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Unlike other fixed content storage solutions, Swarm allows a user or application to upgrade a hash algorithm for an existing individual integrity seal. This is done performed by issuing a READ request with the name or UUID, the current hash type and hash, and then specifying a different, presumably stronger, hash type in the newhashtype query parameter.

Info

Important

Upgrade the hash promptly , before any exploit of the old algorithm becomes well known and available.

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