Java Code Examples for org.springframework.util.Base64Utils#decode()

The following examples show how to use org.springframework.util.Base64Utils#decode() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: GenerateKeyImpl.java From julongchain with Apache License 2.0

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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

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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

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/**
 * <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

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/**
 * <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

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/**
 * <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

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/**
 * <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

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/**
 * <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

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/**
 * <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

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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

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/**
 * 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() );
}