diff options
Diffstat (limited to 'src/ringct/rctSigs.cpp')
| -rw-r--r-- | src/ringct/rctSigs.cpp | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/src/ringct/rctSigs.cpp b/src/ringct/rctSigs.cpp index fb67c77c4..fd068c4ea 100644 --- a/src/ringct/rctSigs.cpp +++ b/src/ringct/rctSigs.cpp @@ -58,29 +58,28 @@ namespace rct { //Borromean (c.f. gmax/andytoshi's paper) boroSig genBorromean(const key64 x, const key64 P1, const key64 P2, const bits indices) { - key64 L[2], c[2], s[2], alpha, P[2]; + key64 L[2], alpha; + key c; int naught = 0, prime = 0, ii = 0, jj=0; + boroSig bb; for (ii = 0 ; ii < 64 ; ii++) { naught = indices[ii]; prime = (indices[ii] + 1) % 2; - copy(P[0][ii], P1[ii]); //could probably user pointers - copy(P[1][ii], P2[ii]); skGen(alpha[ii]); scalarmultBase(L[naught][ii], alpha[ii]); - c[prime][ii] = hash_to_scalar(L[naught][ii]); - skGen(s[prime][ii]); - addKeys2(L[prime][ii], s[prime][ii], c[prime][ii], P[prime][ii]); + if (naught == 0) { + skGen(bb.s1[ii]); + c = hash_to_scalar(L[naught][ii]); + addKeys2(L[prime][ii], bb.s1[ii], c, P2[ii]); + } } - boroSig bb; - bb.ee = cn_fast_hash(L[1]); //or L[1].. + bb.ee = hash_to_scalar(L[1]); //or L[1].. key LL, cc; for (jj = 0 ; jj < 64 ; jj++) { - naught = indices[jj]; prime = (indices[jj] + 1) % 2; if (!indices[jj]) { sc_mulsub(bb.s0[jj].bytes, x[jj].bytes, bb.ee.bytes, alpha[jj].bytes); - copy(bb.s1[jj], s[1][jj]); } else { - copy(bb.s0[jj], s[0][jj]); - addKeys2(LL, bb.s0[jj], bb.ee, P[0][jj]); //different L0 + skGen(bb.s0[jj]); + addKeys2(LL, bb.s0[jj], bb.ee, P1[jj]); //different L0 cc = hash_to_scalar(LL); sc_mulsub(bb.s1[jj].bytes, x[jj].bytes, cc.bytes, alpha[jj].bytes); } @@ -90,14 +89,14 @@ namespace rct { //see above. bool verifyBorromean(const boroSig &bb, const key64 P1, const key64 P2) { - key64 Lv1, chash; key LL; + key64 Lv1; key chash, LL; int ii = 0; for (ii = 0 ; ii < 64 ; ii++) { addKeys2(LL, bb.s0[ii], bb.ee, P1[ii]); - chash[ii] = hash_to_scalar(LL); - addKeys2(Lv1[ii], bb.s1[ii], chash[ii], P2[ii]); + chash = hash_to_scalar(LL); + addKeys2(Lv1[ii], bb.s1[ii], chash, P2[ii]); } - key eeComputed = cn_fast_hash(Lv1); //hash function fine + key eeComputed = hash_to_scalar(Lv1); //hash function fine return equalKeys(eeComputed, bb.ee); } |