commit 391861311c87a2968f21a3a93f146cc8e0de3181 Author: Nick Mathewson nickm@torproject.org Date: Tue Jul 15 15:43:40 2014 +0200

Small tweaks to make curve25519-donna32 compile with our warnings --- src/ext/curve25519_donna/curve25519-donna.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ext/curve25519_donna/curve25519-donna.c b/src/ext/curve25519_donna/curve25519-donna.c index 75c9f91..5a0c340 100644 --- a/src/ext/curve25519_donna/curve25519-donna.c +++ b/src/ext/curve25519_donna/curve25519-donna.c @@ -271,6 +271,7 @@ div_by_2_25(const limb v) return (v + roundoff) >> 25; }

+#if 0 /* return v / (2^25), using only shifts and adds. * * On entry: v can take any value. */ @@ -280,6 +281,7 @@ div_s32_by_2_25(const s32 v) const s32 roundoff = ((uint32_t)(v >> 31)) >> 7; return (v + roundoff) >> 25; } +#endif

/* Reduce all coefficients of the short form input so that |x| < 2^26. * @@ -485,7 +487,7 @@ fcontract(u8 *output, limb *input_limbs) {

/* |input_limbs[i]| < 2^26, so it's valid to convert to an s32. */ for (i = 0; i < 10; i++) { - input[i] = input_limbs[i]; + input[i] = (s32) input_limbs[i]; }

for (j = 0; j < 2; ++j) { @@ -848,6 +850,8 @@ crecip(limb *out, const limb *z) { /* 2^255 - 21 */ fmul(out,t1,z11); }

+int curve25519_donna(u8 *mypublic, const u8 *secret, const u8 *basepoint); + int curve25519_donna(u8 *mypublic, const u8 *secret, const u8 *basepoint) { limb bp[10], x[10], z[11], zmone[10];