Mobile SDK build and README changes.

Makefile

@@ -34,6 +34,13 @@ gosdk-test:
 
 install-gosdk: | gosdk-build gosdk-test
 
+$(GOPATH)/bin/modvendor:
+	@go get -u github.com/goware/modvendor
+
+vendor: $(GOPATH)/bin/modvendor
+	@GO111MODULE=on go mod vendor -v
+	@modvendor -copy="**/*.c **/*.h **/*.a" -v
+
 getrev:
 	$(eval VERSION_STR=$(shell git describe --tags --dirty --always))
 	@echo "" > $(VERSION_FILE)

README.md

@@ -35,8 +35,30 @@ It is possible to support the sdk for other variations of Linux as well.
         ./sdkver
 - If it prints the gosdk version installed then setup is complete.
 
+
+### Mobile Builds (iOS and Android) ###
+- gosdk can be build to use on Mobile platforms iOS and Android using gomobile.
+- Xcode Command Line Tools is required to build SDK for iOS.
+- Android studio with NDK is required to build SDK for Android
+- Run below command for the first time to setup gomobile environment
+
+        make setup-gomobile
+
+- Use below commands in the root folder of the repo to build Mobile SDK
+
+        For iOS and Android:
+                make build-mobilesdk IOS=1 ANDROID=1
+        For iOS only:
+                make build-mobilesdk IOS=1
+        For Android only:
+                make build-mobilesdk ANDROID=1
+
 ### FAQ ###
 
 - [How to install GO on any platform](https://golang.org/doc/install)
 - [How to install different version of GO](https://golang.org/doc/install#extra_versions)
 - [How to use go mod](https://blog.golang.org/using-go-modules)
+- [What is gomobile](https://godoc.org/golang.org/x/mobile/cmd/gomobile)
+- [About XCode](https://developer.apple.com/xcode/)
+- [Android Studio](https://developer.android.com/studio)
+- [Android NDK](https://developer.android.com/ndk/)

_util/build_mobile.mk

@@ -8,54 +8,13 @@ ANDROIDBINNAME	:= zcncore.aar
 
 .PHONY: build-mobilesdk
 
-BLS_LIB_BASE_PATH=$(GOPATH)/src/github.com/herumi
-export CGO_CFLAGS+=-I$(BLS_LIB_BASE_PATH)/bls/include -I$(BLS_LIB_BASE_PATH)/mcl/include
-
-$(BLS_LIB_BASE_PATH):
-	@git clone http://github.com/herumi/mcl.git $(BLS_LIB_BASE_PATH)/mcl
-	@cd $(BLS_LIB_BASE_PATH)/mcl && git checkout cc9762f14f7f6d4bbc29c0ca418781af4a74f92d && cd - >/dev/null
-	@git clone http://github.com/herumi/bls.git $(BLS_LIB_BASE_PATH)/bls
-	@cd $(BLS_LIB_BASE_PATH)/bls && git checkout 058c89ea4262b6131e704f12583b2a852462d4f9 && cd - >>/dev/null
-	$(eval NCPU=$(shell sysctl -n hw.ncpu))
-	@$(PRINT_MAG)
-	@echo "============================================================"
-	@echo "    Building BLS for MAC...                       "
-	@echo "------------------------------------------------------------"
-	@$(PRINT_NON)
-	@sudo $(MAKE) -C $(BLS_LIB_BASE_PATH)/bls -j$(NCPU) install
-	@$(PRINT_MAG)
-	@echo "============================================================"
-	@echo "    Building MCL for MAC...                       "
-	@echo "------------------------------------------------------------"
-	@$(PRINT_NON)
-	@sudo $(MAKE) -C $(BLS_LIB_BASE_PATH)/mcl -j$(NCPU) lib/libmclbn256.dylib install
-
 $(IOSMOBILESDKDIR):
 	$(shell mkdir -p $(IOSMOBILESDKDIR)/lib)
 
 $(ANDROIDMOBILESDKDIR):
 	$(shell mkdir -p $(ANDROIDMOBILESDKDIR)/lib)
 
