diff options
Diffstat (limited to 'libraries/spongycastle/core/src/test/java/org/spongycastle/crypto/test/MGF1GeneratorTest.java')
-rw-r--r-- | libraries/spongycastle/core/src/test/java/org/spongycastle/crypto/test/MGF1GeneratorTest.java | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/test/java/org/spongycastle/crypto/test/MGF1GeneratorTest.java b/libraries/spongycastle/core/src/test/java/org/spongycastle/crypto/test/MGF1GeneratorTest.java new file mode 100644 index 000000000..0c7a2fec9 --- /dev/null +++ b/libraries/spongycastle/core/src/test/java/org/spongycastle/crypto/test/MGF1GeneratorTest.java @@ -0,0 +1,88 @@ +package org.spongycastle.crypto.test; + +import org.spongycastle.crypto.DataLengthException; +import org.spongycastle.crypto.DerivationFunction; +import org.spongycastle.crypto.digests.SHA1Digest; +import org.spongycastle.crypto.digests.SHA256Digest; +import org.spongycastle.crypto.digests.ShortenedDigest; +import org.spongycastle.crypto.generators.MGF1BytesGenerator; +import org.spongycastle.crypto.params.MGFParameters; +import org.spongycastle.util.encoders.Hex; +import org.spongycastle.util.test.SimpleTest; + +/** + * MGF1 tests - vectors from ISO 18033 for KDF1 (equivalent). + */ +public class MGF1GeneratorTest + extends SimpleTest +{ + private byte[] seed1 = Hex.decode("d6e168c5f256a2dcff7ef12facd390f393c7a88d"); + private byte[] mask1 = Hex.decode( + "0742ba966813af75536bb6149cc44fc256fd6406df79665bc31dc5" + + "a62f70535e52c53015b9d37d412ff3c1193439599e1b628774c50d9c" + + "cb78d82c425e4521ee47b8c36a4bcffe8b8112a89312fc04420a39de" + + "99223890e74ce10378bc515a212b97b8a6447ba6a8870278"); + + private byte[] seed2 = Hex.decode( + "032e45326fa859a72ec235acff929b15d1372e30b207255f0611b8f785d7643741" + + "52e0ac009e509e7ba30cd2f1778e113b64e135cf4e2292c75efe5288edfda4"); + private byte[] mask2 = Hex.decode( + "5f8de105b5e96b2e490ddecbd147dd1def7e3b8e0e6a26eb7b956ccb8b3bdc1ca9" + + "75bc57c3989e8fbad31a224655d800c46954840ff32052cdf0d640562bdfadfa263c" + + "fccf3c52b29f2af4a1869959bc77f854cf15bd7a25192985a842dbff8e13efee5b7e" + + "7e55bbe4d389647c686a9a9ab3fb889b2d7767d3837eea4e0a2f04"); + + private byte[] seed3 = seed2; + private byte[] mask3= Hex.decode( + "09e2decf2a6e1666c2f6071ff4298305e2643fd510a2403db42a8743cb989de86e" + + "668d168cbe604611ac179f819a3d18412e9eb45668f2923c087c12fee0c5a0d2a8aa" + + "70185401fbbd99379ec76c663e875a60b4aacb1319fa11c3365a8b79a44669f26fb5" + + "55c80391847b05eca1cb5cf8c2d531448d33fbaca19f6410ee1fcb"); + + public void performTest() + { + checkMask(1, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed1, mask1); + checkMask(2, new MGF1BytesGenerator(new SHA1Digest()), seed2, mask2); + checkMask(3, new MGF1BytesGenerator(new ShortenedDigest(new SHA256Digest(), 20)), seed3, mask3); + + try + { + new MGF1BytesGenerator(new SHA1Digest()).generateBytes(new byte[10], 0, 20); + + fail("short input array not caught"); + } + catch (DataLengthException e) + { + // expected + } + } + + private void checkMask( + int count, + DerivationFunction kdf, + byte[] seed, + byte[] result) + { + byte[] data = new byte[result.length]; + + kdf.init(new MGFParameters(seed)); + + kdf.generateBytes(data, 0, data.length); + + if (!areEqual(result, data)) + { + fail("MGF1 failed generator test " + count); + } + } + + public String getName() + { + return "MGF1"; + } + + public static void main( + String[] args) + { + runTest(new MGF1GeneratorTest()); + } +} |