On Tue, Aug 26, 2014 at 10:29:45AM +0200, Stephan Mueller wrote: > The maximum values for additional input string or generated blocks is > larger than 1<<32. To ensure a sensible value on 32 bit systems, return > SIZE_MAX on 32 bit systems. This value is lower than the maximum > allowed values defined in SP800-90A. The standard allow lower maximum > values, but not larger values. > > SIZE_MAX - 1 is used for drbg_max_addtl to allow > drbg_healthcheck_sanity to check the enforcement of the variable > without wrapping. This is really ugly but OK. However, I'm not sure how the sanity check ever worked. It would appear that the drbg_generate call in drbg_healthcheck_sanity should always fail because you explicitly set addtl->len to drbg_max_addtl + 1, which should trigger the "DRBG: additional information string too long" error, no? Obviously it's working for you but I'd like to understand why it's working and whether it'll continue to work. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
