Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 1 | // This file was extracted from the TCG Published |
| 2 | // Trusted Platform Module Library |
| 3 | // Part 4: Supporting Routines |
| 4 | // Family "2.0" |
| 5 | // Level 00 Revision 01.16 |
| 6 | // October 30, 2014 |
| 7 | |
| 8 | #include "InternalRoutines.h" |
| 9 | // |
| 10 | // |
| 11 | // Functions |
| 12 | // |
| 13 | // HierarchyPreInstall() |
| 14 | // |
| 15 | // This function performs the initialization functions for the hierarchy when the TPM is simulated. This |
| 16 | // function should not be called if the TPM is not in a manufacturing mode at the manufacturer, or in a |
| 17 | // simulated environment. |
| 18 | // |
| 19 | void |
| 20 | HierarchyPreInstall_Init( |
| 21 | void |
| 22 | ) |
| 23 | { |
| 24 | // Allow lockout clear command |
| 25 | gp.disableClear = FALSE; |
| 26 | // Initialize Primary Seeds |
| 27 | gp.EPSeed.t.size = PRIMARY_SEED_SIZE; |
| 28 | CryptGenerateRandom(PRIMARY_SEED_SIZE, gp.EPSeed.t.buffer); |
| 29 | gp.SPSeed.t.size = PRIMARY_SEED_SIZE; |
| 30 | CryptGenerateRandom(PRIMARY_SEED_SIZE, gp.SPSeed.t.buffer); |
| 31 | gp.PPSeed.t.size = PRIMARY_SEED_SIZE; |
| 32 | CryptGenerateRandom(PRIMARY_SEED_SIZE, gp.PPSeed.t.buffer); |
| 33 | // Initialize owner, endorsement and lockout auth |
| 34 | gp.ownerAuth.t.size = 0; |
| 35 | gp.endorsementAuth.t.size = 0; |
| 36 | gp.lockoutAuth.t.size = 0; |
| 37 | // Initialize owner, endorsement, and lockout policy |
| 38 | gp.ownerAlg = TPM_ALG_NULL; |
| 39 | gp.ownerPolicy.t.size = 0; |
| 40 | gp.endorsementAlg = TPM_ALG_NULL; |
| 41 | gp.endorsementPolicy.t.size = 0; |
| 42 | gp.lockoutAlg = TPM_ALG_NULL; |
| 43 | gp.lockoutPolicy.t.size = 0; |
| 44 | // Initialize ehProof, shProof and phProof |
| 45 | gp.phProof.t.size = PROOF_SIZE; |
| 46 | gp.shProof.t.size = PROOF_SIZE; |
| 47 | gp.ehProof.t.size = PROOF_SIZE; |
| 48 | CryptGenerateRandom(gp.phProof.t.size, gp.phProof.t.buffer); |
| 49 | CryptGenerateRandom(gp.shProof.t.size, gp.shProof.t.buffer); |
| 50 | CryptGenerateRandom(gp.ehProof.t.size, gp.ehProof.t.buffer); |
| 51 | // Write hierarchy data to NV |
| 52 | NvWriteReserved(NV_DISABLE_CLEAR, &gp.disableClear); |
| 53 | NvWriteReserved(NV_EP_SEED, &gp.EPSeed); |
| 54 | NvWriteReserved(NV_SP_SEED, &gp.SPSeed); |
| 55 | NvWriteReserved(NV_PP_SEED, &gp.PPSeed); |
| 56 | NvWriteReserved(NV_OWNER_AUTH, &gp.ownerAuth); |
| 57 | NvWriteReserved(NV_ENDORSEMENT_AUTH, &gp.endorsementAuth); |
| 58 | NvWriteReserved(NV_LOCKOUT_AUTH, &gp.lockoutAuth); |
| 59 | NvWriteReserved(NV_OWNER_ALG, &gp.ownerAlg); |
| 60 | NvWriteReserved(NV_OWNER_POLICY, &gp.ownerPolicy); |
| 61 | NvWriteReserved(NV_ENDORSEMENT_ALG, &gp.endorsementAlg); |
| 62 | NvWriteReserved(NV_ENDORSEMENT_POLICY, &gp.endorsementPolicy); |
| 63 | NvWriteReserved(NV_LOCKOUT_ALG, &gp.lockoutAlg); |
| 64 | NvWriteReserved(NV_LOCKOUT_POLICY, &gp.lockoutPolicy); |
| 65 | NvWriteReserved(NV_PH_PROOF, &gp.phProof); |
| 66 | NvWriteReserved(NV_SH_PROOF, &gp.shProof); |
| 67 | NvWriteReserved(NV_EH_PROOF, &gp.ehProof); |
| 68 | return; |
| 69 | } |
| 70 | // |
| 71 | // |
| 72 | // HierarchyStartup() |
| 73 | // |
| 74 | // This function is called at TPM2_Startup() to initialize the hierarchy related values. |
| 75 | // |
| 76 | void |
| 77 | HierarchyStartup( |
| 78 | STARTUP_TYPE type // IN: start up type |
| 79 | ) |
| 80 | { |
| 81 | // phEnable is SET on any startup |
| 82 | g_phEnable = TRUE; |
| 83 | // Reset platformAuth, platformPolicy; enable SH and EH at TPM_RESET and |
