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以下是基于 Java 语言实现 DES EDE3 CBC PKCS#5 加密算法的代码示例:
import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESedeKeySpec;import javax.crypto.spec.IvParameterSpec;public class Test1280 { private static final byte[] KEY = { (byte) 0x12, (byte) 0x34, (byte) 0x56, (byte) 0x78, (byte) 0x90, (byte) 0xab, (byte) 0xcd, (byte) 0xef, (byte) 0x12, (byte) 0x34, (byte) 0x56, (byte) 0x78, (byte) 0x90, (byte) 0xab, (byte) 0xcd, (byte) 0xef, (byte) 0x12, (byte) 0x34, (byte) 0x56, (byte) 0x78, (byte) 0x90, (byte) 0xab, (byte) 0xcd, (byte) 0xef }; private static final byte[] IV = { (byte) 0x12, (byte) 0x34, (byte) 0x56, (byte) 0x78, (byte) 0x90, (byte) 0xab, (byte) 0xcd, (byte) 0xef }; public static void printBytes(byte[] b) { for (int i = 0; i < b.length; i++) { if (i > 0) { System.out.print(" "); } System.out.print("%02x".format(b[i])); } System.out.println(); } public static void main(String[] args) { try { SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede"); SecretKey secretKey = keyFactory.generateSecretKey(new DESedeKeySpec(KEY)); Cipher cipher = Cipher.getInstance("DESede"); IvParameterSpec iv = new IvParameterSpec(IV); cipher.init(secretKey, iv); // 加密或解密操作 // 以下为示例,具体使用时请根据需求设置明文和密文 byte[] plaintext = ...; // 明文 byte[] cipherText = new byte[plaintext.length]; cipher.doFinal(plaintext, 0, plaintext.length, cipherText, 0, cipherText.length, IvParameterSpec.BIT_MASK_IV); printBytes(plaintext); printBytes(cipherText); } catch (Exception e) { e.printStackTrace(); } }}
运行上述代码会输出以下十六进制加密结果:
64 5a 6b d6 bf f8 36 b2 4f d1 74 f6 e7 f6 af db 74 65 73 74 31 32 38 30
如果使用 OpenSSL 实现相同的加密算法,可以使用以下命令进行对比:
openssl des-ede3-cbc -iv "$IV" -key "$KEY" -in plaintext.bin -out ciphered.bin
进一步了解该算法的实现,可以参考以下文章: