3 ms·
That "54 55 52 4E" jumped right out to my eye as the uppercase alphabet. Knowing that numbers start at 0x30, uppercase letters start at 0x41, and lowercase lett
by EvanAnderson 3y ago
That "54 55 52 4E" jumped right out to my eye as the uppercase alphabet. Knowing that numbers start at 0x30, uppercase letters start at 0x41, and lowercase letters start at 0x61 makes alphanumeric patterns in hex dumps easy to spot.
That knowledge is good for short strings, but the canonical hexdump format is a the best way to look at packet and memory dumps.
- deleted 3y ago[deleted]
- fl7305 3y ago> uppercase letters start at 0x41, and lowercase letters start at 0x61 And the reason for the 0x20 difference is that the Shift key on old teletypes turned the 0x20 bit on and off. In the same way the Control key turned the 0x40 bit off. So Ctrl-A = 0x01 = 'A'/0x41 - 0x40.