DataBlocks int `json:"data"`
	// ParityBlocks is the number of parity blocks for erasure-coding
	ParityBlocks int `json:"parity"`
	// BlockSize is the size of one erasure-coded block
	BlockSize int64 `json:"blockSize"`
	// Index is the index of the current disk
	Index int `json:"index"`
	// Distribution is the distribution of the data and parity blocks
	Distribution []int `json:"distribution"`

	crypto.RegisterHash(crypto.SHA256, New)
}

// The size of a SHA256 checksum in bytes.
const Size = 32

// The size of a SHA224 checksum in bytes.
const Size224 = 28

// The blocksize of SHA256 and SHA224 in bytes.
const BlockSize = 64

const (
	chunk     = 64
	init0     = 0x6A09E667
	init1     = 0xBB67AE85
	init2     = 0x3C6EF372
	init3     = 0xA54FF53A
	init4     = 0x510E527F
	init5     = 0x9B05688C

	}
	w := metacacheWriter{
		mw:        nil,
		blockSize: blockSize,
	}
	w.creator = func() error {
		s2w := s2.NewWriter(out, s2.WriterBlockSize(blockSize), s2.WriterConcurrency(2))
		w.mw = msgp.NewWriter(s2w)
		w.creator = nil
		if err := w.mw.WriteByte(metacacheStreamVersion); err != nil {
			return err
		}

		w.closer = func() (err error) {
			defer func() {
				cerr := s2w.Close()

		ptrs[i] = new(obj)
	}

	writeBarrierBenchmark(b, func() {
		const blockSize = 1024
		var pos int
		for i := 0; i < b.N; i += blockSize {
			// Rotate block.
			block := ptrs[pos : pos+blockSize]
			first := block[0]
			copy(block, block[1:])
			block[blockSize-1] = first

			pos += blockSize
			if pos+blockSize > len(ptrs) {
				pos = 0
			}

			runtime.Gosched()
		}
	})

}

type CryptoReportHash struct {
	Type       [64]uint8
	Blocksize  uint32
	Digestsize uint32
}

type CryptoReportCipher struct {
	Type        [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
}

type CryptoReportBlkCipher struct {
	Type        [64]uint8
	Geniv       [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
	Ivsize      uint32

}

type CryptoReportHash struct {
	Type       [64]uint8
	Blocksize  uint32
	Digestsize uint32
}

type CryptoReportCipher struct {
	Type        [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
}

type CryptoReportBlkCipher struct {
	Type        [64]uint8
	Geniv       [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
	Ivsize      uint32

}

type CryptoReportHash struct {
	Type       [64]uint8
	Blocksize  uint32
	Digestsize uint32
}

type CryptoReportCipher struct {
	Type        [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
}

type CryptoReportBlkCipher struct {
	Type        [64]uint8
	Geniv       [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
	Ivsize      uint32

}

type CryptoReportHash struct {
	Type       [64]uint8
	Blocksize  uint32
	Digestsize uint32
}

type CryptoReportCipher struct {
	Type        [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
}

type CryptoReportBlkCipher struct {
	Type        [64]uint8
	Geniv       [64]uint8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
	Ivsize      uint32

}

type CryptoReportHash struct {
	Type       [64]int8
	Blocksize  uint32
	Digestsize uint32
}

type CryptoReportCipher struct {
	Type        [64]int8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
}

type CryptoReportBlkCipher struct {
	Type        [64]int8
	Geniv       [64]int8
	Blocksize   uint32
	Min_keysize uint32
	Max_keysize uint32
	Ivsize      uint32

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build (!arm64 && !s390x && !ppc64le) || !gc || purego

package chacha20

const bufSize = blockSize

func (s *Cipher) xorKeyStreamBlocks(dst, src []byte) {
	s.xorKeyStreamBlocksGeneric(dst, src)