| 84 | // TPM_RESTART |
| 85 | if(type != SU_RESUME) |
| 86 | { |
| 87 | gc.platformAuth.t.size = 0; |
| 88 | gc.platformPolicy.t.size = 0; |
| 89 | // enable the storage and endorsement hierarchies and the platformNV |
| 90 | gc.shEnable = gc.ehEnable = gc.phEnableNV = TRUE; |
| 91 | } |
| 92 | // nullProof and nullSeed are updated at every TPM_RESET |
| 93 | if(type == SU_RESET) |
| 94 | { |
| 95 | gr.nullProof.t.size = PROOF_SIZE; |
| 96 | CryptGenerateRandom(gr.nullProof.t.size, |
| 97 | gr.nullProof.t.buffer); |
| 98 | gr.nullSeed.t.size = PRIMARY_SEED_SIZE; |
| 99 | CryptGenerateRandom(PRIMARY_SEED_SIZE, gr.nullSeed.t.buffer); |
| 100 | } |
| 101 | return; |
| 102 | } |
| 103 | // |
| 104 | // HierarchyGetProof() |
| 105 | // |
| 106 | // This function finds the proof value associated with a hierarchy.It returns a pointer to the proof value. |
| 107 | // |
| 108 | TPM2B_AUTH * |
| 109 | HierarchyGetProof( |
| 110 | TPMI_RH_HIERARCHY hierarchy // IN: hierarchy constant |
| 111 | ) |
| 112 | { |
| 113 | TPM2B_AUTH *auth = NULL; |
| 114 | switch(hierarchy) |
| 115 | { |
| 116 | case TPM_RH_PLATFORM: |
| 117 | // phProof for TPM_RH_PLATFORM |
| 118 | auth = &gp.phProof; |
| 119 | break; |
| 120 | case TPM_RH_ENDORSEMENT: |
| 121 | // ehProof for TPM_RH_ENDORSEMENT |
| 122 | auth = &gp.ehProof; |
| 123 | break; |
| 124 | case TPM_RH_OWNER: |
| 125 | // shProof for TPM_RH_OWNER |
| 126 | auth = &gp.shProof; |
| 127 | break; |
| 128 | case TPM_RH_NULL: |
| 129 | // nullProof for TPM_RH_NULL |
| 130 | auth = &gr.nullProof; |
| 131 | break; |
| 132 | default: |
| 133 | pAssert(FALSE); |
| 134 | break; |
| 135 | } |
| 136 | return auth; |
| 137 | } |
| 138 | // |
| 139 | // |
| 140 | // HierarchyGetPrimarySeed() |
| 141 | // |
| 142 | // This function returns the primary seed of a hierarchy. |
| 143 | // |
| 144 | TPM2B_SEED * |
| 145 | HierarchyGetPrimarySeed( |
| 146 | TPMI_RH_HIERARCHY hierarchy // IN: hierarchy |
| 147 | ) |
| 148 | { |
| 149 | TPM2B_SEED *seed = NULL; |
| 150 | switch(hierarchy) |
| 151 | { |
| 152 | case TPM_RH_PLATFORM: |
| 153 | seed = &gp.PPSeed; |
| 154 | break; |
| 155 | case TPM_RH_OWNER: |
| 156 | seed = &gp.SPSeed; |
| 157 | break; |
| 158 | case TPM_RH_ENDORSEMENT: |
| 159 | seed = &gp.EPSeed; |
| 160 | break; |
| 161 | case TPM_RH_NULL: |
| 162 | return &gr.nullSeed; |
| 163 | default: |
| 164 | pAssert(FALSE); |
| 165 | break; |
| 166 | } |
| 167 | return seed; |
| 168 | } |
| 169 | // |
| 170 | // |
| 171 | // HierarchyIsEnabled() |
| 172 | // |
| 173 | // This function checks to see if a hierarchy is enabled. |
| 174 | // |
| 175 | // NOTE: The TPM_RH_NULL hierarchy is always enabled. |
| 176 | // |
| 177 | // |
| 178 | // Return Value Meaning |
| 179 | // |
| 180 | // TRUE hierarchy is enabled |
| 181 | // FALSE hierarchy is disabled |
| 182 | // |
| 183 | BOOL |
| 184 | HierarchyIsEnabled( |
| 185 | TPMI_RH_HIERARCHY hierarchy // IN: hierarchy |
| 186 | ) |
| 187 | { |
| 188 | BOOL enabled = FALSE; |
| 189 | switch(hierarchy) |
| 190 | { |
| 191 | case TPM_RH_PLATFORM: |
| 192 | enabled = g_phEnable; |
| 193 | break; |
| 194 | case TPM_RH_OWNER: |
| 195 | enabled = gc.shEnable; |
| 196 | break; |
| 197 | case TPM_RH_ENDORSEMENT: |
| 198 | enabled = gc.ehEnable; |
| 199 | break; |
| 200 | case TPM_RH_NULL: |
| 201 | enabled = TRUE; |
| 202 | break; |
| 203 | default: |
| 204 | pAssert(FALSE); |
| 205 | break; |
| 206 | } |
| 207 | return enabled; |
| 208 | } |