Possible Duplicate: What do the magic numbers 0x5c and 0x36 in the opad/ipad calc in HMAC do? I'm reading the book Network Security Essentials written by William Stallings. in this book,in ...
In the SHA hash algorithm the message is always padded, even if initially the correct length without padding; the padding is of the form "1" followed by the necessary number of 0s. Why is it ...