Java生成3DES對稱秘鑰和RSA非對稱秘鑰

jopen 9年前發布 | 23K 次閱讀 秘鑰 Java開發 

/1、對稱加密3DES秘鑰生成/
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、非對稱加密RSA公鑰和私鑰生成/
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()));</pre>


執行結果（RSA有換行）： 


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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