1 files changed, 39 insertions, 0 deletions
diff --git a/firmware/2lib/include/2packed_key.h b/firmware/2lib/include/2packed_key.h
new file mode 100644
index 00000000..09c73553
--- /dev/null
+++ b/firmware/2lib/include/2packed_key.h
@@ -0,0 +1,39 @@
+/* Copyright 2021 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Functions related to unpacking keys and key buffers.
+ */
+
+#ifndef VBOOT_REFERENCE_2PACKED_KEY_H_
+#define VBOOT_REFERENCE_2PACKED_KEY_H_
+
+/**
+ * Unpack a vboot1-format key buffer for use in verification
+ *
+ * The elements of the unpacked key will point into the source buffer, so don't
+ * free the source buffer until you're done with the key.
+ *
+ * @param key		Destintion for unpacked key
+ * @param buf		Source buffer containing packed key
+ * @param size		Size of buffer in bytes
+ * @return VB2_SUCCESS, or non-zero error code if error.
+ */
+vb2_error_t vb2_unpack_key_buffer(struct vb2_public_key *key,
+				  const uint8_t *buf, uint32_t size);
+
+/**
+ * Unpack a vboot1-format key for use in verification
+ *
+ * The elements of the unpacked key will point into the source packed key, so
+ * don't free the source until you're done with the public key.
+ *
+ * @param key		Destintion for unpacked key
+ * @param packed_key	Source packed key
+ * @param size		Size of buffer in bytes
+ * @return VB2_SUCCESS, or non-zero error code if error.
+ */
+vb2_error_t vb2_unpack_key(struct vb2_public_key *key,
+			   const struct vb2_packed_key *packed_key);
+
+#endif  /* VBOOT_REFERENCE_2PACKED_KEY_H_ */