support basic authv0.2.0

1 files changed, 31 insertions, 0 deletions

diff --git a/auth.go b/auth.go
new file mode 100644
index 0000000..53e8db0
--- /dev/null
+++ b/auth.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"syscall"
+
+	"golang.org/x/crypto/bcrypt"
+	"golang.org/x/term"
+)
+
+func ReadPasswordFromUserInput() (string, error) {
+	bs, err := term.ReadPassword(int(syscall.Stdin))
+	if err != nil {
+		return "", err
+	} else {
+		return string(bs), nil
+	}
+}
+
+func GeneratePasswordHash(password string) (string, error) {
+	bs, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	if err != nil {
+		return "", err
+	} else {
+		return string(bs), nil
+	}
+}
+
+func VerifyPassword(password, hash string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}