RSAUtils 注释
RSAUtils 注释 springVersion =5.3.16 version =3.3.3
This commit is contained in:
MaxKey
@@ -32,20 +32,29 @@ import java.util.Map;
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import javax.crypto.Cipher;
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/**
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* @author shiming
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*
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*/
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public final class RSAUtils {
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public static final String KEY_ALGORTHM = "RSA";
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public static final String KEY_ALGORTHM = "RSA";
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public static final String PUBLIC_KEY = "RSAPublicKey";
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public static final String PUBLIC_KEY = "RSAPublicKey";
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public static final String PRIVATE_KEY = "RSAPrivateKey";
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public static final String PRIVATE_KEY = "RSAPrivateKey";
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public static final int BASE64ARRAY_SIZE = 64;
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public static final int KEY_SIZE = 1024;
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public static final int PEM_ARRAY_SIZE = 64;
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/**
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* 生成KEY_SIZE长度的RSA密钥对,存放在keyMap中
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* @return keyMap RSA密钥对
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* @throws Exception
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*/
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public static Map<String, Object> genKeyPair() throws Exception {
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KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_ALGORTHM);
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keyPairGenerator.initialize(1024);
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KeyPair keyPair = keyPairGenerator.generateKeyPair();
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KeyPair keyPair = genRSAKeyPair();
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RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
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RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
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@@ -56,29 +65,64 @@ public final class RSAUtils {
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return keyMap;
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}
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/**
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* gen RSA KeyPair
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* @return KeyPair
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* @throws Exception
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*/
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public static KeyPair genRSAKeyPair() throws Exception {
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KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance(KEY_ALGORTHM);
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keyPairGenerator.initialize(KEY_SIZE);
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return keyPairGenerator.generateKeyPair();
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}
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/**
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* 获取公钥
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* @param keyMap
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* @return 公钥
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* @throws Exception
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*/
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public static byte[] getPublicKey(Map<String, Object> keyMap)throws Exception {
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Key key = (Key) keyMap.get(PUBLIC_KEY);
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return key.getEncoded();
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}
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/**
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* 获取私钥
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* @param keyMap
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* @return 私钥
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* @throws Exception
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*/
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public static byte[] getPrivateKey(Map<String, Object> keyMap)throws Exception {
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Key key = (Key) keyMap.get(PRIVATE_KEY);
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return key.getEncoded();
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}
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/**
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* 公钥数据转换为Hex字符串
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* @param keyMap
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* @return 公钥
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* @throws Exception
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*/
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public static String getPublicKey2Hex(Map<String, Object> keyMap)throws Exception {
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return HexUtils.bytes2HexString(getPublicKey(keyMap));
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}
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/**
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* 私钥数据转换为Hex字符串
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* @param keyMap
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* @return 私钥
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* @throws Exception
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*/
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public static String getPrivateKey2Hex(Map<String, Object> keyMap)throws Exception {
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return HexUtils.bytes2HexString(getPrivateKey(keyMap));
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}
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/**
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* <EFBFBD><EFBFBD>˽Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param data <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param hexKey <EFBFBD><EFBFBD>Կ
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* 私钥加密
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* @param data 明文数据
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* @param hexKey 私钥HEX编码
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* @return
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* @throws Exception
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*/
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@@ -87,13 +131,19 @@ public final class RSAUtils {
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return encryptByPrivateKey(data,keyBytes);
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}
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/**
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* 私钥加密
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* @param data 明文数据
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* @param hexKey 私钥
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* @return
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* @throws Exception
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*/
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public static byte[] encryptByPrivateKey(byte[] data, byte[] keyBytes)throws Exception {
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PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(keyBytes);
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KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORTHM);
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Key privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
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// <20><><EFBFBD><EFBFBD>ݼ<EFBFBD><DDBC><EFBFBD>
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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cipher.init(Cipher.ENCRYPT_MODE, privateKey);
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@@ -101,24 +151,31 @@ public final class RSAUtils {
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}
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/**
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* <EFBFBD><EFBFBD>˽Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param data <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param hexKey <EFBFBD><EFBFBD>Կ
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* @return
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* 私钥解密
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* @param data 解密数据
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* @param hexKey 私钥HEX编码
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* @return 明文数据
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* @throws Exception
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*/
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public static byte[] decryptByPrivateKey(byte[] data, String hexKey)throws Exception {
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// <EFBFBD><EFBFBD>˽Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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// 私钥HEX编码转换为byte
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byte[] keyBytes = HexUtils.hex2Bytes(hexKey);
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return decryptByPrivateKey(data,keyBytes);
