# easy-crypto **Repository Path**: mywebgame/easy-crypto ## Basic Information - **Project Name**: easy-crypto - **Description**: 这是一个高性能的加解密文件(对文件进行aes、rsa、3des、sm2、sm4、base64等算法进行加密)(或其它需要加密的)和获取文件签名(md5、sha、crc等)工具包 - **Primary Language**: Java - **License**: MulanPSL-2.0 - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 11 - **Created**: 2023-08-10 - **Last Updated**: 2023-08-10 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # 这是一个高性能的加解密文件(对文件进行aes、rsa、3des、sm2、sm4、base64等算法进行加密)(或其它需要加密的)和获取文件签名(md5、sha、crc等)工具包 ## 特点 - 文件加密 - 特点一: 使用流式加密/解密， 性能更好，内存损耗更少(几乎不消耗额外内存)；更加方便，更易读 - 特点二: 加密底层均为性能强大的(AES/SM4)加密，外层使用自定义加密算法加密，性能显著提升 - 特点三: 代码结构简单，原理易懂，更加方便扩展， 可使用任意一种加密算法进行文件或其它需要加密的 - 文件校验 - 特点一: 重写了java自带的 `CheckedInputStream`和 `CheckedOutputStream` 使其支持主流文件校验值，如md5、sha256、crc64等 - 特点二: 支持多个校验值一起获取，比如同时获取某文件的 md5和sha256 - 特点三: 自带了 md5、sha256、crc64 等主流校验算法，开箱即用,且代码简单易于扩展. ## 文件加密示例代码 - 中央仓库maven ```xml cloud.tianai.crypto easy-crypto 1.0.basic ``` - 这里示例使用 3des和RSA和自定义加密算法(sm4)和base64 进行加解密文件操作，各位可以使用自己的加密算法进行加解密 ```java public class CryptoTest { /** * 使用 CipherInputStream 加密 源文件, 使用3des加密 */ @Test public void testEncryptByInputStreamAndDes() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); // 包装成加密流 CipherInputStream cipherInputStream = new CipherInputStream(source, CryptoCipherBuilder.buildDes3Crypt("123456781234567812345678", true)); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); write(cipherInputStream,outputStream); outputStream.close(); cipherInputStream.close(); } /** * 使用 CipherInputStream 解密加密的文件, 使用3des解密 */ @Test public void testDecryptByInputStreamAndDes() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); // 包装成解密流 CryptoCipher cryptoCipher = CryptoCipherBuilder.buildDes3Crypt("123456781234567812345678", false); CipherInputStream cipherInputStream = new CipherInputStream(source, cryptoCipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\解密-预览20M.pdf"); write(cipherInputStream,outputStream); outputStream.close(); cipherInputStream.close(); } /** * 使用 CipherOutputStream 加密 源文件, 使用3des加密 */ @Test public void testEncryptByOutputStreamAndDes() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); // 包装输出流为加密流 CryptoCipher cryptoCipher = CryptoCipherBuilder.buildDes3Crypt("123456781234567812345678", true); CipherOutputStream cipherOutputStream = new CipherOutputStream(outputStream, cryptoCipher); write(source,cipherOutputStream); outputStream.close(); cipherOutputStream.close(); } // 使用rsa加解密 @Test public void genRsaKey() { String[] keys = RsaUtils.genKeyPair(1024); String privateKey = keys[0]; String publicKey = keys[1]; // 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 System.out.println(privateKey); // MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPt5L72FHygiH9Lxp+z26tIoXLfj47SqlQUYNN+uHsDGfsv39sBg30H5VVnJUjxeMHiI0j8UCoTeuMdFbAMm5zlGzta/lCaqQlV8GXTO/cKj117C0ezmUhutY4yl9QThLoCJ/TT4CpJT35h1sF4gbH9q5rGpKJvTini4Gf41CEBQIDAQAB System.out.println(publicKey); } /** * 使用 CipherInputStream 加密 源文件, 使用RSA公钥加密 */ @Test public void testEncryptByInputStreamAndRsa() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); // 包装成加密流, 使用公钥加密 RSAPublicKey publicKey = RsaUtils.getPublicKeyFromPemX509("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPt5L72FHygiH9Lxp+z26tIoXLfj47SqlQUYNN+uHsDGfsv39sBg30H5VVnJUjxeMHiI0j8UCoTeuMdFbAMm5zlGzta/lCaqQlV8GXTO/cKj117C0ezmUhutY4yl9QThLoCJ/TT4CpJT35h1sF4gbH9q5rGpKJvTini4Gf41CEBQIDAQAB"); CryptoCipher cryptoCipher = CryptoCipherBuilder.buildRsaCrypt(publicKey, true); CipherInputStream