hwelltech block chain cpp sdk
Dependencies: EthernetInterface SDFileSystem mbed-rtos mbed uniqueCPUID
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bcsdk 是 block chain sdk 的简写。它是由江苏恒为信息科技有限公司开发的 BlockChain 的 基于 mbed os 的 C++ 版本SDK,它能帮助开发者快速的在支持 mbed os 的芯片上开发 BlockChain 的应用。 bcsdk 的demo文件中包含了BlockChain中的 Key、Account、Asset、Transaction等方面的示例。其中: (1) Key 加密私钥是区块链上的主要授权机制。他们控制资产单位的发行和转让。 资产或帐户将定义发行或转移所需的单个密钥。 在 Key_test.cpp 中,我们实现了: 创建HSM密钥 键入密钥别名的名称(例如'gold','silver','bronze'),密钥别名是用于区分密钥的标签。
(2) Asset 资产是一种可以在区块链上发布的值类型。资产的所有单位均可互换,可以在各方之间直接交易,无需发行人参与。 在 Asset_test.cpp 中,我们实现了: 创建资产 键入资产别名的名称(例如'gold','silver','bronze'),资产别名是用于区分资产的标签。 选择“Key”键以使用现有的HSM密键,此密钥将用于此帐户中资产单位的发放和转移。
(3) Account 加帐户是恒为区块链核心平台中的一个对象,通过创建和跟踪控制程序来跟踪区块链上的资产的所有权。创建帐户时,您提供一个或多个“root”密钥和仲裁。 在 Account_test.cpp 中,我们实现了: 创建帐户 1 输入帐户别名的名称(例如'alice','bob'),帐户别名是用于区分帐户的标签。 2 键入名称以生成新的HSM密钥(例如'alice key','bob key'),此密钥将用于此帐户中资产单位的发放和转移。
(4) Transaction 交易包含一个或多个输入,以及一个或多个输出。恒为区块链核心平台的API允许您使用操作(包括发出,支出和返还)构建交易。 在 Transaction_test.cpp 中,我们实现了: 资产的交易 1 添加“账户支出”操作 2 为资产别名选择“Asset” 3 输入“100”作为金额 4 添加“使用帐户控制”操作 5 为帐户别名选择“Account” 6 为资产别名选择“Asset” 7 输入“100”作为金额 8 “提交”
main.cpp
- Committer:
- gsteiert
- Date:
- 2013-12-06
- Revision:
- 1:64f023138627
- Parent:
- 0:28bc7ce77e20
- Child:
- 3:4f71a37a1ed2
File content as of revision 1:64f023138627:
#include "mbed.h" #include "EthernetInterface.h" #include "SDFileSystem.h" #include "muri.h" #include <stdio.h> #include <string.h> #define HTTPD_SERVER_PORT 80 #define HTTPD_MAX_REQ_LENGTH 1023 #define HTTPD_MAX_HDR_LENGTH 255 #define HTTPD_MAX_FNAME_LENGTH 127 #define MURI_MAX_RESP_LENGTH 127 #define I2C_BUFFER_SIZE 31 SDFileSystem sd(p5, p6, p7, p8, "sd"); // // I2C i2c(p28, p27); EthernetInterface eth; TCPSocketServer server; TCPSocketConnection client; char buffer[HTTPD_MAX_REQ_LENGTH+1]; char httpHeader[HTTPD_MAX_HDR_LENGTH+1]; char filename[HTTPD_MAX_FNAME_LENGTH+1]; char obuf[MURI_MAX_RESP_LENGTH+1]; char data[I2C_BUFFER_SIZE]; char *uristr; char *eou; char *qrystr; FILE *fp; int rdCnt; void get_file(char* uri) { printf("get_file %s\n", uri); char *lstchr = strrchr(uri, NULL) -1; if ('/' == *lstchr) { printf("Open directory /sd%s\n", uri); *lstchr = 0; sprintf(filename, "/sd%s", uri); DIR *d = opendir(filename); if (d != NULL) { sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); client.send(httpHeader,strlen(httpHeader)); sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", uri); client.send(httpHeader,strlen(httpHeader)); struct dirent *p; while((p = readdir(d)) != NULL) { printf("%s\n", p->d_name); sprintf(httpHeader,"<li>%s</li>", p->d_name); client.send(httpHeader,strlen(httpHeader)); } } closedir(d); printf("Directory closed\n"); sprintf(httpHeader,"</ul></body></html>"); client.send(httpHeader,strlen(httpHeader)); } else { sprintf(filename, "/sd%s", uri); fp = fopen(filename, "r"); if (fp == NULL) { sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); client.send(httpHeader,strlen(httpHeader)); client.send(uri,strlen(uri)); } else { sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); client.send(httpHeader,strlen(httpHeader)); while ((rdCnt = fread(buffer, sizeof( char ), 1024, fp)) == 1024) { client.send(buffer, rdCnt); } client.send(buffer, rdCnt); fclose(fp); } } } void get_cgi(char* uri) { char *result; muri(uri, data, obuf); if (!strncmp(obuf, "200 ", 4)) { result = obuf +4; sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); client.send(httpHeader,strlen(httpHeader)); client.send(result,strlen(result)); printf("result: %s", result); } else { sprintf(httpHeader,"HTTP/1.1 "); client.send(httpHeader,strlen(httpHeader)); client.send(obuf,strlen(obuf)); sprintf(httpHeader,"\r\n"); client.send(httpHeader,strlen(httpHeader)); } } int main (void) { // EthernetInterface eth; eth.init(); //Use DHCP eth.connect(); printf("IP Address is %s\n", eth.getIPAddress()); // TCPSocketServer server; server.bind(HTTPD_SERVER_PORT); server.listen(); init_dio(); //initialize pmd digital IO while (true) { printf("\nWait for new connection...\r\n"); server.accept(client); client.set_blocking(false, 1500); // Timeout after (1.5)s printf("Connection from: %s\r\n", client.get_address()); while (true) { int n = client.receive(buffer, sizeof(buffer)); if (n <= 0) break; printf("Recieved Data: %d\r\n\r\n%.*s\r\n",n,n,buffer); if (n >= 1024) { sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); client.send(httpHeader,strlen(httpHeader)); client.send(buffer,n); break; } else { buffer[n]=0; } if (!strncmp(buffer, "GET ", 4)) { uristr = buffer + 4; eou = strstr(uristr, " "); if (eou == NULL) { sprintf(httpHeader,"HTTP/1.1 400 Bad Request \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); client.send(httpHeader,strlen(httpHeader)); client.send(buffer,n); } else { *eou = 0; if (!strncmp(uristr, "/muri/", 6)) { get_cgi(uristr+6); } else { get_file(uristr); } } } } client.close(); } }