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Add schnorrsig module which implements BIP-schnorr [0] compatible signing, verification and batch verification.

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[0] https://github.com/sipa/bips/blob/bip-schnorr/bip-schnorr.mediawiki
This commit is contained in:
Andrew Poelstra
2018-05-09 15:37:35 +00:00
committed by Tim Ruffing
parent a1f16a0a53
commit c59c602dd6
15 changed files with 1423 additions and 37 deletions
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35
src/scalar_8x32_impl.h
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@@ -755,9 +755,7 @@ static SECP256K1_INLINE void secp256k1_scalar_cmov(secp256k1_scalar *r, const se
#ifdef WORDS_BIGENDIAN
#define LE32(p) ((((p) & 0xFF) << 24) | (((p) & 0xFF00) << 8) | (((p) & 0xFF0000) >> 8) | (((p) & 0xFF000000) >> 24))
#define BE32(p) (p)
#else
#define BE32(p) ((((p) & 0xFF) << 24) | (((p) & 0xFF00) << 8) | (((p) & 0xFF0000) >> 8) | (((p) & 0xFF000000) >> 24))
#define LE32(p) (p)
#endif
@@ -816,22 +814,22 @@ static void secp256k1_scalar_chacha20(secp256k1_scalar *r1, secp256k1_scalar *r2
x14 += 0;
x15 += over_count;
r1->d[7] = LE32(x0);
r1->d[6] = LE32(x1);
r1->d[5] = LE32(x2);
r1->d[4] = LE32(x3);
r1->d[3] = LE32(x4);
r1->d[2] = LE32(x5);
r1->d[1] = LE32(x6);
r1->d[0] = LE32(x7);
r2->d[7] = LE32(x8);
r2->d[6] = LE32(x9);
r2->d[5] = LE32(x10);
r2->d[4] = LE32(x11);
r2->d[3] = LE32(x12);
r2->d[2] = LE32(x13);
r2->d[1] = LE32(x14);
r2->d[0] = LE32(x15);
r1->d[7] = x0;
r1->d[6] = x1;
r1->d[5] = x2;
r1->d[4] = x3;
r1->d[3] = x4;
r1->d[2] = x5;
r1->d[1] = x6;
r1->d[0] = x7;
r2->d[7] = x8;
r2->d[6] = x9;
r2->d[5] = x10;
r2->d[4] = x11;
r2->d[3] = x12;
r2->d[2] = x13;
r2->d[1] = x14;
r2->d[0] = x15;
over1 = secp256k1_scalar_check_overflow(r1);
over2 = secp256k1_scalar_check_overflow(r2);
@@ -841,7 +839,6 @@ static void secp256k1_scalar_chacha20(secp256k1_scalar *r1, secp256k1_scalar *r2
#undef ROTL32
#undef QUARTERROUND
#undef BE32
#undef LE32
#endif /* SECP256K1_SCALAR_REPR_IMPL_H */