java生成3DES对称秘钥和RSA非对称秘钥

/*1、对称加密3DES秘钥生成*/
KeyGenerator kg = KeyGenerator.getInstance("DESede");
kg.init(112);//must be equal to 112 or 168
System.out.println("SecretKey:");
System.out.println(new BASE64Encoder().encode(kg.generateKey().getEncoded()));

/*2、非对称加密RSA公钥和私钥生成*/
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");  
keyGen.initialize(512);//RSA keys must be at least 512 bits long
KeyPair key = keyGen.generateKeyPair();
System.out.println("PublicKey:");
System.out.println(new BASE64Encoder().encode(key.getPublic().getEncoded()));
System.out.println("PrivateKey:");
System.out.println(new BASE64Encoder().encode(key.getPrivate().getEncoded()));

执行结果（RSA有换行）：

SecretKey:

74zQ5ko3QN/Tx2GG/c4+f++M0OZKN0Df

PublicKey:

MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAIv38xXk06As11OCWq0IPQoQAmz20ZiE8T5KeaMTUbhz

UkGNTAQygApua71R/INeEDNsyyQS4PT6EaWTjJop2rcCAwEAAQ==

PrivateKey:

MIIBVAIBADANBgkqhkiG9w0BAQEFAASCAT4wggE6AgEAAkEAi/fzFeTToCzXU4JarQg9ChACbPbR

mITxPkp5oxNRuHNSQY1MBDKACm5rvVH8g14QM2zLJBLg9PoRpZOMminatwIDAQABAkBqDAR7FBJb

C15hgSQecV194D9WO3L18dOt9FNQgPSroGVYIvIizp1/wIHpMTN6uHwSoaZQcOqV33gxLF6fKbwx

AiEAv390Q3X2cBjeScxhNbqPiOspE9rYD3eWSajN6Q7ud7UCIQC7HTUZelHMCpv4xPzg6e1QZkWh

Bfuqkhg9aOeAnIW0OwIgLW5Tat3FhXqg4ek29sQ34UfJCwjUUXcRlJATqcL9GDECIQChqe+JzrxD

bVsrCY9vB83JLEO2hwPUcJtO24dBAHsopwIgEV547YcgZ+pyI1dnQhiLJiiFif+h1aBzaIH5mrks

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