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ringct: catch errors from ge_frombytes_vartime

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moneromooo-monero 2016-06-24 17:46:24 +01:00
parent 161551e13b
commit 73d59f17e1
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GPG key ID: 686F07454D6CEFC3
1 changed files with 12 additions and 11 deletions
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23
src/ringct/rctOps.cpp
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@ -28,6 +28,7 @@
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "misc_log_ex.h"
#include "rctOps.h" #include "rctOps.h"
using namespace crypto; using namespace crypto;
using namespace std; using namespace std;
@ -216,7 +217,7 @@ namespace rct {
void scalarmultKey(key & aP, const key &P, const key &a) { void scalarmultKey(key & aP, const key &P, const key &a) {
ge_p3 A; ge_p3 A;
ge_p2 R; ge_p2 R;
ge_frombytes_vartime(&A, P.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&A, P.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_scalarmult(&R, a.bytes, &A); ge_scalarmult(&R, a.bytes, &A);
ge_tobytes(aP.bytes, &R); ge_tobytes(aP.bytes, &R);
} }
@ -225,7 +226,7 @@ namespace rct {
key scalarmultKey(const key & P, const key & a) { key scalarmultKey(const key & P, const key & a) {
ge_p3 A; ge_p3 A;
ge_p2 R; ge_p2 R;
ge_frombytes_vartime(&A, P.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&A, P.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_scalarmult(&R, a.bytes, &A); ge_scalarmult(&R, a.bytes, &A);
key aP; key aP;
ge_tobytes(aP.bytes, &R); ge_tobytes(aP.bytes, &R);
@ -238,7 +239,7 @@ namespace rct {
ge_p3 A; ge_p3 A;
ge_p2 R; ge_p2 R;
key Htmp = { {0x8b, 0x65, 0x59, 0x70, 0x15, 0x37, 0x99, 0xaf, 0x2a, 0xea, 0xdc, 0x9f, 0xf1, 0xad, 0xd0, 0xea, 0x6c, 0x72, 0x51, 0xd5, 0x41, 0x54, 0xcf, 0xa9, 0x2c, 0x17, 0x3a, 0x0d, 0xd3, 0x9c, 0x1f, 0x94} }; key Htmp = { {0x8b, 0x65, 0x59, 0x70, 0x15, 0x37, 0x99, 0xaf, 0x2a, 0xea, 0xdc, 0x9f, 0xf1, 0xad, 0xd0, 0xea, 0x6c, 0x72, 0x51, 0xd5, 0x41, 0x54, 0xcf, 0xa9, 0x2c, 0x17, 0x3a, 0x0d, 0xd3, 0x9c, 0x1f, 0x94} };
ge_frombytes_vartime(&A, Htmp.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&A, Htmp.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_scalarmult(&R, a.bytes, &A); ge_scalarmult(&R, a.bytes, &A);
key aP; key aP;
ge_tobytes(aP.bytes, &R); ge_tobytes(aP.bytes, &R);
@ -250,8 +251,8 @@ namespace rct {
//for curve points: AB = A + B //for curve points: AB = A + B
void addKeys(key &AB, const key &A, const key &B) { void addKeys(key &AB, const key &A, const key &B) {
ge_p3 B2, A2; ge_p3 B2, A2;
ge_frombytes_vartime(&B2, B.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&B2, B.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_frombytes_vartime(&A2, A.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&A2, A.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_cached tmp2; ge_cached tmp2;
ge_p3_to_cached(&tmp2, &B2); ge_p3_to_cached(&tmp2, &B2);
ge_p1p1 tmp3; ge_p1p1 tmp3;
@ -273,7 +274,7 @@ namespace rct {
void addKeys2(key &aGbB, const key &a, const key &b, const key & B) { void addKeys2(key &aGbB, const key &a, const key &b, const key & B) {
ge_p2 rv; ge_p2 rv;
ge_p3 B2; ge_p3 B2;
ge_frombytes_vartime(&B2, B.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&B2, B.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_double_scalarmult_base_vartime(&rv, b.bytes, &B2, a.bytes); ge_double_scalarmult_base_vartime(&rv, b.bytes, &B2, a.bytes);
ge_tobytes(aGbB.bytes, &rv); ge_tobytes(aGbB.bytes, &rv);
} }
@ -282,7 +283,7 @@ namespace rct {
// input B a curve point and output a ge_dsmp which has precomputation applied // input B a curve point and output a ge_dsmp which has precomputation applied
void precomp(ge_dsmp rv, const key & B) { void precomp(ge_dsmp rv, const key & B) {
ge_p3 B2; ge_p3 B2;
ge_frombytes_vartime(&B2, B.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&B2, B.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_dsm_precomp(rv, &B2); ge_dsm_precomp(rv, &B2);
} }
@ -292,7 +293,7 @@ namespace rct {
void addKeys3(key &aAbB, const key &a, const key &A, const key &b, const ge_dsmp B) { void addKeys3(key &aAbB, const key &a, const key &A, const key &b, const ge_dsmp B) {
ge_p2 rv; ge_p2 rv;
ge_p3 A2; ge_p3 A2;
ge_frombytes_vartime(&A2, A.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&A2, A.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_double_scalarmult_precomp_vartime(&rv, a.bytes, &A2, b.bytes, B); ge_double_scalarmult_precomp_vartime(&rv, a.bytes, &A2, b.bytes, B);
ge_tobytes(aAbB.bytes, &rv); ge_tobytes(aAbB.bytes, &rv);
} }
@ -302,8 +303,8 @@ namespace rct {
//AB = A - B where A, B are curve points //AB = A - B where A, B are curve points
void subKeys(key & AB, const key &A, const key &B) { void subKeys(key & AB, const key &A, const key &B) {
ge_p3 B2, A2; ge_p3 B2, A2;
ge_frombytes_vartime(&B2, B.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&B2, B.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_frombytes_vartime(&A2, A.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&A2, A.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_cached tmp2; ge_cached tmp2;
ge_p3_to_cached(&tmp2, &B2); ge_p3_to_cached(&tmp2, &B2);
ge_p1p1 tmp3; ge_p1p1 tmp3;
@ -422,7 +423,7 @@ namespace rct {
ge_p2 point; ge_p2 point;
ge_p3 res; ge_p3 res;
key h = cn_fast_hash(hh); key h = cn_fast_hash(hh);
ge_frombytes_vartime(&res, h.bytes); CHECK_AND_ASSERT_THROW_MES(ge_frombytes_vartime(&res, h.bytes) == 0, "ge_frombytes_vartime failed at "+boost::lexical_cast<std::string>(__LINE__));
ge_p3_to_p2(&point, &res); ge_p3_to_p2(&point, &res);
ge_mul8(&point2, &point); ge_mul8(&point2, &point);
ge_p1p1_to_p3(&res, &point2); ge_p1p1_to_p3(&res, &point2);