我正在使用PuTTYgen生成RSA密钥并将其导出为OpenSSH格式。然后他们看起来像这样
-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,14EB795C6D5C665D
LIEmjggNbGCPMSR4XaoL3VEEbeG++Lwn/r/GjT0eGJbAaGBqH4jzpZ8ly6ZQ+2Pf
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K2KjuSHfQ5MBj9ohjEEykcyz+JYZ1E1QSR44JD025k5haC6oOYv/nnBnxAtSB6Vj
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SzvG+oJa72TMCdIekAhp1oLKDFM+jkb7CAZu+ocSpwjST4XJ0rhefA==
-----END RSA PRIVATE KEY-----
这是一个任意的SSH2-RSA密钥，密码为“test123”（无引号）。
当存储为文件时，如何在Java中读取此信息以将其用作
RSAPublicKey
和
RSAPrivateKey
请尽量详细说明，我知道密码学的基础知识，但我远非专家......