Java Code Examples for org.springframework.util.Base64Utils#decode()
The following examples show how to use
org.springframework.util.Base64Utils#decode() .
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Example 1
Source File: GenerateKeyImpl.java From julongchain with Apache License 2.0 | 6 votes |
public PrivateKey LoadPrivateKeyAsPEM(String path, String algorithm) throws IOException, NoSuchAlgorithmException,InvalidKeySpecException { File file = new File(path); InputStream inputStream = new FileInputStream(file);//文件内容的字节流 InputStreamReader inputStreamReader= new InputStreamReader(inputStream); //得到文件的字符流 BufferedReader bufferedReader=new BufferedReader(inputStreamReader); //放入读取缓冲区 String readd=""; StringBuffer stringBuffer=new StringBuffer(); while ((readd=bufferedReader.readLine())!=null) { stringBuffer.append(readd); } inputStream.close(); String content=stringBuffer.toString(); String privateKeyPEM = content.replace("-----BEGIN PRIVATE KEY-----\n", "") .replace("-----END PRIVATE KEY-----", "").replace("\n", ""); byte[] asBytes = Base64Utils.decode(privateKeyPEM.getBytes()); PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(asBytes); KeyFactory keyFactory = KeyFactory.getInstance(algorithm); return keyFactory.generatePrivate(spec); }
Example 2
Source File: GenerateKeyImpl.java From julongchain with Apache License 2.0 | 6 votes |
public PublicKey LoadPublicKeyAsPEM(String path, String algorithm) throws IOException, NoSuchAlgorithmException,InvalidKeySpecException { File file = new File(path); InputStream inputStream = new FileInputStream(file);//文件内容的字节流 InputStreamReader inputStreamReader= new InputStreamReader(inputStream); //得到文件的字符流 BufferedReader bufferedReader=new BufferedReader(inputStreamReader); //放入读取缓冲区 String readd=""; StringBuffer stringBuffer=new StringBuffer(); while ((readd=bufferedReader.readLine())!=null) { stringBuffer.append(readd); } inputStream.close(); String content=stringBuffer.toString(); String strPublicKey = content.replace("-----BEGIN PUBLIC KEY-----\n", "") .replace("-----END PUBLIC KEY-----", "").replace("\n", ""); byte[] asBytes = Base64Utils.decode(strPublicKey.getBytes()); X509EncodedKeySpec spec = new X509EncodedKeySpec(asBytes); KeyFactory keyFactory = KeyFactory.getInstance(algorithm); return keyFactory.generatePublic(spec); }
Example 3
Source File: RSAUtils.java From danyuan-application with Apache License 2.0 | 5 votes |
/** * <p> * 用私钥对信息生成数字签名 * </p> * @param data 已加密数据 * @param privateKey 私钥(BASE64编码) * @return * @throws Exception */ public static byte[] sign(byte[] data, byte[] privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PrivateKey privateK = keyFactory.generatePrivate(pkcs8KeySpec); Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); signature.initSign(privateK); signature.update(data); return Base64Utils.encode(signature.sign()); }
Example 4
Source File: RSAUtils.java From danyuan-application with Apache License 2.0 | 5 votes |
/** * <p> * 校验数字签名 * </p> * @param data 已加密数据 * @param publicKey 公钥(BASE64编码) * @param sign 数字签名 * @return * @throws Exception */ public static boolean verify(byte[] data, byte[] publicKey, byte[] sign) throws Exception { byte[] keyBytes = Base64Utils.decode(publicKey); X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); PublicKey publicK = keyFactory.generatePublic(keySpec); Signature signature = Signature.getInstance(SIGNATURE_ALGORITHM); signature.initVerify(publicK); signature.update(data); return signature.verify(Base64Utils.decode(sign)); }
Example 5
Source File: RSAUtils.java From danyuan-application with Apache License 2.0 | 5 votes |
/** * <P> * 私钥解密 * </p> * @param encryptedData 已加密数据 * @param privateKey 私钥(BASE64编码) * @return * @throws Exception */ public static byte[] decryptByPrivateKey(byte[] encryptedData, byte[] privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.DECRYPT_MODE, privateK); int inputLen = encryptedData.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段解密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_DECRYPT_BLOCK) { cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); } else { cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_DECRYPT_BLOCK; } byte[] decryptedData = out.toByteArray(); out.close(); return decryptedData; }
