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added suggestion to support MD5E keys that omit file size, and/or support attaching checksums to URL/WORM keys in metadata

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Ilya_Shlyakhter 2019-01-08 20:12:38 +00:00 • committed by admin
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Would it be hard to support MD5E keys that omit the -sSIZE part, the way this is allowed for URL keys? I have a use case where I have the MD5 hashes and filenames of files stored in the cloud, but not their sizes, and want to construct keys for these files to use with setpresentkey and registerurl. I could construct URL keys, but then I lose the error-checking and have to set annex.security.allow-unverified-downloads . Or maybe, extend URL keys to permit an -hMD5 hash to be part of the key?
Another (and more generally useful) solution would be [[todo/alternate_keys_for_same_content/]]. Then can start with a URL-based key but then attach an MD5 to it as metadata, and have the key treated as a checksum-containing key, without needing to migrate the contents to a new key.