From 50836075261339c9d0ff4f49b743088461c6399e Mon Sep 17 00:00:00 2001
From: bbm <brian.maranville@nist.gov>
Date: Wed, 22 Feb 2023 09:41:25 -0500
Subject: [PATCH] add optional content hash to File object

---
 orsopy/fileio/base.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/orsopy/fileio/base.py b/orsopy/fileio/base.py
index 8e3db140..6c352d44 100644
--- a/orsopy/fileio/base.py
+++ b/orsopy/fileio/base.py
@@ -724,6 +724,16 @@ def to_sigma(self):
             return 1.0
 
 
+@orsodataclass
+class ContentHash(Header):
+    """
+    A hash of some content, using standard algorithms
+    """
+
+    digest: str
+    algorithm: Literal["sha1", "sha256", "sha384", "sha512", "sha3_256", "sha3_512"]
+
+
 @orsodataclass
 class File(Header):
     """
@@ -739,6 +749,7 @@ class File(Header):
             " itself"
         },
     )
+    hash: Optional[ContentHash] = None
 
     def __post_init__(self):
         """