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BOOL type, slight refactor, cleanup

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This commit is contained in:
Andrew 2023-06-04 16:44:22 +03:00
parent 799fee5a68
commit 21e31fd1b6
2 changed files with 40 additions and 14 deletions
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22
src/header.h
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@ -39,8 +39,8 @@
#define FIELD_BITS_2003 512
#define FIELD_BYTES_2003 64
#define NEXTNBITS(field, n, offset) (((QWORD)field >> offset) & ((1ULL << (n)) - 1))
#define FIRSTNBITS(field, n) NEXTNBITS(field, n, 0)
#define NEXTSNBITS(field, n, offset) (((QWORD)field >> offset) & ((1ULL << (n)) - 1))
#define FIRSTNBITS(field, n) NEXTSNBITS(field, n, 0)
// Confirmation ID generator constants
#define SUCCESS 0
@ -52,6 +52,7 @@
#define ERR_UNLUCKY 6
// Type definitions
typedef bool BOOL;
typedef uint8_t BYTE;
typedef uint16_t WORD;
typedef uint32_t DWORD;
@ -95,8 +96,21 @@ Options parseCommandLine(int argc, char* argv[]);
void showHelp(char *argv[]);
// xp.cpp
bool verifyXPKey(EC_GROUP *eCurve, EC_POINT *generator, EC_POINT *publicKey, char (&cdKey)[25]);
void generateXPKey(EC_GROUP *eCurve, EC_POINT *generator, BIGNUM *order, BIGNUM *privateKey, DWORD pRaw, char (&cdKey)[25]);
bool verifyXPKey(
EC_GROUP *eCurve,
EC_POINT *generator,
EC_POINT *publicKey,
char (&cdKey)[25]
);
void generateXPKey(
EC_GROUP *eCurve,
EC_POINT *generator,
BIGNUM *order,
BIGNUM *privateKey,
DWORD pRaw,
char (&cdKey)[25]
);
// server.cpp

32
src/xp.cpp
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@ -18,27 +18,39 @@
#include "header.h"
/* Unpacks the Windows XP Product Key. */
void unpackXP(QWORD (&pRaw)[2], DWORD &pSerial, DWORD &pHash, QWORD &pSignature) {
void unpackXP(
QWORD (&pRaw)[2],
DWORD &pSerial,
DWORD &pHash,
QWORD &pSignature
) {
// We're assuming that the quantity of information within the product key is at most 114 bits.
// log2(24^25) = 114.
// Serial = Bits [0..30] -> 31 bits
pSerial = FIRSTNBITS(pRaw[0], 31);
// Hash (e) = Bits [31..58] -> 28 bits
pHash = NEXTNBITS(pRaw[0], 28, 31);
// Hash = Bits [31..58] -> 28 bits
pHash = NEXTSNBITS(pRaw[0], 28, 31);
// Signature (s) = Bits [59..113] -> 55 bits
pSignature = FIRSTNBITS(pRaw[1], 51) << 5 | NEXTNBITS(pRaw[0], 5, 59);
// Signature = Bits [59..113] -> 56 bits
pSignature = FIRSTNBITS(pRaw[1], 51) << 5 | NEXTSNBITS(pRaw[0], 5, 59);
}
/* Packs the Windows XP Product Key. */
void packXP(QWORD (&pRaw)[2], DWORD pSerial, DWORD pHash, QWORD pSignature) {
pRaw[0] = FIRSTNBITS(pSignature, 5) << 59 | FIRSTNBITS(pHash, 28) << 31 | pSerial;
void packXP(
QWORD (&pRaw)[2],
DWORD pSerial,
DWORD pHash,
QWORD pSignature
) {
// The quantity of information the key provides is 114 bits.
// We're storing it in 2 64-bit quad-words with 14 trailing bits.
// 64 * 2 = 128
// sig is 56 bits long, 5 of them are used -> 51 bits remaining
pRaw[1] = NEXTNBITS(pSignature, 51, 5);
// Signature [114..59] <- Hash [58..31] <- Serial [30..1] <- Upgrade [0]
pRaw[0] = FIRSTNBITS(pSignature, 5) << 59 | FIRSTNBITS(pHash, 28) << 31 | pSerial;
pRaw[1] = NEXTSNBITS(pSignature, 51, 5);
}
/* Verify Product Key */