using System;

using NUnit.Framework;

using Org.BouncyCastle.Crypto.Digests;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Crypto.Signers;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities.Encoders;
using Org.BouncyCastle.Utilities.Test;

namespace Org.BouncyCastle.Crypto.Tests
{
	/*
	* RSA PSS test vectors for PKCS#1 V2.1 with blinding
	*/
	[TestFixture]
	public class PssBlindTest
		: SimpleTest
	{
		private readonly int DATA_LENGTH = 1000;
		private readonly int NUM_TESTS = 50;
		private readonly int NUM_TESTS_WITH_KEY_GENERATION = 10;

		private class FixedRandom
			: SecureRandom
		{
			private readonly byte[] vals;

			public FixedRandom(
				byte[] vals)
			{
				this.vals = vals;
			}

			public override void NextBytes(
				byte[] bytes)
			{
				Array.Copy(vals, 0, bytes, 0, vals.Length);
			}
		}

		//
		// Example 1: A 1024-bit RSA keypair
		//
		private RsaKeyParameters pub1 = new RsaKeyParameters(false,
					new BigInteger("a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cffb2249bd9a2137",16),
					new BigInteger("010001",16));

		private RsaKeyParameters prv1 = new RsaPrivateCrtKeyParameters(
					new BigInteger("a56e4a0e701017589a5187dc7ea841d156f2ec0e36ad52a44dfeb1e61f7ad991d8c51056ffedb162b4c0f283a12a88a394dff526ab7291cbb307ceabfce0b1dfd5cd9508096d5b2b8b6df5d671ef6377c0921cb23c270a70e2598e6ff89d19f105acc2d3f0cb35f29280e1386b6f64c4ef22e1e1f20d0ce8cffb2249bd9a2137",16),
					new BigInteger("010001",16),
					new BigInteger("33a5042a90b27d4f5451ca9bbbd0b44771a101af884340aef9885f2a4bbe92e894a724ac3c568c8f97853ad07c0266c8c6a3ca0929f1e8f11231884429fc4d9ae55fee896a10ce707c3ed7e734e44727a39574501a532683109c2abacaba283c31b4bd2f53c3ee37e352cee34f9e503bd80c0622ad79c6dcee883547c6a3b325",16),
					new BigInteger("e7e8942720a877517273a356053ea2a1bc0c94aa72d55c6e86296b2dfc967948c0a72cbccca7eacb35706e09a1df55a1535bd9b3cc34160b3b6dcd3eda8e6443",16),
					new BigInteger("b69dca1cf7d4d7ec81e75b90fcca874abcde123fd2700180aa90479b6e48de8d67ed24f9f19d85ba275874f542cd20dc723e6963364a1f9425452b269a6799fd",16),
					new BigInteger("28fa13938655be1f8a159cbaca5a72ea190c30089e19cd274a556f36c4f6e19f554b34c077790427bbdd8dd3ede2448328f385d81b30e8e43b2fffa027861979",16),
					new BigInteger("1a8b38f398fa712049898d7fb79ee0a77668791299cdfa09efc0e507acb21ed74301ef5bfd48be455eaeb6e1678255827580a8e4e8e14151d1510a82a3f2e729",16),
					new BigInteger("27156aba4126d24a81f3a528cbfb27f56886f840a9f6e86e17a44b94fe9319584b8e22fdde1e5a2e3bd8aa5ba8d8584194eb2190acf832b847f13a3d24a79f4d",16));

		// PSSExample1.1

		private byte[] msg1a = Hex.Decode("cdc87da223d786df3b45e0bbbc721326d1ee2af806cc315475cc6f0d9c66e1b62371d45ce2392e1ac92844c310102f156a0d8d52c1f4c40ba3aa65095786cb769757a6563ba958fed0bcc984e8b517a3d5f515b23b8a41e74aa867693f90dfb061a6e86dfaaee64472c00e5f20945729cbebe77f06ce78e08f4098fba41f9d6193c0317e8b60d4b6084acb42d29e3808a3bc372d85e331170fcbf7cc72d0b71c296648b3a4d10f416295d0807aa625cab2744fd9ea8fd223c42537029828bd16be02546f130fd2e33b936d2676e08aed1b73318b750a0167d0");

		private byte[] slt1a = Hex.Decode("dee959c7e06411361420ff80185ed57f3e6776af");

		private byte[] sig1a = Hex.Decode("9074308fb598e9701b2294388e52f971faac2b60a5145af185df5287b5ed2887e57ce7fd44dc8634e407c8e0e4360bc226f3ec227f9d9e54638e8d31f5051215df6ebb9c2f9579aa77598a38f914b5b9c1bd83c4e2f9f382a0d0aa3542ffee65984a601bc69eb28deb27dca12c82c2d4c3f66cd500f1ff2b994d8a4e30cbb33c");

