好的 我还有一个问题 是这样的 我的win8 32 位 安装了1.75的java sdk 用了eclipse 对AES 16位的key 不能进行加密 你可以帮我看看 是什么原因？
[Java] 纯文本查看 复制代码 /**
*
*/
/**
* @author Administrator
*
*/
package aiyiAES;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.security.InvalidKeyException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.spec.SecretKeySpec;
public class AES {
private static byte[] a = {105,113,105,121,105,49,50,51,41,40,42,0,0,0,0,0};
private static String encrypt(String paramString) throws Exception
{
byte[] arrayOfByte = paramString.getBytes();
SecretKeySpec localSecretKeySpec = new SecretKeySpec(a, "AES");
Cipher localCipher = Cipher.getInstance("AES/ECB/PKCS7Padding", "BC");
localCipher.init(1, localSecretKeySpec);
String str = new String(Base64.encode(localCipher.doFinal(arrayOfByte)));
return str;
}
private static String decrypt(String paramString) throws Exception
{
byte[] arrayOfByte =Base64.decode(paramString);
SecretKeySpec localSecretKeySpec = new SecretKeySpec(a, "AES");
Cipher localCipher = Cipher.getInstance("AES/ECB/PKCS7Padding", "BC");
localCipher.init(2, localSecretKeySpec);
String str = new String(localCipher.doFinal(arrayOfByte));
return str;
}
public static void main(String[] args) throws Exception{
String str1="ll+ncuSKhViLq1Y4W4/69Pb3qSzMO+i9bb8X6qsUoYQ=";
String str3 = encrypt(str1);
System.out.println(new String(str3));
}
}
class Base64 {
private static final char[] legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();
/**
* data[]进行编码
* @param data
* @return
*/
public static String encode(byte[] data) {
int start = 0;
int len = data.length;
StringBuffer buf = new StringBuffer(data.length * 3 / 2);
int end = len - 3;
int i = start;
int n = 0;
while (i <= end) {
int d = ((((int) data[i]) & 0x0ff) << 16)
| ((((int) data[i + 1]) & 0x0ff) << 8)
| (((int) data[i + 2]) & 0x0ff);
buf.append(legalChars[(d >> 18) & 63]);
buf.append(legalChars[(d >> 12) & 63]);
buf.append(legalChars[(d >> 6) & 63]);
buf.append(legalChars[d & 63]);
i += 3;
if (n++ >= 14) {
n = 0;
buf.append(" ");
}
}
if (i == start + len - 2) {
int d = ((((int) data[i]) & 0x0ff) << 16)
| ((((int) data[i + 1]) & 255) << 8);
buf.append(legalChars[(d >> 18) & 63]);
buf.append(legalChars[(d >> 12) & 63]);
buf.append(legalChars[(d >> 6) & 63]);
buf.append("=");
} else if (i == start + len - 1) {
int d = (((int) data[i]) & 0x0ff) << 16;
buf.append(legalChars[(d >> 18) & 63]);
buf.append(legalChars[(d >> 12) & 63]);
buf.append("==");
}
return buf.toString();
}
private static int decode(char c) {
if (c >= 'A' && c <= 'Z')
return ((int) c) - 65;
else if (c >= 'a' && c <= 'z')
return ((int) c) - 97 + 26;
else if (c >= '0' && c <= '9')
return ((int) c) - 48 + 26 + 26;
else
switch (c) {
case '+':
return 62;
case '/':
return 63;
case '=':
return 0;
default:
throw new RuntimeException("unexpected code: " + c);
}
}
/**
* Decodes the given Base64 encoded String to a new byte array. The byte
* array holding the decoded data is returned.
*/
public static byte[] decode(String s) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
decode(s, bos);
} catch (IOException e) {
throw new RuntimeException();
}
byte[] decodedBytes = bos.toByteArray();
try {
bos.close();
bos = null;
} catch (IOException ex) {
System.err.println("Error while decoding BASE64: " + ex.toString());
}
return decodedBytes;
}
private static void decode(String s, OutputStream os) throws IOException {
int i = 0;
int len = s.length();
while (true) {
while (i < len && s.charAt(i) <= ' ')
i++;
if (i == len)
break;
int tri = (decode(s.charAt(i)) << 18)
+ (decode(s.charAt(i + 1)) << 12)
+ (decode(s.charAt(i + 2)) << 6)
+ (decode(s.charAt(i + 3)));
os.write((tri >> 16) & 255);
if (s.charAt(i + 2) == '=')
break;
os.write((tri >> 8) & 255);
if (s.charAt(i + 3) == '=')
break;
os.write(tri & 255);
i += 4;
}
}
}
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