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Add test for ecdsa_read_signature_restartable()

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Test values taken from a random signature as generated in
ecdsa_write_read_random() test function
This commit is contained in:
Manuel Pégourié-Gonnard 2017-04-21 11:04:47 +02:00
parent 32aa4375cc
commit 722e5156fd
4 changed files with 68 additions and 3 deletions
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2
include/mbedtls/ecdsa.h
View File

@ -62,7 +62,7 @@ typedef mbedtls_ecp_keypair mbedtls_ecdsa_context;
*/
typedef struct
{
mbedtls_ecp_restart_ctx rs_ecp; /*!< base context (admin+ecp info) */
mbedtls_ecp_restart_ctx ecp; /*!< base context (admin+ecp info) */
} mbedtls_ecdsa_restart_ctx;
#else /* MBEDTLS_ECP_RESTARTABLE */

4
library/ecdsa.c
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@ -476,7 +476,7 @@ void mbedtls_ecdsa_free( mbedtls_ecdsa_context *ctx )
*/
void mbedtls_ecdsa_restart_init( mbedtls_ecdsa_restart_ctx *ctx )
{
mbedtls_ecp_restart_init( &ctx->rs_ecp );
mbedtls_ecp_restart_init( &ctx->ecp );
}
/*
@ -484,7 +484,7 @@ void mbedtls_ecdsa_restart_init( mbedtls_ecdsa_restart_ctx *ctx )
*/
void mbedtls_ecdsa_restart_free( mbedtls_ecdsa_restart_ctx *ctx )
{
mbedtls_ecp_restart_free( &ctx->rs_ecp );
mbedtls_ecp_restart_free( &ctx->ecp );
}
#endif /* MBEDTLS_ECP_RESTARTABLE */

3
tests/suites/test_suite_ecdsa.data
View File

@ -250,3 +250,6 @@ ECDSA deterministic test vector rfc 6979 p521 sha512
depends_on:MBEDTLS_ECP_DP_SECP521R1_ENABLED:MBEDTLS_SHA512_C
ecdsa_det_test_vectors:MBEDTLS_ECP_DP_SECP521R1:"0FAD06DAA62BA3B25D2FB40133DA757205DE67F5BB0018FEE8C86E1B68C7E75CAA896EB32F1F47C70855836A6D16FCC1466F6D8FBEC67DB89EC0C08B0E996B83538":MBEDTLS_MD_SHA512:"test":"13E99020ABF5CEE7525D16B69B229652AB6BDF2AFFCAEF38773B4B7D08725F10CDB93482FDCC54EDCEE91ECA4166B2A7C6265EF0CE2BD7051B7CEF945BABD47EE6D":"1FBD0013C674AA79CB39849527916CE301C66EA7CE8B80682786AD60F98F7E78A19CA69EFF5C57400E3B3A0AD66CE0978214D13BAF4E9AC60752F7B155E2DE4DCE3"
ECDSA restartable read-verify: restart disabled
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
ecdsa_read_restart:MBEDTLS_ECP_DP_SECP256R1:"04e8f573412a810c5f81ecd2d251bb94387e72f28af70dced90ebe75725c97a6428231069c2b1ef78509a22c59044319f6ed3cb750dfe64c2a282b35967a458ad6":"dee9d4d8b0e40a034602d6e638197998060f6e9f353ae1d10c94cd56476d3c92":"304502210098a5a1392abe29e4b0a4da3fefe9af0f8c32e5b839ab52ba6a05da9c3b7edd0f0220596f0e195ae1e58c1e53e9e7f0f030b274348a8c11232101778d89c4943f5ad2":0:0:0

62
tests/suites/test_suite_ecdsa.function
View File

@ -202,3 +202,65 @@ exit:
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_ECP_RESTARTABLE */
void ecdsa_read_restart( int id, char *k_str, char *h_str, char *s_str,
int max_ops, int min_restart, int max_restart )
{
mbedtls_ecdsa_context ctx;
mbedtls_ecdsa_restart_ctx rs_ctx;
unsigned char hash[64];
unsigned char sig[200];
unsigned char pk[65];
size_t sig_len, hash_len, pk_len;
int ret, cnt_restart;
mbedtls_ecdsa_init( &ctx );
mbedtls_ecdsa_restart_init( &rs_ctx );
hash_len = unhexify(hash, h_str);
sig_len = unhexify(sig, s_str);
pk_len = unhexify(pk, k_str);
TEST_ASSERT( mbedtls_ecp_group_load( &ctx.grp, id ) == 0 );
TEST_ASSERT( mbedtls_ecp_point_read_binary( &ctx.grp, &ctx.Q, pk, pk_len ) == 0 );
mbedtls_ecp_set_max_ops( max_ops );
cnt_restart = 0;
do {
ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
hash, hash_len, sig, sig_len, &rs_ctx );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS && ++cnt_restart );
TEST_ASSERT( ret == 0 );
TEST_ASSERT( cnt_restart >= min_restart );
TEST_ASSERT( cnt_restart <= max_restart );
/* try modifying r */
sig[10]++;
do {
ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
hash, hash_len, sig, sig_len, &rs_ctx );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
TEST_ASSERT( ret == MBEDTLS_ERR_ECP_VERIFY_FAILED );
sig[10]--;
/* try modifying s */
sig[sig_len - 1]++;
do {
ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
hash, hash_len, sig, sig_len, &rs_ctx );
} while( ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
TEST_ASSERT( ret == MBEDTLS_ERR_ECP_VERIFY_FAILED );
sig[sig_len - 1]--;
/* do we leak memory when aborting? */
ret = mbedtls_ecdsa_read_signature_restartable( &ctx,
hash, hash_len, sig, sig_len, &rs_ctx );
TEST_ASSERT( ret == 0 || ret == MBEDTLS_ERR_ECP_IN_PROGRESS );
exit:
mbedtls_ecdsa_free( &ctx );
mbedtls_ecdsa_restart_free( &rs_ctx );
}
/* END_CASE */