		// PSSExample1.2

		private byte[] msg1b = Hex.Decode("851384cdfe819c22ed6c4ccb30daeb5cf059bc8e1166b7e3530c4c233e2b5f8f71a1cca582d43ecc72b1bca16dfc7013226b9e");

		private byte[] slt1b = Hex.Decode("ef2869fa40c346cb183dab3d7bffc98fd56df42d");

		private byte[] sig1b = Hex.Decode("3ef7f46e831bf92b32274142a585ffcefbdca7b32ae90d10fb0f0c729984f04ef29a9df0780775ce43739b97838390db0a5505e63de927028d9d29b219ca2c4517832558a55d694a6d25b9dab66003c4cccd907802193be5170d26147d37b93590241be51c25055f47ef62752cfbe21418fafe98c22c4d4d47724fdb5669e843");

		//
		// Example 2: A 1025-bit RSA keypair
		//

		private RsaKeyParameters pub2 = new RsaKeyParameters(false,
					new BigInteger("01d40c1bcf97a68ae7cdbd8a7bf3e34fa19dcca4ef75a47454375f94514d88fed006fb829f8419ff87d6315da68a1ff3a0938e9abb3464011c303ad99199cf0c7c7a8b477dce829e8844f625b115e5e9c4a59cf8f8113b6834336a2fd2689b472cbb5e5cabe674350c59b6c17e176874fb42f8fc3d176a017edc61fd326c4b33c9", 16),
					new BigInteger("010001", 16));

		private RsaKeyParameters prv2 = new RsaPrivateCrtKeyParameters(
					new BigInteger("01d40c1bcf97a68ae7cdbd8a7bf3e34fa19dcca4ef75a47454375f94514d88fed006fb829f8419ff87d6315da68a1ff3a0938e9abb3464011c303ad99199cf0c7c7a8b477dce829e8844f625b115e5e9c4a59cf8f8113b6834336a2fd2689b472cbb5e5cabe674350c59b6c17e176874fb42f8fc3d176a017edc61fd326c4b33c9", 16),
					new BigInteger("010001", 16),
					new BigInteger("027d147e4673057377fd1ea201565772176a7dc38358d376045685a2e787c23c15576bc16b9f444402d6bfc5d98a3e88ea13ef67c353eca0c0ddba9255bd7b8bb50a644afdfd1dd51695b252d22e7318d1b6687a1c10ff75545f3db0fe602d5f2b7f294e3601eab7b9d1cecd767f64692e3e536ca2846cb0c2dd486a39fa75b1", 16),
					new BigInteger("016601e926a0f8c9e26ecab769ea65a5e7c52cc9e080ef519457c644da6891c5a104d3ea7955929a22e7c68a7af9fcad777c3ccc2b9e3d3650bce404399b7e59d1", 16),
					new BigInteger("014eafa1d4d0184da7e31f877d1281ddda625664869e8379e67ad3b75eae74a580e9827abd6eb7a002cb5411f5266797768fb8e95ae40e3e8a01f35ff89e56c079", 16),
					new BigInteger("e247cce504939b8f0a36090de200938755e2444b29539a7da7a902f6056835c0db7b52559497cfe2c61a8086d0213c472c78851800b171f6401de2e9c2756f31", 16),
					new BigInteger("b12fba757855e586e46f64c38a70c68b3f548d93d787b399999d4c8f0bbd2581c21e19ed0018a6d5d3df86424b3abcad40199d31495b61309f27c1bf55d487c1", 16),
					new BigInteger("564b1e1fa003bda91e89090425aac05b91da9ee25061e7628d5f51304a84992fdc33762bd378a59f030a334d532bd0dae8f298ea9ed844636ad5fb8cbdc03cad", 16));

