1 //***************************************************************************** 2 //@File Name    : scsaes.h: the interface of crypto++ library 3 //@Version        : V1.0.0 4 //@Author        : xiaoc 5 //@Date            : 2014/11/11 6 //***************************************************************************** 7  8 #ifndef __CSCSAES_H__ 9 #define __CSCSAES_H__10 11 #include <cryptopp/aes.h>12 #include <string>13 14 typedef unsigned char BYTE15 16 //@Description17 //This class encapsulate the aes library‘s encryption method and decryption method.18 class CSCSAes19 {20 public:21     CSCSAes();22     virtual ~CSCSAes();23 24 public:25     // encrypt plainText26     std::string Encrypt(const std::string &strText);27     // decrypt plainText28     std::string Decrypt(const std::string &strText);29     30     void SetKey(byte *p_byteKey, byte *p_byteIv, int nKeyLen);31 private:32     byte *m_pByteKey;33     byte *m_pByteIv;34     int m_nKeyLen;35 };36 37 //@Usage Start38 //unsigned char key[] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08, 0x01,0x02, 0x03,0x04,0x05,0x06,0x07,0x08};//AES::DEFAULT_KEYLENGTH  39 //unsigned char iv[]  = {0x01,0x02,0x03,0x03,0x03,0x03,0x03,0x03, 0x03,0x03, 0x01,0x02,0x03,0x03,0x03,0x03};40 //int keysize = 16; 41 //CSCSAes aes;42 //aes.SetKey(key, iv, keysize); 43 //string strCipher = aes.Encrypt(strText);44 //string strText = aes.Encrypt(strCipher);45 //@Usage End46 47 #endif // __CSCSAES_H__

 1 CSCSAes::CSCSAes(string strKey, string strIv) 2 { 3     SetKey(strKey, strIv); 4 } 5  6 CSCSAes::~CSCSAes() 7 { 8      9 }10 11 void CSCSAes::SetKey(byte *p_byteKey, byte *p_byteIv, int nKeyLen)12 {13     m_pByteKey = p_byteKey;14     m_pByteIv = p_byteIv;15     m_nKeyLen = nKeyLen;16 }17 18 // 加密19 std::string CSCSAes::Encrypt(const std::string &strText)20 {21     string strCipher;22     CBC_Mode<AES>::Encryption aesEncryptor(m_pByteKey, m_nKeyLen, m_pByteIv);23     StringSource(strText, true, new StreamTransformationFilter(aesEncryptor, new StringSink(strCipher)));24     25     return strCipher;26 }27 28 // 解密29 std::string CSCSAes::Decrypt(const std::string &strCipher)30 {31     string strText;32     CBC_Mode<AES>::Decryption aesEncryptor(m_pByteKey, m_nKeyLen, m_pByteIv);33     StringSource(strCipher, true, new StreamTransformationFilter(aesEncryptor, new StringSink(strText)));34     35     return strText;36 }