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try {
securerandom sr = new securerandom();
deskeyspec dks = new deskeyspec(deskey.getbytes());
secretkeyfactory keyfactory = secretkeyfactory.getinstance("des");
secretkey securekey = keyfactory.generatesecret(dks);
ivparameterspec iv = new ivparameterspec(passkey.getbytes());
cipher cipher = cipher.getinstance("des/cbc/pkcs5padding");
cipher.init(mode, securekey, iv, sr);
file encoderfile = new file(filepath + file.separator + "encoder");
if (!encoderfile.exists()) {
encoderfile.mkdir();
}
is = new fileinputstream(filepath + file.separator + filename);
out = new fileoutputstream(filepath + file.separator + "encoder"
+ file.separator + filename);
cis = new cipherinputstream(is, cipher);
byte[] buffer = new byte[1024];
int r;
while ((r = cis.read(buffer)) > 0) {
out.write(buffer, 0, r);
}
} catch (exception e) {
e.printstacktrace();
} finally {
try {
if (is != null) {
is.close();
}
if (cis != null) {
cis.close();
}
if (out != null) {
out.close();
}
} catch (exception e1){
}
}
return filepath + file.separator + "encoder" + file.separator
+ filename;
}
/**@comments :对字符串进行加密
* @param src 源字符串
* @param mode 加密模式 加密:cipher.encrypt_mode 解密:cipher.decrypt_mode
* @return
*/
public static string encoderordecoder( string src, int mode) {
string tag="";
inputstream is = null;
outputstream out = null;
cipherinputstream cis = null;
try {
securerandom sr = new securerandom();
deskeyspec dks = new deskeyspec(deskey.getbytes());
secretkeyfactory keyfactory = secretkeyfactory.getinstance("des");
secretkey securekey = keyfactory.generatesecret(dks);
ivparameterspec iv = new ivparameterspec(passkey.getbytes());
cipher cipher = cipher.getinstance("des/cbc/pkcs5padding");
cipher.init(mode, securekey, iv, sr);
cis = new cipherinputstream(new bytearrayinputstream(src.getbytes()) , cipher);
out=new bytearrayoutputstream();
byte[] buffer = new byte[1024];
int r;
while ((r = cis.read(buffer)) > 0) {
out.write(buffer, 0, r);
}
tag=out.tostring();
} catch (exception e) {
e.printstacktrace();
} finally {
try {
if (is != null) {
is.close();
}
if (cis != null) {
cis.close();
}
if (out != null) {
out.close();
}
} catch (exception e1){
}
}
return tag;
}
public static void main(string[] args) {
system.out.println("aaa");
string t=encoderordecoder("aaa", cipher.encrypt_mode );
system.out.println(t);
system.out.println(encoderordecoder(t, cipher.decrypt_mode ));
}
}
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