AES 128 アルゴリズムを使用してテキストを暗号化し、PHP サーバーを使用して復号化しようとしています。問題は、暗号化されたテキストが正しくないことです。Web サイト ( http://phpaes.com/index.php#encrypt ) を使用してテストしています。サーバー側の復号化メソッドが Web サイトの結果を正しく復号化するため、正しい結果が得られます。
Web サイトの結果とまったく同じ暗号化テキストを作成する必要がありますか? 誰でもそれで私を助けることができます。
私の現在の暗号化コードは、このテキスト (EfYqMP/MMIoTRfE5J7GvpbAhNSdiffLkS6ZCWUdTCfoUnUEl7INa9jdQErXClzx7) を返します。最後の 16 文字を除いて、Web サイトの結果とまったく同じです !!!
私の暗号化コード:
public class AES4all {
public static Cipher getAESCBCEncryptor(byte[] keyBytes, byte[] IVBytes, String padding) throws Exception{
SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
IvParameterSpec ivSpec = new IvParameterSpec(IVBytes);
Cipher cipher = Cipher.getInstance("AES/CBC/"+padding);
cipher.init(Cipher.ENCRYPT_MODE, key, ivSpec);
return cipher;
}
public static Cipher getAESCBCDecryptor(byte[] keyBytes, byte[] IVBytes, String padding) throws Exception{
SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
IvParameterSpec ivSpec = new IvParameterSpec(IVBytes);
Cipher cipher = Cipher.getInstance("AES/CBC/"+padding);
cipher.init(Cipher.DECRYPT_MODE, key, ivSpec);
return cipher;
}
public static Cipher getAESECBEncryptor(byte[] keyBytes, String padding) throws Exception{
SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/"+padding);
cipher.init(Cipher.ENCRYPT_MODE, key);
return cipher;
}
public static Cipher getAESECBDecryptor(byte[] keyBytes, String padding) throws Exception{
SecretKeySpec key = new SecretKeySpec(keyBytes, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/"+padding);
cipher.init(Cipher.DECRYPT_MODE, key);
return cipher;
}
public static byte[] encrypt(Cipher cipher, byte[] dataBytes) throws Exception{
ByteArrayInputStream bIn = new ByteArrayInputStream(dataBytes);
CipherInputStream cIn = new CipherInputStream(bIn, cipher);
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
int ch;
while ((ch = cIn.read()) >= 0) {
bOut.write(ch);
}
return bOut.toByteArray();
}
public static byte[] decrypt(Cipher cipher, byte[] dataBytes) throws Exception{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
CipherOutputStream cOut = new CipherOutputStream(bOut, cipher);
cOut.write(dataBytes);
cOut.close();
return bOut.toByteArray();
}
/**
* @param args
*/
public static byte[] demo1encrypt(byte[] keyBytes, byte[] ivBytes, String sPadding, byte[] messageBytes) throws Exception {
Cipher cipher = getAESCBCEncryptor(keyBytes, ivBytes, sPadding);
return encrypt(cipher, messageBytes);
}
public static byte[] demo1decrypt(byte[] keyBytes, byte[] ivBytes, String sPadding, byte[] encryptedMessageBytes) throws Exception {
Cipher decipher = getAESCBCDecryptor(keyBytes, ivBytes, sPadding);
return decrypt(decipher, encryptedMessageBytes);
}
public static byte[] demo2encrypt(byte[] keyBytes, String sPadding, byte[] messageBytes) throws Exception {
Cipher cipher = getAESECBEncryptor(keyBytes, sPadding);
return encrypt(cipher, messageBytes);
}
public static byte[] demo2decrypt(byte[] keyBytes, String sPadding, byte[] encryptedMessageBytes) throws Exception {
Cipher decipher = getAESECBDecryptor(keyBytes, sPadding);
return decrypt(decipher, encryptedMessageBytes);
}
public static void main(String[] args) throws Exception {
String sDemoMesage = "This is a demo message from Java!";
byte[] demoMesageBytes = sDemoMesage.getBytes();
//shared secret
byte[] demoKeyBytes = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
// Initialization Vector - usually a random data, stored along with the shared secret,
// or transmitted along with a message.
// Not all the ciphers require IV - we use IV in this particular sample
byte[] demoIVBytes = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
String sPadding = "ISO10126Padding"; //"ISO10126Padding", "PKCS5Padding"
System.out.println("Demo Key (base64): "+ new String(SimpleBase64Encoder.encode(demoKeyBytes)));
System.out.println("Demo IV (base64): "+ new String(SimpleBase64Encoder.encode(demoIVBytes)));
byte[] demo1EncryptedBytes = demo1encrypt(demoKeyBytes, demoIVBytes, sPadding, demoMesageBytes);
System.out.println("Demo1 encrypted (base64): "+ new String(SimpleBase64Encoder.encode(demo1EncryptedBytes)));
byte[] demo1DecryptedBytes = demo1decrypt(demoKeyBytes, demoIVBytes, sPadding, demo1EncryptedBytes);
System.out.println("Demo1 decrypted message : "+new String(demo1DecryptedBytes));
byte[] demo2EncryptedBytes = demo2encrypt(demoKeyBytes, sPadding, demoMesageBytes);
System.out.println("Demo2 encrypted (base64): "+ new String(SimpleBase64Encoder.encode(demo2EncryptedBytes)));
byte[] demo2DecryptedBytes = demo2decrypt(demoKeyBytes, sPadding, demo2EncryptedBytes);
System.out.println("Demo2 decrypted message : "+new String(demo2DecryptedBytes));
}
}
public class SimpleBase64Encoder {
// Mapping table from 6-bit nibbles to Base64 characters.