		// PSS Example 2.1

		private byte[] msg2a = Hex.Decode("daba032066263faedb659848115278a52c44faa3a76f37515ed336321072c40a9d9b53bc05014078adf520875146aae70ff060226dcb7b1f1fc27e9360");
		private byte[] slt2a = Hex.Decode("57bf160bcb02bb1dc7280cf0458530b7d2832ff7");
		private byte[] sig2a = Hex.Decode("014c5ba5338328ccc6e7a90bf1c0ab3fd606ff4796d3c12e4b639ed9136a5fec6c16d8884bdd99cfdc521456b0742b736868cf90de099adb8d5ffd1deff39ba4007ab746cefdb22d7df0e225f54627dc65466131721b90af445363a8358b9f607642f78fab0ab0f43b7168d64bae70d8827848d8ef1e421c5754ddf42c2589b5b3");

		// PSS Example 2.2

		private byte[] msg2b = Hex.Decode("e4f8601a8a6da1be34447c0959c058570c3668cfd51dd5f9ccd6ad4411fe8213486d78a6c49f93efc2ca2288cebc2b9b60bd04b1e220d86e3d4848d709d032d1e8c6a070c6af9a499fcf95354b14ba6127c739de1bb0fd16431e46938aec0cf8ad9eb72e832a7035de9b7807bdc0ed8b68eb0f5ac2216be40ce920c0db0eddd3860ed788efaccaca502d8f2bd6d1a7c1f41ff46f1681c8f1f818e9c4f6d91a0c7803ccc63d76a6544d843e084e363b8acc55aa531733edb5dee5b5196e9f03e8b731b3776428d9e457fe3fbcb3db7274442d785890e9cb0854b6444dace791d7273de1889719338a77fe");
		private byte[] slt2b = Hex.Decode("7f6dd359e604e60870e898e47b19bf2e5a7b2a90");
		private byte[] sig2b = Hex.Decode("010991656cca182b7f29d2dbc007e7ae0fec158eb6759cb9c45c5ff87c7635dd46d150882f4de1e9ae65e7f7d9018f6836954a47c0a81a8a6b6f83f2944d6081b1aa7c759b254b2c34b691da67cc0226e20b2f18b42212761dcd4b908a62b371b5918c5742af4b537e296917674fb914194761621cc19a41f6fb953fbcbb649dea");

		//
		//  Example 4: A 1027-bit RSA key pair
		//

		private RsaKeyParameters pub4 = new RsaKeyParameters(false,
					new BigInteger("054adb7886447efe6f57e0368f06cf52b0a3370760d161cef126b91be7f89c421b62a6ec1da3c311d75ed50e0ab5fff3fd338acc3aa8a4e77ee26369acb81ba900fa83f5300cf9bb6c53ad1dc8a178b815db4235a9a9da0c06de4e615ea1277ce559e9c108de58c14a81aa77f5a6f8d1335494498848c8b95940740be7bf7c3705", 16),
					new BigInteger("010001", 16));

		private RsaKeyParameters prv4 = new RsaPrivateCrtKeyParameters(
					new BigInteger("054adb7886447efe6f57e0368f06cf52b0a3370760d161cef126b91be7f89c421b62a6ec1da3c311d75ed50e0ab5fff3fd338acc3aa8a4e77ee26369acb81ba900fa83f5300cf9bb6c53ad1dc8a178b815db4235a9a9da0c06de4e615ea1277ce559e9c108de58c14a81aa77f5a6f8d1335494498848c8b95940740be7bf7c3705", 16),
					new BigInteger("010001", 16),
					new BigInteger("fa041f8cd9697ceed38ec8caa275523b4dd72b09a301d3541d72f5d31c05cbce2d6983b36183af10690bd46c46131e35789431a556771dd0049b57461bf060c1f68472e8a67c25f357e5b6b4738fa541a730346b4a07649a2dfa806a69c975b6aba64678acc7f5913e89c622f2d8abb1e3e32554e39df94ba60c002e387d9011", 16),
					new BigInteger("029232336d2838945dba9dd7723f4e624a05f7375b927a87abe6a893a1658fd49f47f6c7b0fa596c65fa68a23f0ab432962d18d4343bd6fd671a5ea8d148413995", 16),
					new BigInteger("020ef5efe7c5394aed2272f7e81a74f4c02d145894cb1b3cab23a9a0710a2afc7e3329acbb743d01f680c4d02afb4c8fde7e20930811bb2b995788b5e872c20bb1", 16),
					new BigInteger("026e7e28010ecf2412d9523ad704647fb4fe9b66b1a681581b0e15553a89b1542828898f27243ebab45ff5e1acb9d4df1b051fbc62824dbc6f6c93261a78b9a759", 16),
					new BigInteger("012ddcc86ef655998c39ddae11718669e5e46cf1495b07e13b1014cd69b3af68304ad2a6b64321e78bf3bbca9bb494e91d451717e2d97564c6549465d0205cf421", 16),
					new BigInteger("010600c4c21847459fe576703e2ebecae8a5094ee63f536bf4ac68d3c13e5e4f12ac5cc10ab6a2d05a199214d1824747d551909636b774c22cac0b837599abcc75", 16));

