Re: [PATCH] b43: Enable quantum cryptography support

[Ivo van Doorn <ivdoorn@gmail.com>]

On Tuesday 01 April 2008, Mark Hagger wrote:
> Excellent, did you manage to implement the time travel support mode as
> well?

Most likely not, that only works on Ralink hardware, and rt2x00 will
support that with the 2.2.0 release.

Ivo

> On Tue, 2008-04-01 at 16:13 +0200, Michael Buesch wrote:
> > This patch enables support for quantum cryptography on latest b43 devices.
> > The quantum cryptography algorithm is 100% backward compatible with the
> > standard CCMP algorithm, so no additional changes to the mac80211 stack
> > are needed. While staying compatible, it makes the unbreakable(!) WLAN connection
> > possible. Of course, that's only the case, if both ends use b43-qcrypto.
> > In the case where one STA uses legacy encryption, the card will automatically
> > detect this and switch back to plain old CCMP.
> > 
> > Signed-off-by: Michael Buesch <mb@bu3sch.de>
> > 
> > ---
> > 
> > John, please queue this patch for linux-3.6.26
> > 
> > 
> > Index: wireless-testing/drivers/net/wireless/b43/b43.h
> > ===================================================================
> > --- wireless-testing.orig/drivers/net/wireless/b43/b43.h	2008-03-22 15:44:00.000000000 +0100
> > +++ wireless-testing/drivers/net/wireless/b43/b43.h	2008-04-01 15:53:40.000000000 +0200
> > @@ -270,6 +270,7 @@ enum {
> >  #define B43_HF_ANTSELMODE	0x000200000000ULL /* Antenna selection mode (rev >= 13 only) */
> >  #define B43_HF_MLADVW		0x001000000000ULL /* N PHY ML ADV workaround (rev >= 13 only) */
> >  #define B43_HF_PR45960W		0x080000000000ULL /* PR 45960 workaround (rev >= 13 only) */
> > +#define B43_HF_QUANTUMCRYPT	0x100000000000ULL /* Enable quantum cryptography in firmware. */
> >  
> >  /* MacFilter offsets. */
> >  #define B43_MACFILTER_SELF		0x0000
> > @@ -439,6 +440,7 @@ enum {
> >  	B43_SEC_ALGO_AES,
> >  	B43_SEC_ALGO_WEP104,
> >  	B43_SEC_ALGO_AES_LEGACY,
> > +	B43_SEC_ALGO_QUANTUM,
> >  };
> >  
> >  struct b43_dmaring;
> > Index: wireless-testing/drivers/net/wireless/b43/main.c
> > ===================================================================
> > --- wireless-testing.orig/drivers/net/wireless/b43/main.c	2008-03-27 17:11:38.000000000 +0100
> > +++ wireless-testing/drivers/net/wireless/b43/main.c	2008-04-01 15:53:41.000000000 +0200
> > @@ -3215,6 +3215,13 @@ static int b43_op_set_key(struct ieee802
> >  		break;
> >  	case ALG_CCMP:
> >  		algorithm = B43_SEC_ALGO_AES;
> > +		if (dev->dev->id.revision >= 20080401) {
> > +			/* Latest devices can do quantum cryptography
> > +			 * to encrypt/decrypt the data stream.
> > +			 * This is 100% backward compatible with the traditional
> > +			 * CCMP algorithm. */
> > +			algorithm = B43_SEC_ALGO_QUANTUM;
> > +		}
> >  		break;
> >  	default:
> >  		B43_WARN_ON(1);
> > @@ -3254,6 +3261,10 @@ static int b43_op_set_key(struct ieee802
> >  			b43_hf_write(dev,
> >  				     b43_hf_read(dev) & ~B43_HF_USEDEFKEYS);
> >  		}
> > +		if (algorithm == B43_SEC_ALGO_QUANTUM) {
> > +			b43_hf_write(dev, b43_hf_read(dev)
> > +				     | B43_HF_QUANTUMCRYPT);
> > +		}
> >  		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
> >  		break;
> >  	case DISABLE_KEY: {
> > 
> 
> 
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