DaanSelen
42 lines
749 B
Go
42 lines
749 B
Go
package utility
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import (
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"crypto/sha512"
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"encoding/hex"
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"io"
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"mime/multipart"
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"os"
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)
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func HashReader(r io.Reader) (string, error) {
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h := sha512.New()
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if _, err := io.Copy(h, r); err != nil {
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return "", err
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}
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// return the sha checksum in hex
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return hex.EncodeToString(h.Sum(nil)), nil
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// alternatively return in base64
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//return base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
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}
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func HashUpload(fileHeader *multipart.FileHeader) (string, error) {
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stream, err := fileHeader.Open()
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if err != nil {
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return "", err
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}
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defer stream.Close()
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return HashReader(stream)
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}
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func HashFile(path string) (string, error) {
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file, err := os.Open(path)
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if err != nil {
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return "", err
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}
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defer file.Close()
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return HashReader(file)
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}
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