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Merge pull request #6948 from SparkiDev/ecc_curve_koblitz

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ECC double point: SECP112R2 and SEC128R2 are Koblitz curves
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JacobBarthelmeh 2023-11-15 14:23:42 -07:00 committed by GitHub
commit 9fa5d8872c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 8 deletions
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23
wolfcrypt/src/ecc.c
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@ -337,7 +337,7 @@ enum {
#endif
#define ecc_oid_secp112r1_sz CODED_SECP112R1_SZ
#endif /* !NO_ECC_SECP */
#ifdef HAVE_ECC_SECPR2
#if defined(HAVE_ECC_SECPR2) && defined(HAVE_ECC_KOBLITZ)
#ifdef HAVE_OID_ENCODING
#define CODED_SECP112R2 {1,3,132,0,7}
#define CODED_SECP112R2_SZ 5
@ -351,7 +351,7 @@ enum {
#define ecc_oid_secp112r2 CODED_SECP112R2
#endif
#define ecc_oid_secp112r2_sz CODED_SECP112R2_SZ
#endif /* HAVE_ECC_SECPR2 */
#endif /* HAVE_ECC_SECPR2 && HAVE_ECC_KOBLITZ */
#endif /* ECC112 */
#ifdef ECC128
#ifndef NO_ECC_SECP
@ -369,7 +369,7 @@ enum {
#endif
#define ecc_oid_secp128r1_sz CODED_SECP128R1_SZ
#endif /* !NO_ECC_SECP */
#ifdef HAVE_ECC_SECPR2
#if defined(HAVE_ECC_SECPR2) && defined(HAVE_ECC_KOBLITZ)
#ifdef HAVE_OID_ENCODING
#define CODED_SECP128R2 {1,3,132,0,29}
#define CODED_SECP128R2_SZ 5
@ -383,7 +383,7 @@ enum {
#define ecc_oid_secp128r2 CODED_SECP128R2
#endif
#define ecc_oid_secp128r2_sz CODED_SECP128R2_SZ
#endif /* HAVE_ECC_SECPR2 */
#endif /* HAVE_ECC_SECPR2 && HAVE_ECC_KOBLITZ */
#endif /* ECC128 */
#ifdef ECC160
#ifndef FP_ECC
@ -790,7 +790,7 @@ const ecc_set_type ecc_sets[] = {
1, /* cofactor */
},
#endif /* !NO_ECC_SECP */
#ifdef HAVE_ECC_SECPR2
#if defined(HAVE_ECC_SECPR2) && defined(HAVE_ECC_KOBLITZ)
{
14, /* size/bytes */
ECC_SECP112R2, /* ID */
@ -806,7 +806,7 @@ const ecc_set_type ecc_sets[] = {
ECC_SECP112R2_OID, /* oid sum */
4, /* cofactor */
},
#endif /* HAVE_ECC_SECPR2 */
#endif /* HAVE_ECC_SECPR2 && HAVE_ECC_KOBLITZ */
#endif /* ECC112 */
#ifdef ECC128
#ifndef NO_ECC_SECP
@ -826,7 +826,7 @@ const ecc_set_type ecc_sets[] = {
1, /* cofactor */
},
#endif /* !NO_ECC_SECP */
#ifdef HAVE_ECC_SECPR2
#if defined(HAVE_ECC_SECPR2) && defined(HAVE_ECC_KOBLITZ)
{
16, /* size/bytes */
ECC_SECP128R2, /* ID */
@ -842,7 +842,7 @@ const ecc_set_type ecc_sets[] = {
ECC_SECP128R2_OID, /* oid sum */
4, /* cofactor */
},
#endif /* HAVE_ECC_SECPR2 */
#endif /* HAVE_ECC_SECPR2 && HAVE_ECC_KOBLITZ */
#endif /* ECC128 */
#ifdef ECC160
#ifndef FP_ECC
@ -7801,6 +7801,13 @@ int ecc_projective_dbl_point_safe(ecc_point *P, ecc_point *R, mp_int* a,
}
else {
err = _ecc_projective_dbl_point(P, R, a, modulus, mp);
if ((err == MP_OKAY) && mp_iszero(R->z)) {
err = mp_set(R->x, 0);
if (err == MP_OKAY)
err = mp_set(R->y, 0);
if (err == MP_OKAY)
err = mp_set(R->z, 1);
}
}
return err;