first commit

pkg/hmac/hmac.go

@@ -0,0 +1,55 @@
+package hmac
+
+import (
+	baseHmac "crypto/hmac"
+	"crypto/sha1"
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/hex"
+)
+
+var _ HMAC = (*hmac)(nil)
+
+type HMAC interface {
+	i()
+
+	Sha1ToString(data string) string
+	Sha1ToBase64String(data string) string
+
+	Sha256ToString(data string) string
+	Sha256ToBase64String(data string) string
+}
+
+type hmac struct {
+	secret string
+}
+
+func New(secret string) HMAC {
+	return &hmac{secret: secret}
+}
+
+func (m *hmac) i() {}
+
+func (m *hmac) Sha256ToString(data string) string {
+	h := baseHmac.New(sha256.New, []byte(m.secret))
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func (m *hmac) Sha256ToBase64String(data string) string {
+	h := baseHmac.New(sha256.New, []byte(m.secret))
+	h.Write([]byte(data))
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}
+
+func (m *hmac) Sha1ToString(data string) string {
+	h := baseHmac.New(sha1.New, []byte(m.secret))
+	h.Write([]byte(data))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+func (m *hmac) Sha1ToBase64String(data string) string {
+	h := baseHmac.New(sha1.New, []byte(m.secret))
+	h.Write([]byte(data))
+	return base64.StdEncoding.EncodeToString(h.Sum(nil))
+}