Example 6
Source File: RSAUtils.java From danyuan-application with Apache License 2.0 | 5 votes |
/** * <p> * 公钥解密 * </p> * @param encryptedData 已加密数据 * @param publicKey 公钥(BASE64编码) * @return * @throws Exception */ public static byte[] decryptByPublicKey(byte[] encryptedData, byte[] publicKey) throws Exception { byte[] keyBytes = Base64Utils.decode(publicKey); X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key publicK = keyFactory.generatePublic(x509KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.DECRYPT_MODE, publicK); int inputLen = encryptedData.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段解密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_DECRYPT_BLOCK) { cache = cipher.doFinal(encryptedData, offSet, MAX_DECRYPT_BLOCK); } else { cache = cipher.doFinal(encryptedData, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_DECRYPT_BLOCK; } byte[] decryptedData = out.toByteArray(); out.close(); return decryptedData; }
Example 7
Source File: RSAUtils.java From danyuan-application with Apache License 2.0 | 5 votes |
/** * <p> * 公钥加密 * </p> * @param data 源数据 * @param publicKey 公钥(BASE64编码) * @return * @throws Exception */ public static byte[] encryptByPublicKey(byte[] data, byte[] publicKey) throws Exception { byte[] keyBytes = Base64Utils.decode(publicKey); X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key publicK = keyFactory.generatePublic(x509KeySpec); // 对数据加密 Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.ENCRYPT_MODE, publicK); int inputLen = data.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段加密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); } else { cache = cipher.doFinal(data, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_ENCRYPT_BLOCK; } byte[] encryptedData = out.toByteArray(); out.close(); return encryptedData; }
Example 8
Source File: RSAUtils.java From danyuan-application with Apache License 2.0 | 5 votes |
/** * <p> * 私钥加密 * </p> * @param data 源数据 * @param privateKey 私钥(BASE64编码) * @return * @throws Exception */ public static byte[] encryptByPrivateKey(byte[] data, byte[] privateKey) throws Exception { byte[] keyBytes = Base64Utils.decode(privateKey); PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes); KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM); Key privateK = keyFactory.generatePrivate(pkcs8KeySpec); Cipher cipher = Cipher.getInstance(keyFactory.getAlgorithm()); cipher.init(Cipher.ENCRYPT_MODE, privateK); int inputLen = data.length; ByteArrayOutputStream out = new ByteArrayOutputStream(); int offSet = 0; byte[] cache; int i = 0; // 对数据分段加密 while (inputLen - offSet > 0) { if (inputLen - offSet > MAX_ENCRYPT_BLOCK) { cache = cipher.doFinal(data, offSet, MAX_ENCRYPT_BLOCK); } else { cache = cipher.doFinal(data, offSet, inputLen - offSet); } out.write(cache, 0, cache.length); i++; offSet = i * MAX_ENCRYPT_BLOCK; } byte[] encryptedData = out.toByteArray(); out.close(); return encryptedData; }
Example 9
Source File: BaseController.java From spring-cloud-open-service-broker with Apache License 2.0 | 5 votes |
private String decodeOriginatingIdentityHeader(String encodedProperties) { try { return new String(Base64Utils.decode(encodedProperties.getBytes())); } catch (IllegalArgumentException e) { throw new ServiceBrokerInvalidOriginatingIdentityException("Error decoding JSON properties from " + ServiceBrokerRequest.ORIGINATING_IDENTITY_HEADER + " header in request", e); } }
Example 10
Source File: B64Utils.java From jeesupport with MIT License | 2 votes |
/** * Base64解码 * * @param _data * 待解码数据 * @return String 解码数据 */ public static byte[] s_decode( String _data ){ return Base64Utils.decode( _data.getBytes() ); }