/
scrypt.go
48 lines (40 loc) · 1.07 KB
/
scrypt.go
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package passwd
import (
"crypto/rand"
"crypto/subtle"
"encoding/base64"
"net/http"
"strings"
"golang.org/x/crypto/scrypt"
)
type _scrypt struct{}
// Hash 哈希加密
func (i *_scrypt) Hash(passwd string) (string, error) {
salt := make([]byte, 16)
_, err := rand.Read(salt)
if err != nil {
return "", err
}
hash, err := scrypt.Key([]byte(passwd), salt, 32768, 8, 1, 32)
if err != nil {
return "", err
}
encodedHash := base64.StdEncoding.EncodeToString(hash)
encodedSalt := base64.StdEncoding.EncodeToString(salt)
return strings.Join([]string{encodedHash, encodedSalt}, "."), err
}
// Check 校验密码
func (i *_scrypt) Check(passwd string, hash string) error {
hashes := strings.Split(hash, ".")
pwdHash, _ := base64.StdEncoding.DecodeString(hashes[0])
slat, _ := base64.StdEncoding.DecodeString(hashes[1])
inputHash, err := scrypt.Key([]byte(passwd), slat, 32768, 8, 1, 32)
if err != nil {
return err
}
if subtle.ConstantTimeCompare(pwdHash, inputHash) == 1 {
return nil
} else {
return exception.New(http.StatusUnauthorized, "密码错误.")
}
}