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}
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/**
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* 私钥解密
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* @param data 解密数据
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* @param keyBytes 私钥
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* @return 明文数据
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* @throws Exception
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*/
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public static byte[] decryptByPrivateKey(byte[] data, byte[] keyBytes)throws Exception {
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PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(keyBytes);
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KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORTHM);
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Key privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
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// <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><EFBFBD><EFBFBD>
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// 解密
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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cipher.init(Cipher.DECRYPT_MODE, privateKey);
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@@ -126,10 +183,10 @@ public final class RSAUtils {
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}
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/**
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* <EFBFBD>ù<EFBFBD>Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param data <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param hexKey <EFBFBD><EFBFBD>Կ
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* @return
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* 公钥解密
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* @param data 明文数据
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* @param hexKey 公钥HEX
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* @return 密文
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* @throws Exception
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*/
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public static byte[] encryptByPublicKey(byte[] data, String hexKey)throws Exception {
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@@ -138,6 +195,13 @@ public final class RSAUtils {
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return encryptByPublicKey(data,keyBytes);
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}
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/**
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* 公钥解密
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* @param data 明文数据
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* @param hexKey 公钥
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* @return 密文
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* @throws Exception
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*/
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public static byte[] encryptByPublicKey(byte[] data, byte[] keyBytes)throws Exception {
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X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(keyBytes);
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@@ -152,31 +216,43 @@ public final class RSAUtils {
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}
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/**
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* <EFBFBD>ù<EFBFBD>Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param data <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param hexKey <EFBFBD><EFBFBD>Կ
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* @return
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* 公钥解密
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* @param data 密文数据
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* @param hexKey 公钥HEX
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* @return 明文
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* @throws Exception
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*/
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public static byte[] decryptByPublicKey(byte[] data, String hexKey)throws Exception {
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// <EFBFBD><EFBFBD>˽Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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// hexKey 公钥HEX转换为byte
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byte[] keyBytes = HexUtils.hex2Bytes(hexKey);
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return decryptByPublicKey(data,keyBytes);
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}
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/**
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* 公钥解密
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* @param data 密文数据
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* @param keyBytes 公钥
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* @return 明文
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* @throws Exception
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*/
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public static byte[] decryptByPublicKey(byte[] data, byte[] keyBytes)throws Exception {
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// <EFBFBD><EFBFBD>˽Կ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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// 通过keyBytes构建公钥
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X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(keyBytes);
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KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORTHM);
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Key publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
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// <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><EFBFBD><EFBFBD>
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// 解密
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Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm());
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cipher.init(Cipher.DECRYPT_MODE, publicKey);
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return cipher.doFinal(data);
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}
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/**
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* 获取公钥的PEM格式
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* @param encoded 公钥
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* @return PEM格式公钥
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*/
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public static String getPublicKeyPEM(byte[] encoded) {
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StringBuffer base64String =
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new StringBuffer("");
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@@ -186,6 +262,11 @@ public final class RSAUtils {
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return base64String.toString();
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}
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/**
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* 获取私钥的PEM格式
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* @param encoded 私钥
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* @return PEM格式私钥
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*/
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public static String getPrivateKeyPEM(byte[] encoded) {
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StringBuffer base64String =
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new StringBuffer("");
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@@ -195,15 +276,20 @@ public final class RSAUtils {
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return base64String.toString();
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}
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/**
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* 获取密钥的PEM格式
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* @param encoded 密钥
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* @return PEM格式密钥
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*/
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public static String getBase64PEM(byte[] encoded) {
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String base64String = Base64.getEncoder().encodeToString(encoded);
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StringBuffer base64ArrayString = new StringBuffer("");
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int startPosition = 0;
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int endPosition = BASE64ARRAY_SIZE;
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int endPosition = PEM_ARRAY_SIZE;
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while(endPosition < base64String.length()) {
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base64ArrayString.append(base64String.substring(startPosition, endPosition)).append("\n");
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startPosition = endPosition;
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endPosition = endPosition + BASE64ARRAY_SIZE;
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endPosition = endPosition + PEM_ARRAY_SIZE;
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}
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if(startPosition < base64String.length()) {
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base64ArrayString.append(base64String.substring(startPosition)).append("\n");
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