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Signed-digit based ecmult_const algorithm

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Pieter Wuille
2022-12-30 14:43:37 -05:00
parent ba523be067
commit 4d16e90111
2 changed files with 216 additions and 86 deletions
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src/scalar.h
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@@ -25,7 +25,7 @@ static void secp256k1_scalar_clear(secp256k1_scalar *r);
/** Access bits from a scalar. All requested bits must belong to the same 32-bit limb. */
static unsigned int secp256k1_scalar_get_bits(const secp256k1_scalar *a, unsigned int offset, unsigned int count);
/** Access bits from a scalar. Not constant time. */
/** Access bits from a scalar. Not constant time in offset and count. */
static unsigned int secp256k1_scalar_get_bits_var(const secp256k1_scalar *a, unsigned int offset, unsigned int count);
/** Set a scalar from a big endian byte array. The scalar will be reduced modulo group order `n`.