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1 /* |
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2 * Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include <asymmetrickeys.h> |
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20 #include "dhkeypairshim.h" |
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21 |
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22 |
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23 /* CDHParameters */ |
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24 EXPORT_C const TInteger& CDHParameters::N(void) const |
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25 { |
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26 return iN; |
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27 } |
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28 |
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29 EXPORT_C const TInteger& CDHParameters::G(void) const |
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30 { |
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31 return iG; |
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32 } |
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33 |
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34 EXPORT_C CDHParameters::~CDHParameters(void) |
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35 { |
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36 iN.Close(); |
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37 iG.Close(); |
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38 } |
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39 |
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40 EXPORT_C CDHParameters::CDHParameters(RInteger& aN, RInteger& aG) : iN(aN), iG(aG) |
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41 { |
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42 } |
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43 |
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44 /* CDHPublicKey */ |
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45 EXPORT_C CDHPublicKey* CDHPublicKey::NewL(RInteger& aN, RInteger& aG, |
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46 RInteger& aX) |
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47 { |
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48 CDHPublicKey* self = new(ELeave) CDHPublicKey(aN, aG, aX); |
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49 return self; |
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50 } |
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51 |
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52 EXPORT_C CDHPublicKey* CDHPublicKey::NewLC(RInteger& aN, RInteger& aG, |
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53 RInteger& aX) |
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54 { |
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55 CDHPublicKey* self = NewL(aN, aG, aX); |
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56 CleanupStack::PushL(self); |
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57 return self; |
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58 } |
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59 |
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60 EXPORT_C const TInteger& CDHPublicKey::X(void) const |
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61 { |
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62 return iX; |
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63 } |
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64 |
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65 EXPORT_C CDHPublicKey::CDHPublicKey(RInteger& aN, RInteger& aG, RInteger& aX) |
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66 : CDHParameters(aN, aG), iX(aX) |
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67 { |
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68 } |
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69 |
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70 EXPORT_C CDHPublicKey::~CDHPublicKey(void) |
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71 { |
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72 iX.Close(); |
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73 } |
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74 |
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75 /* CDHPrivateKey */ |
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76 EXPORT_C CDHPrivateKey* CDHPrivateKey::NewL(RInteger& aN, RInteger& aG, |
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77 RInteger& ax) |
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78 { |
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79 CDHPrivateKey* self = new(ELeave) CDHPrivateKey(aN, aG, ax); |
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80 return self; |
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81 } |
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82 |
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83 EXPORT_C CDHPrivateKey* CDHPrivateKey::NewLC(RInteger& aN, RInteger& aG, |
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84 RInteger& ax) |
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85 { |
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86 CDHPrivateKey* self = NewL(aN, aG, ax); |
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87 CleanupStack::PushL(self); |
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88 return self; |
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89 } |
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90 |
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91 EXPORT_C const TInteger& CDHPrivateKey::x(void) const |
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92 { |
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93 return ix; |
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94 } |
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95 |
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96 EXPORT_C CDHPrivateKey::CDHPrivateKey(RInteger& aN, RInteger& aG, RInteger& ax) |
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97 : CDHParameters(aN, aG), ix(ax) |
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98 { |
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99 } |
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100 |
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101 EXPORT_C CDHPrivateKey::~CDHPrivateKey(void) |
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102 { |
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103 ix.Close(); |
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104 } |
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105 |
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106 /* CDHKeyPair */ |
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107 |
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108 EXPORT_C CDHKeyPair* CDHKeyPair::NewL(RInteger& aN, RInteger& aG) |
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109 { |
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110 CDHKeyPairShim* self = CDHKeyPairShim::NewLC(aN, aG); |
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111 CleanupStack::Pop(self); |
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112 return self; |
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113 } |
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114 |
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115 EXPORT_C CDHKeyPair* CDHKeyPair::NewLC(RInteger& aN, RInteger& aG) |
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116 { |
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117 CDHKeyPairShim* self = CDHKeyPairShim::NewLC(aN, aG); |
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118 return self; |
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119 } |
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120 |
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121 EXPORT_C CDHKeyPair* CDHKeyPair::NewL(RInteger& aN, RInteger& aG, RInteger& ax) |
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122 { |
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123 CDHKeyPairShim* self = CDHKeyPairShim::NewLC(aN, aG, ax); |
