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53 lines
953 B
Go
53 lines
953 B
Go
package ncrypt
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import (
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"bufio"
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"crypto/md5"
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"encoding/hex"
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"fmt"
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"git.noahlan.cn/noahlan/ntool/nbyte"
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"io"
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"os"
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)
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// Md5Bytes return the md5 value of bytes.
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func Md5Bytes(b any) []byte {
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return nbyte.Md5(b)
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}
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// Md5String return the md5 value of string.
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func Md5String(s any) string {
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return hex.EncodeToString(Md5Bytes(s))
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}
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// Md5File return the md5 value of file.
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func Md5File(filename string) (string, error) {
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if fileInfo, err := os.Stat(filename); err != nil {
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return "", err
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} else if fileInfo.IsDir() {
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return "", nil
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}
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file, err := os.Open(filename)
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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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hash := md5.New()
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chunkSize := 65536
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for buf, reader := make([]byte, chunkSize), bufio.NewReader(file); ; {
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n, err := reader.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return "", err
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}
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hash.Write(buf[:n])
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}
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checksum := fmt.Sprintf("%x", hash.Sum(nil))
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return checksum, nil
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}
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