From f50c7763856641d88f9a9c2757964a0433b82f42 Mon Sep 17 00:00:00 2001 From: Vitaly Chikunov Date: Mon, 23 Jul 2018 03:41:37 +0300 Subject: [PATCH] test_grasshopper: Test OFB after it's fixed (cherry picked from commit ee15414bf118b8e3370ec8b5f0c4ff74eea9b31f) --- test_grasshopper.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/test_grasshopper.c b/test_grasshopper.c index cb27895..434586f 100644 --- a/test_grasshopper.c +++ b/test_grasshopper.c @@ -223,14 +223,18 @@ int main(int argc, char **argv) ret |= test_block(cipher_gost_grasshopper_ctr(), "ctr", E_CTR); ret |= test_block(cipher_gost_grasshopper_ctr(), "ctr iv2", E_CTR_IV2); ret |= test_stream(cipher_gost_grasshopper_ctr(), "ctr", E_CTR); - ret |= test_block(cipher_gost_grasshopper_ofb(), "ofb", E_OFB); /* * Other modes (ofb, cbc, cfb) is impossible to test to match GOST R - * 34.13-2015 test vectors due to these vectors having exceeding IV - * length value (m) = 256 bits, while openssl have hardcoded limit + * 34.13-2015 test vectors exactly, due to these vectors having exceeding + * IV length value (m) = 256 bits, while openssl have hard-coded limit * of maximum IV length of 128 bits (EVP_MAX_IV_LENGTH). * Also, current grasshopper code having fixed IV length of 128 bits. + * + * Thus, new test vectors are generated with truncated 128-bit IV using + * canonical GOST implementation from TC26. */ + ret |= test_block(cipher_gost_grasshopper_ofb(), "ofb", E_OFB); + ret |= test_stream(cipher_gost_grasshopper_ctr(), "ofb", E_CTR); ret |= test_omac(); -- 2.39.2