/
crypto.go
81 lines (67 loc) · 1.61 KB
/
crypto.go
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package util
import (
"crypto/md5"
"crypto/sha1"
"crypto/sha256"
"fmt"
"io"
"os"
)
// FileSHA256Hex computes SHA256 for a given file.
// The result is returned in a hex form.
func FileSHA256Hex(path string) (string, error) {
file, err := os.Open(path)
if err != nil {
return "", err
}
defer file.Close()
hasher := sha256.New()
if _, err := io.Copy(hasher, file); err != nil {
return "", err
}
return fmt.Sprintf("%x", hasher.Sum(nil)), nil
}
// FileSHA1Hex computes SHA1 for a given file.
// The result is returned in a hex form.
func FileSHA1Hex(path string) (string, error) {
file, err := os.Open(path)
if err != nil {
return "", err
}
defer file.Close()
hasher := sha1.New()
if _, err := io.Copy(hasher, file); err != nil {
return "", err
}
return fmt.Sprintf("%x", hasher.Sum(nil)), nil
}
// FileMD5 computes MD5 for a given file.
// The result is returned in a binary form.
func FileMD5(path string) ([]byte, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
hasher := md5.New()
if _, err := io.Copy(hasher, file); err != nil {
return nil, err
}
return hasher.Sum(nil), nil
}
// FileMD5Hex computes MD5 for a given file.
// The result is returned in a hex form.
func FileMD5Hex(path string) (string, error) {
fileMD5, err := FileMD5(path)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", fileMD5), nil
}
// StringSHA1Hex computes SHA1 for a given string
// The result is returned in a hex form.
func StringSHA1Hex(source string) string {
hasher := sha1.New()
hasher.Write([]byte(source))
return fmt.Sprintf("%x", hasher.Sum(nil))
}