43 lines
725 B
Go
43 lines
725 B
Go
package data
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import (
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"crypto/sha256"
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"io"
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)
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/*
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[I2P Hash]
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Accurate for version 0.9.49
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Description
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Represents the SHA256 of some data.
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Contents
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32 bytes
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[I2P Hash]:
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*/
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// Hash is the represenation of an I2P Hash.
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//
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// https://geti2p.net/spec/common-structures#hash
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type Hash [32]byte
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// HashData returns the SHA256 sum of a []byte input as Hash.
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func HashData(data []byte) (h Hash) {
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h = sha256.Sum256(data)
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return
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}
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// HashReader returns the SHA256 sum from all data read from an io.Reader.
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// return error if one occurs while reading from reader
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func HashReader(r io.Reader) (h Hash, err error) {
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sha := sha256.New()
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_, err = io.Copy(sha, r)
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if err == nil {
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d := sha.Sum(nil)
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copy(h[:], d)
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}
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return
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}
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