cipherInputStream = new CipherInputStream(source, cryptoCipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); write(cipherInputStream,outputStream); outputStream.close(); cipherInputStream.close(); } /** * 使用 CipherInputStream 解密加密的文件, 使用rsa私钥解密 */ @Test public void testDecryptByInputStreamAndRsa() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); // 包装成解密流, 使用私钥解密 RSAPrivateKey privateKey = RsaUtils.getPrivateKeyFromPemPKCS8("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"); CryptoCipher cryptoCipher = CryptoCipherBuilder.buildRsaCrypt(privateKey, false); CipherInputStream cipherInputStream = new CipherInputStream(source, cryptoCipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\解密-预览20M.pdf"); write(cipherInputStream,outputStream); outputStream.close(); cipherInputStream.close(); } /** * 使用 CipherOutputStream 加密 源文件, 使用RSA公钥加密 */ @Test public void testEncryptByOutputStreamAndRsa() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); // 包装输出流为加密流, 使用公钥加密 RSAPublicKey publicKey = RsaUtils.getPublicKeyFromPemX509("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPt5L72FHygiH9Lxp+z26tIoXLfj47SqlQUYNN+uHsDGfsv39sBg30H5VVnJUjxeMHiI0j8UCoTeuMdFbAMm5zlGzta/lCaqQlV8GXTO/cKj117C0ezmUhutY4yl9QThLoCJ/TT4CpJT35h1sF4gbH9q5rGpKJvTini4Gf41CEBQIDAQAB"); CryptoCipher cryptoCipher = CryptoCipherBuilder.buildRsaCrypt(publicKey, true); CipherOutputStream cipherOutputStream = new CipherOutputStream(outputStream, cryptoCipher); write(source,cipherOutputStream); outputStream.close(); cipherOutputStream.close(); } /** * 使用 CipherInputStream 加密 源文件, 使用自定义算法加密 */ @Test public void testEncryptByInputStreamAndCustom() throws IOException, NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException, InvalidKeyException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); // 创建自定义加密算法 Cipher cipher = Cipher.getInstance("SM4/ECB/NoPadding", BouncyCastleProvider.PROVIDER_NAME); byte[] key = Base64.getDecoder().decode("aW6sIKDsH4U9QIXjIshTHw=="); Key sm4Key = new SecretKeySpec(key, "SM4"); cipher.init(Cipher.ENCRYPT_MODE, sm4Key); AesCryptoCipher aesCryptoCipher = new AesCryptoCipher(cipher, Cipher.ENCRYPT_MODE); // 包装成加密流, 使用SM4加密 CipherInputStream cipherInputStream = new CipherInputStream(source, aesCryptoCipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); write(cipherInputStream, outputStream); outputStream.close(); cipherInputStream.close(); } /** * 使用 CipherInputStream 解密加密的文件, 使用自定义算法解密 * */ @Test public void testDecryptByInputStreamAndCustom() throws IOException, NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException, InvalidKeyException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); // 创建SM4算法 Cipher cipher = Cipher.getInstance("SM4/ECB/NoPadding", BouncyCastleProvider.PROVIDER_NAME); byte[] key = Base64.getDecoder().decode("aW6sIKDsH4U9QIXjIshTHw=="); Key sm4Key = new SecretKeySpec(key, "SM4"); cipher.init(Cipher.DECRYPT_MODE, sm4Key); AesCryptoCipher aesCryptoCipher = new AesCryptoCipher(cipher, Cipher.DECRYPT_MODE); // 包装成解密流, 使用SM4解密 CipherInputStream cipherInputStream = new CipherInputStream(source, aesCryptoCipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\解密-预览20M.pdf"); write(cipherInputStream, outputStream); outputStream.close(); cipherInputStream.close(); } /** * 使用 CipherInputStream 加密 源文件, 使用base64加密 */ @Test public void testEncryptByInputStreamAndBase64() throws IOException { long start = System.currentTimeMillis(); // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); // 