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Revert DWORD for newHash (calculation mistake)

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This commit is contained in:
Andrew 2023-06-05 14:17:26 +03:00
parent 1603dbd6e2
commit 04e6362d7e
1 changed files with 9 additions and 4 deletions
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13
src/server.cpp
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@ -86,7 +86,10 @@ bool verifyServerKey(
SHA1(msgBuffer, 11, msgDigest);
QWORD newHash = (BYDWORD(&msgDigest[4]) >> 2 & BITMASK(30)) << 32 | BYDWORD(msgDigest);
DWORD newHash[2]{};
newHash[0] = BYDWORD(msgDigest);
newHash[1] = BYDWORD(&msgDigest[4]) >> 2 & BITMASK(30);
BIGNUM *x = BN_new();
BIGNUM *y = BN_new();
@ -162,10 +165,12 @@ void generateServerKey(
BN_CTX *ctx = BN_CTX_new();
DWORD bKey[4]{};
BOOL wrong = false;
QWORD pSignature = 0;
do {
wrong = false;
BIGNUM *c = BN_new();
BIGNUM *s = BN_new();
BIGNUM *x = BN_new();
@ -285,7 +290,7 @@ void generateServerKey(
BN_add(s, s, c);
// s^2 = s % genOrder (genOrder must be prime)
BN_mod_sqrt(s, s, genOrder, ctx);
if (BN_mod_sqrt(s, s, genOrder, ctx) == nullptr) wrong = true;
// s = s - b
BN_mod_sub(s, s, b, genOrder, ctx);
@ -313,7 +318,7 @@ void generateServerKey(
base24(pKey, (BYTE *)bKey);
std::cout << "attempt pass" << std::endl;
std::cout << "attempt pass " << pKey << " key is " << (wrong ? "INVALID" : "VALID") << std::endl;
BN_CTX_free(ctx);
EC_POINT_free(r);