调整oppo支付，不引用外部包

package/pay/oppo/sign.go

@@ -0,0 +1,80 @@
+package oppo
+
+import (
+	"crypto"
+	"crypto/hmac"
+	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"errors"
+	"fmt"
+	"github.com/ayflying/utility_go/package/pay/common"
+	"github.com/gogf/gf/v2/util/gconv"
+	"hash"
+	"math/rand"
+	"net/url"
+	"time"
+)
+
+func (p *OppoType) GenLoginBaseStr(bm map[string]interface{}, appKey, appSecret string) (string, string) {
+	baseStr := fmt.Sprintf("oauthConsumerKey=%s&oauthToken=%s&oauthSignatureMethod=HMAC-SHA1&oauthTimestamp=%d&oauthNonce=%d&oauthVersion=1.0&",
+		appKey, url.QueryEscape(gconv.String(bm["token"])), time.Now().Unix(), rand.Int31n(100000000))
+
+	var h hash.Hash
+	h = hmac.New(sha1.New, []byte(appSecret+"&"))
+	h.Write([]byte(baseStr))
+
+	sign := url.QueryEscape(base64.StdEncoding.EncodeToString(h.Sum(nil)))
+	return baseStr, sign
+}
+
+func (p *OppoType) VerifySign(oppoPayPublicKey string, bm map[string]interface{}) (err error) {
+	if oppoPayPublicKey == "" || bm == nil {
+		return errors.New("oppoPayPublicKey or bm is nil")
+	}
+
+	bodySign := bm["sign"].(string)
+	bodySignType := RSA
+	signData := fmt.Sprintf("notifyId=%s&partnerOrder=%s&productName=%s&productDesc=%s&price=%s&count=%s&attach=%s",
+		bm["notifyId"], bm["partnerOrder"], bm["productName"],
+		bm["productDesc"], bm["price"], bm["count"], bm["attach"])
+	pKey := common.FormatPublicKey(oppoPayPublicKey)
+	if err = p.verifySign(signData, bodySign, bodySignType, pKey); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (p *OppoType) verifySign(signData, sign, signType, oppoPayPublicKey string) (err error) {
+	var (
+		h         hash.Hash
+		hashs     crypto.Hash
+		block     *pem.Block
+		pubKey    interface{}
+		publicKey *rsa.PublicKey
+		ok        bool
+	)
+	signBytes, _ := base64.StdEncoding.DecodeString(sign)
+	if block, _ = pem.Decode([]byte(oppoPayPublicKey)); block == nil {
+		return errors.New("OPPO公钥Decode错误")
+	}
+	if pubKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
+		return fmt.Errorf("x509.ParsePKIXPublicKey：%w", err)
+	}
+	if publicKey, ok = pubKey.(*rsa.PublicKey); !ok {
+		return errors.New("OPPO公钥转换错误")
+	}
+	switch signType {
+	case RSA:
+		hashs = crypto.SHA1
+	case RSA2:
+		hashs = crypto.SHA256
+	default:
+		hashs = crypto.SHA256
+	}
+	h = hashs.New()
+	h.Write([]byte(signData))
+	return rsa.VerifyPKCS1v15(publicKey, hashs, h.Sum(nil), signBytes)
+}