Create RSA Keypair(.pem)

RSA Keypair 생성 메소드

 

 

/**
 *  RSA Keypair(.pem) Create Method 
 */
public static HashMap<String, String> getKeypair() {

    HashMap<String, String> keypairMap = new HashMap<>();

    try {

        // RSA KeyPairGenerator 초기화
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(2048);

        // 키 쌍 생성
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        
         // 공개키 PEM 형식으로 변환
         String publicKey = "-----BEGIN PUBLIC KEY-----\n" +
                            Base64.getEncoder().encodeToString(keyPair.getPublic().getEncoded()) + 
                            "\n-----END PUBLIC KEY-----";

         // 개인키 PEM 형식으로 변환
         String privateKey = "-----BEGIN PRIVATE KEY-----\n" +
                            Base64.getEncoder().encodeToString(keyPair.getPrivate().getEncoded()) +
                            "\n-----END PRIVATE KEY-----";

        keypairMap.put("publicKey", Base64.getEncoder().encodeToString(keyPair.getPublic().getEncoded()));
        keypairMap.put("privateKey", Base64.getEncoder().encodeToString(keyPair.getPrivate().getEncoded()));

    } catch (Exception e) {
        // TODO: handle exception
    }

    return keypairMap;
}

 

 

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