• BLS <nanali nospam.wanadoo.fr> Dec 15 2008
• "Denis Koroskin" <2korden gmail.com> Dec 15 2008
• BLS <nanali nospam.wanadoo.fr> Dec 15 2008

BLS <nanali nospam.wanadoo.fr> writes:

Hi, what is the correct way to translate this snippet into _D2_ ?
//const and cast()

void rc2_decrypt( const unsigned short xkey[64],
                   unsigned char *plain,
                   const unsigned char *cipher )
         {
         unsigned x76, x54, x32, x10, i;

         x76 = (cipher[7] << 8) + cipher[6];
.........

many TIA, Bjoern

"Denis Koroskin" <2korden gmail.com> writes:

On Mon, 15 Dec 2008 20:11:44 +0300, BLS <nanali nospam.wanadoo.fr> wrote:

 Hi, what is the correct way to translate this snippet into _D2_ ?
 //const and cast()

 void rc2_decrypt( const unsigned short xkey[64],
                    unsigned char *plain,
                    const unsigned char *cipher )
          {
          unsigned x76, x54, x32, x10, i;

          x76 = (cipher[7] << 8) + cipher[6];
 .........

 many TIA, Bjoern


Here you go:

void rc2_decrypt( const(ushort)[64] xkey, ubyte* plain, const(ubyte)*  
cipher )
{
     uint x76, x54, x32, x10, i;
     x76 = (cipher[7] << 8) + cipher[6];
     // .....
}

You'd better pass cipher and plain as arrays rather than pointers if their  
sizes are known:

void rc2_decrypt( const(ushort)[64] xkey, const(ubyte)[] plain,  
const(ubyte)[] cipher )
{
     uint x76, x54, x32, x10, i;
     x76 = (cipher[7] << 8) + cipher[6];
     // .....
}

BLS <nanali nospam.wanadoo.fr> writes:

Denis Koroskin schrieb:
 On Mon, 15 Dec 2008 20:11:44 +0300, BLS <nanali nospam.wanadoo.fr> wrote:
 
 Hi, what is the correct way to translate this snippet into _D2_ ?
 //const and cast()

 void rc2_decrypt( const unsigned short xkey[64],
                    unsigned char *plain,
                    const unsigned char *cipher )
          {
          unsigned x76, x54, x32, x10, i;

          x76 = (cipher[7] << 8) + cipher[6];
 .........

 many TIA, Bjoern


 Here you go:
 
 void rc2_decrypt( const(ushort)[64] xkey, ubyte* plain, const(ubyte)* 
 cipher )
 {
     uint x76, x54, x32, x10, i;
     x76 = (cipher[7] << 8) + cipher[6];
     // .....
 }
 
 You'd better pass cipher and plain as arrays rather than pointers if 
 their sizes are known:
 
 void rc2_decrypt( const(ushort)[64] xkey, const(ubyte)[] plain, 
 const(ubyte)[] cipher )
 {
     uint x76, x54, x32, x10, i;
     x76 = (cipher[7] << 8) + cipher[6];
     // .....
 }


I am afraid I am not able to use arrays 'cause I've to use the function 
as follows :
export extern(Windows) void rc2_decrypt() in order to use it from my 4GL 
development-system.

beside, any reason for const(ubyte)[] plain instead of ubyte[] plain ?
Bjoern