class HCSslComm

utiltity class to use openssl

Public Methods

int StartSsl()

initialize openssl library.

int StopSsl()

finanlize openssl library.

int ClientStartSsl()

establish SSL resources for being run by SSL client,

int ClientStopSsl()

release SSL resource for SSL client.

int ServerStartSsl( char* szCertFileName, char* szKeyFileName )

establish SSL resources for being run by SSL server.

int ServerStopSsl()

release resource for SSL server.

SSL* ClientConnectSsl( SOCKET iFd )

connect SSL server.

int ClientCloseSsl( SSL* ssl )

close SSL connection with SSL server.

SSL* ServerAcceptSsl( SOCKET iFd )

accept SSL connection.

int ServerCloseSsl( SSL* ssl )

close SSL connection for SSL client.

int SendSsl( SSL* ssl, const char* szBuf, int iBufLen )

send data with SSL protocol.

int RecvSsl( SSL* ssl, char* szBuf, int iBufLen, int iSecond )

receive data with SSL protocol

char* GetErrorMessage()

return error message.

int EncryptString( char* szUserKey, char* szInput, char* szOutput, int iOutputLen )

encrypt string

int DecryptString( char* szUserKey, char* szInput, char* szOutput, int iOutputLen )

decrypt encrytpion string.

unsigned char* GetMessageDigest( char* szAlgorithm, char* szBuf, unsigned int iLen, int* iReturnLen )

Return HASH value about inputed string.

Documentation

utiltity class to use openssl

int StartSsl()

initialize openssl library.

Returns:

if success, return 0. if already intialize, return 1. otherwise return -1. if you want to read error message, see m_szErrorMessage variable.

int StopSsl()

finanlize openssl library.

Returns:

if success, return 0. otherwise return -1. if you want to read error message, see m_szErrorMessage variable.

int ClientStartSsl()

establish SSL resources for being run by SSL client,

Returns:

if success, return 0. otherwise return -1.

Author:

Yee Young Han

int ClientStopSsl()

release SSL resource for SSL client.

Returns:

if success, return 0. otherwise return -1.

Author:

Yee Young Han

int ServerStartSsl( char* szCertFileName, char* szKeyFileName )

establish SSL resources for being run by SSL server.

Parameters:

szCertFileName - cert file name - full path name
szKeyFileName - key file name - full path name

Returns:

if success, return 0. otherwise return -1.

Author:

Yee Young Han

int ServerStopSsl()

release resource for SSL server.

Returns:

if success, return 0. otherwise return -1.

Author:

Yee Young Han

SSL* ClientConnectSsl( SOCKET iFd )

connect SSL server.

Parameters:

iFd - socket descriptor

Returns:

if success, return SSL struct pointer. otherwise return NULL.

Author:

Yee Young Han

int ClientCloseSsl( SSL* ssl )

close SSL connection with SSL server.

Parameters:

ssl - SSL struct

Returns:

if success, return 0. otherwise return -1.

Author:

Yee Young Han

SSL* ServerAcceptSsl( SOCKET iFd )

accept SSL connection.

Parameters:

iFd - ¼ÒÄÏ ÇÚµé

Returns:

if success, return SSL struct pointer. otherwise return NULL.

Author:

Yee Young Han

int ServerCloseSsl( SSL* ssl )

close SSL connection for SSL client.

Returns:

if success, return 0. otherwise return -1.

Author:

Yee Young Han

int SendSsl( SSL* ssl, const char* szBuf, int iBufLen )

send data with SSL protocol.

This function is wrapper function of SSL_write and Until transmit all data, attempt transmission.

Parameters:

ssl - SSL struct
szBuf - buffer for sending
iBufLen - buffer size

Returns:

if success, return sending counf. otherwise return -1.

Author:

Yee Young Han

int RecvSsl( SSL* ssl, char* szBuf, int iBufLen, int iSecond )

receive data with SSL protocol

Parameters:

ssl - SSL struct
szBuf - buffer for receving
iBufLen - size of buffer
iSecond - If data is not received in reception latency time-this time, return reception error.

Returns:

return size of receiving data.

Author:

Yee Young Han

char* GetErrorMessage()

return error message.

Returns:

error message

int EncryptString( char* szUserKey, char* szInput, char* szOutput, int iOutputLen )

encrypt string

Parameters:

szUserKey - [in] password for encryption
szInput - [in] plain text
szOutput - [out] encryption string
iOutputLen - [in] size of szOutput

Returns:

if success, return 0. otherwise return -1.

int DecryptString( char* szUserKey, char* szInput, char* szOutput, int iOutputLen )

decrypt encrytpion string.

Parameters:

szUserKey - [in] password for decryption
szInput - [in] encryption string
szOutput - [out] plain string
iOutputLen - [in] size of szOutput

Returns:

if success, return 0. otherwise return -1.

unsigned char* GetMessageDigest( char* szAlgorithm, char* szBuf, unsigned int iLen, int* iReturnLen )

Return HASH value about inputed string.

String that is returned through this function must release by user.

Parameters:

szAlgorithm - [in] hash algorithm
szBuf - [in] string to convert HASH
iLen - [in] length of szBuf
iReturnLen - [in] length of return string

Returns:

if success, return Hash string. otherwise return NULL.

This class has no child classes.

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