def mystery(x):
if not isinstance(x, int) or x <= 0:
return False
if x.bit_length() != 32:
return False
# Obfuscation steps
y = ((x << 13) | (x >> 19)) & 0xFFFFFFFF
y = (y ^ 0x6A09E667)
y = (y + 0xBB67AE85) & 0xFFFFFFFF
y = y ^ (y >> 16)
return y == 0xF93B350C
def mystery(x):
import hashlib
if type(x) is not str:
return False
if len(x) != 1_000_000:
return False
try:
b = x.encode("ascii")
except UnicodeEncodeError:
return False
return hashlib.sha256(b).hexdigest() == (
"cdc76e5c9914fb9281a1c7e284d73e67"
"f1809a48a497200e046d39ccc7112cd0"
)
def mystery(x):
if not isinstance(x, int) or not (0 <= x < 0x100000000):
return False
# Unpack 32-bit integer into a state of two 16-bit values
s = [(x >> 16) & 0xFFFF, x & 0xFFFF]
# Round keys for the transformation
k = [0x1234, 0x5678, 0x9ABC, 0xDEF0]
for i in range(4):
# A round function: 16-bit left rotation by 5 and XOR with key
# The state is mixed based on a Feistel-like network structure
r = (((s[1] << 5) | (s[1] >> 11)) & 0xFFFF) ^ k[i]
s[0], s[1] = s[1], (s[0] ^ r) & 0xFFFF
# Re-pack the resulting state into a 32-bit integer and compare to target
res = (s[0] << 16) | s[1]
return res == 758011221
def mystery(x):
import hashlib
import unicodedata
if type(x) is not str:
return False
if len(x) != 43:
return False
if any(ord(ch) < 128 for ch in x):
return False
s = unicodedata.normalize("NFKC", x)
try:
b = s.encode("ascii")
except UnicodeEncodeError:
return False
if len(b) != 43:
return False
def r13(c):
if 65 <= c <= 90:
return ((c - 65 + 13) % 26) + 65
if 97 <= c <= 122:
return ((c - 97 + 13) % 26) + 97
return c
b = bytes(r13(c) for c in b)
return int.from_bytes(hashlib.sha256(b).digest(), "little") == (
0x92e5c937bfd0022d76db3c6de451568d4f2e08b0bc9aca699480d707b3fba8d7
)
def mystery(x):
if not isinstance(x, int) or not (0 <= x < 0x100000000):
return False
# Transformation parameters
p = [15, 30, 10, 25, 2, 17, 7, 22, 12, 27, 5, 20, 0, 18, 9, 24,
14, 31, 11, 26, 3, 16, 6, 21, 13, 28, 4, 19, 1, 29, 8, 23]
# Phase 1: Confusion (XOR)
x = (x ^ 0xDEADBEEF) & 0xFFFFFFFF
# Phase 2: Diffusion (Bit-level Permutation)
res = 0
for i in range(32):
if (x >> i) & 1:
res |= (1 << p[i])
# Phase 3: Mixing (Modular Addition and Circular Shift)
x = (res + 0x1337C0DE) & 0xFFFFFFFF
x = ((x << 7) | (x >> 25)) & 0xFFFFFFFF
# Phase 4: Final XOR
x ^= 0x5CA1AB1E
return x == 0xBAADF00D
def mystery(x):
if type(x) is not int:
return False
n = int(
"109417386415705274218097073220403576120037329454492059909138421314763499842889"
"34784717997257891267332497625752899781833797076537244027146743531593354333897"
)
if not (1 < x < n - 1):
return False
return pow(x, 2, n) == 1
def mystery(x):
if not isinstance(x, int) or not (0 <= x < 0x10000000000000000):
return False
# Phase 1: Modular arithmetic and XOR-based confusion
# The input integer is mixed using a constant XOR and a
# modular multiplication with a large odd constant.
x ^= 0x5555555555555555
x = (x * 0x9E3779B97F4A7C15) & 0xFFFFFFFFFFFFFFFF
# Phase 2: Multi-step XOR-shift diffusion
# These operations are inspired by common pseudo-random number
# generators and are designed to diffuse the bits across the
# 64-bit integer. Each step is a reversible bijection.
x ^= (x >> 32)
x = (x ^ (x << 16)) & 0xFFFFFFFFFFFFFFFF
x ^= (x >> 8)
return x == 0xa7382bb8d29258dd
def mystery(x):
import hmac
if type(x) is not str:
return False
if len(x) != 28:
return False
if any(ch not in "abcdefghijklmnopqrstuvwxyz ?" for ch in x):
return False
table = str.maketrans(
"abcdefghijklmnopqrstuvwxyz",
"nopqrstuvwxyzabcdefghijklm",
)
msg = x.translate(table)
digest = hmac.new(b"Jefe", msg.encode("ascii"), "sha256").digest()
return digest[::-1].hex() == (
"4338ec64b958ec9d8339279d083f005a"
"c77595082624046a4e7560bf46c1dc5b"
)
def mystery(x):
if not isinstance(x, int) or not (0 <= x < 0x10000000000000000):
return False
# Transformation parameters
mask = 0xFFFFFFFFFFFFFFFF
# Step 1: Initial XOR confusion
x = (x ^ 0x123456789ABCDEF0) & mask
# Step 2: Multiplicative diffusion using a large odd constant
x = (x * 0x3141592653589793) & mask
# Step 3: XOR-shift right
x = (x ^ (x >> 17)) & mask
# Step 4: XOR-shift left
x = (x ^ (x << 33)) & mask
# Step 5: Secondary multiplicative diffusion
x = (x * 0x2718281828459045) & mask
# Step 6: Final XOR-shift for bit avalanche
x = (x ^ (x >> 29)) & mask
return x == 11405786438676216239
def mystery(x):
import hmac
import hashlib
if type(x) is not str:
return False
if len(x) != 50:
return False
try:
raw = x.encode("latin-1")
except UnicodeEncodeError:
return False
msg = bytes((b ^ 0x57) for b in raw)
if any(c in b"\x00\r\n" for c in msg):
return False
key = bytes((0xAA ^ ((i * 31337) & 0)) for i in range(20))
digest = hmac.new(key, msg, hashlib.sha256).digest()
target = bytes.fromhex(
"fe65d5ce145563d922c1f83e8b095929"
"a78191d0ebb84d85460e80361ea93e77"
)[::-1]
return digest == target