		// PSS Example 4.1

		private byte[] msg4a = Hex.Decode("9fb03b827c8217d9");

		private byte[] slt4a = Hex.Decode("ed7c98c95f30974fbe4fbddcf0f28d6021c0e91d");

		private byte[] sig4a = Hex.Decode("0323d5b7bf20ba4539289ae452ae4297080feff4518423ff4811a817837e7d82f1836cdfab54514ff0887bddeebf40bf99b047abc3ecfa6a37a3ef00f4a0c4a88aae0904b745c846c4107e8797723e8ac810d9e3d95dfa30ff4966f4d75d13768d20857f2b1406f264cfe75e27d7652f4b5ed3575f28a702f8c4ed9cf9b2d44948");

		// PSS Example 4.2

		private byte[] msg4b = Hex.Decode("0ca2ad77797ece86de5bf768750ddb5ed6a3116ad99bbd17edf7f782f0db1cd05b0f677468c5ea420dc116b10e80d110de2b0461ea14a38be68620392e7e893cb4ea9393fb886c20ff790642305bf302003892e54df9f667509dc53920df583f50a3dd61abb6fab75d600377e383e6aca6710eeea27156e06752c94ce25ae99fcbf8592dbe2d7e27453cb44de07100ebb1a2a19811a478adbeab270f94e8fe369d90b3ca612f9f");

		private byte[] slt4b = Hex.Decode("22d71d54363a4217aa55113f059b3384e3e57e44");

		private byte[] sig4b = Hex.Decode("049d0185845a264d28feb1e69edaec090609e8e46d93abb38371ce51f4aa65a599bdaaa81d24fba66a08a116cb644f3f1e653d95c89db8bbd5daac2709c8984000178410a7c6aa8667ddc38c741f710ec8665aa9052be929d4e3b16782c1662114c5414bb0353455c392fc28f3db59054b5f365c49e1d156f876ee10cb4fd70598");


		//
		// Example 8: A 1031-bit RSA key pair
		//

		private RsaKeyParameters pub8 = new RsaKeyParameters(false,
					new BigInteger("495370a1fb18543c16d3631e3163255df62be6eee890d5f25509e4f778a8ea6fbbbcdf85dff64e0d972003ab3681fbba6dd41fd541829b2e582de9f2a4a4e0a2d0900bef4753db3cee0ee06c7dfae8b1d53b5953218f9cceea695b08668edeaadced9463b1d790d5ebf27e9115b46cad4d9a2b8efab0561b0810344739ada0733f", 16),
					new BigInteger("010001", 16));

