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Add _legacy suffix to functions accessing points in compressed/coordinate representation

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This commit is contained in:
Matthias Schiffer 2015-10-17 04:31:01 +02:00
parent 256e972b36
commit 5f143b1c29
2 changed files with 63 additions and 9 deletions
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30
src/ec25519.c
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@ -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];