Encryption between C and C#

Question

Can anyone help me for writing the program of encryption and decryption in C and C#. I want same result after encrypt in C and decrypt in C#.

rajat kumar · Answer

Try the code- C : #include #include static char encoding_table [] = { 'A' , 'B' , 'C' , 'D' , 'E' , 'F' , 'G' , 'H' , 'I' , 'J' , 'K' , 'L' , 'M' , 'N' , 'O' , 'P' , 'Q' , 'R' , 'S' , 'T' , 'U' , 'V' , 'W' , 'X' , 'Y' , 'Z' , 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' , '0' , '1' , '2' , '3' , '4' , '5' , '6' , '7' , '8' , '9' , '+' , '/' }; static char * decoding_table = NULL ; static int mod_table [] = { 0 , 2 , 1 }; char * base64_encode ( const unsigned char * data , size_t input_length , size_t * output_length ) { * output_length = 4 * (( input_length + 2 ) / 3 ); char * encoded_data = malloc (* output_length ); if ( encoded_data == NULL ) return NULL ; for ( int i = 0 , j = 0 ; i input_length ;) { uint32_t octet_a = i input_length ? ( unsigned char ) data [ i ++] : 0 ; uint32_t octet_b = i input_length ? ( unsigned char ) data [ i ++] : 0 ; uint32_t octet_c = i input_length ? ( unsigned char ) data [ i ++] : 0 ; uint32_t triple = ( octet_a 0x10 ) + ( octet_b 0x08 ) + octet_c ; encoded_data [ j ++] = encoding_table [( triple >> 3 * 6 ) & 0x3F ]; encoded_data [ j ++] = encoding_table [( triple >> 2 * 6 ) & 0x3F ]; encoded_data [ j ++] = encoding_table [( triple >> 1 * 6 ) & 0x3F ]; encoded_data [ j ++] = encoding_table [( triple >> 0 * 6 ) & 0x3F ]; } for ( int i = 0 ; i mod_table [ input_length % 3 ]; i ++) encoded_data [* output_length - 1 - i ] = '=' ; return encoded_data ; } and decrypt in C#: byte [] data = Convert . FromBase64String ( encodedString ); string decodedString = Encoding . UTF8 . GetString ( data ); Hope this will help you.

Encryption between C and C#

Answers (1)