 16);
     AesEaxKey key = factory.createKey(format);
     assertThat(key.getKeyValue()).hasSize(format.getKeySize());
     assertThat(key.getParams()).isEqualTo(format.getParams());
   }

   @Test
   public void createKey_checkValues_variant2() throws Exception {
     AesEaxKeyFormat format = createKeyFormat(16, 12);
     AesEaxKey key = factory.createKey(format);
     assertThat(key.getKeyValue()).hasSize(format.getKeySize());
     assertThat(key.getParams()).isEqualTo(format.getParams());
   }

   @Test
   public void createKey_multipleTimes() throws Exception {
     AesEaxKeyFormat format = createKeyFormat(32, 16);
     Set<String> keys = new TreeSet<>();
     // Calls newKey multiple times and make sure that they generate different keys.
     int numTests = 50;
     for (int i = 0; i < numTests; i++) {
       keys.add(TestUtil.hexEncode(factory.createKey(format).getKeyValue().toByteArray()));
     }
     assertThat(keys).hasSize(numTests);
   }

   @Test
   public void getPrimitive() throws Exception {
     AesEaxKey key = factory.createKey(createKeyFormat(32, 16));
     Aead managerAead = manager.getPrimitive(key, Aead.class);
     Aead directAead = new AesEaxJce(key.getKeyValue().toByteArray(), key.getParams().getIvSize());

     byte[] plaintext = Random.randBytes(20);
     byte[] associatedData = Random.randBytes(20);
     assertThat(directAead.decrypt(managerAead.encrypt(plaintext, associatedData), associatedData))
         .isEqualTo(plaintext);
   }

   private static class PublicTestVector {
     String name;
     public byte[] keyValue;
     public byte[] plaintext;
     public byte[] aad;
     public byte[] iv;
     public byte[] ciphertext;
     public byte[] tag;

     public PublicTestVector(
         String name,
         String keyValue,
         String plaintext,
         String aad,
         String iv,
         String ciphertext,
         String tag) {
       try {
         this.name = name;
         this.keyValue = TestUtil.hexDecode(keyValue);
         this.plaintext = TestUtil.hexDecode(plaintext);
         this.aad = TestUtil.hexDecode(aad);
         this.iv = TestUtil.hexDecode(iv);
         this.ciphertext = TestUtil.hexDecode(ciphertext);
         this.tag = TestUtil.hexDecode(tag);
       } catch (Exception ignored) {
         // Ignored
       }
     }
   }

   // Test vectors from
   // http://web.cs.ucdavis.edu/~rogaway/papers/eax.pdf.
   PublicTestVector[] publicTestVectors = {
     new PublicTestVector(
         "Test Case 1",
         "233952dee4d5ed5f9b9c6d6ff80ff478",
         "",
         "6bfb914fd07eae6b",
         "62ec67f9c3a4a407fcb2a8c49031a8b3",
         "",
         "e037830e8389f27b025a2d6527e79d01"),
     new PublicTestVector(
         "Test Case 2",
         "91945d3f4dcbee0bf45ef52255f095a4",
         "f7fb",
         "fa3bfd4806eb53fa",
         "becaf043b0a23d843194ba972c66debd",
         "19dd",
         "5c4c9331049d0bdab0277408f67967e5"),
     new PublicTestVector(
         "Test Case 3",
         "01f74ad64077f2e704c0f60ada3dd523",
         "1a47cb4933",
         "234a3463c1264ac6",
         "70c3db4f0d26368400a10ed05d2bff5e",
         "d851d5bae0",
         "3a59f238a23e39199dc9266626c40f80"),
     new PublicTestVector(
         "Test Case 4",
         "d07cf6cbb7f313bdde66b727afd3c5e8",
         "481c9e39b1",
         "33cce2eabff5a79d",
         "8408dfff3c1a2b1292dc199e46b7d617",
         "632a9d131a",
         "d4c168a4225d8e1ff755939974a7bede"),
     new PublicTestVector(
         "Test Case 5",
         "35b6d0580005bbc12b0587124557d2c2",
         "40d0c07da5e4",
         "aeb96eaebe2970e9",
         "fdb6b06676eedc5c61d74276e1f8e816",
         "071dfe16c675",
         "cb0677e536f73afe6a14b74ee49844dd"),
     new PublicTestVector(
         "Test Case 6",
         "bd8e6e11475e60b268784c38c62feb22",
         "4de3b35c3fc039245bd1fb7d",
         "d4482d1ca78dce0f",
         "6eac5c93072d8e8513f750935e46da1b",
         "835bb4f15d743e350e728414",
         "abb8644fd6ccb86947c5e10590210a4f"),
     new PublicTestVector(
         "Test Case 7",
         "7c77d6e813bed5ac98baa417477a2e7d",
         "8b0a79306c9ce7ed99dae4f87f8dd61636",
         "65d2017990d62528",
         "1a8c98dcd73d38393b2bf1569deefc19",
         "02083e3979da014812f59f11d52630da30",
         "137327d10649b0aa6e1c181db617d7f2"),
     new PublicTestVector(
         "Test Case 8",
         "5fff20cafab119ca2fc73549e20f5b0d",
         "1bda122bce8a8dbaf1877d962b8592dd2d56",
         "54b9f04e6a09189a",
         "dde59b97d722156d4d9aff2bc7559826",
         "2ec47b2c4954a489afc7ba4897edcdae8cc3",
         "3b60450599bd02c96382902aef7f832a"),
     new PublicTestVector(
         "Test Case 9",
         "a4a4782bcffd3ec5e7ef6d8c34a56123",
         "6cf36720872b8513f6eab1a8a44438d5ef11",
         "899a175897561d7e",
         "b781fcf2f75fa5a8de97a9ca48e522ec",
         "0de18fd0fdd91e7af19f1d8ee8733938b1e8",
         "e7f6d2231618102fdb7fe55ff1991700"),
     new PublicTestVector(
         "Test Case 10",
         "8395fcf1e95bebd697bd010bc766aac3",
         "ca40d7446e545ffaed3bd12a740a659ffbbb3ceab7",
         "126735fcc320d25a",
         "22e7add93cfc6393c57ec0b3c17d6b44",
         "cb8920f87a6c75cff39627b56e3ed197c552d295a7",
         "cfc46afc253b4652b1af3795b124ab6e"),
   };

