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diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/test/HKDFGeneratorTest.java b/bcprov/src/main/java/org/bouncycastle/crypto/test/HKDFGeneratorTest.java
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+package org.bouncycastle.crypto.test;
+
+import org.bouncycastle.crypto.Digest;
+import org.bouncycastle.crypto.digests.SHA1Digest;
+import org.bouncycastle.crypto.digests.SHA256Digest;
+import org.bouncycastle.crypto.generators.HKDFBytesGenerator;
+import org.bouncycastle.crypto.params.HKDFParameters;
+import org.bouncycastle.util.encoders.Hex;
+import org.bouncycastle.util.test.SimpleTest;
+
+/**
+ * HKDF tests - vectors from RFC 5869, + 2 more, 101 and 102
+ */
+public class HKDFGeneratorTest
+ extends SimpleTest
+{
+
+ public HKDFGeneratorTest()
+ {
+ }
+
+ private void compareOKM(int test, byte[] calculatedOKM, byte[] testOKM)
+ {
+
+ if (!areEqual(calculatedOKM, testOKM))
+ {
+ fail("HKDF failed generator test " + test);
+ }
+ }
+
+ public void performTest()
+ {
+ {
+ // === A.1. Test Case 1 - Basic test case with SHA-256 ===
+
+ Digest hash = new SHA256Digest();
+ byte[] ikm = Hex
+ .decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b");
+ byte[] salt = Hex.decode("000102030405060708090a0b0c");
+ byte[] info = Hex.decode("f0f1f2f3f4f5f6f7f8f9");
+ int l = 42;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(1, okm, Hex.decode(
+ "3cb25f25faacd57a90434f64d0362f2a" +
+ "2d2d0a90cf1a5a4c5db02d56ecc4c5bf" +
+ "34007208d5b887185865"));
+ }
+
+ // === A.2. Test Case 2 - Test with SHA-256 and longer inputs/outputs
+ // ===
+ {
+ Digest hash = new SHA256Digest();
+ byte[] ikm = Hex.decode("000102030405060708090a0b0c0d0e0f"
+ + "101112131415161718191a1b1c1d1e1f"
+ + "202122232425262728292a2b2c2d2e2f"
+ + "303132333435363738393a3b3c3d3e3f"
+ + "404142434445464748494a4b4c4d4e4f");
+ byte[] salt = Hex.decode("606162636465666768696a6b6c6d6e6f"
+ + "707172737475767778797a7b7c7d7e7f"
+ + "808182838485868788898a8b8c8d8e8f"
+ + "909192939495969798999a9b9c9d9e9f"
+ + "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf");
+ byte[] info = Hex.decode("b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
+ + "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
+ + "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
+ + "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
+ + "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff");
+ int l = 82;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(2, okm, Hex.decode(
+ "b11e398dc80327a1c8e7f78c596a4934" +
+ "4f012eda2d4efad8a050cc4c19afa97c" +
+ "59045a99cac7827271cb41c65e590e09" +
+ "da3275600c2f09b8367793a9aca3db71" +
+ "cc30c58179ec3e87c14c01d5c1f3434f" +
+ "1d87"));
+ }
+
+ {
+ // === A.3. Test Case 3 - Test with SHA-256 and zero-length
+ // salt/info ===
+
+ // setting salt to an empty byte array means that the salt is set to
+ // HashLen zero valued bytes
+ // setting info to null generates an empty byte array as info
+ // structure
+
+ Digest hash = new SHA256Digest();
+ byte[] ikm = Hex
+ .decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b");
+ byte[] salt = new byte[0];
+ byte[] info = null;
+ int l = 42;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(3, okm, Hex.decode(
+ "8da4e775a563c18f715f802a063c5a31" +
+ "b8a11f5c5ee1879ec3454e5f3c738d2d" +
+ "9d201395faa4b61a96c8"));
+ }
+
+ {
+ // === A.4. Test Case 4 - Basic test case with SHA-1 ===
+
+ Digest hash = new SHA1Digest();
+ byte[] ikm = Hex.decode("0b0b0b0b0b0b0b0b0b0b0b");
+ byte[] salt = Hex.decode("000102030405060708090a0b0c");
+ byte[] info = Hex.decode("f0f1f2f3f4f5f6f7f8f9");
+ int l = 42;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(4, okm, Hex.decode(
+ "085a01ea1b10f36933068b56efa5ad81" +
+ "a4f14b822f5b091568a9cdd4f155fda2" +
+ "c22e422478d305f3f896"));
+ }
+
+ // === A.5. Test Case 5 - Test with SHA-1 and longer inputs/outputs ===
+ {