包装成加密流 //注意： 这里指定的 bufferSize会影响到加密流的buffer， 也就是说这里指定的buff长度和加密流中的长度不一样时，会使用这里的长度, // 因为类似于base64这种加密后解密需要加密长度的加密(转码)算法时，必须由算法本身计算长度 Base64CryptoCipher cipher = new Base64CryptoCipher(Cipher.ENCRYPT_MODE, 4096); CipherInputStream cipherInputStream = new CipherInputStream(source, cipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); write(cipherInputStream, outputStream); outputStream.close(); cipherInputStream.close(); long end = System.currentTimeMillis(); // 1207 1248 1238 1230 1169 1247 // 775 745 794 797 764 790 System.out.println("耗时:" + (end - start)); } /** * 使用 CipherInputStream 解密加密的文件, 使用base64解密 * */ @Test public void testDecryptByInputStreamAndBase64() throws IOException, NoSuchPaddingException, NoSuchAlgorithmException, NoSuchProviderException, InvalidKeyException { long start = System.currentTimeMillis(); // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\加密-预览20M.pdf"); //注意： 这里指定的 bufferSize会影响到加密流的buffer， 也就是说这里指定的buff长度和加密流中的长度不一样时，会使用这里的长度, // 因为类似于base64这种加密后解密需要加密长度的加密(转码)算法时，必须由算法本身计算长度 Base64CryptoCipher cipher = new Base64CryptoCipher(Cipher.DECRYPT_MODE, 4096); CipherInputStream cipherInputStream = new CipherInputStream(source, cipher); // 输出 FileOutputStream outputStream = new FileOutputStream("C:\\Users\\Thinkpad\\Desktop\\解密-预览20M.pdf"); write(cipherInputStream, outputStream); outputStream.close(); cipherInputStream.close(); long end = System.currentTimeMillis(); System.out.println("耗时:" + (end - start)); } public void write(InputStream input, OutputStream output) throws IOException { byte[] buffer = new byte[4096]; int n; while (-1 != (n = input.read(buffer))) { output.write(buffer, 0, n); } } } ``` ## 文件校验示例代码 - 这里示例仅演示`EnhanceCheckedInputStream`的用法， `EnhanceCheckedOutputStream`用法同理 ```java public class CheckedTest { /** * 获取一个文件的 md5 */ @Test public void getFileMd5() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); Md5Checksum md5Checksum = new Md5Checksum(); EnhanceCheckedInputStream checkedInputStream = new EnhanceCheckedInputStream(source, md5Checksum); readAll(checkedInputStream); byte[] md5 = md5Checksum.getCheckValue(); System.out.println("md5:" + Hex.toHexString(md5)); } /** * 获取一个文件的 crc64 */ @Test public void getFileCrc64() throws IOException { // 源文件 FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); CRC64Checksum crc64Checksum = new CRC64Checksum(); EnhanceCheckedInputStream checkedInputStream = new EnhanceCheckedInputStream(source, crc64Checksum); readAll(checkedInputStream); Long crc64 = crc64Checksum.getCheckValue(); System.out.println("crc64:" + crc64); } /** * 同时获取一个文件的 md5、crc64、sha256 */ @Test public void getFileChecksum() throws IOException { Md5Checksum md5Checksum = new Md5Checksum(); CRC64Checksum crc64Checksum = new CRC64Checksum(); Sha256Checksum sha256Checksum = new Sha256Checksum(); MultiPartChecksum multiPartChecksum = new MultiPartChecksum(md5Checksum, crc64Checksum, sha256Checksum); FileInputStream source = new FileInputStream("C:\\Users\\Thinkpad\\Desktop\\预览20M.pdf"); EnhanceCheckedInputStream checkedInputStream = new EnhanceCheckedInputStream(source, multiPartChecksum); readAll(checkedInputStream); System.out.println("md5:" + Hex.toHexString(md5Checksum.getCheckValue())); System.out.println("crc64:" + crc64Checksum.getCheckValue()); System.out.println("sha256:" + Hex.toHexString(sha256Checksum.getCheckValue())); } public void readAll(InputStream input) throws IOException { byte[] buffer = new byte[4096]; while (-1 != input.read(buffer)) { } } } ``` # qq群: 1021884609