1、.cer文件生成.pcm文件 命令如下:
openssl x509 -in aps_development.cer -informder -out PushChatCert.pem
openssl x509 -in developer_identity.cer -inform DER -out developer_identity.pem -outform PEM
2、把push.p12文件生成为.pem文件
openssl pkcs12 -nocerts -out PushChatKey.pem -in push.p12
3.把PushChatCert.pem和PushChatKey.pem合并为一个pem文件
push leikezhu$ cat PushChatCert.pem PushChatKey.pem >huiduo.pem