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-rw-r--r--crypto/ec/ecp_nistp521.c33
1 files changed, 17 insertions, 16 deletions
diff --git a/crypto/ec/ecp_nistp521.c b/crypto/ec/ecp_nistp521.c
index 75eeba853679..08b32787293b 100644
--- a/crypto/ec/ecp_nistp521.c
+++ b/crypto/ec/ecp_nistp521.c
@@ -128,6 +128,7 @@ static const felem_bytearray nistp521_curve_params[5] = {
# define NLIMBS 9
typedef uint64_t limb;
+typedef limb limb_aX __attribute((__aligned__(1)));
typedef limb felem[NLIMBS];
typedef uint128_t largefelem[NLIMBS];
@@ -141,14 +142,14 @@ static const limb bottom58bits = 0x3ffffffffffffff;
static void bin66_to_felem(felem out, const u8 in[66])
{
out[0] = (*((limb *) & in[0])) & bottom58bits;
- out[1] = (*((limb *) & in[7]) >> 2) & bottom58bits;
- out[2] = (*((limb *) & in[14]) >> 4) & bottom58bits;
- out[3] = (*((limb *) & in[21]) >> 6) & bottom58bits;
- out[4] = (*((limb *) & in[29])) & bottom58bits;
- out[5] = (*((limb *) & in[36]) >> 2) & bottom58bits;
- out[6] = (*((limb *) & in[43]) >> 4) & bottom58bits;
- out[7] = (*((limb *) & in[50]) >> 6) & bottom58bits;
- out[8] = (*((limb *) & in[58])) & bottom57bits;
+ out[1] = (*((limb_aX *) & in[7]) >> 2) & bottom58bits;
+ out[2] = (*((limb_aX *) & in[14]) >> 4) & bottom58bits;
+ out[3] = (*((limb_aX *) & in[21]) >> 6) & bottom58bits;
+ out[4] = (*((limb_aX *) & in[29])) & bottom58bits;
+ out[5] = (*((limb_aX *) & in[36]) >> 2) & bottom58bits;
+ out[6] = (*((limb_aX *) & in[43]) >> 4) & bottom58bits;
+ out[7] = (*((limb_aX *) & in[50]) >> 6) & bottom58bits;
+ out[8] = (*((limb_aX *) & in[58])) & bottom57bits;
}
/*
@@ -159,14 +160,14 @@ static void felem_to_bin66(u8 out[66], const felem in)
{
memset(out, 0, 66);
(*((limb *) & out[0])) = in[0];
- (*((limb *) & out[7])) |= in[1] << 2;
- (*((limb *) & out[14])) |= in[2] << 4;
- (*((limb *) & out[21])) |= in[3] << 6;
- (*((limb *) & out[29])) = in[4];
- (*((limb *) & out[36])) |= in[5] << 2;
- (*((limb *) & out[43])) |= in[6] << 4;
- (*((limb *) & out[50])) |= in[7] << 6;
- (*((limb *) & out[58])) = in[8];
+ (*((limb_aX *) & out[7])) |= in[1] << 2;
+ (*((limb_aX *) & out[14])) |= in[2] << 4;
+ (*((limb_aX *) & out[21])) |= in[3] << 6;
+ (*((limb_aX *) & out[29])) = in[4];
+ (*((limb_aX *) & out[36])) |= in[5] << 2;
+ (*((limb_aX *) & out[43])) |= in[6] << 4;
+ (*((limb_aX *) & out[50])) |= in[7] << 6;
+ (*((limb_aX *) & out[58])) = in[8];
}
/* BN_to_felem converts an OpenSSL BIGNUM into an felem */