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Issues with rsa_decrypt. I'm using chilkat c/c++ for android and sometimes meet this issues as below. Please tell me the cause and how to fix it !!!

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This is my code:

rsa.put_EncodingMode("hex");
rsa.put_Utf8(true);
rsa.put_Charset("utf-8");
rsa.ImportPrivateKey(privateKey.c_str());
const char *decryptStr =
rsa.decryptStringENC(inputString.c_str(), true); if (decryptStr != NULL) {
_lastErrorCode = ErrorCode::SUCCESS ; _lastErrorText = ""; return decryptStr; } _lastErrorCode =
ErrorCode::INVALID_INPUT ;
_lastErrorText = string(rsa.lastErrorText()); return
"";

And this is Log when error happening.

ChilkatLog: DecryptStringENC:
DllDate: Mar 11 2016 ChilkatVersion: 9.5.0.56 UnlockPrefix: XXXXXX Architecture: Little Endian; 32-bit Language: Android C/C++
VerboseLogging: 0 usePrivateKey: 1
rsaDecryptBytes: rsa_decrypt:
Pkcs1_5_decode: Invalid PKCS v1.5 PS length ps_len: 126
--Pkcs1_5_decode Packet:
7DB736ED6599DB674C40C8FAF1146E7FC1A52E49773094102E955D3C8D44 B521EF16523DC24333D77C8EC6D4F3316EEB78506623F9DA7746B152062B8211FFB859739EB98CBD0FB15B6AB27 BCF16FC5325F01EA03902EB597158F1FBE83B178EDBCA9B269196C25D7DE590EC4F513D45695FEB3DE464BA7201D1AC1785DF78BF --rsa_decrypt
--rsaDecryptBytes decrypt: Elapsed time: 34 millisec Failed.
--DecryptStringENC
--ChilkatLog


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