/* SPDX-License-Identifier: LGPL-2.1-or-later */ #pragma once #include #include "json.h" #include "macro.h" typedef enum TPM2Flags { TPM2_FLAGS_USE_PIN = 1 << 0, } TPM2Flags; #if HAVE_TPM2 #include #include #include extern TSS2_RC (*sym_Esys_Create)(ESYS_CONTEXT *esysContext, ESYS_TR parentHandle, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, const TPM2B_SENSITIVE_CREATE *inSensitive, const TPM2B_PUBLIC *inPublic, const TPM2B_DATA *outsideInfo, const TPML_PCR_SELECTION *creationPCR, TPM2B_PRIVATE **outPrivate, TPM2B_PUBLIC **outPublic, TPM2B_CREATION_DATA **creationData, TPM2B_DIGEST **creationHash, TPMT_TK_CREATION **creationTicket); extern TSS2_RC (*sym_Esys_CreatePrimary)(ESYS_CONTEXT *esysContext, ESYS_TR primaryHandle, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, const TPM2B_SENSITIVE_CREATE *inSensitive, const TPM2B_PUBLIC *inPublic, const TPM2B_DATA *outsideInfo, const TPML_PCR_SELECTION *creationPCR, ESYS_TR *objectHandle, TPM2B_PUBLIC **outPublic, TPM2B_CREATION_DATA **creationData, TPM2B_DIGEST **creationHash, TPMT_TK_CREATION **creationTicket); extern void (*sym_Esys_Finalize)(ESYS_CONTEXT **context); extern TSS2_RC (*sym_Esys_FlushContext)(ESYS_CONTEXT *esysContext, ESYS_TR flushHandle); extern void (*sym_Esys_Free)(void *ptr); extern TSS2_RC (*sym_Esys_GetCapability)(ESYS_CONTEXT *esysContext, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, TPM2_CAP capability, UINT32 property, UINT32 propertyCount, TPMI_YES_NO *moreData, TPMS_CAPABILITY_DATA **capabilityData); extern TSS2_RC (*sym_Esys_GetRandom)(ESYS_CONTEXT *esysContext, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, UINT16 bytesRequested, TPM2B_DIGEST **randomBytes); extern TSS2_RC (*sym_Esys_Initialize)(ESYS_CONTEXT **esys_context, TSS2_TCTI_CONTEXT *tcti, TSS2_ABI_VERSION *abiVersion); extern TSS2_RC (*sym_Esys_Load)(ESYS_CONTEXT *esysContext, ESYS_TR parentHandle, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, const TPM2B_PRIVATE *inPrivate, const TPM2B_PUBLIC *inPublic, ESYS_TR *objectHandle); extern TSS2_RC (*sym_Esys_PCR_Read)(ESYS_CONTEXT *esysContext, ESYS_TR shandle1,ESYS_TR shandle2, ESYS_TR shandle3, const TPML_PCR_SELECTION *pcrSelectionIn, UINT32 *pcrUpdateCounter, TPML_PCR_SELECTION **pcrSelectionOut, TPML_DIGEST **pcrValues); extern TSS2_RC (*sym_Esys_PolicyAuthValue)(ESYS_CONTEXT *esysContext, ESYS_TR policySession, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3); extern TSS2_RC (*sym_Esys_PolicyGetDigest)(ESYS_CONTEXT *esysContext, ESYS_TR policySession, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, TPM2B_DIGEST **policyDigest); extern TSS2_RC (*sym_Esys_PolicyPCR)(ESYS_CONTEXT *esysContext, ESYS_TR policySession, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, const TPM2B_DIGEST *pcrDigest, const TPML_PCR_SELECTION *pcrs); extern TSS2_RC (*sym_Esys_StartAuthSession)(ESYS_CONTEXT *esysContext, ESYS_TR tpmKey, ESYS_TR bind, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, const TPM2B_NONCE *nonceCaller, TPM2_SE sessionType, const TPMT_SYM_DEF *symmetric, TPMI_ALG_HASH authHash, ESYS_TR *sessionHandle); extern TSS2_RC (*sym_Esys_Startup)(ESYS_CONTEXT *esysContext, TPM2_SU startupType); extern TSS2_RC (*sym_Esys_TRSess_SetAttributes)(ESYS_CONTEXT *esysContext, ESYS_TR session, TPMA_SESSION flags, TPMA_SESSION mask); extern TSS2_RC (*sym_Esys_TR_SetAuth)(ESYS_CONTEXT *esysContext, ESYS_TR handle, TPM2B_AUTH const *authValue); extern TSS2_RC (*sym_Esys_Unseal)(ESYS_CONTEXT *esysContext, ESYS_TR itemHandle, ESYS_TR shandle1, ESYS_TR shandle2, ESYS_TR shandle3, TPM2B_SENSITIVE_DATA **outData); extern const char* (*sym_Tss2_RC_Decode)(TSS2_RC rc); extern TSS2_RC (*sym_Tss2_MU_TPM2B_PRIVATE_Marshal)(TPM2B_PRIVATE const *src, uint8_t buffer[], size_t buffer_size, size_t *offset); extern TSS2_RC (*sym_Tss2_MU_TPM2B_PRIVATE_Unmarshal)(uint8_t const buffer[], size_t buffer_size, size_t *offset, TPM2B_PRIVATE *dest); extern TSS2_RC (*sym_Tss2_MU_TPM2B_PUBLIC_Marshal)(TPM2B_PUBLIC const *src, uint8_t buffer[], size_t buffer_size, size_t *offset); extern TSS2_RC (*sym_Tss2_MU_TPM2B_PUBLIC_Unmarshal)(uint8_t const buffer[], size_t buffer_size, size_t *offset, TPM2B_PUBLIC *dest); int dlopen_tpm2(void); int tpm2_seal(const char *device, uint32_t pcr_mask, const char *pin, void **ret_secret, size_t *ret_secret_size, void **ret_blob, size_t *ret_blob_size, void **ret_pcr_hash, size_t *ret_pcr_hash_size, uint16_t *ret_pcr_bank, uint16_t *ret_primary_alg); int tpm2_unseal(const char *device, uint32_t pcr_mask, uint16_t pcr_bank, uint16_t primary_alg, const void *blob, size_t blob_size, const void *pcr_hash, size_t pcr_hash_size, const char *pin, void **ret_secret, size_t *ret_secret_size); #endif int tpm2_list_devices(void); int tpm2_find_device_auto(int log_level, char **ret); int tpm2_parse_pcrs(const char *s, uint32_t *ret); int tpm2_make_luks2_json(int keyslot, uint32_t pcr_mask, uint16_t pcr_bank, uint16_t primary_alg, const void *blob, size_t blob_size, const void *policy_hash, size_t policy_hash_size, TPM2Flags flags, JsonVariant **ret); #define TPM2_PCRS_MAX 24 /* Default to PCR 7 only */ #define TPM2_PCR_MASK_DEFAULT (UINT32_C(1) << 7) /* We want the helpers below to work also if TPM2 libs are not available, hence define these four defines if * they are missing. */ #ifndef TPM2_ALG_SHA256 #define TPM2_ALG_SHA256 0xB #endif #ifndef TPM2_ALG_SHA1 #define TPM2_ALG_SHA1 0x4 #endif #ifndef TPM2_ALG_ECC #define TPM2_ALG_ECC 0x23 #endif #ifndef TPM2_ALG_RSA #define TPM2_ALG_RSA 0x1 #endif const char *tpm2_pcr_bank_to_string(uint16_t bank); int tpm2_pcr_bank_from_string(const char *bank); const char *tpm2_primary_alg_to_string(uint16_t bank); int tpm2_primary_alg_from_string(const char *alg); typedef struct { uint32_t search_pcr_mask; const char *device; } systemd_tpm2_plugin_params; typedef enum Tpm2Support { /* NOTE! The systemd-creds tool returns these flags 1:1 as exit status. Hence these flags are pretty * much ABI! Hence, be extra careful when changing/extending these definitions. */ TPM2_SUPPORT_NONE = 0, /* no support */ TPM2_SUPPORT_FIRMWARE = 1 << 0, /* firmware reports TPM2 was used */ TPM2_SUPPORT_DRIVER = 1 << 1, /* the kernel has a driver loaded for it */ TPM2_SUPPORT_SYSTEM = 1 << 2, /* we support it ourselves */ TPM2_SUPPORT_FULL = TPM2_SUPPORT_FIRMWARE|TPM2_SUPPORT_DRIVER|TPM2_SUPPORT_SYSTEM, } Tpm2Support; Tpm2Support tpm2_support(void);