42 lines
583 B
Go
42 lines
583 B
Go
package tmhash
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import (
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"crypto/sha256"
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"hash"
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)
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var (
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Size = 20
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BlockSize = sha256.BlockSize
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)
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type sha256trunc struct {
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sha256 hash.Hash
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}
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func (h sha256trunc) Write(p []byte) (n int, err error) {
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return h.sha256.Write(p)
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}
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func (h sha256trunc) Sum(b []byte) []byte {
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shasum := h.sha256.Sum(b)
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return shasum[:Size]
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}
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func (h sha256trunc) Reset() {
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h.sha256.Reset()
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}
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func (h sha256trunc) Size() int {
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return Size
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}
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func (h sha256trunc) BlockSize() int {
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return h.sha256.BlockSize()
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}
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func New() hash.Hash {
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return sha256trunc{
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sha256: sha256.New(),
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}
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}
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