type cthWrapper struct {
	h constantTimeHash
}

func (c *cthWrapper) Size() int                   { return c.h.Size() }
func (c *cthWrapper) BlockSize() int              { return c.h.BlockSize() }
func (c *cthWrapper) Reset()                      { c.h.Reset() }
func (c *cthWrapper) Write(p []byte) (int, error) { return c.h.Write(p) }

				Index:      []uint8(nil),
				Checksums:  map[string]string(nil),
			},
		},
		Erasure: ErasureInfo{
			Algorithm:    "ReedSolomon",
			DataBlocks:   6,
			ParityBlocks: 6,
			BlockSize:    1048576,
			Index:        1,
			Distribution: []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
			Checksums:    []ChecksumInfo{{PartNumber: 1, Algorithm: 0x3, Hash: []uint8{}}},
		},
		NumVersions: 1,

	}, {
		input: makeInput(FormatGNU, "",
			makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}, {8, 1}, {10, 1}})...)[:blockSize],
		wantErr: io.ErrUnexpectedEOF,
	}, {
		input: makeInput(FormatGNU, "",
			makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}, {8, 1}, {10, 1}})...)[:3*blockSize/2],
		wantErr: io.ErrUnexpectedEOF,
	}, {
		input: makeInput(FormatGNU, "",

		Size:             0,
		Mode:             0,
		Metadata:         nil,
		Parts:            nil,
		Erasure: ErasureInfo{
			Algorithm:    ReedSolomon.String(),
			DataBlocks:   4,
			ParityBlocks: 2,
			BlockSize:    10000,
			Index:        1,
			Distribution: []int{1, 2, 3, 4, 5, 6, 7, 8},
			Checksums: []ChecksumInfo{{
				PartNumber: 1,
				Algorithm:  HighwayHash256S,
				Hash:       nil,
			}},
		},

	if len(p) == 0 {
		return ""
	}
	i := h & (len(p) - 1)
	return p[i] // ERROR "Proved IsInBounds$"
}

func and(p []byte) ([]byte, []byte) { // issue #52563
	const blocksize = 16
	fullBlocks := len(p) &^ (blocksize - 1)
	blk := p[:fullBlocks] // ERROR "Proved IsSliceInBounds$"
	rem := p[fullBlocks:] // ERROR "Proved IsSliceInBounds$"
	return blk, rem
}

func rshu(x, y uint) int {

	queryVals := make(url.Values)
	if opts.Serial {
		queryVals.Set("serial", "true")
	}
	queryVals.Set("blocksize", strconv.FormatUint(opts.BlockSize, 10))
	queryVals.Set("filesize", strconv.FormatUint(opts.FileSize, 10))

	respBody, err := client.callWithContext(ctx, peerRESTMethodDriveSpeedTest, queryVals, nil, -1)
	if err != nil {

		globalNotificationSys.ServiceFreeze(ctx, false)
	}()

	serial := r.Form.Get("serial") == "true"
	blockSizeStr := r.Form.Get("blocksize")
	fileSizeStr := r.Form.Get("filesize")

	blockSize, err := strconv.ParseUint(blockSizeStr, 10, 64)
	if err != nil {
		blockSize = 4 * humanize.MiByte // default value
	}

	fileSize, err := strconv.ParseUint(fileSizeStr, 10, 64)
	if err != nil {

func newFileInfo(object string, dataBlocks, parityBlocks int) (fi FileInfo) {
	fi.Erasure = ErasureInfo{
		Algorithm:    erasureAlgorithm,
		DataBlocks:   dataBlocks,
		ParityBlocks: parityBlocks,
		BlockSize:    blockSizeV2,
		Distribution: hashOrder(object, dataBlocks+parityBlocks),
	}
	return fi
}

// ReadMultipleReq contains information of multiple files to read from disk.
type ReadMultipleReq struct {

	// sort the pages array
	sort.Sort(rt.pages)

	for _, p := range rt.pages {
		b := rt.blocks[p]
		const sizeOfPEbaseRelocBlock = 8 // 2 * sizeof(uint32)
		blockSize := uint32(sizeOfPEbaseRelocBlock + len(b.entries)*2)
		out.Write32(p)
		out.Write32(blockSize)

		for _, e := range b.entries {
			out.Write16(e.typeOff)
		}
	}
}

	MOVD	iv+32(FP), IVP
	MOVD	enc+40(FP), ENC
	MOVD	nr+48(FP), ROUNDS

#ifdef NEEDS_ESPERM
	MOVD	$·rcon(SB), R11
	LVX	(R11), ESPERM   // Permute value for P8_ macros.
#endif

	// Assume len > 0 && len % blockSize == 0.
	CMPW	ENC, $0
	P8_LXVB16X(IVP, R0, IVEC)
	CMPU	ROUNDS, $10, CR1
	CMPU	ROUNDS, $12, CR2 // Only sizes 10/12/14 are supported.

	// Setup key in VSRs, and set loop count in CTR.
	LOAD_KEY(KEYP)