HkdfStreamingPrf implements StreamingPrf { @Override public InputStream computePrf(final byte[] input) { return new HkdfInputStream(input); } HkdfStreamingPrf(final HashType hashType, final byte[] ikm, final byte[] salt); @Override InputStream computePrf(final byte[] input);  }
@Test public void testComputePrf_basic() throws Exception { HkdfStreamingPrf prf = new HkdfStreamingPrf(HashType.SHA1, "key0123456".getBytes(UTF_8), "salt".getBytes(UTF_8)); InputStream input = prf.computePrf("input".getBytes(UTF_8)); byte[] output = new byte[10]; assertThat(input.read(output)).isEqualTo(10); }
@Test public void testComputePrf_differentInputDifferentValues() throws Exception { HkdfStreamingPrf prf = new HkdfStreamingPrf(HashType.SHA1, "key0123456".getBytes(UTF_8), "salt".getBytes(UTF_8)); InputStream input = prf.computePrf("input".getBytes(UTF_8)); byte[] output = new byte[10]; assertThat(input.read(output)).isEqualTo(10); InputStream input2 = prf.computePrf("input2".getBytes(UTF_8)); byte[] output2 = new byte[10]; assertThat(input2.read(output2)).isEqualTo(10); assertThat(output).isNotEqualTo(output2); }
@Test public void testComputePrf_sameInputSameValue() throws Exception { HkdfStreamingPrf prf = new HkdfStreamingPrf(HashType.SHA1, "key0123456".getBytes(UTF_8), "salt".getBytes(UTF_8)); InputStream input = prf.computePrf("input".getBytes(UTF_8)); byte[] output = new byte[10]; assertThat(input.read(output)).isEqualTo(10); InputStream input2 = prf.computePrf("input".getBytes(UTF_8)); byte[] output2 = new byte[10]; assertThat(input2.read(output2)).isEqualTo(10); assertThat(output).isEqualTo(output2); }
@Test public void testComputePrf_sameInputDifferentInterfacesSameValue() throws Exception { HkdfStreamingPrf prf = new HkdfStreamingPrf(HashType.SHA1, "key0123456".getBytes(UTF_8), "salt".getBytes(UTF_8)); InputStream input = prf.computePrf("input".getBytes(UTF_8)); byte[] output = new byte[100]; assertThat(input.read(output)).isEqualTo(100); InputStream input2 = prf.computePrf("input".getBytes(UTF_8)); byte[] output2 = new byte[100]; output2[0] = (byte) input2.read(); output2[1] = (byte) input2.read(); assertThat(input2.read(output2, 2, 33)).isEqualTo(33); output2[35] = (byte) input2.read(); assertThat(input2.read(output2, 36, 64)).isEqualTo(64); assertThat(output).isEqualTo(output2); }
@Test public void testComputePrf_exhaustStream() throws Exception { HkdfStreamingPrf prf = new HkdfStreamingPrf(HashType.SHA512, "key0123456".getBytes(UTF_8), "salt".getBytes(UTF_8)); InputStream input = prf.computePrf("input".getBytes(UTF_8)); final int maxOutputLength = 255 * (512 / 8); byte[] output = new byte[maxOutputLength + 50]; assertThat(input.read(output)).isEqualTo(maxOutputLength); }
@Test public void testComputePrf_rfc589vector1() throws Exception { HashType hash = HashType.SHA256; byte[] ikm = Hex.decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"); byte[] salt = Hex.decode("000102030405060708090a0b0c"); byte[] info = Hex.decode("f0f1f2f3f4f5f6f7f8f9"); byte[] expectedResult = Hex.decode( "3cb25f25faacd57a90434f64d0362f2a" + "2d2d0a90cf1a5a4c5db02d56ecc4c5bf" + "34007208d5b887185865"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_rfc589vector2() throws Exception { HashType hash = HashType.SHA256; 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"); byte[] expectedResult = Hex.decode( "b11e398dc80327a1c8e7f78c596a4934" + "4f012eda2d4efad8a050cc4c19afa97c" + "59045a99cac7827271cb41c65e590e09" + "da3275600c2f09b8367793a9aca3db71" + "cc30c58179ec3e87c14c01d5c1f3434f" + "1d87"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_rfc589vector3() throws Exception { HashType hash = HashType.SHA256; byte[] ikm = Hex.decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"); byte[] salt = Hex.decode(""); byte[] info = Hex.decode(""); byte[] expectedResult = Hex.decode( "8da4e775a563c18f715f802a063c5a31" + "b8a11f5c5ee1879ec3454e5f3c738d2d" + "9d201395faa4b61a96c8"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_rfc589vector4() throws Exception { HashType hash = HashType.SHA1; byte[] ikm = Hex.decode("0b0b0b0b0b0b0b0b0b0b0b"); byte[] salt = Hex.decode("000102030405060708090a0b0c"); byte[] info = Hex.decode("f0f1f2f3f4f5f6f7f8f9"); byte[] expectedResult = Hex.decode( "085a01ea1b10f36933068b56efa5ad81" + "a4f14b822f5b091568a9cdd4f155fda2" + "c22e422478d305f3f896"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_rfc589vector5() throws Exception { HashType hash = HashType.SHA1; 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"); byte[] expectedResult = Hex.decode( "0bd770a74d1160f7c9f12cd5912a06eb" + "ff6adcae899d92191fe4305673ba2ffe" + "8fa3f1a4e5ad79f3f334b3b202b2173c" + "486ea37ce3d397ed034c7f9dfeb15c5e" + "927336d0441f4c4300e2cff0d0900b52" + "d3b4"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_rfc589vector6() throws Exception { HashType hash = HashType.SHA1; byte[] ikm = Hex.decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"); byte[] salt = Hex.decode(""); byte[] info = Hex.decode(""); byte[] expectedResult = Hex.decode( "0ac1af7002b3d761d1e55298da9d0506" + "b9ae52057220a306e07b6b87e8df21d0" + "ea00033de03984d34918"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_rfc589vector7() throws Exception { HashType hash = HashType.SHA1; byte[] ikm = Hex.decode("0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b"); byte[] salt = Hex.decode(""); byte[] info = Hex.decode(""); byte[] expectedResult = Hex.decode( "0ac1af7002b3d761d1e55298da9d0506" + "b9ae52057220a306e07b6b87e8df21d0" + "ea00033de03984d34918"); HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); byte[] output = new byte[expectedResult.length]; assertThat(input.read(output)).isEqualTo(expectedResult.length); assertThat(output).isEqualTo(expectedResult); }
@Test public void testComputePrf_compareToHkdfUtil() throws Exception { HashType hash = HashType.SHA1; byte[] ikm = Random.randBytes(123); byte[] salt = Random.randBytes(234); byte[] info = Random.randBytes(345); byte[] result = new byte[456]; HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); input.read(result); assertThat(Hkdf.computeHkdf("HmacSha1", ikm, salt, info, result.length)).isEqualTo(result); }
@Test public void testComputePrf_compareToHkdfUtilSha384() throws Exception { HashType hash = HashType.SHA384; byte[] ikm = Random.randBytes(123); byte[] salt = Random.randBytes(234); byte[] info = Random.randBytes(345); byte[] result = new byte[456]; HkdfStreamingPrf prf = new HkdfStreamingPrf(hash, ikm, salt); InputStream input = prf.computePrf(info); input.read(result); assertThat(Hkdf.computeHkdf("HmacSha384", ikm, salt, info, result.length)).isEqualTo(result); }