private static char[] map1 = new char[64];
static {
int i=0;
for (char c='A'; c<='Z'; c++) map1[i++] = c;
for (char c='a'; c<='z'; c++) map1[i++] = c;
for (char c='0'; c<='9'; c++) map1[i++] = c;
map1[i++] = '+'; map1[i++] = '/'; }
// Mapping table from Base64 characters to 6-bit nibbles.
private static byte[] map2 = new byte[128];
static {
for (int i=0; i<map2.length; i++) map2[i] = -1;
for (int i=0; i<64; i++) map2[map1[i]] = (byte)i; }
/**
* Encodes a string into Base64 format.
* No blanks or line breaks are inserted.
* @param s a String to be encoded.
* @return A String with the Base64 encoded data.
*/
public static String encodeString (String s) {
return new String(encode(s.getBytes())); }
/**
* Encodes a byte array into Base64 format.
* No blanks or line breaks are inserted.
* @param in an array containing the data bytes to be encoded.
* @return A character array with the Base64 encoded data.
*/
public static char[] encode (byte[] in) {
return encode(in,in.length); }
/**
* Encodes a byte array into Base64 format.
* No blanks or line breaks are inserted.
* @param in an array containing the data bytes to be encoded.
* @param iLen number of bytes to process in <code>in</code>.
* @return A character array with the Base64 encoded data.
*/
public static char[] encode (byte[] in, int iLen) {
int oDataLen = (iLen*4+2)/3; // output length without padding
int oLen = ((iLen+2)/3)*4; // output length including padding
char[] out = new char[oLen];
int ip = 0;
int op = 0;
while (ip < iLen) {
int i0 = in[ip++] & 0xff;
int i1 = ip < iLen ? in[ip++] & 0xff : 0;
int i2 = ip < iLen ? in[ip++] & 0xff : 0;
int o0 = i0 >>> 2;
int o1 = ((i0 & 3) << 4) | (i1 >>> 4);
int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);
int o3 = i2 & 0x3F;
out[op++] = map1[o0];
out[op++] = map1[o1];
out[op] = op < oDataLen ? map1[o2] : '='; op++;
out[op] = op < oDataLen ? map1[o3] : '='; op++; }
return out; }
/**
* Decodes a string from Base64 format.
* @param s a Base64 String to be decoded.
* @return A String containing the decoded data.
* @throws IllegalArgumentException if the input is not valid Base64 encoded data.
*/
public static String decodeString (String s) {
return new String(decode(s)); }
/**
* Decodes a byte array from Base64 format.
* @param s a Base64 String to be decoded.
* @return An array containing the decoded data bytes.
* @throws IllegalArgumentException if the input is not valid Base64 encoded data.
*/
public static byte[] decode (String s) {
return decode(s.toCharArray()); }
/**
* Decodes a byte array from Base64 format.
* No blanks or line breaks are allowed within the Base64 encoded data.
* @param in a character array containing the Base64 encoded data.
* @return An array containing the decoded data bytes.
* @throws IllegalArgumentException if the input is not valid Base64 encoded data.
*/
public static byte[] decode (char[] in) {
int iLen = in.length;
if (iLen%4 != 0) throw new IllegalArgumentException ("Length of Base64 encoded input string is not a multiple of 4.");
while (iLen > 0 && in[iLen-1] == '=') iLen--;
int oLen = (iLen*3) / 4;
byte[] out = new byte[oLen];
int ip = 0;
int op = 0;
while (ip < iLen) {
int i0 = in[ip++];
int i1 = in[ip++];
int i2 = ip < iLen ? in[ip++] : 'A';
int i3 = ip < iLen ? in[ip++] : 'A';
if (i0 > 127 || i1 > 127 || i2 > 127 || i3 > 127)
throw new IllegalArgumentException ("Illegal character in Base64 encoded data.");
int b0 = map2[i0];
int b1 = map2[i1];
int b2 = map2[i2];
int b3 = map2[i3];
if (b0 < 0 || b1 < 0 || b2 < 0 || b3 < 0)
throw new IllegalArgumentException ("Illegal character in Base64 encoded data.");
int o0 = ( b0 <<2) | (b1>>>4);
int o1 = ((b1 & 0xf)<<4) | (b2>>>2);
int o2 = ((b2 & 3)<<6) | b3;
out[op++] = (byte)o0;
if (op<oLen) out[op++] = (byte)o1;
if (op<oLen) out[op++] = (byte)o2; }
return out; }
private SimpleBase64Encoder() {}
} // end class SimpleBase64Encoder