-- import "github.com/nickvanw/treehash"
Package treehash implements the sha256 tree hash for Amazon Glacier
func BlockSize(size int) confFuncBlockSize is used to set the block size from the default of 1MB
type MultiTreeHash struct {
}MultiTreeHash allows the cumulative sum of multiple TreeHashes to one master hash, for multipart uploads with Amazon Glacier
func (m *MultiTreeHash) Add(hsh string)Add adds another hash to the tree
func (m *MultiTreeHash) Hash() stringHash returns the current hash based on the tree
type TreeHash struct {
}TreeHash implments ReadCloser, data written to is is internally hashed into a hash tree as documented here: http://docs.aws.amazon.com/amazonglacier/latest/dev/checksum-calculations.html
func NewTreeHash(cfgs ...confFunc) *TreeHashNewTreeHash creates and initializes a new TreeHash using the default values The tree sum is only available after calling close, to ensure the last block of data is written to the tree properly
func (t *TreeHash) Close() errorClose closes the writer and computes the final tree hash After the first call, any writes will create an invalid hash tree
func (t *TreeHash) Hash() stringHash returns the sha256 sum of all of the data written to the reader This will only be valid after Close has been called
func (t *TreeHash) TreeHash() stringTreeHash returns the string of the treehash. This will only return a hash after Close has been called
func (t *TreeHash) Write(p []byte) (n int, err error)Write hashes the data in p and adds it to the internal sha256 tree