通过命令行手动生成RSA密钥对

安装openSSL

• apt-get install openssl
• apt-get install libssl-dev
• openssl version -a

生成公私钥

• 生成私钥 (PKCS＃1)

  openssl genrsa -out rsa_private.pem 2048
  

• 由私钥 (PKCS＃1)生成公钥 (PKCS＃1)

  openssl rsa -in rsa_private.pem -RSAPublicKey_out -out rsa_public2.pem
  

• 由私钥 (PKCS＃1)生成公钥 (PKCS＃8)

  openssl rsa -in rsa_private.pem -pubout -out rsa_public.pem
  

• 要从 (PKCS＃1)转换为 (PKCS＃8)

  openssl rsa -RSAPublicKey_in -in rsa_public2.pem -pubout
  

• 要从 (PKCS＃8)转换为 (PKCS＃1)

  openssl rsa -pubin -in <filename> -RSAPublicKey_out