据中国海事局网站消息，大连海事局发布航行警告，2月18日16时至25日16时，渤海海峡黄海北部部分海域执行军事任务，禁止驶入。
I do have certificates in DER and PEM format, my goal is to retrieve the fields of Issuer and Subject and verify the certificate with the CA public key and simultaneously verify CA certificate with th
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