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-rw-r--r--security/nss/lib/freebl/ecl/ecl.c127
1 files changed, 72 insertions, 55 deletions
diff --git a/security/nss/lib/freebl/ecl/ecl.c b/security/nss/lib/freebl/ecl/ecl.c
index 3540af781..ca87b490c 100644
--- a/security/nss/lib/freebl/ecl/ecl.c
+++ b/security/nss/lib/freebl/ecl/ecl.c
@@ -2,11 +2,16 @@
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifdef FREEBL_NO_DEPEND
+#include "../stubs.h"
+#endif
+
#include "mpi.h"
#include "mplogic.h"
#include "ecl.h"
#include "ecl-priv.h"
#include "ecp.h"
+#include "ecl-curve.h"
#include <stdlib.h>
#include <string.h>
@@ -128,37 +133,16 @@ CLEANUP:
return group;
}
-/* Construct ECGroup from hex parameters and name, if any. Called by
- * ECGroup_fromHex and ECGroup_fromName. */
+/* Construct an ECGroup. */
ECGroup *
-ecgroup_fromNameAndHex(const ECCurveName name,
- const ECCurveParams *params)
+construct_ecgroup(const ECCurveName name, mp_int irr, mp_int curvea,
+ mp_int curveb, mp_int genx, mp_int geny, mp_int order,
+ int cofactor, ECField field, const char *text)
{
- mp_int irr, curvea, curveb, genx, geny, order;
int bits;
ECGroup *group = NULL;
mp_err res = MP_OKAY;
- /* initialize values */
- MP_DIGITS(&irr) = 0;
- MP_DIGITS(&curvea) = 0;
- MP_DIGITS(&curveb) = 0;
- MP_DIGITS(&genx) = 0;
- MP_DIGITS(&geny) = 0;
- MP_DIGITS(&order) = 0;
- MP_CHECKOK(mp_init(&irr));
- MP_CHECKOK(mp_init(&curvea));
- MP_CHECKOK(mp_init(&curveb));
- MP_CHECKOK(mp_init(&genx));
- MP_CHECKOK(mp_init(&geny));
- MP_CHECKOK(mp_init(&order));
- MP_CHECKOK(mp_read_radix(&irr, params->irr, 16));
- MP_CHECKOK(mp_read_radix(&curvea, params->curvea, 16));
- MP_CHECKOK(mp_read_radix(&curveb, params->curveb, 16));
- MP_CHECKOK(mp_read_radix(&genx, params->genx, 16));
- MP_CHECKOK(mp_read_radix(&geny, params->geny, 16));
- MP_CHECKOK(mp_read_radix(&order, params->order, 16));
-
/* determine number of bits */
bits = mpl_significant_bits(&irr) - 1;
if (bits < MP_OKAY) {
@@ -167,12 +151,12 @@ ecgroup_fromNameAndHex(const ECCurveName name,
}
/* determine which optimizations (if any) to use */
- if (params->field == ECField_GFp) {
+ if (field == ECField_GFp) {
switch (name) {
case ECCurve_SECG_PRIME_256R1:
group =
ECGroup_consGFp(&irr, &curvea, &curveb, &genx, &geny,
- &order, params->cofactor);
+ &order, cofactor);
if (group == NULL) {
res = MP_UNDEF;
goto CLEANUP;
@@ -183,7 +167,7 @@ ecgroup_fromNameAndHex(const ECCurveName name,
case ECCurve_SECG_PRIME_521R1:
group =
ECGroup_consGFp(&irr, &curvea, &curveb, &genx, &geny,
- &order, params->cofactor);
+ &order, cofactor);
if (group == NULL) {
res = MP_UNDEF;
goto CLEANUP;
@@ -194,7 +178,7 @@ ecgroup_fromNameAndHex(const ECCurveName name,
/* use generic arithmetic */
group =
ECGroup_consGFp_mont(&irr, &curvea, &curveb, &genx, &geny,
- &order, params->cofactor);
+ &order, cofactor);
if (group == NULL) {
res = MP_UNDEF;
goto CLEANUP;
@@ -206,62 +190,95 @@ ecgroup_fromNameAndHex(const ECCurveName name,
}
/* set name, if any */
- if ((group != NULL) && (params->text != NULL)) {
- group->text = strdup(params->text);
