REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1089
* From OpenSSL_1_1_0i(97c0959f27b294fe1eb10b547145ebef2524b896) to
OpenSSL_1_1_1b(50eaac9f3337667259de725451f201e784599687), OpenSSL
updated DRBG / RAND to request nonce and additional low entropy
randomness from system(line 229 openssl/CHANGES).
Since OpenSSL_1_1_1b doesn't fully implement rand pool functions
for UEFI. We must provide a method to implenet these method.
TSC is used as first entropy source if it's availabe otherwise
fallback to TimerLib. But we are not sure the amount of randomness
they provide. If you really care about the security, one choice is
overrided it with hardware generator.
Add rand_pool.c to implement these functions required by OpenSSL
rand_pool_acquire_entropy
rand_pool_add_nonce_data
rand_pool_add_additional_data
rand_pool_init
rand_pool_cleanup
rand_pool_keep_random_devices_open
And add rand_pool_noise.* for getting entropy noise from different
architecture.
* We don't need ossl_store functions. We exclude relative files
through process_files.pl. And ossl_store_cleanup_int was first
added in crypto/init.c OpenSSL_1_1_1(71a5516d).
So add a new file(ossl_store.c) to implement ossl_store_cleanup_int
function.
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Ting Ye <ting.ye@intel.com>
Signed-off-by: Xiaoyu Lu <xiaoyux.lu@intel.com>
Tested-by: Gary Lin <glin@suse.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
XiaoyuX Lu