		private RsaKeyParameters prv8 = new RsaPrivateCrtKeyParameters(
					new BigInteger("495370a1fb18543c16d3631e3163255df62be6eee890d5f25509e4f778a8ea6fbbbcdf85dff64e0d972003ab3681fbba6dd41fd541829b2e582de9f2a4a4e0a2d0900bef4753db3cee0ee06c7dfae8b1d53b5953218f9cceea695b08668edeaadced9463b1d790d5ebf27e9115b46cad4d9a2b8efab0561b0810344739ada0733f", 16),
					new BigInteger("010001", 16),
					new BigInteger("6c66ffe98980c38fcdeab5159898836165f4b4b817c4f6a8d486ee4ea9130fe9b9092bd136d184f95f504a607eac565846d2fdd6597a8967c7396ef95a6eeebb4578a643966dca4d8ee3de842de63279c618159c1ab54a89437b6a6120e4930afb52a4ba6ced8a4947ac64b30a3497cbe701c2d6266d517219ad0ec6d347dbe9", 16),
					new BigInteger("08dad7f11363faa623d5d6d5e8a319328d82190d7127d2846c439b0ab72619b0a43a95320e4ec34fc3a9cea876422305bd76c5ba7be9e2f410c8060645a1d29edb", 16),
					new BigInteger("0847e732376fc7900f898ea82eb2b0fc418565fdae62f7d9ec4ce2217b97990dd272db157f99f63c0dcbb9fbacdbd4c4dadb6df67756358ca4174825b48f49706d", 16),
					new BigInteger("05c2a83c124b3621a2aa57ea2c3efe035eff4560f33ddebb7adab81fce69a0c8c2edc16520dda83d59a23be867963ac65f2cc710bbcfb96ee103deb771d105fd85", 16),
					new BigInteger("04cae8aa0d9faa165c87b682ec140b8ed3b50b24594b7a3b2c220b3669bb819f984f55310a1ae7823651d4a02e99447972595139363434e5e30a7e7d241551e1b9", 16),
					new BigInteger("07d3e47bf686600b11ac283ce88dbb3f6051e8efd04680e44c171ef531b80b2b7c39fc766320e2cf15d8d99820e96ff30dc69691839c4b40d7b06e45307dc91f3f", 16));

		// PSS Example 8.1

		private byte[] msg8a = Hex.Decode("81332f4be62948415ea1d899792eeacf6c6e1db1da8be13b5cea41db2fed467092e1ff398914c714259775f595f8547f735692a575e6923af78f22c6997ddb90fb6f72d7bb0dd5744a31decd3dc3685849836ed34aec596304ad11843c4f88489f209735f5fb7fdaf7cec8addc5818168f880acbf490d51005b7a8e84e43e54287977571dd99eea4b161eb2df1f5108f12a4142a83322edb05a75487a3435c9a78ce53ed93bc550857d7a9fb");

		private byte[] slt8a = Hex.Decode("1d65491d79c864b373009be6f6f2467bac4c78fa");

		private byte[] sig8a = Hex.Decode("0262ac254bfa77f3c1aca22c5179f8f040422b3c5bafd40a8f21cf0fa5a667ccd5993d42dbafb409c520e25fce2b1ee1e716577f1efa17f3da28052f40f0419b23106d7845aaf01125b698e7a4dfe92d3967bb00c4d0d35ba3552ab9a8b3eef07c7fecdbc5424ac4db1e20cb37d0b2744769940ea907e17fbbca673b20522380c5");

		// PSS Example 8.2

		private byte[] msg8b = Hex.Decode("e2f96eaf0e05e7ba326ecca0ba7fd2f7c02356f3cede9d0faabf4fcc8e60a973e5595fd9ea08");

		private byte[] slt8b = Hex.Decode("435c098aa9909eb2377f1248b091b68987ff1838");

		private byte[] sig8b = Hex.Decode("2707b9ad5115c58c94e932e8ec0a280f56339e44a1b58d4ddcff2f312e5f34dcfe39e89c6a94dcee86dbbdae5b79ba4e0819a9e7bfd9d982e7ee6c86ee68396e8b3a14c9c8f34b178eb741f9d3f121109bf5c8172fada2e768f9ea1433032c004a8aa07eb990000a48dc94c8bac8aabe2b09b1aa46c0a2aa0e12f63fbba775ba7e");

