The fragment indices part seqNum mixes: itself while seqNum ≤ seqLen, then a seeded random subset.
seqNum
seqNum ≤ seqLen
InvalidParameter unless seqNum and seqLen are integers ≥ 1 and checksum is a u32.
InvalidParameter
seqLen
checksum
u32
The fragment indices part
seqNummixes: itself whileseqNum ≤ seqLen, then a seeded random subset.