乐趣区

关于openssl:openssl-证书生成笔记go-115版本以上

[TOC]

openssl 证书生成

问题

golang 1.15+ 版本上,用 gRPC 通过 TLS 实现数据传输加密时,会报错证书的问题

rpc error: code = Unavailable desc = connection error: desc = "transport: authentication ha
ndshake failed: x509: certificate is valid for www.eline.com, not xxx"
panic: rpc error: code = Unavailable desc = connection error: desc = "transport: authentication handshake failed: x509: certificate is valid for www.eline.com, not xxx"

造成的起因是因为咱们用的证书,并没有开启 SAN 扩大(默认是没有开启 SAN 扩大)所生成的

导致客户端和服务端无奈建设连贯

开始解决问题

应用开启扩大 SAN 的证书

什么是 SAN

SAN(Subject Alternative Name) 是 SSL 规范 x509 中定义的一个扩大。应用了 SAN 字段的 SSL 证书,能够扩大此证书反对的域名,使得一个证书能够反对多个不同域名的解析。

生成 CA 根证书

新建 ca.conf

vim ca.conf

写入内容如下:

[req]
default_bits       = 4096
distinguished_name = req_distinguished_name

[req_distinguished_name]
countryName                 = Country Name (2 letter code)
countryName_default         = CN
stateOrProvinceName         = State or Province Name (full name)
stateOrProvinceName_default = JiangSu
localityName                = Locality Name (eg, city)
localityName_default        = NanJing
organizationName            = Organization Name (eg, company)
organizationName_default    = Sheld
commonName                  = Common Name (e.g. server FQDN or YOUR name)
commonName_max              = 64
commonName_default          = Ted CA Test

生成 ca 秘钥,失去 ca.key

openssl genrsa -out ca.key 4096

生成 ca 证书签发申请,失去 ca.csr

openssl req \
  -new \
  -sha256 \
  -out ca.csr \
  -key ca.key \
  -config ca.conf

shell 交互时一路回车就行

生成 ca 根证书,失去 ca.crt

openssl x509 \
    -req \
    -days 3650 \
    -in ca.csr \
    -signkey ca.key \
    -out ca.crt

生成终端用户证书

筹备配置文件,失去 server.conf

新建 server.conf

vim server.conf

写入内容如下:

[req]
default_bits       = 2048
distinguished_name = req_distinguished_name
req_extensions     = req_ext

[req_distinguished_name]
countryName                 = Country Name (2 letter code)
countryName_default         = CN
stateOrProvinceName         = State or Province Name (full name)
stateOrProvinceName_default = JiangSu
localityName                = Locality Name (eg, city)
localityName_default        = NanJing
organizationName            = Organization Name (eg, company)
organizationName_default    = Sheld
commonName                  = Common Name (e.g. server FQDN or YOUR name)
commonName_max              = 64
commonName_default          = xiamotong    # 此处尤为重要,须要用该服务名字填写到客户端的代码中

[req_ext]
subjectAltName = @alt_names

[alt_names]
DNS.1   = www.eline.com
IP      = 127.0.0.1

生成秘钥,失去 server.key

openssl genrsa -out server.key 2048

生成证书签发申请,失去 server.csr

openssl req \
  -new \
  -sha256 \
  -out server.csr \
  -key server.key \
  -config server.conf

shell 交互时一路回车就行

用 CA 证书生成终端用户证书,失去 server.crt

openssl x509 \
  -req \
  -days 3650 \
  -CA ca.crt \
  -CAkey ca.key \
  -CAcreateserial \
  -in server.csr \
  -out server.pem\
  -extensions req_ext \
  -extfile server.conf

当初证书曾经生成结束,server.pem 和 server.key就是咱们须要的证书和密钥

服务端代码:

creds, err := credentials.NewServerTLSFromFile("./keys/server.pem", "./keys/server.key")

客户端代码:

creds, err := credentials.NewClientTLSFromFile("./keys/server.pem", "xiaomotong")

好了,本次就到这里,下一次分享 gRPC 的 interceptor

技术是凋谢的,咱们的心态,更应是凋谢的。拥抱变动,背阴而生,致力向前行。

我是 小魔童哪吒,欢送点赞关注珍藏,下次见~

退出移动版