HDC调试需求开发（15万预算）,能者速来！>>>
已经生成用户证书 server.crt，如何从中提取出公钥文件？
$ openssl x509 -outform PEM -in server/server.crt -pubkey -out server/server.pubkey
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDYhJizzt4+zhLMTSjDk0rd6MlK
xBYKIp972+Wc9KSpOs5LGQ+2802mlr6dSDWJJhJShArqOIKgxNE7ZBZYlGeDo4l6
Dm4DyVFpu62fObgk6vmU8T7nvF8Uo7sQdpfqgUjofGFgUDjB3fYgKUTp+kOj6RMh
R3uttrZmOraF/rEUkQIDAQAB
-----END PUBLIC KEY-----


可以显示公钥信息，手动将其中内容复制到一个文件中做公钥测试成功，但是此命令输出的文件内容不是公钥信息，内容如下：

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE----- 求提取证书中密钥文件的命令，网上查了许多无果。