New answers tagged array
0
So I spent a while longer banging my head on the wall, and I finally found a solution to my issue. @DaveNewton provided several links that lead to other links, and I found my way to here where some not-so-common knowledge is explained. It appears that for some reason the FILE_WRITE function is slow, and takes a lot of time to execute.
This can be substituted ...
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#include <DES.h>
DES des;
byte in[8];
String input;
char buf[30];
void setup() {
Serial.begin(9600);
Serial.println("Hello!");
}
void tdesTest() {
byte out[8];
byte key[] = {
0x3b, 0x38, 0x98, 0x37, 0x15, 0x20, 0xf7, 0x5e, // key A
0x92, 0x2f, 0xb5, 0x10, 0xc7, 0x1f, 0x43, 0x6e, // key B
0x3b, 0x38, 0x98, 0x37, 0x15, ...
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From your comments I think I understand what you are after. So, assuming you have read some string into a String object called input and you have an array in[8] to populate you can:
Clear the in[] array to a preset state
Copy the string content into in[]
As code:
memset(in, 0, 8); // Erase the contents of in[]
input.toCharArray((char *)in, 8); // Copy up ...
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