Exemple #1
0
// Multihash reads all the data in r and calculates its multihash.
func (o *Options) Multihash(r io.Reader) (mh.Multihash, error) {
	b, err := ioutil.ReadAll(r)
	if err != nil {
		return nil, err
	}

	return mh.Sum(b, o.AlgorithmCode, o.Length)
}
Exemple #2
0
// Hash is the global IPFS hash function. uses multihash SHA2_256, 256 bits
func Hash(data []byte) mh.Multihash {
	h, err := mh.Sum(data, mh.SHA2_256, -1)
	if err != nil {
		// this error can be safely ignored (panic) because multihash only fails
		// from the selection of hash function. If the fn + length are valid, it
		// won't error.
		panic("multihash failed to hash using SHA2_256.")
	}
	return h
}