+ Digest hash = new SHA1Digest();
+ byte[] ikm = Hex.decode("000102030405060708090a0b0c0d0e0f"
+ + "101112131415161718191a1b1c1d1e1f"
+ + "202122232425262728292a2b2c2d2e2f"
+ + "303132333435363738393a3b3c3d3e3f"
+ + "404142434445464748494a4b4c4d4e4f");
+ byte[] salt = Hex.decode("606162636465666768696a6b6c6d6e6f"
+ + "707172737475767778797a7b7c7d7e7f"
+ + "808182838485868788898a8b8c8d8e8f"
+ + "909192939495969798999a9b9c9d9e9f"
+ + "a0a1a2a3a4a5a6a7a8a9aaabacadaeaf");
+ byte[] info = Hex.decode("b0b1b2b3b4b5b6b7b8b9babbbcbdbebf"
+ + "c0c1c2c3c4c5c6c7c8c9cacbcccdcecf"
+ + "d0d1d2d3d4d5d6d7d8d9dadbdcdddedf"
+ + "e0e1e2e3e4e5e6e7e8e9eaebecedeeef"
+ + "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff");
+ int l = 82;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(5, okm, Hex.decode(
+ "0bd770a74d1160f7c9f12cd5912a06eb" +
+ "ff6adcae899d92191fe4305673ba2ffe" +
+ "8fa3f1a4e5ad79f3f334b3b202b2173c" +
+ "486ea37ce3d397ed034c7f9dfeb15c5e" +
+ "927336d0441f4c4300e2cff0d0900b52" +
+ "d3b4"));
+ }
+
+ {
+ // === A.6. Test Case 6 - Test with SHA-1 and zero-length salt/info
+ // ===
+
+ // setting salt to null should generate a new salt of HashLen zero
+ // valued bytes
+
+ Digest hash = new SHA1Digest();
+ byte[] ikm = Hex
+ .decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b");
+ byte[] salt = null;
+ byte[] info = new byte[0];
+ int l = 42;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(6, okm, Hex.decode(
+ "0ac1af7002b3d761d1e55298da9d0506" +
+ "b9ae52057220a306e07b6b87e8df21d0" +
+ "ea00033de03984d34918"));
+ }
+
+ {
+ // === A.7. Test Case 7 - Test with SHA-1, salt not provided,
+ // zero-length info ===
+ // (salt defaults to HashLen zero octets)
+
+ // this test is identical to test 6 in all ways bar the IKM value
+
+ Digest hash = new SHA1Digest();
+ byte[] ikm = Hex
+ .decode("0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c0c");
+ byte[] salt = null;
+ byte[] info = new byte[0];
+ int l = 42;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = new HKDFParameters(ikm, salt, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(7, okm, Hex.decode(
+ "2c91117204d745f3500d636a62f64f0a" +
+ "b3bae548aa53d423b0d1f27ebba6f5e5" +
+ "673a081d70cce7acfc48"));
+ }
+
+ {
+ // === A.101. Additional Test Case - Test with SHA-1, skipping extract
+ // zero-length info ===
+ // (salt defaults to HashLen zero octets)
+
+ // this test is identical to test 7 in all ways bar the IKM value
+ // which is set to the PRK value
+
+ Digest hash = new SHA1Digest();
+ byte[] ikm = Hex
+ .decode("2adccada18779e7c2077ad2eb19d3f3e731385dd");
+ byte[] info = new byte[0];
+ int l = 42;
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = HKDFParameters.skipExtractParameters(ikm, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ compareOKM(101, okm, Hex.decode(
+ "2c91117204d745f3500d636a62f64f0a" +
+ "b3bae548aa53d423b0d1f27ebba6f5e5" +
+ "673a081d70cce7acfc48"));
+ }
+
+ // === A.102. Additional Test Case - Test with SHA-1, maximum output ===
+ // (salt defaults to HashLen zero octets)
+
+ // this test is identical to test 7 in all ways bar the IKM value
+
+ Digest hash = new SHA1Digest();
+ byte[] ikm = Hex
+ .decode("2adccada18779e7c2077ad2eb19d3f3e731385dd");
+ byte[] info = new byte[0];
+ int l = 255 * hash.getDigestSize();
+ byte[] okm = new byte[l];
+
+ HKDFParameters params = HKDFParameters.skipExtractParameters(ikm, info);
+
+ HKDFBytesGenerator hkdf = new HKDFBytesGenerator(hash);
+ hkdf.init(params);
+ hkdf.generateBytes(okm, 0, l);
+
+ int zeros = 0;
+ for (int i = 0; i < hash.getDigestSize(); i++)
+ {
+ if (okm[i] == 0)
+ {
+ zeros++;
+ }
+ }
+
+ if (zeros == hash.getDigestSize())
+ {
+ fail("HKDF failed generator test " + 102);
+ }
+ }
+
+ public String getName()
+ {
+ return "HKDF";
+ }
+
+ public static void main(
+ String[] args)
+ {
+ runTest(new HKDFGeneratorTest());
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-04 07:58:04 +0000