Priority
P1
- Go implementation for reading and writing data segment index
- See https://github.com/filecoin-project/FIPs/blob/9a3bfe48e75bc6d34329df8653cb6f431efc967d/FRCs/frc-verifiable-data-aggregation.md#data-segment-index
- Produce index entries in Fr32 padded format based on inputs (CommDS, offset, length) computing the checksum
- Read index entries in Fr32 padded format, check their checksum
- Read the whole index from Fr32 padded format, find valid entries and output their content
- Take in an array of (CommDS, offset, length) tuples and produce an index in Fr32 padded format