+/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2013 The Chromium OS Authors.
* Coypright (c) 2013 Guntermann & Drunck GmbH
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __TPM_H
};
#define TPM_NV_PER_GLOBALLOCK (1U << 15)
+#define TPM_NV_PER_PPREAD (1U << 16)
#define TPM_NV_PER_PPWRITE (1U << 0)
#define TPM_NV_PER_READ_STCLEAR (1U << 31)
#define TPM_NV_PER_WRITE_STCLEAR (1U << 14)
+#define TPM_NV_PER_WRITEDEFINE (1U << 13)
+#define TPM_NV_PER_WRITEALL (1U << 12)
enum {
TPM_PUBEK_SIZE = 256,
*/
uint32_t tpm_flush_specific(uint32_t key_handle, uint32_t resource_type);
+#ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
+/**
+ * Search for a key by usage AuthData and the hash of the parent's pub key.
+ *
+ * @param auth Usage auth of the key to search for
+ * @param pubkey_digest SHA1 hash of the pub key structure of the key
+ * @param[out] handle The handle of the key (Non-null iff found)
+ * @return 0 if key was found in TPM; != 0 if not.
+ */
+uint32_t tpm_find_key_sha1(const uint8_t auth[20], const uint8_t
+ pubkey_digest[20], uint32_t *handle);
+#endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
+
+/**
+ * Read random bytes from the TPM RNG. The implementation deals with the fact
+ * that the TPM may legally return fewer bytes than requested by retrying
+ * until @p count bytes have been received.
+ *
+ * @param data output buffer for the random bytes
+ * @param count size of output buffer
+ * @return return code of the operation
+ */
+uint32_t tpm_get_random(void *data, uint32_t count);
+
#endif /* __TPM_H */