From 5f143b1c29b72468ced35a2b9c19ce3b55b73c4b Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Sat, 17 Oct 2015 04:31:01 +0200 Subject: Add _legacy suffix to functions accessing points in compressed/coordinate representation --- src/ec25519.c | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) (limited to 'src') diff --git a/src/ec25519.c b/src/ec25519.c index a9c5748..b3d1a36 100644 --- a/src/ec25519.c +++ b/src/ec25519.c @@ -524,7 +524,7 @@ static void recip(uint32_t out[32], const uint32_t z[32]) { /* 2^255 - 21 */ mult(out, t1, z11); } -int ecc_25519_load_xy(ecc_25519_work_t *out, const ecc_int256_t *x, const ecc_int256_t *y) { +int ecc_25519_load_xy_legacy(ecc_25519_work_t *out, const ecc_int256_t *x, const ecc_int256_t *y) { int i; uint32_t X2[32], Y2[32], aX2[32], dX2[32], dX2Y2[32], aX2_Y2[32], _1_dX2Y2[32], r[32]; @@ -553,7 +553,12 @@ int ecc_25519_load_xy(ecc_25519_work_t *out, const ecc_int256_t *x, const ecc_in return 1; } -void ecc_25519_store_xy(ecc_int256_t *x, ecc_int256_t *y, const ecc_25519_work_t *in) { +int ecc_25519_load_xy(ecc_25519_work_t *out, const ecc_int256_t *x, const ecc_int256_t *y) { + return ecc_25519_load_xy_legacy(out, x, y); +} + + +void ecc_25519_store_xy_legacy(ecc_int256_t *x, ecc_int256_t *y, const ecc_25519_work_t *in) { uint32_t X[32], Y[32], Z[32]; int i; @@ -574,7 +579,12 @@ void ecc_25519_store_xy(ecc_int256_t *x, ecc_int256_t *y, const ecc_25519_work_t } } -int ecc_25519_load_packed(ecc_25519_work_t *out, const ecc_int256_t *in) { +void ecc_25519_store_xy(ecc_int256_t *x, ecc_int256_t *y, const ecc_25519_work_t *in) { + ecc_25519_store_xy_legacy(x, y, in); +} + + +int ecc_25519_load_packed_legacy(ecc_25519_work_t *out, const ecc_int256_t *in) { int i; uint32_t X2[32] /* X^2 */, aX2[32] /* aX^2 */, dX2[32] /* dX^2 */, _1_aX2[32] /* 1-aX^2 */, _1_dX2[32] /* 1-aX^2 */; uint32_t _1_1_dX2[32] /* 1/(1-aX^2) */, Y2[32] /* Y^2 */, Y[32], Yt[32]; @@ -607,13 +617,23 @@ int ecc_25519_load_packed(ecc_25519_work_t *out, const ecc_int256_t *in) { return 1; } -void ecc_25519_store_packed(ecc_int256_t *out, const ecc_25519_work_t *in) { +int ecc_25519_load_packed(ecc_25519_work_t *out, const ecc_int256_t *in) { + return ecc_25519_load_packed_legacy(out, in); +} + + +void ecc_25519_store_packed_legacy(ecc_int256_t *out, const ecc_25519_work_t *in) { ecc_int256_t y; - ecc_25519_store_xy(out, &y, in); + ecc_25519_store_xy_legacy(out, &y, in); out->p[31] |= (y.p[0] << 7); } +void ecc_25519_store_packed(ecc_int256_t *out, const ecc_25519_work_t *in) { + ecc_25519_store_packed_legacy(out, in); +} + + int ecc_25519_is_identity(const ecc_25519_work_t *in) { uint32_t Y_Z[32]; -- cgit v1.2.3