		//
		// Example 9: A 1536-bit RSA key pair
		//

		private RsaKeyParameters pub9 = new RsaKeyParameters(false,
					new BigInteger("e6bd692ac96645790403fdd0f5beb8b9bf92ed10007fc365046419dd06c05c5b5b2f48ecf989e4ce269109979cbb40b4a0ad24d22483d1ee315ad4ccb1534268352691c524f6dd8e6c29d224cf246973aec86c5bf6b1401a850d1b9ad1bb8cbcec47b06f0f8c7f45d3fc8f319299c5433ddbc2b3053b47ded2ecd4a4caefd614833dc8bb622f317ed076b8057fe8de3f84480ad5e83e4a61904a4f248fb397027357e1d30e463139815c6fd4fd5ac5b8172a45230ecb6318a04f1455d84e5a8b", 16),
					new BigInteger("010001", 16));

		private RsaKeyParameters prv9 = new RsaPrivateCrtKeyParameters(
					new BigInteger("e6bd692ac96645790403fdd0f5beb8b9bf92ed10007fc365046419dd06c05c5b5b2f48ecf989e4ce269109979cbb40b4a0ad24d22483d1ee315ad4ccb1534268352691c524f6dd8e6c29d224cf246973aec86c5bf6b1401a850d1b9ad1bb8cbcec47b06f0f8c7f45d3fc8f319299c5433ddbc2b3053b47ded2ecd4a4caefd614833dc8bb622f317ed076b8057fe8de3f84480ad5e83e4a61904a4f248fb397027357e1d30e463139815c6fd4fd5ac5b8172a45230ecb6318a04f1455d84e5a8b", 16),
					new BigInteger("010001", 16),
					new BigInteger("6a7fd84fb85fad073b34406db74f8d61a6abc12196a961dd79565e9da6e5187bce2d980250f7359575359270d91590bb0e427c71460b55d51410b191bcf309fea131a92c8e702738fa719f1e0041f52e40e91f229f4d96a1e6f172e15596b4510a6daec26105f2bebc53316b87bdf21311666070e8dfee69d52c71a976caae79c72b68d28580dc686d9f5129d225f82b3d615513a882b3db91416b48ce08888213e37eeb9af800d81cab328ce420689903c00c7b5fd31b75503a6d419684d629", 16),
					new BigInteger("f8eb97e98df12664eefdb761596a69ddcd0e76daece6ed4bf5a1b50ac086f7928a4d2f8726a77e515b74da41988f220b1cc87aa1fc810ce99a82f2d1ce821edced794c6941f42c7a1a0b8c4d28c75ec60b652279f6154a762aed165d47dee367", 16),
					new BigInteger("ed4d71d0a6e24b93c2e5f6b4bbe05f5fb0afa042d204fe3378d365c2f288b6a8dad7efe45d153eef40cacc7b81ff934002d108994b94a5e4728cd9c963375ae49965bda55cbf0efed8d6553b4027f2d86208a6e6b489c176128092d629e49d3d", 16),
					new BigInteger("2bb68bddfb0c4f56c8558bffaf892d8043037841e7fa81cfa61a38c5e39b901c8ee71122a5da2227bd6cdeeb481452c12ad3d61d5e4f776a0ab556591befe3e59e5a7fddb8345e1f2f35b9f4cee57c32414c086aec993e9353e480d9eec6289f", 16),
					new BigInteger("4ff897709fad079746494578e70fd8546130eeab5627c49b080f05ee4ad9f3e4b7cba9d6a5dff113a41c3409336833f190816d8a6bc42e9bec56b7567d0f3c9c696db619b245d901dd856db7c8092e77e9a1cccd56ee4dba42c5fdb61aec2669", 16),
					new BigInteger("77b9d1137b50404a982729316efafc7dfe66d34e5a182600d5f30a0a8512051c560d081d4d0a1835ec3d25a60f4e4d6aa948b2bf3dbb5b124cbbc3489255a3a948372f6978496745f943e1db4f18382ceaa505dfc65757bb3f857a58dce52156", 16));

		// PSS Example 9.1

		private byte[] msg9a = Hex.Decode("a88e265855e9d7ca36c68795f0b31b591cd6587c71d060a0b3f7f3eaef43795922028bc2b6ad467cfc2d7f659c5385aa70ba3672cdde4cfe4970cc7904601b278872bf51321c4a972f3c95570f3445d4f57980e0f20df54846e6a52c668f1288c03f95006ea32f562d40d52af9feb32f0fa06db65b588a237b34e592d55cf979f903a642ef64d2ed542aa8c77dc1dd762f45a59303ed75e541ca271e2b60ca709e44fa0661131e8d5d4163fd8d398566ce26de8730e72f9cca737641c244159420637028df0a18079d6208ea8b4711a2c750f5");

