lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite for Android: free password hash cracker in your pocket
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Thu, 27 Aug 2015 09:33:35 -0700
From: Bill Cox <waywardgeek@...il.com>
To: "discussions@...sword-hashing.net" <discussions@...sword-hashing.net>
Subject: Argon2 using memset still

g++ has a habit of optimizing calls to memset away.  I doubt that Argon2
succeed in it's attempts to clear memory.  I copied this function from
Blake2:

/* prevents compiler optimizing out memset() */
static inline void secure_zero_memory( void *v, size_t n )
{
  volatile uint8_t *p = ( volatile uint8_t * )v;
  while( n-- ) *p++ = 0;
}


Bill

Content of type "text/html" skipped

Powered by blists - more mailing lists