   @Test
   public void testPublicTestVectors() throws Exception {
     for (PublicTestVector t : publicTestVectors) {
       if (TestUtil.shouldSkipTestWithAesKeySize(t.keyValue.length)) {
         continue;
       }
       AesEaxKey key =
           AesEaxKey.newBuilder()
               .setKeyValue(ByteString.copyFrom(t.keyValue))
               .setParams(AesEaxParams.newBuilder().setIvSize(t.iv.length))
               .build();
       Aead aead = manager.getPrimitive(key, Aead.class);
       try {
         byte[] ciphertext = Bytes.concat(t.iv, t.ciphertext, t.tag);
         byte[] plaintext = aead.decrypt(ciphertext, t.aad);
         assertArrayEquals(plaintext, t.plaintext);
       } catch (GeneralSecurityException e) {
         fail("Should not fail at " + t.name + ", but thrown exception " + e);
       }
     }
   }

   @Test
   public void testCiphertextSize() throws Exception {
     AesEaxKey key = factory.createKey(createKeyFormat(32, 16));
     Aead aead = manager.getPrimitive(key, Aead.class);
     byte[] plaintext = "plaintext".getBytes("UTF-8");
     byte[] associatedData = "associatedData".getBytes("UTF-8");
     byte[] ciphertext = aead.encrypt(plaintext, associatedData);
     assertEquals(16 /* IV_SIZE */ + plaintext.length + 16 /* TAG_SIZE */, ciphertext.length);
   }
 }
	// Copyright 2017 Google 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.crypto.tink.aead;

	import static com.google.common.truth.Truth.assertThat;
	import static org.junit.Assert.assertArrayEquals;
	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.fail;

	import com.google.crypto.tink.Aead;
	import com.google.crypto.tink.TestUtil;
	import com.google.crypto.tink.proto.AesEaxKey;
	import com.google.crypto.tink.proto.AesEaxKeyFormat;
	import com.google.crypto.tink.proto.AesEaxParams;
	import com.google.crypto.tink.proto.KeyData.KeyMaterialType;
	import com.google.crypto.tink.subtle.AesEaxJce;
	import com.google.crypto.tink.subtle.Bytes;
	import com.google.crypto.tink.subtle.Random;
	import com.google.protobuf.ByteString;
	import java.security.GeneralSecurityException;
	import java.util.Set;
	import java.util.TreeSet;
	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.junit.runners.JUnit4;

	/** Test for AesEaxJce and its key manager. */
	@RunWith(JUnit4.class)
	public class AesEaxKeyManagerTest {
	private final AesEaxKeyManager manager = new AesEaxKeyManager();
	private final AesEaxKeyManager.KeyFactory<AesEaxKeyFormat, AesEaxKey> factory =
	manager.keyFactory();

	@Test
	public void basics() throws Exception {
	assertThat(manager.getKeyType()).isEqualTo("type.googleapis.com/google.crypto.tink.AesEaxKey");
	assertThat(manager.getVersion()).isEqualTo(0);
	assertThat(manager.keyMaterialType()).isEqualTo(KeyMaterialType.SYMMETRIC);
	}

	private static AesEaxKeyFormat createKeyFormat(int keySize, int ivSize) {
	return AesEaxKeyFormat.newBuilder()
	.setParams(AesEaxParams.newBuilder().setIvSize(ivSize))
	.setKeySize(keySize)
	.build();
	}

