Starts the integrity root of an image: sha256 over the metadata that steers a restore, then each
chunk's seq, inflated length, stored length and sha256 in order.
It covers the stored (deflated) bytes, so a verify never inflates, and the writer and the
verifier share this one definition. The FNV digests in the rows prove nothing against a writer
that can also write them.
Starts the integrity root of an image: sha256 over the metadata that steers a restore, then each chunk's
seq, inflated length, stored length and sha256 in order.It covers the stored (deflated) bytes, so a verify never inflates, and the writer and the verifier share this one definition. The FNV digests in the rows prove nothing against a writer that can also write them.