/* Derived from source code of TrueCrypt 7.1a, which is Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed by the TrueCrypt License 3.0. Modifications and additions to the original source code (contained in this file) and all other portions of this file are Copyright (c) 2013-2015 IDRIX and are governed by the Apache License 2.0 the full text of which is contained in the file License.txt included in VeraCrypt binary and source code distribution packages. */ #include "VolumePassword.h" #include "Platform/SerializerFactory.h" #include "Platform/StringConverter.h" namespace VeraCrypt { VolumePassword::VolumePassword () : PasswordSize (0), Unportable (false) { AllocateBuffer (); } VolumePassword::VolumePassword (const char *password, size_t size) { Set ((const byte *) password, size); } VolumePassword::VolumePassword (const byte *password, size_t size) { Set (password, size); } VolumePassword::VolumePassword (const wchar_t *password, size_t charCount) { Set (password, charCount); } VolumePassword::VolumePassword (const wstring &password) { Set (password.c_str(), password.size()); } VolumePassword::~VolumePassword () { } void VolumePassword::AllocateBuffer () { if (!PasswordBuffer.IsAllocated ()) PasswordBuffer.Allocate (MaxSize); } void VolumePassword::CheckPortability () const { if (Unportable || !IsPortable()) throw UnportablePassword (SRC_POS); } void VolumePassword::Deserialize (shared_ptr stream) { Serializer sr (stream); uint64 passwordSize; sr.Deserialize ("PasswordSize", passwordSize); PasswordSize = static_cast (passwordSize); sr.Deserialize ("PasswordBuffer", BufferPtr (PasswordBuffer)); Buffer wipeBuffer (128 * 1024); sr.Deserialize ("WipeData", wipeBuffer); } bool VolumePassword::IsPortable () const { for (size_t i = 0; i < PasswordSize; i++) { if (PasswordBuffer[i] >= 0x7f || PasswordBuffer[i] < 0x20) return false; } return true; } void VolumePassword::Serialize (shared_ptr stream) const { Serializable::Serialize (stream); Serializer sr (stream); sr.Serialize ("PasswordSize", static_cast (PasswordSize)); sr.Serialize ("PasswordBuffer", ConstBufferPtr (PasswordBuffer)); // Wipe password from an eventual pipe buffer Buffer wipeBuffer (128 * 1024); wipeBuffer.Zero(); sr.Serialize ("WipeData", ConstBufferPtr (wipeBuffer)); } void VolumePassword::Set (const byte *password, size_t size) { AllocateBuffer (); if (size > MaxSize) throw PasswordTooLong (SRC_POS); PasswordBuffer.CopyFrom (ConstBufferPtr (password, size)); PasswordSize = size; Unportable = !IsPortable(); } void VolumePassword::Set (const wchar_t *password, size_t charCount) { if (charCount > MaxSize) throw PasswordTooLong (SRC_POS); union Conv { byte b[sizeof (wchar_t)]; wchar_t c; }; Conv conv; conv.c = L'A'; int lsbPos = -1; for (size_t i = 0; i < sizeof (conv.b); ++i) { if (conv.b[i] == L'A') { lsbPos = i; break; } } if (lsbPos == -1) throw ParameterIncorrect (SRC_POS); bool unportable = false; byte passwordBuf[MaxSize]; for (size_t i = 0; i < charCount; ++i) { conv.c = password[i]; passwordBuf[i] = conv.b[lsbPos]; for (int j = 0; j < (int) sizeof (wchar_t); ++j) { if (j != lsbPos && conv.b[j] != 0) unportable = true; } } Set (passwordBuf, charCount); if (unportable) Unportable = true; } void VolumePassword::Set (const ConstBufferPtr &password) { Set (password, password.Size()); } void VolumePassword::Set (const VolumePassword &password) { Set (password.DataPtr(), password.Size()); } TC_SERIALIZER_FACTORY_ADD_CLASS (VolumePassword); #define TC_EXCEPTION(TYPE) TC_SERIALIZER_FACTORY_ADD(TYPE) #undef TC_EXCEPTION_NODECL #define TC_EXCEPTION_NODECL(TYPE) TC_SERIALIZER_FACTORY_ADD(TYPE) TC_SERIALIZER_FACTORY_ADD_EXCEPTION_SET (PasswordException); } ='#n5'>5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173