implementing client blind ID, serverIDsigner blindsign

serverIDsigner/ownrsa/rsa.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"math/big"
 	"math/rand"
+	"strconv"
 	"strings"
 	"time"
 )
@@ -27,6 +28,13 @@ type RSA struct {
 	PrivK RSAPrivateKey
 }
 
+type PackRSA struct {
+	PubK       string    `json:"pubK"`
+	PrivK      string    `json:"privK"`
+	Date       time.Time `json:"date"`
+	PubKSigned string    `json:"pubKSigned"`
+}
+
 const maxPrime = 500
 const minPrime = 100
 
@@ -113,11 +121,11 @@ func Blind(m []int, r int, pubK RSAPublicKey, privK RSAPrivateKey) []int {
 	return mBlinded
 }
 
-func BlindSign(m []int, pubK RSAPublicKey, privK RSAPrivateKey) []int {
+func BlindSign(m []int, privK RSAPrivateKey) []int {
 	var r []int
 	for i := 0; i < len(m); i++ {
 		mBigInt := big.NewInt(int64(m[i]))
-		sigma := new(big.Int).Exp(mBigInt, privK.D, pubK.N)
+		sigma := new(big.Int).Exp(mBigInt, privK.D, privK.N)
 		r = append(r, int(sigma.Int64()))
 	}
 	return r
@@ -183,11 +191,6 @@ func PubKStringToBigInt(kS RSAPublicKeyString) (RSAPublicKey, error) {
 	return k, nil
 }
 
-type PackRSA struct {
-	PubK  string `json:"pubK"`
-	PrivK string `json:"privK"`
-}
-
 func PackKey(k RSA) PackRSA {
 	var p PackRSA
 	p.PubK = k.PubK.E.String() + "," + k.PubK.N.String()
@@ -207,3 +210,19 @@ func UnpackKey(p PackRSA) RSA {
 	}
 	return k
 }
+
+func ArrayIntToString(a []int, delim string) string {
+	return strings.Trim(strings.Replace(fmt.Sprint(a), " ", delim, -1), "[]")
+}
+func StringToArrayInt(s string, delim string) []int {
+	var a []int
+	arrayString := strings.Split(s, delim)
+	for _, s := range arrayString {
+		i, err := strconv.Atoi(s)
+		if err != nil {
+			fmt.Println(err)
+		}
+		a = append(a, i)
+	}
+	return a
+}

serverIDsigner/testUser.sh

@@ -10,9 +10,9 @@ curl -X POST http://127.0.0.1:3130/login -d '{"email": "user1@e.com", "password"
 echo ""
 echo "send pubK and m to blind sign"
 echo "json to send to the serverIDsigner:"
-echo '{"pubKstring": {"e": "65537", "n": "139093"}, "m": "hola"}'
+echo '{"m": "hola"}'
 echo "serverIDsigner response:"
-BLINDSIGNED=$(curl -X POST http://127.0.0.1:3130/blindsign -d '{"pubKstring": {"e": "65537", "n": "139093"}, "m": "hola"}')
+BLINDSIGNED=$(curl -X POST http://127.0.0.1:3130/blindsign -d '{"m": "hola"}')
 echo "$BLINDSIGNED"
 
 echo ""

serverIDsigner/userRESTFunctions.go

@@ -7,6 +7,7 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/fatih/color"
 	"gopkg.in/mgo.v2/bson"
 
 	ownrsa "./ownrsa"
@@ -96,13 +97,12 @@ type Sign struct {
 }
 
 type AskBlindSign struct {
-	PubKString ownrsa.RSAPublicKeyString `json:"pubKstring"`
-	PubK       ownrsa.RSAPublicKey       `json:"pubK"`
-	M          string                    `json:"m"`
+	/*PubKString ownrsa.RSAPublicKeyString `json:"pubKstring"`
+	PubK       ownrsa.RSAPublicKey       `json:"pubK"`*/
+	M string `json:"m"`
 }
 
 func BlindSign(w http.ResponseWriter, r *http.Request) {
-	fmt.Println(r.Body)
 	decoder := json.NewDecoder(r.Body)
 	var askBlindSign AskBlindSign
 	err := decoder.Decode(&askBlindSign)
@@ -110,26 +110,36 @@ func BlindSign(w http.ResponseWriter, r *http.Request) {
 		panic(err)
 	}
 	defer r.Body.Close()
-
+	color.Red(askBlindSign.M)
 	fmt.Println(askBlindSign)
+
+	/*fmt.Println(askBlindSign)
 	askBlindSign.PubK, err = ownrsa.PubKStringToBigInt(askBlindSign.PubKString)
 	if err != nil {
 		fmt.Fprintln(w, "error")
 		return
-	}
+	}*/
 
 	//convert msg to []int
-	var m []int
+	/*var m []int
 	mBytes := []byte(askBlindSign.M)
 	for _, byte := range mBytes {
 		m = append(m, int(byte))
-	}
+	}*/
 
-	sigma := ownrsa.BlindSign(m, askBlindSign.PubK, serverRSA.PrivK) //here the privK will be the CA privK, not the m emmiter's one. The pubK is the user's one
+	m := ownrsa.StringToArrayInt(askBlindSign.M, "_")
+
+	sigma := ownrsa.BlindSign(m, serverRSA.PrivK) //here the privK will be the CA privK, not the m emmiter's one. The pubK is the user's one
 	fmt.Print("Sigma': ")
 	fmt.Println(sigma)
+	sigmaString := ownrsa.ArrayIntToString(sigma, "_")
+	askBlindSign.M = sigmaString
 
-	fmt.Fprintln(w, sigma)
+	jResp, err := json.Marshal(askBlindSign)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Fprintln(w, string(jResp))
 }
 
 type PetitionVerifySign struct {