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1 // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Test suite to check whether the device has good enough entropy sources or not. |
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15 // More the no. of sources, high the quality of the random numbers (least predictable). |
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16 // |
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17 // |
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18 |
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19 /** |
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20 @file |
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21 @internalTechnology |
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22 */ |
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23 |
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24 #define __E32TEST_EXTENSION__ |
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25 #include <e32test.h> |
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26 #include <hal.h> |
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27 #include <e32math.h> |
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28 #include "d_entropysources.h" |
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29 |
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30 //--------------------------------------------------------------------------------------------------------------------- |
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31 //! @SYMTestCaseID KBASE-entropysources-2703 |
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32 //! @SYMTestType UT |
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33 //! @SYMTestCaseDesc Verifies that entropy is contributed to the Secure RNG |
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34 //! @SYMPREQ PREQ211 |
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35 //! @SYMTestPriority High |
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36 //! @SYMTestActions |
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37 //! 1. TestReseed: tests that the interval between RNG reseeds is less than KMaxReseedTime, unless the platform is |
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38 //! known not to have a viable entropy source. |
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39 //! |
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40 //! |
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41 //! @SYMTestExpectedResults |
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42 //! 1. Properties checked: |
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43 //! 1) checks that there is a valid entropy source contrbuting entropy data. |
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44 //! 2) checks that the entropy collection framework is functioning correctly.. |
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45 //! |
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46 //--------------------------------------------------------------------------------------------------------------------- |
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47 |
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48 // In a worst case scenario, we expect the reseed to happen within ten minutes. |
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49 // This is approximately 1/10 of the actual reseed intervel time (97.8 rounded to => 98). |
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50 // ((2^24 (reseed intervel) * 350 (micro seconds per request)) / 1000000) / 60 => 97.8 minutes. |
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51 // |
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52 const TTimeIntervalMicroSeconds32 KMaxReseedTime = 10 * 60 * 1000000; |
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53 |
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54 REntropySources Ldd; |
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55 |
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56 LOCAL_D RTest test(_L("T_ENTROPYSOURCES")); |
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57 |
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58 LOCAL_C void TestReseed() |
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59 { |
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60 test.Next(_L("Loading test driver")); |
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61 TInt r = User::LoadLogicalDevice(KEntropySourcesName); |
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62 test(r==KErrNone || r==KErrAlreadyExists); |
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63 |
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64 test.Next(_L("Opening the logical channel")); |
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65 test_KErrNone(Ldd.Open()); |
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66 |
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67 RTimer timer; |
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68 test_KErrNone(timer.CreateLocal()); |
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69 |
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70 test.Next(_L("Testing reseed interval")); |
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71 // Wait for two reseeds, so we can prove the interval between them is ok |
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72 for (TInt i=0; i<2; ++i) |
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73 { |
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74 // Request notification of the next reseed, with a timeout |
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75 test.Next(_L("Requesting reseed notification")); |
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76 TRequestStatus reseed, timeout; |
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77 Ldd.ReseedTest(reseed); |
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78 timer.After(timeout, KMaxReseedTime); |
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79 |
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80 // Prod the RNG to make sure it's not idle, then wait for an event |
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81 test.Next(_L("Prod RNG and wait")); |
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82 Math::Random(); |
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83 User::WaitForRequest(reseed, timeout); |
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84 |
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85 // Check we didn't time out and cancel the timer |
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86 test_Equal(KRequestPending, timeout.Int()); |
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87 timer.Cancel(); |
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88 User::WaitForRequest(timeout); |
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89 test_Equal(KErrCancel, timeout.Int()); |
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90 test_KErrNone(reseed.Int()); |
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91 } |
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92 |
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93 Ldd.Close(); |
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94 |
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95 User::FreeLogicalDevice(KEntropySourcesName); |
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96 } |
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97 |
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98 LOCAL_C TBool HardwareRNGPresent() |
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99 { |
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100 TInt muid = 0; |
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101 const TInt r = HAL::Get(HAL::EMachineUid, muid); |
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102 if (r != KErrNone) return EFalse;; |
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103 return ((muid != HAL::EMachineUid_X86PC) && |
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104 (muid != HAL::EMachineUid_NE1_TB) && |
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105 (muid != HAL::EMachineUid_OmapH6) && |
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106 (muid != HAL::EMachineUid_OmapZoom) && |
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107 (muid != HAL::EMachineUid_Win32Emulator)); |
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108 } |
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109 |
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110 GLDEF_C TInt E32Main() |
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111 { |
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112 test.Title(); |
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113 test.Start(_L("Test periodic entropy source")); |
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114 |
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115 if(HardwareRNGPresent()) |
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116 { |
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117 __UHEAP_MARK; |
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118 |
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119 TestReseed(); |
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120 |
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121 __UHEAP_MARKEND; |
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122 } |
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123 else |
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124 { |
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125 test.Printf(_L("Test skipped, platform is known not to have a periodic entropy source\n")); |
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126 } |
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127 test.End(); |
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128 test.Close(); |
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129 |
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130 return 0; |
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131 } |