diff options
Diffstat (limited to 'regress/unittests/sshbuf/test_sshbuf_getput_crypto.c')
| -rw-r--r-- | regress/unittests/sshbuf/test_sshbuf_getput_crypto.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/regress/unittests/sshbuf/test_sshbuf_getput_crypto.c b/regress/unittests/sshbuf/test_sshbuf_getput_crypto.c new file mode 100644 index 0000000..e3620e9 --- /dev/null +++ b/regress/unittests/sshbuf/test_sshbuf_getput_crypto.c @@ -0,0 +1,280 @@ +/* $OpenBSD: test_sshbuf_getput_crypto.c,v 1.3 2021/12/14 21:25:27 deraadt Exp $ */ +/* + * Regress test for sshbuf.h buffer API + * + * Placed in the public domain + */ + +#include "includes.h" + +#ifdef WITH_OPENSSL + +#include <sys/types.h> +#include <stdio.h> +#ifdef HAVE_STDINT_H +# include <stdint.h> +#endif +#include <stdlib.h> +#include <string.h> + +#include <openssl/bn.h> +#include <openssl/objects.h> +#ifdef OPENSSL_HAS_NISTP256 +# include <openssl/ec.h> +#endif + +#include "../test_helper/test_helper.h" +#include "ssherr.h" +#include "sshbuf.h" + +void sshbuf_getput_crypto_tests(void); + +void +sshbuf_getput_crypto_tests(void) +{ + struct sshbuf *p1; + BIGNUM *bn, *bn2; + const char *hexbn1 = "0102030405060708090a0b0c0d0e0f10"; + /* This one has MSB set to test bignum2 encoding negative-avoidance */ + const char *hexbn2 = "f0e0d0c0b0a0908070605040302010007fff11"; + u_char expbn1[] = { + 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, + 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, + }; + u_char expbn2[] = { + 0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80, + 0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00, + 0x7f, 0xff, 0x11 + }; +#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256) + const u_char *d; + size_t s; + BIGNUM *bn_x, *bn_y; + int ec256_nid = NID_X9_62_prime256v1; + char *ec256_x = "0C828004839D0106AA59575216191357" + "34B451459DADB586677EF9DF55784999"; + char *ec256_y = "4D196B50F0B4E94B3C73E3A9D4CD9DF2" + "C8F9A35E42BDD047550F69D80EC23CD4"; + u_char expec256[] = { + 0x04, + 0x0c, 0x82, 0x80, 0x04, 0x83, 0x9d, 0x01, 0x06, + 0xaa, 0x59, 0x57, 0x52, 0x16, 0x19, 0x13, 0x57, + 0x34, 0xb4, 0x51, 0x45, 0x9d, 0xad, 0xb5, 0x86, + 0x67, 0x7e, 0xf9, 0xdf, 0x55, 0x78, 0x49, 0x99, + 0x4d, 0x19, 0x6b, 0x50, 0xf0, 0xb4, 0xe9, 0x4b, + 0x3c, 0x73, 0xe3, 0xa9, 0xd4, 0xcd, 0x9d, 0xf2, + 0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47, + 0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4 + }; + EC_KEY *eck; + EC_POINT *ecp; +#endif + int r; + +#define MKBN(b, bnn) \ + do { \ + bnn = NULL; \ + ASSERT_INT_GT(BN_hex2bn(&bnn, b), 0); \ + } while (0) + + TEST_START("sshbuf_put_bignum2"); + MKBN(hexbn1, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 4); + ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn)); + ASSERT_MEM_EQ(sshbuf_ptr(p1) + 4, expbn1, sizeof(expbn1)); + BN_free(bn); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_put_bignum2 limited"); + MKBN(hexbn1, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 3), 0); + r = sshbuf_put_bignum2(p1, bn); + ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0); + BN_free(bn); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_put_bignum2 bn2"); + MKBN(hexbn2, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4 + 1); /* MSB */ + ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn) + 1); + ASSERT_U8_EQ(*(sshbuf_ptr(p1) + 4), 0x00); + ASSERT_MEM_EQ(sshbuf_ptr(p1) + 5, expbn2, sizeof(expbn2)); + BN_free(bn); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_put_bignum2 bn2 limited"); + MKBN(hexbn2, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn2) + 3), 0); + r = sshbuf_put_bignum2(p1, bn); + ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0); + BN_free(bn); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_get_bignum2"); + MKBN(hexbn1, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0); + ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + sizeof(expbn1)); + ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0); + bn2 = NULL; + ASSERT_INT_EQ(sshbuf_get_bignum2(p1, &bn2), 0); + ASSERT_BIGNUM_EQ(bn, bn2); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2); + BN_free(bn); + BN_free(bn2); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_get_bignum2 truncated"); + MKBN(hexbn1, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0); + ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0); + bn2 = NULL; + r = sshbuf_get_bignum2(p1, &bn2); + ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 3); + BN_free(bn); + BN_free(bn2); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_get_bignum2 giant"); + MKBN(hexbn1, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_u32(p1, 65536), 0); + ASSERT_INT_EQ(sshbuf_reserve(p1, 65536, NULL), 0); + bn2 = NULL; + r = sshbuf_get_bignum2(p1, &bn2); + ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 65536 + 4); + BN_free(bn); + BN_free(bn2); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_get_bignum2 bn2"); + MKBN(hexbn2, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0); /* MSB */ + ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0); + ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + 1 + sizeof(expbn2)); + ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0); + bn2 = NULL; + ASSERT_INT_EQ(sshbuf_get_bignum2(p1, &bn2), 0); + ASSERT_BIGNUM_EQ(bn, bn2); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2); + BN_free(bn); + BN_free(bn2); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_get_bignum2 bn2 truncated"); + MKBN(hexbn2, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0); + ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0); + ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0); + bn2 = NULL; + r = sshbuf_get_bignum2(p1, &bn2); + ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 1 + 4 - 1); + BN_free(bn); + BN_free(bn2); + sshbuf_free(p1); + TEST_DONE(); + + TEST_START("sshbuf_get_bignum2 bn2 negative"); + MKBN(hexbn2, bn); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0); + ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0); + bn2 = NULL; + r = sshbuf_get_bignum2(p1, &bn2); + ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_IS_NEGATIVE); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4); + BN_free(bn); + BN_free(bn2); + sshbuf_free(p1); + TEST_DONE(); + +#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256) + TEST_START("sshbuf_put_ec"); + eck = EC_KEY_new_by_curve_name(ec256_nid); + ASSERT_PTR_NE(eck, NULL); + ecp = EC_POINT_new(EC_KEY_get0_group(eck)); + ASSERT_PTR_NE(ecp, NULL); + MKBN(ec256_x, bn_x); + MKBN(ec256_y, bn_y); + ASSERT_INT_EQ(EC_POINT_set_affine_coordinates_GFp( + EC_KEY_get0_group(eck), ecp, bn_x, bn_y, NULL), 1); + ASSERT_INT_EQ(EC_KEY_set_public_key(eck, ecp), 1); + BN_free(bn_x); + BN_free(bn_y); + EC_POINT_free(ecp); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_eckey(p1, eck), 0); + ASSERT_INT_EQ(sshbuf_get_string_direct(p1, &d, &s), 0); + ASSERT_SIZE_T_EQ(s, sizeof(expec256)); + ASSERT_MEM_EQ(d, expec256, sizeof(expec256)); + sshbuf_free(p1); + EC_KEY_free(eck); + TEST_DONE(); + + TEST_START("sshbuf_get_ec"); + eck = EC_KEY_new_by_curve_name(ec256_nid); + ASSERT_PTR_NE(eck, NULL); + p1 = sshbuf_new(); + ASSERT_PTR_NE(p1, NULL); + ASSERT_INT_EQ(sshbuf_put_string(p1, expec256, sizeof(expec256)), 0); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expec256) + 4); + ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0); + ASSERT_INT_EQ(sshbuf_get_eckey(p1, eck), 0); + bn_x = BN_new(); + bn_y = BN_new(); + ASSERT_PTR_NE(bn_x, NULL); + ASSERT_PTR_NE(bn_y, NULL); + ASSERT_INT_EQ(EC_POINT_get_affine_coordinates_GFp( + EC_KEY_get0_group(eck), EC_KEY_get0_public_key(eck), + bn_x, bn_y, NULL), 1); + MKBN(ec256_x, bn); + MKBN(ec256_y, bn2); + ASSERT_INT_EQ(BN_cmp(bn_x, bn), 0); + ASSERT_INT_EQ(BN_cmp(bn_y, bn2), 0); + ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1); + sshbuf_free(p1); + EC_KEY_free(eck); + BN_free(bn_x); + BN_free(bn_y); + BN_free(bn); + BN_free(bn2); + TEST_DONE(); +#endif +} + +#endif /* WITH_OPENSSL */ |