GRPC - Create CA certs

 

#!/bin/bash

# Create the server CA certs.
openssl req -x509                                     \
  -newkey rsa:4096                                    \
  -nodes                                              \
  -days 3650                                          \
  -keyout ca_key.pem                                  \
  -out ca_cert.pem                                    \
  -subj /C=US/ST=CA/L=SVL/O=gRPC/CN=test-server_ca/   \
  -config ./openssl.cnf                               \
  -extensions test_ca                                 \
  -sha256

# Create the client CA certs.
openssl req -x509                                     \
  -newkey rsa:4096                                    \
  -nodes                                              \
  -days 3650                                          \
  -keyout client_ca_key.pem                           \
  -out client_ca_cert.pem                             \
  -subj /C=US/ST=CA/L=SVL/O=gRPC/CN=test-client_ca/   \
  -config ./openssl.cnf                               \
  -extensions test_ca                                 \
  -sha256

# Generate a server cert.
openssl genrsa -out server_key.pem 4096
openssl req -new                                    \
  -key server_key.pem                               \
  -days 3650                                        \
  -out server_csr.pem                               \
  -subj /C=US/ST=CA/L=SVL/O=gRPC/CN=test-server1/   \
  -config ./openssl.cnf                             \
  -reqexts test_server
openssl x509 -req           \
  -in server_csr.pem        \
  -CAkey ca_key.pem         \
  -CA ca_cert.pem           \
  -days 3650                \
  -set_serial 1000          \
  -out server_cert.pem      \
  -extfile ./openssl.cnf    \
  -extensions test_server   \
  -sha256
openssl verify -verbose -CAfile ca_cert.pem  server_cert.pem

# Generate a client cert.
openssl genrsa -out client_key.pem 4096
openssl req -new                                    \
  -key client_key.pem                               \
  -days 3650                                        \
  -out client_csr.pem                               \
  -subj /C=US/ST=CA/L=SVL/O=gRPC/CN=test-client1/   \
  -config ./openssl.cnf                             \
  -reqexts test_client
openssl x509 -req           \
  -in client_csr.pem        \
  -CAkey client_ca_key.pem  \
  -CA client_ca_cert.pem    \
  -days 3650                \
  -set_serial 1000          \
  -out client_cert.pem      \
  -extfile ./openssl.cnf    \
  -extensions test_client   \
  -sha256
openssl verify -verbose -CAfile client_ca_cert.pem  client_cert.pem

rm *_csr.pem

 

Copied from: https://github.com/grpc/grpc-go/blob/master/examples/data/x509/create.sh