1 // Copyright 2015 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // THIS CODE IS GENERATED - DO NOT MODIFY! 6 7 #include "MemoryLib_fp.h" 8 #include "HMAC_fp.h" 9 10 UINT16 HMAC_Out_Marshal(HMAC_Out* source, 11 TPMI_ST_COMMAND_TAG tag, 12 BYTE** buffer, 13 INT32* size) { 14 UINT16 total_size = 0; 15 UINT32 parameter_size = 0; 16 BYTE* parameter_size_location; 17 INT32 parameter_size_size = sizeof(UINT32); 18 UINT32 num_response_handles = 0; 19 // Add parameter_size=0 to indicate size of the parameter area. Will be 20 // replaced later by computed parameter_size. 21 if (tag == TPM_ST_SESSIONS) { 22 parameter_size_location = *buffer; 23 // Don't add to total_size, but increment *buffer and decrement *size. 24 UINT32_Marshal(¶meter_size, buffer, size); 25 } 26 // Marshal response parameters. 27 total_size += TPM2B_DIGEST_Marshal(&source->outHMAC, buffer, size); 28 // Compute actual parameter_size. Don't add result to total_size. 29 if (tag == TPM_ST_SESSIONS) { 30 parameter_size = total_size - num_response_handles * sizeof(TPM_HANDLE); 31 UINT32_Marshal(¶meter_size, ¶meter_size_location, 32 ¶meter_size_size); 33 } 34 return total_size; 35 } 36 37 TPM_RC HMAC_In_Unmarshal(HMAC_In* target, 38 TPM_HANDLE request_handles[], 39 BYTE** buffer, 40 INT32* size) { 41 TPM_RC result = TPM_RC_SUCCESS; 42 // Get request handles from request_handles array. 43 target->handle = request_handles[0]; 44 // Unmarshal request parameters. 45 result = TPM2B_MAX_BUFFER_Unmarshal(&target->buffer, buffer, size); 46 if (result != TPM_RC_SUCCESS) { 47 return result; 48 } 49 result = TPMI_ALG_HASH_Unmarshal(&target->hashAlg, buffer, size, TRUE); 50 if (result != TPM_RC_SUCCESS) { 51 return result; 52 } 53 if ((result == TPM_RC_SUCCESS) && *size) { 54 result = TPM_RC_SIZE; 55 } 56 return result; 57 } 58 59 TPM_RC Exec_HMAC(TPMI_ST_COMMAND_TAG tag, 60 BYTE** request_parameter_buffer, 61 INT32* request_parameter_buffer_size, 62 TPM_HANDLE request_handles[], 63 UINT32* response_handle_buffer_size, 64 UINT32* response_parameter_buffer_size) { 65 TPM_RC result = TPM_RC_SUCCESS; 66 HMAC_In in; 67 HMAC_Out out; 68 #ifdef TPM_CC_HMAC 69 BYTE* response_buffer; 70 INT32 response_buffer_size; 71 UINT16 bytes_marshalled; 72 UINT16 num_response_handles = 0; 73 #endif 74 *response_handle_buffer_size = 0; 75 *response_parameter_buffer_size = 0; 76 // Unmarshal request parameters to input structure. 77 result = HMAC_In_Unmarshal(&in, request_handles, request_parameter_buffer, 78 request_parameter_buffer_size); 79 if (result != TPM_RC_SUCCESS) { 80 return result; 81 } 82 // Execute command. 83 result = TPM2_HMAC(&in, &out); 84 if (result != TPM_RC_SUCCESS) { 85 return result; 86 } 87 // Marshal output structure to global response buffer. 88 #ifdef TPM_CC_HMAC 89 response_buffer = MemoryGetResponseBuffer(TPM_CC_HMAC) + 10; 90 response_buffer_size = MAX_RESPONSE_SIZE - 10; 91 bytes_marshalled = 92 HMAC_Out_Marshal(&out, tag, &response_buffer, &response_buffer_size); 93 *response_handle_buffer_size = num_response_handles * sizeof(TPM_HANDLE); 94 *response_parameter_buffer_size = 95 bytes_marshalled - *response_handle_buffer_size; 96 return TPM_RC_SUCCESS; 97 #endif 98 return TPM_RC_COMMAND_CODE; 99 } 100