+ if ((group != NULL) && (text != NULL)) {
+ group->text = strdup(text);
if (group->text == NULL) {
res = MP_MEM;
}
}
CLEANUP:
+ if (group && res != MP_OKAY) {
+ ECGroup_free(group);
+ return NULL;
+ }
+ return group;
+}
+
+/* Construct ECGroup from parameters and name, if any. */
+ECGroup *
+ecgroup_fromName(const ECCurveName name,
+ const ECCurveBytes *params)
+{
+ mp_int irr, curvea, curveb, genx, geny, order;
+ ECGroup *group = NULL;
+ mp_err res = MP_OKAY;
+
+ /* initialize values */
+ MP_DIGITS(&irr) = 0;
+ MP_DIGITS(&curvea) = 0;
+ MP_DIGITS(&curveb) = 0;
+ MP_DIGITS(&genx) = 0;
+ MP_DIGITS(&geny) = 0;
+ MP_DIGITS(&order) = 0;
+ MP_CHECKOK(mp_init(&irr));
+ MP_CHECKOK(mp_init(&curvea));
+ MP_CHECKOK(mp_init(&curveb));
+ MP_CHECKOK(mp_init(&genx));
+ MP_CHECKOK(mp_init(&geny));
+ MP_CHECKOK(mp_init(&order));
+ MP_CHECKOK(mp_read_unsigned_octets(&irr, params->irr, params->scalarSize));
+ MP_CHECKOK(mp_read_unsigned_octets(&curvea, params->curvea, params->scalarSize));
+ MP_CHECKOK(mp_read_unsigned_octets(&curveb, params->curveb, params->scalarSize));
+ MP_CHECKOK(mp_read_unsigned_octets(&genx, params->genx, params->scalarSize));
+ MP_CHECKOK(mp_read_unsigned_octets(&geny, params->geny, params->scalarSize));
+ MP_CHECKOK(mp_read_unsigned_octets(&order, params->order, params->scalarSize));
+
+ group = construct_ecgroup(name, irr, curvea, curveb, genx, geny, order,
+ params->cofactor, params->field, params->text);
+
+CLEANUP:
mp_clear(&irr);
mp_clear(&curvea);
mp_clear(&curveb);
mp_clear(&genx);
mp_clear(&geny);
mp_clear(&order);
- if (res != MP_OKAY) {
+ if (group && res != MP_OKAY) {
ECGroup_free(group);
return NULL;
}
return group;
}
-/* Construct ECGroup from hexadecimal representations of parameters. */
-ECGroup *
-ECGroup_fromHex(const ECCurveParams *params)
+/* Construct ECCurveBytes from an ECCurveName */
+const ECCurveBytes *
+ec_GetNamedCurveParams(const ECCurveName name)
{
- return ecgroup_fromNameAndHex(ECCurve_noName, params);
+ if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
+ (ecCurve_map[name] == NULL)) {
+ return NULL;
+ } else {
+ return ecCurve_map[name];
+ }
}
/* Construct ECGroup from named parameters. */
ECGroup *
ECGroup_fromName(const ECCurveName name)
{
- ECGroup *group = NULL;
- ECCurveParams *params = NULL;
- mp_err res = MP_OKAY;
+ const ECCurveBytes *params = NULL;
- params = EC_GetNamedCurveParams(name);
+ /* This doesn't work with Curve25519 but it's not necessary to. */
+ PORT_Assert(name != ECCurve25519);
+
+ params = ec_GetNamedCurveParams(name);
if (params == NULL) {
- res = MP_UNDEF;
- goto CLEANUP;
+ return NULL;
}
/* construct actual group */
- group = ecgroup_fromNameAndHex(name, params);
- if (group == NULL) {
- res = MP_UNDEF;
- goto CLEANUP;
- }
-
-CLEANUP:
- EC_FreeCurveParams(params);
- if (res != MP_OKAY) {
- ECGroup_free(group);
- return NULL;
- }
- return group;
+ return ecgroup_fromName(name, params);
}
/* Validates an EC public key as described in Section 5.2.2 of X9.62. */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 00:29:01 +0000