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Imported Upstream version 5.12.0.220

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Former-commit-id: c477e03582759447177c6d4bf412cd2355aad476
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2018-04-24 09:31:23 +00:00
parent 8bd104cef2
commit 8fc30896db
1200 changed files with 29534 additions and 26161 deletions
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34
external/boringssl/crypto/ec/p224-64.c vendored
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@@ -185,19 +185,33 @@ static const felem g_pre_comp[2][16][3] = {
/* Helper functions to convert field elements to/from internal representation */
static void bin28_to_felem(felem out, const u8 in[28]) {
out[0] = *((const uint64_t *)(in)) & 0x00ffffffffffffff;
out[1] = (*((const uint64_t *)(in + 7))) & 0x00ffffffffffffff;
out[2] = (*((const uint64_t *)(in + 14))) & 0x00ffffffffffffff;
out[3] = (*((const uint64_t *)(in + 20))) >> 8;
#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
out[0] = (*((const uint64_t *)(in + 20))) << 8 >> 8;
out[1] = (*((const uint64_t *)(in + 14))) >> 8;
out[2] = (*((const uint64_t *)(in + 7))) >> 8;
out[3] = *((const uint64_t *)(in)) >>8;
#else
out[0] = *((const uint64_t *)(in)) & 0x00ffffffffffffff;
out[1] = (*((const uint64_t *)(in + 7))) & 0x00ffffffffffffff;
out[2] = (*((const uint64_t *)(in + 14))) & 0x00ffffffffffffff;
out[3] = (*((const uint64_t *)(in + 20))) >> 8;
#endif
}
static void felem_to_bin28(u8 out[28], const felem in) {
size_t i;
for (i = 0; i < 7; ++i) {
#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
out[i] = *((u8 *)&in[3] + i + 1);
out[i + 7] = *((u8 *)&in[2] + i + 1);
out[i + 14] = *((u8 *)&in[1] + i + 1);
out[i + 21] = *((u8 *)&in[0] + i + 1);
#else
out[i] = in[0] >> (8 * i);
out[i + 7] = in[1] >> (8 * i);
out[i + 14] = in[2] >> (8 * i);
out[i + 21] = in[3] >> (8 * i);
#endif
}
}
@@ -223,16 +237,26 @@ static int BN_to_felem(felem out, const BIGNUM *bn) {
felem_bytearray b_in;
num_bytes = BN_bn2bin(bn, b_in);
#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
memcpy(b_out+sizeof(b_out)-num_bytes, b_in, num_bytes);
memset(b_out, 0, sizeof(b_out)-num_bytes);
#else
flip_endian(b_out, b_in, num_bytes);
#endif
bin28_to_felem(out, b_out);
return 1;
}
/* From internal representation to OpenSSL BIGNUM */
static BIGNUM *felem_to_BN(BIGNUM *out, const felem in) {
felem_bytearray b_in, b_out;
felem_bytearray b_out;
#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
felem_to_bin28(b_out, in);
#else
felem_bytearray b_in;
felem_to_bin28(b_in, in);
flip_endian(b_out, b_in, sizeof(b_out));
#endif
return BN_bin2bn(b_out, sizeof(b_out), out);
}