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Add verify cert callback function for DiceTcbInfo.
Refer the spec https://trustedcomputinggroup.org/resource/dice-attestation-architecture/ add verify cert callback function for Cert extentison DiceTcbInfo check. Signed-off-by: Wenxing Hou <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| cmake_minimum_required(VERSION 2.8.12) | ||
|
|
||
| INCLUDE_DIRECTORIES(${LIBSPDM_DIR}/include | ||
| ${LIBSPDM_DIR}/unit_test/include | ||
| ${LIBSPDM_DIR}/os_stub/spdm_device_secret_lib_sample | ||
| ${LIBSPDM_DIR}/unit_test/cmockalib/cmocka/include | ||
| ${LIBSPDM_DIR}/unit_test/cmockalib/cmocka/include/cmockery | ||
| ${LIBSPDM_DIR}/unit_test/spdm_unit_test_common | ||
| ${LIBSPDM_DIR}/os_stub/include | ||
| ${LIBSPDM_DIR}/os_stub | ||
| ) | ||
|
|
||
| if(CMAKE_SYSTEM_NAME MATCHES "Windows") | ||
| if((TOOLCHAIN STREQUAL "VS2015") OR (TOOLCHAIN STREQUAL "VS2019") OR (TOOLCHAIN STREQUAL "VS2022")) | ||
| ADD_COMPILE_OPTIONS(/wd4819) | ||
| endif() | ||
| endif() | ||
|
|
||
| SET(src_test_spdm_callback | ||
| test_spdm_callback.c | ||
| spdm_cert_verify_callback.c | ||
| ${LIBSPDM_DIR}/unit_test/spdm_unit_test_common/support.c | ||
| ${LIBSPDM_DIR}/unit_test/spdm_unit_test_common/algo.c | ||
| ) | ||
|
|
||
| SET(test_spdm_callback_LIBRARY | ||
| memlib | ||
| debuglib | ||
| spdm_crypt_lib | ||
| ${CRYPTO_LIB_PATHS} | ||
| cryptlib_${CRYPTO} | ||
| rnglib | ||
| malloclib | ||
| cmockalib | ||
| spdm_device_secret_lib_sample | ||
| spdm_crypt_ext_lib | ||
| spdm_common_lib | ||
| spdm_secured_message_lib | ||
| ) | ||
|
|
||
| if(TOOLCHAIN STREQUAL "ARM_DS2022") | ||
| SET(test_spdm_callback_LIBRARY ${test_spdm_callback_LIBRARY} armbuild_lib) | ||
| endif() | ||
|
|
||
| if((TOOLCHAIN STREQUAL "KLEE") OR (TOOLCHAIN STREQUAL "CBMC")) | ||
| ADD_EXECUTABLE(test_spdm_callback | ||
| ${src_test_spdm_callback} | ||
| $<TARGET_OBJECTS:memlib> | ||
| $<TARGET_OBJECTS:debuglib> | ||
| $<TARGET_OBJECTS:spdm_crypt_lib> | ||
| $<TARGET_OBJECTS:${CRYPTO_LIB_PATHS}> | ||
| $<TARGET_OBJECTS:rnglib> | ||
| $<TARGET_OBJECTS:cryptlib_${CRYPTO}> | ||
| $<TARGET_OBJECTS:malloclib> | ||
| ) | ||
| else() | ||
| ADD_EXECUTABLE(test_spdm_callback ${src_test_spdm_callback}) | ||
| TARGET_LINK_LIBRARIES(test_spdm_callback ${test_spdm_callback_LIBRARY}) | ||
| endif() |
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unit_test/test_spdm_callback/spdm_cert_verify_callback.c
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,250 @@ | ||
| /** | ||
| * Copyright Notice: | ||
| * Copyright 2024 DMTF. All rights reserved. | ||
| * License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md | ||
| **/ | ||
|
|
||
| #include "spdm_unit_test.h" | ||
| #include "library/spdm_common_lib.h" | ||
| #include "spdm_crypt_ext_lib/spdm_crypt_ext_lib.h" | ||
|
|
||
| /** | ||
| * tcg-dice-TcbInfo OID: 2.23.133.5.4.1 | ||
| * https://trustedcomputinggroup.org/wp-content/uploads/DICE-Attestation-Architecture-Version-1.1-Revision-18_pub.pdf | ||
| **/ | ||
| uint8_t m_libspdm_tcg_dice_tcbinfo_oid[] = {0x67, 0x81, 0x05, 0x05, 0x04, 0x01}; | ||
|
|
||
| bool m_libspdm_must_have_dice_tcb_info = false; | ||
|
|
||
| /*reference DiceTcbinfo*/ | ||
|
|
||
| /*vendor: INTC*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_vendor[] = {0x49, 0x4E, 0x54, 0x43}; | ||
| /*model: S3M GNR*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_model[] = {0x53, 0x33, 0x4D, 0x20, 0x47, 0x4E, 0x52}; | ||
