diff options
Diffstat (limited to 'src/scalar.h')
| -rw-r--r-- | src/scalar.h | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/src/scalar.h b/src/scalar.h index aaaa3d8827..63c0d646a3 100644 --- a/src/scalar.h +++ b/src/scalar.h @@ -9,10 +9,6 @@ #include "util.h" -#if defined HAVE_CONFIG_H -#include "libsecp256k1-config.h" -#endif - #if defined(EXHAUSTIVE_TEST_ORDER) #include "scalar_low.h" #elif defined(SECP256K1_WIDEMUL_INT128) @@ -92,9 +88,10 @@ static int secp256k1_scalar_eq(const secp256k1_scalar *a, const secp256k1_scalar /** Find r1 and r2 such that r1+r2*2^128 = k. */ static void secp256k1_scalar_split_128(secp256k1_scalar *r1, secp256k1_scalar *r2, const secp256k1_scalar *k); -/** Find r1 and r2 such that r1+r2*lambda = k, - * where r1 and r2 or their negations are maximum 128 bits long (see secp256k1_ge_mul_lambda). */ -static void secp256k1_scalar_split_lambda(secp256k1_scalar *r1, secp256k1_scalar *r2, const secp256k1_scalar *k); +/** Find r1 and r2 such that r1+r2*lambda = k, where r1 and r2 or their + * negations are maximum 128 bits long (see secp256k1_ge_mul_lambda). It is + * required that r1, r2, and k all point to different objects. */ +static void secp256k1_scalar_split_lambda(secp256k1_scalar * SECP256K1_RESTRICT r1, secp256k1_scalar * SECP256K1_RESTRICT r2, const secp256k1_scalar * SECP256K1_RESTRICT k); /** Multiply a and b (without taking the modulus!), divide by 2**shift, and round to the nearest integer. Shift must be at least 256. */ static void secp256k1_scalar_mul_shift_var(secp256k1_scalar *r, const secp256k1_scalar *a, const secp256k1_scalar *b, unsigned int shift); |