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rangeproof: several API changes

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* add summing function for blinded generators
* drop `excess` and `gen` from `verify_tally`
* add extra_commit to rangeproof sign and verify
This commit is contained in:
Andrew Poelstra
2016-07-06 15:44:09 +00:00
committed by Tim Ruffing
parent f6c84a02f3
commit 94425d4a67
11 changed files with 266 additions and 87 deletions
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11
src/scalar_8x32_impl.h
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@@ -56,6 +56,17 @@ SECP256K1_INLINE static void secp256k1_scalar_set_int(secp256k1_scalar *r, unsig
r->d[7] = 0;
}
SECP256K1_INLINE static void secp256k1_scalar_set_u64(secp256k1_scalar *r, uint64_t v) {
r->d[0] = v;
r->d[1] = v >> 32;
r->d[2] = 0;
r->d[3] = 0;
r->d[4] = 0;
r->d[5] = 0;
r->d[6] = 0;
r->d[7] = 0;
}
SECP256K1_INLINE static unsigned int secp256k1_scalar_get_bits(const secp256k1_scalar *a, unsigned int offset, unsigned int count) {
VERIFY_CHECK((offset + count - 1) >> 5 == offset >> 5);
return (a->d[offset >> 5] >> (offset & 0x1F)) & ((1 << count) - 1);