		private byte[] slt9a = Hex.Decode("c0a425313df8d7564bd2434d311523d5257eed80");

		private byte[] sig9a = Hex.Decode("586107226c3ce013a7c8f04d1a6a2959bb4b8e205ba43a27b50f124111bc35ef589b039f5932187cb696d7d9a32c0c38300a5cdda4834b62d2eb240af33f79d13dfbf095bf599e0d9686948c1964747b67e89c9aba5cd85016236f566cc5802cb13ead51bc7ca6bef3b94dcbdbb1d570469771df0e00b1a8a06777472d2316279edae86474668d4e1efff95f1de61c6020da32ae92bbf16520fef3cf4d88f61121f24bbd9fe91b59caf1235b2a93ff81fc403addf4ebdea84934a9cdaf8e1a9e");

		// PSS Example 9.2

		private byte[] msg9b = Hex.Decode("c8c9c6af04acda414d227ef23e0820c3732c500dc87275e95b0d095413993c2658bc1d988581ba879c2d201f14cb88ced153a01969a7bf0a7be79c84c1486bc12b3fa6c59871b6827c8ce253ca5fefa8a8c690bf326e8e37cdb96d90a82ebab69f86350e1822e8bd536a2e");

		private byte[] slt9b = Hex.Decode("b307c43b4850a8dac2f15f32e37839ef8c5c0e91");

		private byte[] sig9b = Hex.Decode("80b6d643255209f0a456763897ac9ed259d459b49c2887e5882ecb4434cfd66dd7e1699375381e51cd7f554f2c271704b399d42b4be2540a0eca61951f55267f7c2878c122842dadb28b01bd5f8c025f7e228418a673c03d6bc0c736d0a29546bd67f786d9d692ccea778d71d98c2063b7a71092187a4d35af108111d83e83eae46c46aa34277e06044589903788f1d5e7cee25fb485e92949118814d6f2c3ee361489016f327fb5bc517eb50470bffa1afa5f4ce9aa0ce5b8ee19bf5501b958");


		public override string Name
		{
			get { return "PssBlindTest"; }
		}

		private void testSig(
			int                 id,
			RsaKeyParameters    pub,
			RsaKeyParameters    prv,
			byte[]              slt,
			byte[]              msg,
			byte[]              sig)
		{
			RsaBlindingFactorGenerator blindFactorGen = new RsaBlindingFactorGenerator();
			RsaBlindingEngine blindingEngine = new RsaBlindingEngine();
			PssSigner blindSigner = new PssSigner(blindingEngine, new Sha1Digest(), 20);
			PssSigner signer = new PssSigner(new RsaEngine(), new Sha1Digest(), 20);

			blindFactorGen.Init(pub);

			BigInteger blindFactor = blindFactorGen.GenerateBlindingFactor();
			RsaBlindingParameters parameters = new RsaBlindingParameters(pub, blindFactor);

			// generate a blind signature
			blindSigner.Init(true, new ParametersWithRandom(parameters, new FixedRandom(slt)));

			blindSigner.BlockUpdate(msg, 0, msg.Length);

			byte[] blindedData = blindSigner.GenerateSignature();

			RsaEngine signerEngine = new RsaEngine();

			signerEngine.Init(true, prv);

			byte[] blindedSig = signerEngine.ProcessBlock(blindedData, 0, blindedData.Length);

			// unblind the signature
			blindingEngine.Init(false, parameters);

			byte[] s = blindingEngine.ProcessBlock(blindedSig, 0, blindedSig.Length);

			//signature verification
			if (!AreEqual(s, sig))
			{
				Fail("test " + id + " failed generation");
			}
	        
			//verify signature with PssSigner
			signer.Init(false, pub);
			signer.BlockUpdate(msg, 0, msg.Length);

			if (!signer.VerifySignature(s))
			{
        		Fail("test " + id + " failed PssSigner verification");
			}
		}

		private bool isProcessingOkay(
			RsaKeyParameters    pub,
			RsaKeyParameters    prv,
			byte[]              data,
			SecureRandom        random)
		{
			RsaBlindingFactorGenerator blindFactorGen = new RsaBlindingFactorGenerator();
			RsaBlindingEngine blindingEngine = new RsaBlindingEngine();
			PssSigner blindSigner = new PssSigner(blindingEngine, new Sha1Digest(), 20);
			PssSigner pssEng = new PssSigner(new RsaEngine(), new Sha1Digest(), 20);

			random.NextBytes(data);

			blindFactorGen.Init(pub);

