49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
package hash
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import (
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"golang.org/x/crypto/blake2b"
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"io"
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"os"
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)
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// Blake2bSum ignores all errors and gives you a blakae2b 64 hash value as a byte slice. (or panics somehow)
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func Blake2bSum(b []byte) []byte {
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Hasha, _ := blake2b.New(64, nil)
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Hasha.Write(b)
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return Hasha.Sum(nil)
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}
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// BlakeFileChecksum takes in the path of a file on the OS' filesystem and will attempt to calculate a blake2b checksum of the file's contents.
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func BlakeFileChecksum(filename string) ([]byte, error) {
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f, err := os.Open(filename)
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defer f.Close()
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empty := []byte{}
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if err != nil {
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return empty, err
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}
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buf, err := io.ReadAll(f)
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if err != nil {
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return empty, err
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}
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hasha, err := blake2b.New(64, nil)
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if err != nil {
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return empty, err
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}
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hasha.Write(buf)
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return hasha.Sum(nil), nil
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}
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// BlakeEqual will take in two byte slices, hash them with blake2b, and tell you if the resulting checksums match.
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func BlakeEqual(a []byte, b []byte) bool {
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ahash := Blake2bSum(a)
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bhash := Blake2bSum(b)
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return string(ahash) == string(bhash)
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}
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