Mercurial > dropbear
diff libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c @ 1471:6dba84798cd5
Update to libtomcrypt 1.18.1, merged with Dropbear changes
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Fri, 09 Feb 2018 21:44:05 +0800 |
| parents | f849a5ca2efc |
| children |
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--- a/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c Thu Feb 08 23:11:40 2018 +0800 +++ b/libtomcrypt/src/pk/ecc/ltc_ecc_projective_dbl_point.c Fri Feb 09 21:44:05 2018 +0800 @@ -5,8 +5,6 @@ * * The library is free for all purposes without any express * guarantee it works. - * - * Tom St Denis, [email protected], http://libtom.org */ /* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b @@ -19,9 +17,9 @@ /** @file ltc_ecc_projective_dbl_point.c ECC Crypto, Tom St Denis -*/ +*/ -#if defined(LTC_MECC) && (!defined(LTC_MECC_ACCEL) || defined(LTM_LTC_DESC)) +#if defined(LTC_MECC) && (!defined(LTC_MECC_ACCEL) || defined(LTM_DESC)) /** Double an ECC point @@ -62,7 +60,7 @@ if (mp_cmp(R->z, modulus) != LTC_MP_LT) { if ((err = mp_sub(R->z, modulus, R->z)) != CRYPT_OK) { goto done; } } - + /* T2 = X - T1 */ if ((err = mp_sub(R->x, t1, t2)) != CRYPT_OK) { goto done; } if (mp_cmp_d(t2, 0) == LTC_MP_LT) { @@ -121,7 +119,7 @@ if ((err = mp_add(R->x, modulus, R->x)) != CRYPT_OK) { goto done; } } - /* Y = Y - X */ + /* Y = Y - X */ if ((err = mp_sub(R->y, R->x, R->y)) != CRYPT_OK) { goto done; } if (mp_cmp_d(R->y, 0) == LTC_MP_LT) { if ((err = mp_add(R->y, modulus, R->y)) != CRYPT_OK) { goto done; } @@ -134,14 +132,14 @@ if (mp_cmp_d(R->y, 0) == LTC_MP_LT) { if ((err = mp_add(R->y, modulus, R->y)) != CRYPT_OK) { goto done; } } - + err = CRYPT_OK; done: mp_clear_multi(t1, t2, NULL); return err; } #endif -/* $Source$ */ -/* $Revision$ */ -/* $Date$ */ +/* ref: $Format:%D$ */ +/* git commit: $Format:%H$ */ +/* commit time: $Format:%ai$ */