Cisco Systems WVC80N manual Else ifchr3 == char0 enc4 =

Appendix D

CGI Commands

else if(chr3 == (char)0) { enc4 = 64;

}

o_buf[j++] = keyStr[enc1]; o_buf[j++] = keyStr[enc2]; o_buf[j++] = keyStr[enc3]; o_buf[j++] = keyStr[enc4];

//OK, now clean out the variables used. chr1 = chr2 = chr3 = (char)0;

enc1 = enc2 = enc3 = enc4 = (char)0;

}while (i < strlen(i_buf)); //And finish off the loop

//Now return the encoded values. return j;

}

//--------------------------------------------------------------------

//Description: decrypt the input data with the base64

//Input:

//	char i_buf[]	- input buffer
// Output:
//	char o_buf[]	- output buffer
// Return:
//	decrypted string length
//--------------------------------------------------------------------

int decode64(char i_buf[], char o_buf[]) { //These are the 3 bytes to be encoded char chr1 = (char)0;

char chr2 = (char)0; char chr3 = (char)0;

//These are the 4 encoded bytes int enc1 = 0;

int enc2 = 0; int enc3 = 0; int enc4 = 0;

int i = 0, j = 0; //Position counter

do { //Here’s the decode loop.

//Grab 4 bytes of encoded content.

enc1 = (int)(strchr(keyStr, i_buf[i++]) - keyStr);

if(i < strlen(i_buf))

enc2 = (int)(strchr(keyStr, i_buf[i++]) - keyStr); if(i < strlen(i_buf))

enc3 = (int)(strchr(keyStr, i_buf[i++]) - keyStr); if(i < strlen(i_buf))

enc4 = (int)(strchr(keyStr, i_buf[i++]) - keyStr);

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