| /*version: 000200000000008B*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_version[] = {0x30, 0x30, 0x30, 0x32, 0x30, 0x30, 0x30, 0x30, 0x30, | ||
| 0x30, 0x30, 0x30, 0x30, 0x30, 0x38, 0x42}; | ||
| /*svn*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_svn[] = {0x01}; | ||
| /*layer*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_layer[] = {0x01}; | ||
| /*fwids*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_fwids[] = {0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, | ||
| 0x02, 0x02, 0x04, 0x30, 0x6B, 0x44, 0x7B, 0x5E, 0x99, 0x21, 0x0A, 0x58, 0x8A, 0x7B, 0x31, | ||
| 0x7D, 0xBA, 0x2D, 0x4A, 0x7F, 0x75, 0xE6, 0x97, 0xF2, 0x07, 0xE0, 0xC2, 0x99, 0x78, 0xF3, | ||
| 0xF6, 0x2B, 0x53, 0xF5, 0xBE, 0xEB, 0x73, 0xF0, 0x37, 0xB8, 0x79, 0xC1, 0xFF, 0x76, 0x2A, | ||
| 0x3A, 0x39, 0xCA, 0xE2, 0x8C, 0xF0, 0x56}; | ||
| /*type*/ | ||
| uint8_t m_libspdm_dice_tcbinfo_type[] = {0x46, 0x69, 0x72, 0x6D, 0x77, 0x61, 0x72, 0x65, 0x20, | ||
| 0x44, 0x69, 0x67, 0x65, 0x73, 0x74}; | ||
|
|
||
| /*verify cert DiceTcbInfo extension*/ | ||
| bool libspdm_verify_cert_dicetcbinfo(const void *cert, size_t cert_size) { | ||
| bool result; | ||
| uint8_t spdm_dice_tcb_info[256]; | ||
| size_t spdm_dice_tcb_info_size; | ||
| uint8_t *ptr; | ||
| int32_t length; | ||
| size_t obj_len; | ||
| uint8_t *end; | ||
|
|
||
| spdm_dice_tcb_info_size = 256; | ||
| result = libspdm_x509_get_extension_data(cert, cert_size, | ||
| m_libspdm_tcg_dice_tcbinfo_oid, | ||
| sizeof(m_libspdm_tcg_dice_tcbinfo_oid), | ||
| spdm_dice_tcb_info, &spdm_dice_tcb_info_size); | ||
| if (!result) { | ||
| return false; | ||
| } else if (spdm_dice_tcb_info_size == 0) { | ||
| if (m_libspdm_must_have_dice_tcb_info) { | ||
| return false; | ||
| } else { | ||
| return true; | ||
| } | ||
| } | ||
|
|
||
| length = (int32_t)spdm_dice_tcb_info_size; | ||
| ptr = (uint8_t*)(size_t)spdm_dice_tcb_info; | ||
| obj_len = 0; | ||
| end = ptr + length; | ||
|
|
||
| /*get DiceTcbInfo*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_SEQUENCE | LIBSPDM_CRYPTO_ASN1_CONSTRUCTED); | ||
| if (!result) { | ||
| return false; | ||
| } | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_SEQUENCE | LIBSPDM_CRYPTO_ASN1_CONSTRUCTED); | ||
| if (!result) { | ||
| return false; | ||
| } | ||
|
|
||
| /*vendor*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_vendor)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_vendor, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*model*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 1); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_model)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_model, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*version*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 2); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_version)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_version, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*svn*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 3); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_svn)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_svn, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*layer*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 4); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_layer)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_layer, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*index*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 5); | ||
