借助openssl産生中間格式：pkcs12
openssl pkcs12 -export -in abc.crt -inkey abc.key -out abc.p12
通過jdk工具轉換：
keytool -importkeystore -srckeystore abc.p12 \
-srcstoretype PKCS12 \
-destkeystore abc.jks \
-deststoretype JKS
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