From d40efde88e6c6589d9d4f5128ec92178776c518a Mon Sep 17 00:00:00 2001 From: Vitaly Chikunov Date: Mon, 23 Jul 2018 02:25:08 +0300 Subject: [PATCH] test_grasshopper: ctr test 2 and ofb with truncated iv tests Full test of OFB to match GOST R 34.13-2015 test vectors is impossible, due to test IVs are having size (256-bits) over the maximum openssl can allow (128-bits). I generated new test vectors from canonical implementation from `PR_GOSTR_bch_v9.zip` (revision of 2016-10-28) by truncating test IVs in half. --- test_grasshopper.c | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/test_grasshopper.c b/test_grasshopper.c index 3385be5..cb27895 100644 --- a/test_grasshopper.c +++ b/test_grasshopper.c @@ -32,7 +32,9 @@ enum e_mode { E_ECB = 0, - E_CTR + E_CTR, + E_CTR_IV2, + E_OFB, }; /* Test key from both GOST R 34.12-2015 and GOST R 34.13-2015. */ @@ -63,9 +65,25 @@ static const unsigned char E[4][sizeof(P)] = { 0xa5,0xea,0xe8,0x8b,0xe6,0x35,0x6e,0xd3,0xd5,0xe8,0x77,0xf1,0x35,0x64,0xa3,0xa5, 0xcb,0x91,0xfa,0xb1,0xf2,0x0c,0xba,0xb6,0xd1,0xc6,0xd1,0x58,0x20,0xbd,0xba,0x73, }, + { /* CTR test vectors again for IV2 test */ + 0xf1,0x95,0xd8,0xbe,0xc1,0x0e,0xd1,0xdb,0xd5,0x7b,0x5f,0xa2,0x40,0xbd,0xa1,0xb8, + 0x85,0xee,0xe7,0x33,0xf6,0xa1,0x3e,0x5d,0xf3,0x3c,0xe4,0xb3,0x3c,0x45,0xde,0xe4, + 0xa5,0xea,0xe8,0x8b,0xe6,0x35,0x6e,0xd3,0xd5,0xe8,0x77,0xf1,0x35,0x64,0xa3,0xa5, + 0xcb,0x91,0xfa,0xb1,0xf2,0x0c,0xba,0xb6,0xd1,0xc6,0xd1,0x58,0x20,0xbd,0xba,0x73, + }, + { /* OFB test vector generated from canonical implementation */ + 0x81,0x80,0x0a,0x59,0xb1,0x84,0x2b,0x24,0xff,0x1f,0x79,0x5e,0x89,0x7a,0xbd,0x95, + 0x77,0x91,0x46,0xdb,0x2d,0x93,0xa9,0x4e,0xd9,0x3c,0xf6,0x8b,0x32,0x39,0x7f,0x19, + 0xe9,0x3c,0x9e,0x57,0x44,0x1d,0x87,0x05,0x45,0xf2,0x40,0x36,0xa5,0x8c,0xee,0xa3, + 0xcf,0x3f,0x00,0x61,0xd5,0x64,0x23,0x54,0x5b,0x96,0x0d,0x86,0x4c,0xc8,0x68,0xda, + } }; -static const unsigned char iv_ctr[] = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; -static const unsigned char *iv[4] = { NULL, iv_ctr, }; +static const unsigned char iv_ctr[] = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0 }; +/* right [8] part of IV should be ignored by ctr */ +static const unsigned char iv_ctr_iv2[] = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff }; +/* truncated to 128-bits IV */ +static const unsigned char iv_ofb_t[] = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0,0xa1,0xb2,0xc3,0xd4,0xe5,0xf0,0x01,0x12 }; +static const unsigned char *iv[4] = { NULL, iv_ctr, iv_ctr_iv2, iv_ofb_t }; static void hexdump(const void *ptr, size_t len) { @@ -203,7 +221,9 @@ int main(int argc, char **argv) ret |= test_block(cipher_gost_grasshopper_ecb(), "ecb", E_ECB); 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 -- 2.39.2