	@Test
	public void validateKeyFormat_empty() throws Exception {
	try {
	factory.validateKeyFormat(AesEaxKeyFormat.getDefaultInstance());
	fail();
	} catch (GeneralSecurityException e) {
	// expected.
	}
	}

	@Test
	public void validateKeyFormat_valid() throws Exception {
	factory.validateKeyFormat(createKeyFormat(16, 12));
	factory.validateKeyFormat(createKeyFormat(16, 16));
	factory.validateKeyFormat(createKeyFormat(32, 12));
	factory.validateKeyFormat(createKeyFormat(32, 16));
	}

	@Test
	public void validateKeyFormat_keySize() throws Exception {
	for (int len = 0; len < 200; ++len) {
	AesEaxKeyFormat format = createKeyFormat(len, 16);
	if (len == 16 \|\| len == 32) {
	factory.validateKeyFormat(format);
	} else {
	try {
	factory.validateKeyFormat(format);
	fail();
	} catch (GeneralSecurityException e) {
	// expected
	}
	}
	}
	}

	@Test
	public void validateKeyFormat_ivSize() throws Exception {
	for (int ivSize = 0; ivSize < 200; ++ivSize) {
	AesEaxKeyFormat format = createKeyFormat(32, ivSize);
	if (ivSize == 12 \|\| ivSize == 16) {
	factory.validateKeyFormat(format);
	} else {
	try {
	factory.validateKeyFormat(format);
	fail();
	} catch (GeneralSecurityException e) {
	// expected
	}
	}
	}
	}

	@Test
	public void createKey_checkValues() throws Exception {
	AesEaxKeyFormat format = createKeyFormat(32, 16);
	AesEaxKey key = factory.createKey(format);
	assertThat(key.getKeyValue()).hasSize(format.getKeySize());
	assertThat(key.getParams()).isEqualTo(format.getParams());
	}

	@Test
	public void createKey_checkValues_variant2() throws Exception {
	AesEaxKeyFormat format = createKeyFormat(16, 12);
	AesEaxKey key = factory.createKey(format);
	assertThat(key.getKeyValue()).hasSize(format.getKeySize());
	assertThat(key.getParams()).isEqualTo(format.getParams());
	}

	@Test
	public void createKey_multipleTimes() throws Exception {
	AesEaxKeyFormat format = createKeyFormat(32, 16);
	Set<String> keys = new TreeSet<>();
	// Calls newKey multiple times and make sure that they generate different keys.
	int numTests = 50;
	for (int i = 0; i < numTests; i++) {
	keys.add(TestUtil.hexEncode(factory.createKey(format).getKeyValue().toByteArray()));
	}
	assertThat(keys).hasSize(numTests);
	}

	@Test
	public void getPrimitive() throws Exception {
	AesEaxKey key = factory.createKey(createKeyFormat(32, 16));
	Aead managerAead = manager.getPrimitive(key, Aead.class);
	Aead directAead = new AesEaxJce(key.getKeyValue().toByteArray(), key.getParams().getIvSize());

	byte[] plaintext = Random.randBytes(20);
	byte[] associatedData = Random.randBytes(20);
	assertThat(directAead.decrypt(managerAead.encrypt(plaintext, associatedData), associatedData))
	.isEqualTo(plaintext);
	}

	private static class PublicTestVector {
	String name;
	public byte[] keyValue;
	public byte[] plaintext;
	public byte[] aad;
	public byte[] iv;
	public byte[] ciphertext;
	public byte[] tag;

	public PublicTestVector(
	String name,
	String keyValue,
	String plaintext,
	String aad,
	String iv,
	String ciphertext,
	String tag) {
	try {
	this.name = name;
	this.keyValue = TestUtil.hexDecode(keyValue);
	this.plaintext = TestUtil.hexDecode(plaintext);
	this.aad = TestUtil.hexDecode(aad);
	this.iv = TestUtil.hexDecode(iv);
	this.ciphertext = TestUtil.hexDecode(ciphertext);
	this.tag = TestUtil.hexDecode(tag);
	} catch (Exception ignored) {
	// Ignored
	}
	}
	}

