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/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2010 IBM Corporation * Author: David Safford */ #ifndef _KEYS_TRUSTED_TYPE_H #define _KEYS_TRUSTED_TYPE_H #include #include #include #ifdef pr_fmt #undef pr_fmt #endif #define pr_fmt(fmt) "trusted_key: " fmt #define MIN_KEY_SIZE 32 #define MAX_KEY_SIZE 128 #define MAX_BLOB_SIZE 512 #define MAX_PCRINFO_SIZE 64 #define MAX_DIGEST_SIZE 64 struct trusted_key_payload { struct rcu_head rcu; unsigned int key_len; unsigned int blob_len; unsigned char migratable; unsigned char old_format; unsigned char key[MAX_KEY_SIZE + 1]; unsigned char blob[MAX_BLOB_SIZE]; }; struct trusted_key_options { uint16_t keytype; uint32_t keyhandle; unsigned char keyauth[TPM_DIGEST_SIZE]; uint32_t blobauth_len; unsigned char blobauth[TPM_DIGEST_SIZE]; uint32_t pcrinfo_len; unsigned char pcrinfo[MAX_PCRINFO_SIZE]; int pcrlock; uint32_t hash; uint32_t policydigest_len; unsigned char policydigest[MAX_DIGEST_SIZE]; uint32_t policyhandle; }; struct trusted_key_ops { /* * flag to indicate if trusted key implementation supports migration * or not. */ unsigned char migratable; /* Initialize key interface. */ int (*init)(void); /* Seal a key. */ int (*seal)(struct trusted_key_payload *p, char *datablob); /* Unseal a key. */ int (*unseal)(struct trusted_key_payload *p, char *datablob); /* Optional: Get a randomized key. */ int (*get_random)(unsigned char *key, size_t key_len); /* Exit key interface. */ void (*exit)(void); }; struct trusted_key_source { char *name; struct trusted_key_ops *ops; }; extern struct key_type key_type_trusted; #define TRUSTED_DEBUG 0 #if TRUSTED_DEBUG static inline void dump_payload(struct trusted_key_payload *p) { pr_info("key_len %d\n", p->key_len); print_hex_dump(KERN_INFO, "key ", DUMP_PREFIX_