mirror of
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136 lines
2.5 KiB
Go
136 lines
2.5 KiB
Go
package hashenc
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import (
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"crypto/md5"
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"crypto/sha1"
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"crypto/sha256"
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"crypto/sha512"
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"hash"
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"sync"
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)
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// Hash defines a pooled hash.Hash implementation
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type Hash interface {
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// Hash ensures we implement the base hash.Hash implementation
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hash.Hash
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// Release resets the Hash and places it back in the pool
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Release()
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}
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// poolHash is our Hash implementation, providing a hash.Hash and a pool to return to
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type poolHash struct {
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hash.Hash
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pool *sync.Pool
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}
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func (h *poolHash) Release() {
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h.Reset()
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h.pool.Put(h)
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}
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// SHA512Pool defines a pool of SHA512 hashes
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type SHA512Pool interface {
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// SHA512 returns a Hash implementing the SHA512 hashing algorithm
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SHA512() Hash
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}
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// NewSHA512Pool returns a new SHA512Pool implementation
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func NewSHA512Pool() SHA512Pool {
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p := &sha512Pool{}
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p.New = func() interface{} {
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return &poolHash{
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Hash: sha512.New(),
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pool: &p.Pool,
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}
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}
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return p
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}
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// sha512Pool is our SHA512Pool implementation, simply wrapping sync.Pool
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type sha512Pool struct {
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sync.Pool
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}
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func (p *sha512Pool) SHA512() Hash {
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return p.Get().(Hash)
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}
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// SHA256Pool defines a pool of SHA256 hashes
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type SHA256Pool interface {
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// SHA256 returns a Hash implementing the SHA256 hashing algorithm
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SHA256() Hash
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}
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// NewSHA256Pool returns a new SHA256Pool implementation
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func NewSHA256Pool() SHA256Pool {
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p := &sha256Pool{}
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p.New = func() interface{} {
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return &poolHash{
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Hash: sha256.New(),
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pool: &p.Pool,
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}
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}
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return p
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}
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// sha256Pool is our SHA256Pool implementation, simply wrapping sync.Pool
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type sha256Pool struct {
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sync.Pool
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}
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func (p *sha256Pool) SHA256() Hash {
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return p.Get().(Hash)
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}
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// SHA1Pool defines a pool of SHA1 hashes
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type SHA1Pool interface {
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SHA1() Hash
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}
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// NewSHA1Pool returns a new SHA1Pool implementation
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func NewSHA1Pool() SHA1Pool {
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p := &sha1Pool{}
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p.New = func() interface{} {
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return &poolHash{
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Hash: sha1.New(),
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pool: &p.Pool,
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}
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}
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return p
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}
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// sha1Pool is our SHA1Pool implementation, simply wrapping sync.Pool
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type sha1Pool struct {
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sync.Pool
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}
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func (p *sha1Pool) SHA1() Hash {
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return p.Get().(Hash)
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}
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// MD5Pool defines a pool of MD5 hashes
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type MD5Pool interface {
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MD5() Hash
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}
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// NewMD5Pool returns a new MD5 implementation
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func NewMD5Pool() MD5Pool {
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p := &md5Pool{}
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p.New = func() interface{} {
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return &poolHash{
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Hash: md5.New(),
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pool: &p.Pool,
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}
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}
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return p
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}
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// md5Pool is our MD5Pool implementation, simply wrapping sync.Pool
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type md5Pool struct {
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sync.Pool
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}
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func (p *md5Pool) MD5() Hash {
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return p.Get().(Hash)
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}
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