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+# 8. SBOM storage/retrieval without modification
+
+Date: 2024-10-16
+
+## Status
+
+Accepted
+
+## Context
+
+Documents imported into/exported by bomctl may have signatures associated with them, and we should support a way for users
+to import an sbom and export the sbom in its' original form so that previous signatures can be validated. This is especially
+true for documents that were not modified by the user while stored in the cache and are exported in the original format
+they were imported in.
+
+## Decision
+
+### Storage
+
+The storage in original format portion of this ADR is already implemented. Current behavior for all sbom documents added to the
+local cache is to store the original document bytes as a unique annotation. Similarly, the original format of the sbom is stored
+as a unique annotation at the time that its added to the cache.
+
+- Outstanding Updates:
+  - A protobom [feature](https://github.com/protobom/protobom/issues/213) to capture the origin format during deserialization.
+
+- Optional improvements:
+  - Store format version as an annotation
+    - Do we want to be as granular as making sure the format version matches desired output format version before using source?
+
+### Retrieval
+
+TLDR:
+
+- **Default Behavior:** If a document has been unaltered in the cache, bomctl will always output original document content if
+desired format matches origin format.
+- **Flag Behavior:** If the command contains `--original` flag to export or push cmd, the original document content will be used regardless if
+the document had been altered in the cache or a different format is requested. (maybe we have a 'original' format type?)
+
+Some Scenarios:
+Context: A user imported multiple documents and then exports/pushes them with varying document states.
+
+- All Modified Documents:
+  - Modified Documents will be exported/pushed in their modified state in whichever format designated by the command.
+  - **Exception:** if the command contains the `--original` flag, all documents will be exported as their original content
+    in their original format.
+- All Original Documents:
+  - All original (unmodified) documents will be exported as their original content if the export format value matches the
+    original format of the document, else will be exported as the format specified by the command.
+  - **Exception:** if the command contains the `--original` flag, all documents will be exported as their original content
+    in their original format.
+- Mixed State: (Some modified, some unmodified)
+  - All original (unmodified) documents will be exported as their original content if the export format value matches the
+    original format of the document, else will be exported as the format specified by the command.
+  - All modified documents will be will be exported/pushed in their modified state in whichever format designated by the command.
+  - **Exception:** if the command contains the `--original` flag, all documents will be exported as their original content
+    in their original format.
+
+| Modified | Format Matches | `--original` | Output           |
+|----------|----------------|--------------|------------------|
+| False    | True           | True         | Origin Content   |
+| False    | True           | False        | Origin Content   |
+| False    | False          | True         | Origin Content   |
+| False    | False          | False        | Updated Format   |
+| True     | True           | True         | Origin Content   |
+| True     | True           | False        | Modified Content |
+| True     | False          | True         | Origin Content   |
+| True     | False          | False        | Modified Content |
+
+Questions:
+
+- If a cyclonedx 1.5 document is imported, and user requests an export of a cyclonedx 1.6 formatted document which is unmodified, would we:
+  - Export a 1.5 doc? (1.6 is a super set of 1.5 so it's technically valid), but:
+    - Users may be confused to find a 1.5 document when they requested 1.6.
+    - This also may have problems dopwn the line when using said document, if a tool is expecting a 1.6 (or doesn't support 1.5)
+  - Implicitly convert to 1.6 and export as requested?
+    - Causes the origin content to be exported in a slimmer window
+    - Users would need to be very specific to get original content without `--original` flag
+    - Implies the need to track/annotate origin format version
+
+- If a cyclonedx xml document is imported, and user requests an export of a cyclonedx json document which is unmodified, would we:
+  - Export an xml document?
+  - Internally convert origin content to json and export?
+    - Implies the need to track/annotate origin encoding
+  - Output bomctl document as json?
+    - Would this be lossless?
+    - Implies the need to track/annotate origin encoding
+
+## Consequences
+
+- Users will be able to export sbom documents in original format
+  - To preserve signature validity.
+  - To archive/catalog original documents acquired from the supply chain.
+- Users may want to output to original format while including changes made in bomctl, which won't happen with above solution.
+- Users may be surprised that `--original` ignores and modifications made in bomctl and will not be reflected in exported document.
+  - Although the default functionality and behavior listed above seems intuitive.