Example #1
0
func (b *DirectoryBlock) BuildKeyMerkleRoot() (keyMR interfaces.IHash, err error) {
	// Create the Entry Block Key Merkle Root from the hash of Header and the Body Merkle Root
	hashes := make([]interfaces.IHash, 0, 2)
	binaryEBHeader, _ := b.GetHeader().MarshalBinary()
	hashes = append(hashes, primitives.Sha(binaryEBHeader))
	hashes = append(hashes, b.GetHeader().GetBodyMR())
	merkle := primitives.BuildMerkleTreeStore(hashes)
	keyMR = merkle[len(merkle)-1] // MerkleRoot is not marshalized in Dir Block

	b.KeyMR = keyMR

	return keyMR, nil
}
Example #2
0
func (b *DirectoryBlock) BuildBodyMR() (mr interfaces.IHash, err error) {
	hashes := make([]interfaces.IHash, len(b.GetDBEntries()))
	for i, entry := range b.GetDBEntries() {
		data, _ := entry.MarshalBinary()
		hashes[i] = primitives.Sha(data)
	}

	if len(hashes) == 0 {
		hashes = append(hashes, primitives.Sha(nil))
	}

	merkle := primitives.BuildMerkleTreeStore(hashes)
	return merkle[len(merkle)-1], nil
}
Example #3
0
func (b *DirectoryBlock) BuildKeyMerkleRoot() (keyMR interfaces.IHash, err error) {
	// Create the Entry Block Key Merkle Root from the hash of Header and the Body Merkle Root

	hashes := make([]interfaces.IHash, 0, 2)
	bodyKeyMR := b.BodyKeyMR() //This needs to be called first to build the header properly!!
	headerHash, err := b.HeaderHash()
	if err != nil {
		return nil, err
	}
	hashes = append(hashes, headerHash)
	hashes = append(hashes, bodyKeyMR)
	merkle := primitives.BuildMerkleTreeStore(hashes)
	keyMR = merkle[len(merkle)-1] // MerkleRoot is not marshalized in Dir Block

	b.KeyMR = keyMR

	b.GetFullHash() // Create the Full Hash when we create the keyMR

	return primitives.NewHash(keyMR.Bytes()), nil
}
Example #4
0
func (b *DirectoryBlock) BuildBodyMR() (interfaces.IHash, error) {
	hashes := make([]interfaces.IHash, len(b.GetDBEntries()))
	for i, entry := range b.GetDBEntries() {
		data, err := entry.MarshalBinary()
		if err != nil {
			return nil, err
		}
		hashes[i] = primitives.Sha(data)
	}

	if len(hashes) == 0 {
		hashes = append(hashes, primitives.Sha(nil))
	}

	merkleTree := primitives.BuildMerkleTreeStore(hashes)
	merkleRoot := merkleTree[len(merkleTree)-1]

	b.GetHeader().SetBodyMR(merkleRoot)

	return merkleRoot, nil
}
Example #5
0
// MR calculates the Merkle Root of the Entry Block Body. See func
// primitives.BuildMerkleTreeStore(hashes []interfaces.IHash) (merkles []interfaces.IHash) in common/merkle.go.
func (e *EBlockBody) MR() interfaces.IHash {
	mrs := primitives.BuildMerkleTreeStore(e.EBEntries)
	r := mrs[len(mrs)-1]
	return r
}