Am Freitag, 4. Juli 2014, 11:12:35 schrieb Herbert Xu: Hi Herbert, > On Tue, Jul 01, 2014 at 05:08:48PM +0200, Stephan Mueller wrote: > > For the CTR DRBG, the drbg_state->scratchpad temp buffer (i.e. the > > memory location immediately before the drbg_state->tfm variable > > is the buffer that the BCC function operates on. BCC operates > > blockwise. Making the temp buffer drbg_statelen(drbg) in size is > > sufficient when the DRBG state length is a multiple of the block > > size. For AES192 this is not the case and the length for temp is > > insufficient (yes, that also means for such ciphers, the final > > output of all BCC rounds are truncated before used to update the > > state of the DRBG!!). > > > > The patch enlarges the temp buffer from drbg_statelen to > > drbg_statelen + drbg_blocklen to have sufficient space. > > > > Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx> > > Signed-off-by: Stephan Mueller <smueller@xxxxxxxxxx> > > BTW your patches were all corrupted by your mailer so I had to > fix them by hand. Please check the cryptodev tree to ensure > that my fixes are correct. The patch fixing the memory corruption is completely and correctly applied. Apologies for sending broken patches. If I shall resend them corrected, please let me know. > > In future please test your patches by applying your own patches > returned via the list. I will do that. -- Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
