Commit 0b5cfe32 authored by Ulf Möller's avatar Ulf Möller
Browse files

Use comment from md_rand.c in rand.pod

parent cc8709a0

crypto/rand/md_rand.c

+1 −1
Original line number Diff line number Diff line
@@ -188,7 +188,7 @@ static void ssleay_rand_add(const void *buf, int num, int add) 
	 *

	 * The input is chopped up into units of 16 bytes (or less for

	 * the last block).  Each of these blocks is run through the hash

	 * function as follow:  The data passed to the hash function

	 * function as follows:  The data passed to the hash function

	 * is the current 'md', the same number of bytes from the 'state'

	 * (the location determined by in incremented looping index) as

	 * the current 'block', the new key data 'block', and 'count'

doc/crypto/rand.pod

+10 −7
Original line number Diff line number Diff line
@@ -106,13 +106,16 @@ working hash function ('md') and a counter ('count'). 
Whenever seed data is added, it is inserted into the 'state' as

follows.



The input is chopped up into units of 16 bytes (or less for the last

block).  Each of these blocks is run through the hash function.  The

data passed to the hash function is the current 'md', the same number

of bytes from the 'state' (the location determined by in incremented

looping index) as the current 'block' and the new key data 'block'.

The result of this is kept in 'md' and also xored into the 'state' at

the same locations that were used as input into the hash function.  I

The input is chopped up into units of 16 bytes (or less for

the last block).  Each of these blocks is run through the hash

function as follows:  The data passed to the hash function

is the current 'md', the same number of bytes from the 'state'

(the location determined by in incremented looping index) as

the current 'block', the new key data 'block', and 'count'

(which is incremented after each use).

The result of this is kept in 'md' and also xored into the

'state' at the same locations that were used as input into the

hash function. I

believe this system addresses points 1 (hash function; currently

SHA-1), 3 (the 'state'), 4 (via the 'md'), 5 (by the use of a hash

function and xor).