一个php加密方法,怎么用java实现,高分! 100
最近做一个php项目的改写,里面有个调第三方webservices用到的加密方法,怎么样用java来实现它。php代码:functiongetSecureString($...
最近做一个php项目的改写,里面有个调第三方webservices用到的加密方法,怎么样用java来实现它。
php代码:
function getSecureString($s) {
$key = pack("H*" , '145b206c283b3c534a3822454c313a4f');
$iv = pack("H*" , '343c232c2a1b123d');
$encrypted = openssl_encrypt($s, 'bf-cbc', $key, OPENSSL_RAW_DATA, $iv);
$encryptedString = base64_encode($encrypted);
return $encryptedString;
}
好像里面的openssl_encrypt方法,我在网上找都找不到,不知道内部是怎么实现的。
第三方又是老外,交流不来,给了我文档,里面也没有提到这个加密原理。
50分求解答!答案解决了加50分
bf-cbc的加密方式,求java实现代码,跪求啊,快被逼疯 展开
php代码:
function getSecureString($s) {
$key = pack("H*" , '145b206c283b3c534a3822454c313a4f');
$iv = pack("H*" , '343c232c2a1b123d');
$encrypted = openssl_encrypt($s, 'bf-cbc', $key, OPENSSL_RAW_DATA, $iv);
$encryptedString = base64_encode($encrypted);
return $encryptedString;
}
好像里面的openssl_encrypt方法,我在网上找都找不到,不知道内部是怎么实现的。
第三方又是老外,交流不来,给了我文档,里面也没有提到这个加密原理。
50分求解答!答案解决了加50分
bf-cbc的加密方式,求java实现代码,跪求啊,快被逼疯 展开
2个回答
展开全部
Java OpenSSLPBEInputStream
import java.io.IOException;
import java.io.InputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
public class OpenSSLPBEInputStream extends InputStream {
private final static int READ_BLOCK_SIZE = 64 * 1024;
private final Cipher cipher;
private final InputStream inStream;
private final byte[] bufferCipher = new byte[READ_BLOCK_SIZE];
private byte[] bufferClear = null;
private int index = Integer.MAX_VALUE;
private int maxIndex = 0;
public OpenSSLPBEInputStream(final InputStream streamIn, String algIn, int iterationCount, char[] password)
throws IOException {
this.inStream = streamIn;
try {
byte[] salt = readSalt();
cipher = OpenSSLPBECommon.initializeCipher(password, salt, Cipher.DECRYPT_MODE, algIn, iterationCount);
} catch (Exception e) {
throw new IOException(e);
}
}
@Override
public int available() throws IOException {
return inStream.available();
}
@Override
public int read() throws IOException {
if (index > maxIndex) {
index = 0;
int read = inStream.read(bufferCipher);
if (read != -1) {
bufferClear = cipher.update(bufferCipher, 0, read);
}
if (read == -1 || bufferClear == null || bufferClear.length == 0) {
try {
bufferClear = cipher.doFinal();
} catch (Exception e) {
bufferClear = null;
}
}
if (bufferClear == null || bufferClear.length == 0) {
return -1;
}
maxIndex = bufferClear.length - 1;
}
if (bufferClear == null || bufferClear.length == 0) {
return -1;
}
return bufferClear[index++] & 0xff;
}
private byte[] readSalt() throws IOException {
byte[] headerBytes = new byte[OpenSSLPBECommon.OPENSSL_HEADER_STRING.length()];
inStream.read(headerBytes);
String headerString = new String(headerBytes, OpenSSLPBECommon.OPENSSL_HEADER_ENCODE);
if (!OpenSSLPBECommon.OPENSSL_HEADER_STRING.equals(headerString)) {
throw new IOException("unexpected file header " + headerString);
}
byte[] salt = new byte[OpenSSLPBECommon.SALT_SIZE_BYTES];
inStream.read(salt);
return salt;
}
}
Java OpenSSLPBEOutputStream
import java.io.IOException;
import java.io.OutputStream;
import java.security.SecureRandom;
import javax.crypto.Cipher;
public class OpenSSLPBEOutputStream extends OutputStream {
private static final int BUFFER_SIZE = 5 * 1024 * 1024;
private final Cipher cipher;
private final OutputStream outStream;
private final byte[] buffer = new byte[BUFFER_SIZE];
private int bufferIndex = 0;
public OpenSSLPBEOutputStream(final OutputStream outputStream, String algIn, int iterationCount,
char[] password) throws IOException {
outStream = outputStream;
try {
/* Create and use a random SALT for each instance of this output stream. */
byte[] salt = new byte[OpenSSLPBECommon.SALT_SIZE_BYTES];
new SecureRandom().nextBytes(salt);
cipher = OpenSSLPBECommon.initializeCipher(password, salt, Cipher.ENCRYPT_MODE, algIn, iterationCount);
/* Write header */
writeHeader(salt);
} catch (Exception e) {
throw new IOException(e);
}
}
@Override
public void write(int b) throws IOException {
buffer[bufferIndex] = (byte) b;
bufferIndex++;
if (bufferIndex == BUFFER_SIZE) {
byte[] result = cipher.update(buffer, 0, bufferIndex);
outStream.write(result);
bufferIndex = 0;
}
}
@Override
public void flush() throws IOException {
if (bufferIndex > 0) {
byte[] result;
try {
result = cipher.doFinal(buffer, 0, bufferIndex);
outStream.write(result);
} catch (Exception e) {
throw new IOException(e);
}
bufferIndex = 0;
}
}
@Override
public void close() throws IOException {
flush();
outStream.close();
}
private void writeHeader(byte[] salt) throws IOException {
outStream.write(OpenSSLPBECommon.OPENSSL_HEADER_STRING.getBytes(OpenSSLPBECommon.OPENSSL_HEADER_ENCODE));
outStream.write(salt);
}
}
Main Class 测试以上两个class
import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
class OpenSSLPBECommon {
protected static final int SALT_SIZE_BYTES = 8;
protected static final String OPENSSL_HEADER_STRING = "Salted__";
protected static final String OPENSSL_HEADER_ENCODE = "ASCII";
protected static Cipher initializeCipher(char[] password, byte[] salt, int cipherMode,
final String algorithm, int iterationCount) throws NoSuchAlgorithmException, InvalidKeySpecException,
InvalidKeyException, NoSuchPaddingException, InvalidAlgorithmParameterException {
PBEKeySpec keySpec = new PBEKeySpec(password);
SecretKeyFactory factory = SecretKeyFactory.getInstance(algorithm);
SecretKey key = factory.generateSecret(keySpec);
Cipher cipher = Cipher.getInstance(algorithm);
cipher.init(cipherMode, key, new PBEParameterSpec(salt, iterationCount));
return cipher;
}
}
来源引用
https://github.com/guardianproject/ChatSecureAndroid/tree/master/src/info/guardianproject/otr
2015-08-21
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先找出来是什么算法,JAVA 里面的现成的算法还是较多的。
看加密的方法,应该是 blowfish 请百度 还是较容易找到的 blowfish JAVA 实现
看加密的方法,应该是 blowfish 请百度 还是较容易找到的 blowfish JAVA 实现
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