增加vivo支付与登录接口

package/pay/vivo/sign.go

@@ -0,0 +1,47 @@
+package vivo
+
+import (
+	"errors"
+	"github.com/gogf/gf/v2/crypto/gmd5"
+	"github.com/gogf/gf/v2/frame/g"
+	"github.com/gogf/gf/v2/util/gconv"
+
+	"sort"
+	"strings"
+)
+
+func (p *Pay) VerifySign(bm g.Map, key string) bool {
+	signature := bm["signature"]
+	delete(bm, "signature")
+	delete(bm, "signMethod")
+	return signature == p.sign(bm, key)
+}
+
+func (p *Pay) sign(bm g.Map, key string) string {
+	s, _ := p.buildSignStr(bm)
+	s += "&" + gmd5.MustEncrypt(key)
+	return gmd5.MustEncrypt(s)
+}
+
+func (p *Pay) buildSignStr(bm g.Map) (string, error) {
+	var (
+		buf     strings.Builder
+		keyList []string
+	)
+	for k := range bm {
+		keyList = append(keyList, k)
+	}
+	sort.Strings(keyList)
+	for _, k := range keyList {
+		if v := bm[k]; v != "" {
+			buf.WriteString(k)
+			buf.WriteByte('=')
+			buf.WriteString(gconv.String(v))
+			buf.WriteByte('&')
+		}
+	}
+	if buf.Len() <= 0 {
+		return "", errors.New("length is error")
+	}
+	return buf.String()[:buf.Len()-1], nil
+}