| if (result) { | ||
| ptr += obj_len; | ||
| } | ||
| /*fwids*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC | | ||
| LIBSPDM_CRYPTO_ASN1_CONSTRUCTED + 6); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_fwids)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_fwids, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*flags*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 7); | ||
| if (result) { | ||
| ptr += obj_len; | ||
| } | ||
| /*vendorInfo*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 8); | ||
| if (result) { | ||
| ptr += obj_len; | ||
| } | ||
| /*type*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 9); | ||
| if (result) { | ||
| if ((obj_len != sizeof(m_libspdm_dice_tcbinfo_type)) || | ||
| (!libspdm_consttime_is_mem_equal(ptr, m_libspdm_dice_tcbinfo_type, obj_len))) { | ||
| return false; | ||
| } | ||
| ptr += obj_len; | ||
| } | ||
| /*flagMask*/ | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_CONTEXT_SPECIFIC + 10); | ||
| if (result) { | ||
| ptr += obj_len; | ||
| } | ||
|
|
||
| if (ptr == end) { | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
|
|
||
| /*callback function for verifying cert_chain DiceTcbInfo extension*/ | ||
| bool libspdm_verify_spdm_cert_chain_with_dice(void *spdm_context, uint8_t slot_id, | ||
| size_t cert_chain_size, const void *cert_chain, | ||
| const void **trust_anchor, | ||
| size_t *trust_anchor_size) | ||
| { | ||
| bool result; | ||
| libspdm_context_t *context; | ||
| const uint8_t *cert_chain_data; | ||
| size_t cert_chain_data_size; | ||
| size_t hash_size; | ||
| uint8_t *ptr; | ||
| uint8_t *tem_ptr; | ||
| int32_t length; | ||
| size_t obj_len; | ||
| uint8_t *end; | ||
|
|
||
| /*verify peer cert chain integrity*/ | ||
| result = libspdm_verify_peer_cert_chain_buffer_integrity(spdm_context, cert_chain, | ||
| cert_chain_size); | ||
| if (!result) { | ||
| return false; | ||
| } | ||
|
|
||
| /*verify peer cert chain authority*/ | ||
| result = libspdm_verify_peer_cert_chain_buffer_authority(spdm_context, cert_chain, | ||
| cert_chain_size, trust_anchor, | ||
| trust_anchor_size); | ||
| if (!result) { | ||
| return false; | ||
| } | ||
|
|
||
| context = spdm_context; | ||
| hash_size = libspdm_get_hash_size(context->connection_info.algorithm.base_hash_algo); | ||
|
|
||
| cert_chain_data = (const uint8_t *)cert_chain + sizeof(spdm_cert_chain_t) + hash_size; | ||
| cert_chain_data_size = cert_chain_size - sizeof(spdm_cert_chain_t) - hash_size; | ||
|
|
||
| length = (int32_t)cert_chain_data_size; | ||
| ptr = (uint8_t*)(size_t)cert_chain_data; | ||
| obj_len = 0; | ||
| end = ptr + length; | ||
|
|
||
| while (ptr < end) { | ||
| tem_ptr = ptr; | ||
| result = libspdm_asn1_get_tag(&ptr, end, &obj_len, | ||
| LIBSPDM_CRYPTO_ASN1_SEQUENCE | LIBSPDM_CRYPTO_ASN1_CONSTRUCTED); | ||
| if (result) { | ||
| /*verify Dice TCB info*/ | ||
| result = libspdm_verify_cert_dicetcbinfo(tem_ptr, obj_len + (ptr - tem_ptr)); | ||
| if (!result) { | ||
| return false; | ||
| } | ||
| /* Move to next cert*/ | ||
| ptr += obj_len; | ||
| } | ||
| } | ||
|
|
||
| if (ptr == end) { | ||
| return true; | ||
| } else { | ||
| return false; | ||
| } | ||
| } |
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