			BigInteger blindFactor = blindFactorGen.GenerateBlindingFactor();
			RsaBlindingParameters parameters = new RsaBlindingParameters(pub, blindFactor);

			// generate a blind signature
			blindSigner.Init(true, new ParametersWithRandom(parameters, random));

			blindSigner.BlockUpdate(data, 0, data.Length);

			byte[] blindedData = blindSigner.GenerateSignature();

			RsaEngine signerEngine = new RsaEngine();

			signerEngine.Init(true, prv);

			byte[] blindedSig = signerEngine.ProcessBlock(blindedData, 0, blindedData.Length);

			// unblind the signature
			blindingEngine.Init(false, parameters);

			byte[] s = blindingEngine.ProcessBlock(blindedSig, 0, blindedSig.Length);

			//verify signature with PssSigner
			pssEng.Init(false, pub);
			pssEng.BlockUpdate(data, 0, data.Length);

			return pssEng.VerifySignature(s);
		}

		public override void PerformTest()
		{
			testSig(1, pub1, prv1, slt1a, msg1a, sig1a);
			testSig(2, pub1, prv1, slt1b, msg1b, sig1b);
			testSig(3, pub2, prv2, slt2a, msg2a, sig2a);
			testSig(4, pub2, prv2, slt2b, msg2b, sig2b);
			testSig(5, pub4, prv4, slt4a, msg4a, sig4a);
			testSig(6, pub4, prv4, slt4b, msg4b, sig4b);
			testSig(7, pub8, prv8, slt8a, msg8a, sig8a);
			testSig(8, pub8, prv8, slt8b, msg8b, sig8b);
			testSig(9, pub9, prv9, slt9a, msg9a, sig9a);
			testSig(10, pub9, prv9, slt9b, msg9b, sig9b);
	        
			//
			// loop test
			//
			RsaBlindingFactorGenerator blindFactorGen = new RsaBlindingFactorGenerator();
			RsaBlindingEngine blindingEngine = new RsaBlindingEngine();
			PssSigner blindSigner = new PssSigner(blindingEngine, new Sha1Digest(), 20);
			PssSigner				 pssEng = new PssSigner(new RsaEngine(), new Sha1Digest(), 20);
	        
			int failed = 0;
			byte[] data = new byte[DATA_LENGTH];

			SecureRandom    random = new SecureRandom();


			RsaKeyParameters[] kprv ={prv1, prv2, prv4, prv8, prv9};
			RsaKeyParameters[] kpub ={pub1, pub2, pub4, pub8, pub9};

			for (int j = 0, i = 0; j < NUM_TESTS; j++, i++)
			{
        		if (i == kprv.Length)
				{
					i = 0;
				}

				if (!isProcessingOkay(kpub[i], kprv[i], data, random))
				{
            		failed++;
				}
			}

			if (failed != 0)
			{
				Fail("loop test failed - failures: " + failed);
			}

			//
			// key generation test
			//
			RsaKeyPairGenerator pGen = new RsaKeyPairGenerator();
			RsaKeyGenerationParameters genParam = new RsaKeyGenerationParameters(
				BigInteger.ValueOf(0x11), new SecureRandom(), 1024, 25);

			pGen.Init(genParam);
			failed = 0;

			for (int k = 0; k < NUM_TESTS_WITH_KEY_GENERATION; k++)
			{
        		AsymmetricCipherKeyPair pair = pGen.GenerateKeyPair();

				for (int j = 0; j < NUM_TESTS; j++)
				{
					if (!isProcessingOkay((RsaKeyParameters)pair.Public, (RsaKeyParameters)pair.Private, data, random))
					{
						failed++;
					}
				}
			}

			if (failed != 0)
			{
				Fail("loop test with key generation failed - failures: " + failed);
			}
		}

		public static void Main(
			string[] args)
		{
			RunTest(new PssBlindTest());
		}

		[Test]
		public void TestFunction()
		{
			string resultText = Perform().ToString();

			Assert.AreEqual(Name + ": Okay", resultText);
		}
	}
}
