/usr/bin/avos:MPK load key()

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Description

Reads a key from flash memory at offset 0x10000 + offset and write it to dest.

The Code

int MPK_load_key(char *dest, int offset)
{
	struct {
		int addr;	// -0x18
		int size;	// -0x14
		int buf;	// -0x10
	} argp;
	int read_count;		// -0x0C
	int read_ok;		// -0x08
 
	read_ok = 0;
 
	argp.size = 144; // size to read
	argp.buf = dest; // destination buffer
	argp.addr = 0x10000 + offset; // address to read from
 
	read_count = 0;
 
	while(read_count <= 1) {
 
		if(read_ok != 0)
			break;
 
		if(FLASH_Init() == 0) {
			if(FLASH_Read(&argp)) {
 
				read_ok = MPK_check(dest);
				FLASH_Exit();
				read_count++;
 
				continue;
			}
		}
 
		FLASH_Exit();
	}
 
	if(read_ok == 0)
		return -1;
 
	return 0;
}