-setup-gomobile: $(BLS_LIB_BASE_PATH) $(IOSMOBILESDKDIR) $(ANDROIDMOBILESDKDIR)
-	@cd $(BLS_LIB_BASE_PATH)/bls && git checkout . && git checkout 058c89ea && git apply $(ROOT_DIR)/patches/github.com-herumi-bls-gomobile_ios.patch && cd -
-	@$(PRINT_CYN)
-	@echo "============================================================"
-	@echo "    Building BLS for iOS                    "
-	@echo "------------------------------------------------------------"
-	@$(PRINT_NON)
-	@$(MAKE) -C $(BLS_LIB_BASE_PATH)/bls gomobile_ios CURVE_BIT=256
-	@$(MAKE) -C $(BLS_LIB_BASE_PATH)/bls gomobile_ios CURVE_BIT=384
-	@cp -Rf $(BLS_LIB_BASE_PATH)/bls/ios/* $(IOSMOBILESDKDIR)/lib
-ifeq ($(NOANDROID),)
-	@$(PRINT_CYN)
-	@echo "============================================================"
-	@echo "    Building BLS for Android                    "
-	@echo "------------------------------------------------------------"
-	@$(PRINT_NON)
-	@$(MAKE) -C $(BLS_LIB_BASE_PATH)/bls gomobile_android CURVE_BIT=256
-	@$(MAKE) -C $(BLS_LIB_BASE_PATH)/bls gomobile_android CURVE_BIT=384
-	@cp -Rf $(BLS_LIB_BASE_PATH)/bls/android/* $(ANDROIDMOBILESDKDIR)/lib
-endif
+setup-gomobile: $(IOSMOBILESDKDIR) $(ANDROIDMOBILESDKDIR)
 	@$(PRINT_MAG)
 	@echo "============================================================"
 	@echo "    Initializing gomobile. Please wait it may take a while ..."
@@ -76,19 +35,27 @@ ifneq ($(GOPATH), )
 	$(shell ln -sf $(ROOT_DIR) $(GOPATH)/src/$(0CHAIN_PATH))
 endif
 
-build-mobilesdk: $(GOPATH)/src/$(GOSDK_PATH) getrev
+build-mobilesdk: $(GOPATH)/src/$(GOSDK_PATH)
+ifeq ($(filter-out undefined,$(foreach v, IOS ANDROID,$(origin $(v)))),)
+	@$(PRINT_RED)
+	@echo ""
+	@echo "Usage:"
+	@echo '   For iOS and Android: make build-mobilesdk IOS=1 ANDROID=1'
+	@echo '   For iOS only: make build-mobilesdk IOS=1'
+	@echo '   For Android only: make build-mobilesdk ANDROID=1'
+endif
 	@$(PRINT_CYN)
+ifneq ($(IOS),)
 	@echo "Building iOS framework. Please wait..."
-	@cd $(BLS_LIB_BASE_PATH)/bls && git checkout . && git apply $(ROOT_DIR)/patches/github.com-herumi-bls-gomobile_ios.patch && cd - >> /dev/null
 	@gomobile bind -ldflags="-s -w" -target=ios -o $(IOSMOBILESDKDIR)/$(IOSBINNAME) $(GOSDK_PATH)/zcncore
 	@echo "   $(IOSMOBILESDKDIR)/$(IOSBINNAME). - [OK]"
-ifeq ($(NOANDROID),)
+endif
+ifneq ($(ANDROID),)
 	@echo "Building Android framework. Please wait..."
-	@cd $(BLS_LIB_BASE_PATH)/bls && git checkout . && git apply $(ROOT_DIR)/patches/github.com-herumi-bls-gomobile_android.patch && cd - >> /dev/null
 	@gomobile bind -target=android/arm64,android/amd64 -ldflags=-extldflags=-Wl,-soname,libgojni.so -o $(ANDROIDMOBILESDKDIR)/$(ANDROIDBINNAME) $(GOSDK_PATH)/zcncore
 	@echo "   $(ANDROIDMOBILESDKDIR)/$(ANDROIDBINNAME). - [OK]"
 endif
-	@cd $(BLS_LIB_BASE_PATH)/bls && git checkout . && cd - >> /dev/null
+	@echo ""
 	@$(PRINT_NON)
 
 clean-mobilesdk:

core/version/version.go

@@ -2,5 +2,5 @@
 //====== THIS IS AUTOGENERATED FILE. DO NOT MODIFY ========
 
 package version
-const VERSIONSTR = "v1.0.29"
+const VERSIONSTR = "v1.0.30"
 

core/zcncrypto/ed255190chain.go

@@ -2,14 +2,14 @@ package zcncrypto
 
 import (
 	"bytes"
-	"crypto/ed25519"
 	"encoding/hex"
 	"errors"
 	"fmt"
 	"time"
 
 	"github.com/0chain/gosdk/core/encryption"
 	"github.com/tyler-smith/go-bip39"
+	"golang.org/x/crypto/ed25519"
 )
 
 //ED255190chainScheme - a signature scheme based on ED25519