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124 CleanupStack::Pop(self); |
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125 return self; |
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126 } |
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127 |
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128 EXPORT_C CDHKeyPair* CDHKeyPair::NewLC(RInteger& aN, RInteger& aG, RInteger& ax) |
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129 { |
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130 CDHKeyPairShim* self = CDHKeyPairShim::NewLC(aN, aG, ax); |
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131 return self; |
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132 } |
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133 |
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134 EXPORT_C const CDHPublicKey& CDHKeyPair::PublicKey(void) const |
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135 { |
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136 return *iPublic; |
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137 } |
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138 |
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139 EXPORT_C const CDHPrivateKey& CDHKeyPair::PrivateKey(void) const |
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140 { |
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141 return *iPrivate; |
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142 } |
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143 |
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144 EXPORT_C CDHKeyPair::~CDHKeyPair(void) |
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145 { |
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146 delete iPublic; |
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147 delete iPrivate; |
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148 } |
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149 |
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150 EXPORT_C CDHKeyPair::CDHKeyPair(void) |
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151 { |
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152 } |
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153 |
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154 // Excluded from coverage due to shim replacements. |
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155 #ifdef _BullseyeCoverage |
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156 #pragma suppress_warnings on |
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157 #pragma BullseyeCoverage off |
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158 #pragma suppress_warnings off |
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159 #endif |
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160 EXPORT_C void CDHKeyPair::ConstructL(RInteger& aN, RInteger& aG) |
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161 { |
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162 //declaring a reference just for clarity in NewRandomL statement |
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163 RInteger& nminus2 = aN; |
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164 --nminus2; |
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165 --nminus2; |
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166 |
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167 //find a random x | 1 <= x <= n-2 |
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168 RInteger x = RInteger::NewRandomL(TInteger::One(), nminus2); |
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169 CleanupStack::PushL(x); |
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170 ++nminus2; |
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171 ++nminus2; // reincrement aN |
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172 |
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173 ConstructL(aN, aG, x); |
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174 |
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175 CleanupStack::Pop(&x); |
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176 } |
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177 |
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178 EXPORT_C void CDHKeyPair::ConstructL(RInteger& aN, RInteger& aG, RInteger& ax) |
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179 { |
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180 //declaring a reference just for clarity in if statements |
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181 RInteger& nminus2 = aN; |
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182 --nminus2; |
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183 --nminus2; |
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184 |
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185 if( aG < TInteger::Two() || aG > nminus2 ) |
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186 { |
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187 User::Leave(KErrArgument); |
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188 } |
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189 //In the case of the other ConstructL calling this function this if |
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190 //statement is redundant. However, we need to check as this is can be |
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191 //called without going through the other api. |
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192 if( ax < TInteger::One() || ax > nminus2 ) |
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193 { |
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194 User::Leave(KErrArgument); |
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195 } |
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196 |
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197 ++nminus2; |
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198 ++nminus2; // reincrement aN |
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199 |
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200 // Calculate X = g^(x) mod n; (note the case sensitivity) |
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201 RInteger X = TInteger::ModularExponentiateL(aG, ax, aN); |
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202 CleanupStack::PushL(X); |
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203 |
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204 RInteger n1 = RInteger::NewL(aN); |
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205 CleanupStack::PushL(n1); |
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206 RInteger g1 = RInteger::NewL(aG); |
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207 CleanupStack::PushL(g1); |
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208 iPublic = CDHPublicKey::NewL(n1, g1, X); |
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209 CleanupStack::Pop(3, &X); // g1, n1, X all owned by iPublic |
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210 |
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211 iPrivate = CDHPrivateKey::NewL(aN, aG, ax); |
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212 } |
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213 |
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214 // Unused exported and protected members. So, exclude them from coverage. |
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215 EXPORT_C CDHParameters::CDHParameters(void) |
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216 { |
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217 } |
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218 |
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219 EXPORT_C CDHPrivateKey::CDHPrivateKey(void) |
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220 { |
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221 } |
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222 |
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223 EXPORT_C CDHPublicKey::CDHPublicKey(void) |
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224 { |
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225 } |