Add make test and test_grasshopper

test_grasshopper: test modes to match GOST vectors
Only ECB and CTR modes are tested. OBF, CBC, CFB modes is not testable
under openssl.

(cherry picked from commit 6547c44e46129c1d9d32760fa37a1a81fa085231)

2 files changed, 148 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bf4849b..51eb221 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,6 +102,11 @@ add_test(NAME engine
 	 COMMAND perl run_tests
 	 WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/test)
 
+add_executable(test_grasshopper test_grasshopper.c)
+target_link_libraries(test_grasshopper gost_engine gost ${OPENSSL_CRYPTO_LIBRARY})
+add_test(NAME grasshopper
+	COMMAND test_grasshopper)
+
 add_library(gost STATIC ${GOST_LIB_SOURCE_FILES})
 set_target_properties(gost PROPERTIES POSITION_INDEPENDENT_CODE ON)
 
diff --git a/test_grasshopper.c b/test_grasshopper.c
new file mode 100644
index 0000000..772afa9
--- /dev/null
+++ b/test_grasshopper.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2018 vt@altlinux.org. All Rights Reserved.
+ *
+ * Contents licensed under the terms of the OpenSSL license
+ * See https://www.openssl.org/source/license.html for details
+ */
+
+#include "gost_grasshopper_cipher.h"
+#include "gost_grasshopper_defines.h"
+#include "gost_grasshopper_math.h"
+#include "gost_grasshopper_core.h"
+#include "e_gost_err.h"
+#include <openssl/evp.h>
+#include <openssl/rand.h>
+#include <openssl/err.h>
+#include <openssl/asn1.h>
+#include <string.h>
+
+enum e_mode {
+    E_ECB = 0,
+    E_CTR
+};
+
+static void hexdump(void *ptr, size_t len)
+{
+    unsigned char *p = ptr;
+    size_t i;
+
+    for (i = 0; i < len; i++)
+	printf(" %02x", p[i]);
+    printf("\n");
+}
+
+/* Test vectors from GOST R 34.13-2015 A.1 which* includes vectors
+ * from GOST R 34.12-2015 A.1 as first block of ecb mode */
+static int test_modes(const EVP_CIPHER *type, const char *mode, enum e_mode t)
+{
+    EVP_CIPHER_CTX ctx;
+    unsigned char k[] = {
+	0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,
+	0xfe,0xdc,0xba,0x98,0x76,0x54,0x32,0x10,0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef,
+    };
+    unsigned char p[] = {
+	/* plaintext from GOST R 34.13-2015 A.1 */
+	/* first 16 bytes is vector (a) from GOST R 34.12-2015 A.1 */
+	0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0xff,0xee,0xdd,0xcc,0xbb,0xaa,0x99,0x88,
+	0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,
+	0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,0x00,
+	0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xaa,0xbb,0xcc,0xee,0xff,0x0a,0x00,0x11,
+    };
+    unsigned char e[4][sizeof(p)] = {
+	{ /* ecb test vectors from GOST R 34.13-2015  A.1.1 */
+	    /* first 16 bytes is vector (b) from GOST R 34.12-2015 A.1 */
+	    0x7f,0x67,0x9d,0x90,0xbe,0xbc,0x24,0x30,0x5a,0x46,0x8d,0x42,0xb9,0xd4,0xed,0xcd,
+	    0xb4,0x29,0x91,0x2c,0x6e,0x00,0x32,0xf9,0x28,0x54,0x52,0xd7,0x67,0x18,0xd0,0x8b,
+	    0xf0,0xca,0x33,0x54,0x9d,0x24,0x7c,0xee,0xf3,0xf5,0xa5,0x31,0x3b,0xd4,0xb1,0x57,
+	    0xd0,0xb0,0x9c,0xcd,0xe8,0x30,0xb9,0xeb,0x3a,0x02,0xc4,0xc5,0xaa,0x8a,0xda,0x98,
+	},
+	{ /* ctr test vectors from GOST R 34.13-2015  A.1.2 */
+	    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,
+	},
+    };
+    unsigned char iv_ctr[] = { 0x12,0x34,0x56,0x78,0x90,0xab,0xce,0xf0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
+    unsigned char *iv[4] = { NULL, iv_ctr, };
+    unsigned char c[sizeof(p)];
+    int outlen, tmplen;
+    int ret = 0, test;
+
+    printf("Encryption test from GOST R 34.13-2015 [%s] \n", mode);
+    EVP_CIPHER_CTX_init(&ctx);
+    EVP_CipherInit_ex(&ctx, type, NULL, k, iv[t], 1);
+    EVP_CIPHER_CTX_set_padding(&ctx, 0);
+    EVP_CipherUpdate(&ctx, c, &outlen, p, sizeof(p));
+    EVP_CipherFinal_ex(&ctx, c + outlen, &tmplen);
+    EVP_CIPHER_CTX_cleanup(&ctx);
+    // hexdump(c, outlen);
+
+    test = outlen != sizeof(p) ||
+	memcmp(c, e[t], sizeof(p));
+
+    printf("Test %s\n", test? "FAILED" : "passed");
+    ret |= test;
+
+    if (t == E_CTR) {
+	int i;
+
+	printf("Stream encryption test from GOST R 34.13-2015 [%s] \n", mode);
+	EVP_CIPHER_CTX_init(&ctx);
+	EVP_CipherInit_ex(&ctx, type, NULL, k, iv[t], 1);
+	EVP_CIPHER_CTX_set_padding(&ctx, 0);
+	for (i = 0; i < sizeof(p); i++) {
+	    EVP_CipherUpdate(&ctx, c + i, &outlen, p + i, 1);
+	    OPENSSL_assert(outlen == 1);
+	}
+	outlen = i;
+	EVP_CipherFinal_ex(&ctx, c + outlen, &tmplen);
+	EVP_CIPHER_CTX_cleanup(&ctx);
+
+	test = outlen != sizeof(p) ||
+	    memcmp(c, e[t], sizeof(p));
+
+	printf("Test %s\n", test? "FAILED" : "passed");
+#if 0
+	ret |= test;
+#endif
+    }
+
+    printf("Decryption test from GOST R 34.13-2015 [%s] \n", mode);
+    EVP_CIPHER_CTX_init(&ctx);
+    EVP_CipherInit_ex(&ctx, type, NULL, k, iv[t], 0);
+    EVP_CIPHER_CTX_set_padding(&ctx, 0);
+    EVP_CipherUpdate(&ctx, c, &outlen, e[t], sizeof(p));
+    EVP_CipherFinal_ex(&ctx, c + outlen, &tmplen);
+    EVP_CIPHER_CTX_cleanup(&ctx);
+
+    test = outlen != sizeof(p) ||
+	memcmp(c, p, sizeof(p));
+
+    printf("Test %s\n", test? "FAILED" : "passed");
+    ret |= test;
+
+    return ret;
+}
+
+int main(int argc, char **argv)
+{
+    int ret = 0;
+
+    ret |= test_modes(cipher_gost_grasshopper_ecb(), "ecb", E_ECB);
+    ret |= test_modes(cipher_gost_grasshopper_ctr(), "ctr", E_CTR);
+    /*
+     * 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
+     * of maximum IV length of 128 bits (EVP_MAX_IV_LENGTH).
+     * Also, current grasshopper code having fixed IV length of 128 bits.
+     */
+
+    return ret;
+}