35 lines
815 B
Go
35 lines
815 B
Go
package cuckoo_test
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import (
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"crypto/hmac"
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"crypto/sha256"
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"encoding/binary"
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"fmt"
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"io"
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"git.maximhutz.com/tools/go-cuckoo"
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)
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func NewStringHash(seed uint64) cuckoo.Hash[string] {
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key := binary.LittleEndian.AppendUint64(nil, seed)
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hash := hmac.New(sha256.New, key)
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return func(key string) uint64 {
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hash.Reset()
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// This will never return an error, as part of the [hash.Hash] contract. We
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// can safely ignore it.
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(io.WriteString(hash, key))
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return binary.LittleEndian.Uint64(hash.Sum(nil))
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}
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}
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func ExampleHash_stringHash() {
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hash := NewStringHash(1)
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fmt.Printf("Digest 'Hello, world!': %x\n", hash("Hello, world!"))
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fmt.Printf("Digest 'Hello, world?': %x\n", hash("Hello, world?"))
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// Output:
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// Digest 'Hello, world!': dc6602d6edcdf549
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// Digest 'Hello, world?': 432c2ddc1ae9f14b
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}
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