java - Error Input too large for RSA cipher on Android 5.0 -


i have problem "input large rsa cipher" adnroid 5.0 when use encrypt below:

public string rsaencryptstring(string strinputstring, int dwkeysize, publickey p) {     stringbuilder stringbuilder = null;     try {         int keysize = dwkeysize / 8;         byte[] bytes = strinputstring.getbytes("utf-32le");         int maxlength = keysize - 42;         int datalength = bytes.length;         int iterations = datalength / maxlength;         stringbuilder = new stringbuilder();         cipher cipher = cipher.getinstance("rsa/ecb/oaepwithsha1andmgf1padding");//4.4         cipher.init(cipher.encrypt_mode, p);         //cipher.init(cipher.decrypt_mode, p, new oaepparameterspec("sha-256", "mgf1", mgf1parameterspec.sha256, psource.pspecified.default));         (int = 0; <= iterations; i++) {             int index = (datalength - maxlength * > maxlength) ? maxlength : datalength - maxlength * i;             int offset = maxlength * i;             byte[] tempbytes = new byte[index];             system.arraycopy(bytes, offset, tempbytes, 0, tempbytes.length);             byte[] encryptedbytes = cipher.dofinal(tempbytes);             byte[] encryptedbytes1 = onreverse(encryptedbytes);             stringbuilder.append(base64.encodetostring(encryptedbytes1, base64.no_wrap));         }     } catch (exception e) {         e.printstacktrace();     }     return stringbuilder.tostring(); } 

but run @ android 4.4 below. should change algorithm correct version on android? thank answer.


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