1 files changed, 71 insertions, 0 deletions
diff --git a/src/cryptsetup/cryptsetup-tokens/luks2-tpm2.c b/src/cryptsetup/cryptsetup-tokens/luks2-tpm2.c
new file mode 100644
index 0000000..be496d4
--- /dev/null
+++ b/src/cryptsetup/cryptsetup-tokens/luks2-tpm2.c
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "ask-password-api.h"
+#include "env-util.h"
+#include "hexdecoct.h"
+#include "json.h"
+#include "log.h"
+#include "luks2-tpm2.h"
+#include "parse-util.h"
+#include "random-util.h"
+#include "strv.h"
+#include "tpm2-util.h"
+
+int acquire_luks2_key(
+                const char *device,
+                uint32_t hash_pcr_mask,
+                uint16_t pcr_bank,
+                const void *pubkey,
+                size_t pubkey_size,
+                uint32_t pubkey_pcr_mask,
+                const char *signature_path,
+                const char *pin,
+                uint16_t primary_alg,
+                const void *key_data,
+                size_t key_data_size,
+                const void *policy_hash,
+                size_t policy_hash_size,
+                TPM2Flags flags,
+                void **ret_decrypted_key,
+                size_t *ret_decrypted_key_size) {
+
+        _cleanup_(json_variant_unrefp) JsonVariant *signature_json = NULL;
+        _cleanup_free_ char *auto_device = NULL;
+        int r;
+
+        assert(ret_decrypted_key);
+        assert(ret_decrypted_key_size);
+
+        if (!device) {
+                r = tpm2_find_device_auto(LOG_DEBUG, &auto_device);
+                if (r == -ENODEV)
+                        return -EAGAIN; /* Tell the caller to wait for a TPM2 device to show up */
+                if (r < 0)
+                        return r;
+
+                device = auto_device;
+        }
+
+        if ((flags & TPM2_FLAGS_USE_PIN) && !pin)
+                return -ENOANO;
+
+        if (pubkey_pcr_mask != 0) {
+                r = tpm2_load_pcr_signature(signature_path, &signature_json);
+                if (r < 0)
+                        return r;
+        }
+
+        return tpm2_unseal(
+                        device,
+                        hash_pcr_mask,
+                        pcr_bank,
+                        pubkey, pubkey_size,
+                        pubkey_pcr_mask,
+                        signature_json,
+                        pin,
+                        primary_alg,
+                        key_data, key_data_size,
+                        policy_hash, policy_hash_size,
+                        ret_decrypted_key, ret_decrypted_key_size);
+}