ノード側と Java 側の両方から完全な CBC の例を投稿したと思います (128 ではなく 256): java.security.InvalidKeyException が発生した場合は、Java Cryptography Extension (JCE) の無制限強度の管轄ポリシー ファイルをインストールする必要があります。
Java 6 リンク
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Java の暗号化と復号化。
import java.security.MessageDigest;
import javax.crypto.spec.SecretKeySpec;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.Cipher;
import java.util.Base64;
import javax.xml.bind.DatatypeConverter;
public class AESExample {
private static byte[] iv = "0000000000000000".getBytes();
private static String decrypt(String encrypted, String seed)
throws Exception {
byte[] keyb = seed.getBytes("utf-8");
MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] thedigest = md.digest(keyb);
SecretKeySpec skey = new SecretKeySpec(thedigest, "AES");
Cipher dcipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
dcipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(seed.getBytes("UTF-8"), "AES"), new IvParameterSpec(iv));
byte[] clearbyte = dcipher.doFinal(DatatypeConverter
.parseHexBinary(encrypted));
return new String(clearbyte);
}
public static String encrypt(String content, String key) throws Exception {
byte[] input = content.getBytes("utf-8");
MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] thedigest = md.digest(key.getBytes("utf-8"));
SecretKeySpec skc = new SecretKeySpec(thedigest, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(key.getBytes("UTF-8"), "AES"), new IvParameterSpec(iv));
byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
ctLength += cipher.doFinal(cipherText, ctLength);
return DatatypeConverter.printHexBinary(cipherText);
}
public static String encrypt128(String content, String key) throws Exception {
byte[] input = content.getBytes("utf-8");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(DatatypeConverter.parseHexBinary(key), "AES"), new IvParameterSpec(iv));
byte[] encrypted = cipher.doFinal(content.getBytes("UTF-8"));
return DatatypeConverter.printHexBinary(encrypted);
}
public static void main(String[] args) throws Exception {
String data = "Here is my string";
String key = "1234567891123456";
String cipher = AESExample.encrypt(data, key);
String decipher = AESExample.decrypt(cipher, key);
System.out.println(cipher);
System.out.println(decipher);
System.out.println(AESExample.encrypt(data, "1234567891123456"));
System.out.println(AESExample.encrypt128(data, "d7900701209d3fbac4e214dfeb5f230f"));
}
}
以下の両方向のノード:
var crypto = require('crypto');
var iv = new Buffer('0000000000000000');
// reference to converting between buffers http://nodejs.org/api/buffer.html#buffer_new_buffer_str_encoding
// reference node crypto api http://nodejs.org/api/crypto.html#crypto_crypto_createcipheriv_algorithm_key_iv
// reference to ECB vs CBC cipher methods http://crypto.stackexchange.com/questions/225/should-i-use-ecb-or-cbc-encryption-mode-for-my-block-cipher
var encrypt = function(data, key) {
var decodeKey = crypto.createHash('sha256').update(key, 'utf-8').digest();
var cipher = crypto.createCipheriv('aes-256-cbc', decodeKey, iv);
return cipher.update(data, 'utf8', 'hex') + cipher.final('hex');
};
var decrypt = function(data, key) {
var encodeKey = crypto.createHash('sha256').update(key, 'utf-8').digest();
var cipher = crypto.createDecipheriv('aes-256-cbc', encodeKey, iv);
return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
};
var decrypt128 = function(data, key) {
var encodeKey = crypto.createHash('sha256').update(key, 'utf-8').digest();
var cipher = crypto.createDecipheriv('aes-128-cbc', new Buffer(key, 'hex'),
new Buffer(
iv));
return cipher.update(data, 'hex', 'utf8') + cipher.final('utf8');
};
var data = 'Here is my string'
var key = '1234567891123456';
var cipher = encrypt(data, key);
var decipher = decrypt(cipher, key);
console.log(cipher);
console.log(decipher);
// the string below was generated from the "main" in the java side
console.log(decrypt(
"79D78BEFC06827B118A2ABC6BD9D544E83F92930144432F22A6909EF18E0FDD1", key));
console.log(decrypt128(
"3EB7CF373E108ACA93E85D170C000938A6B3DCCED53A4BFC0F5A18B7DDC02499",
"d7900701209d3fbac4e214dfeb5f230f"));