	// Test vectors from
	// http://web.cs.ucdavis.edu/~rogaway/papers/eax.pdf.
	PublicTestVector[] publicTestVectors = {
	new PublicTestVector(
	"Test Case 1",
	"233952dee4d5ed5f9b9c6d6ff80ff478",
	"",
	"6bfb914fd07eae6b",
	"62ec67f9c3a4a407fcb2a8c49031a8b3",
	"",
	"e037830e8389f27b025a2d6527e79d01"),
	new PublicTestVector(
	"Test Case 2",
	"91945d3f4dcbee0bf45ef52255f095a4",
	"f7fb",
	"fa3bfd4806eb53fa",
	"becaf043b0a23d843194ba972c66debd",
	"19dd",
	"5c4c9331049d0bdab0277408f67967e5"),
	new PublicTestVector(
	"Test Case 3",
	"01f74ad64077f2e704c0f60ada3dd523",
	"1a47cb4933",
	"234a3463c1264ac6",
	"70c3db4f0d26368400a10ed05d2bff5e",
	"d851d5bae0",
	"3a59f238a23e39199dc9266626c40f80"),
	new PublicTestVector(
	"Test Case 4",
	"d07cf6cbb7f313bdde66b727afd3c5e8",
	"481c9e39b1",
	"33cce2eabff5a79d",
	"8408dfff3c1a2b1292dc199e46b7d617",
	"632a9d131a",
	"d4c168a4225d8e1ff755939974a7bede"),
	new PublicTestVector(
	"Test Case 5",
	"35b6d0580005bbc12b0587124557d2c2",
	"40d0c07da5e4",
	"aeb96eaebe2970e9",
	"fdb6b06676eedc5c61d74276e1f8e816",
	"071dfe16c675",
	"cb0677e536f73afe6a14b74ee49844dd"),
	new PublicTestVector(
	"Test Case 6",
	"bd8e6e11475e60b268784c38c62feb22",
	"4de3b35c3fc039245bd1fb7d",
	"d4482d1ca78dce0f",
	"6eac5c93072d8e8513f750935e46da1b",
	"835bb4f15d743e350e728414",
	"abb8644fd6ccb86947c5e10590210a4f"),
	new PublicTestVector(
	"Test Case 7",
	"7c77d6e813bed5ac98baa417477a2e7d",
	"8b0a79306c9ce7ed99dae4f87f8dd61636",
	"65d2017990d62528",
	"1a8c98dcd73d38393b2bf1569deefc19",
	"02083e3979da014812f59f11d52630da30",
	"137327d10649b0aa6e1c181db617d7f2"),
	new PublicTestVector(
	"Test Case 8",
	"5fff20cafab119ca2fc73549e20f5b0d",
	"1bda122bce8a8dbaf1877d962b8592dd2d56",
	"54b9f04e6a09189a",
	"dde59b97d722156d4d9aff2bc7559826",
	"2ec47b2c4954a489afc7ba4897edcdae8cc3",
	"3b60450599bd02c96382902aef7f832a"),
	new PublicTestVector(
	"Test Case 9",
	"a4a4782bcffd3ec5e7ef6d8c34a56123",
	"6cf36720872b8513f6eab1a8a44438d5ef11",
	"899a175897561d7e",
	"b781fcf2f75fa5a8de97a9ca48e522ec",
	"0de18fd0fdd91e7af19f1d8ee8733938b1e8",
	"e7f6d2231618102fdb7fe55ff1991700"),
	new PublicTestVector(
	"Test Case 10",
	"8395fcf1e95bebd697bd010bc766aac3",
	"ca40d7446e545ffaed3bd12a740a659ffbbb3ceab7",
	"126735fcc320d25a",
	"22e7add93cfc6393c57ec0b3c17d6b44",
	"cb8920f87a6c75cff39627b56e3ed197c552d295a7",
	"cfc46afc253b4652b1af3795b124ab6e"),
	};

	@Test
	public void testPublicTestVectors() throws Exception {
	for (PublicTestVector t : publicTestVectors) {
	if (TestUtil.shouldSkipTestWithAesKeySize(t.keyValue.length)) {
	continue;
	}
	AesEaxKey key =
	AesEaxKey.newBuilder()
	.setKeyValue(ByteString.copyFrom(t.keyValue))
	.setParams(AesEaxParams.newBuilder().setIvSize(t.iv.length))
	.build();
	Aead aead = manager.getPrimitive(key, Aead.class);
	try {
	byte[] ciphertext = Bytes.concat(t.iv, t.ciphertext, t.tag);
	byte[] plaintext = aead.decrypt(ciphertext, t.aad);
	assertArrayEquals(plaintext, t.plaintext);
	} catch (GeneralSecurityException e) {
	fail("Should not fail at " + t.name + ", but thrown exception " + e);
	}
	}
	}

	@Test
	public void testCiphertextSize() throws Exception {
	AesEaxKey key = factory.createKey(createKeyFormat(32, 16));
	Aead aead = manager.getPrimitive(key, Aead.class);
	byte[] plaintext = "plaintext".getBytes("UTF-8");
	byte[] associatedData = "associatedData".getBytes("UTF-8");
	byte[] ciphertext = aead.encrypt(plaintext, associatedData);
	assertEquals(16 /* IV_SIZE / + plaintext.length + 16 / TAG_SIZE */, ciphertext.length);
	}
	}