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import json
import random
import numpy
import pickle
n = 17 # 长度改为 13
k_offset = 5 # 步长 (与 13 互质)
num_train = 5000000
num_test = 1000
# 一个固定的、按位置变化的常量,扩展到 13 位
# (来自圆周率,只是为了固定且看起来随机)
pos_const = [3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2] # 扩展了一位
import random
from typing import List, Tuple, Set, Optional
Latin = List[List[int]]
def cyclic_latin_square(n: int = 10) -> Latin:
return [[(i + j) % n for j in range(n)] for i in range(n)]
def is_latin_square(L: Latin) -> bool:
n = len(L)
target = set(range(n))
for i in range(n):
if set(L[i]) != target:
return False
for j in range(n):
col = {L[i][j] for i in range(n)}
if col != target:
return False
return True
def _try_random_intercalate_move(L: Latin, rng: random.Random) -> bool:
"""
Try one random 2x2 intercalate flip. Return True if moved, else False.
"""
n = len(L)
r1, r2 = rng.sample(range(n), 2)
c1, c2 = rng.sample(range(n), 2)
a = L[r1][c1]
b = L[r1][c2]
if a == b:
return False
# Need the 2x2 pattern:
# L[r1,c1]=a, L[r1,c2]=b
# L[r2,c1]=b, L[r2,c2]=a
if L[r2][c1] != b or L[r2][c2] != a:
return False
# Flip to:
# b a
# a b
L[r1][c1], L[r1][c2] = b, a
L[r2][c1], L[r2][c2] = a, b
return True
def mcmc_step(L: Latin, rng: random.Random, lazy_p: float = 0.1, max_trials: int = 200) -> None:
"""
One Markov step:
- with probability lazy_p: do nothing (aperiodicity)
- else: attempt up to max_trials random intercalate moves; if none found, do nothing
"""
if rng.random() < lazy_p:
return
for _ in range(max_trials):
if _try_random_intercalate_move(L, rng):
return
# No valid move found in trials -> stay
def sample_latin_square_10(
rng: random.Random,
burn_in: int = 50_000,
steps_after: int = 20_000,
lazy_p: float = 0.1,
max_trials_per_step: int = 200
) -> Latin:
"""
Start from cyclic Latin square and run MCMC.
Return one approximately-uniform sample.
"""
L = cyclic_latin_square(10)
# Burn-in
for _ in range(burn_in):
mcmc_step(L, rng, lazy_p=lazy_p, max_trials=max_trials_per_step)
# Extra steps (thinning / further mixing)
for _ in range(steps_after):
mcmc_step(L, rng, lazy_p=lazy_p, max_trials=max_trials_per_step)
return [row[:] for row in L]
def make_functions(
n: int,
seed: Optional[int] = None,
burn_in: int = 500000,
steps_between_samples: int = 500000,
lazy_p: float = 0.1,
max_trials_per_step: int = 200
) -> List[Latin]:
"""
Generate n distinct 10x10 Latin squares via MCMC (approx uniform).
Distinctness is enforced by hashing full matrices.
"""
rng = random.Random(seed)
out: List[Latin] = []
seen: Set[Tuple[Tuple[int, ...], ...]] = set()
# We keep one chain running and take samples separated by steps_between_samples.
L = cyclic_latin_square(10)
# burn-in on the running chain
for _ in range(burn_in):
mcmc_step(L, rng, lazy_p=lazy_p, max_trials=max_trials_per_step)
while len(out) < n:
# advance chain
for _ in range(steps_between_samples):
mcmc_step(L, rng, lazy_p=lazy_p, max_trials=max_trials_per_step)
sample = [row[:] for row in L]
key = tuple(tuple(row) for row in sample)
if key in seen:
continue
# Safety check (can be removed for speed)
if not is_latin_square(sample):
raise RuntimeError("Internal error: produced a non-Latin square (should not happen).")
seen.add(key)
out.append(sample)
return out
functions = make_functions(n=n)
print(functions)
#print(xxx)
def generate_samples_anchored_global(num_samples):
samples = []
vocab = '0123456789'
for _ in range(num_samples):
# 1. 随机明文 (数字列表)
plain_digits = [random.randint(0, 9) for _ in range(n)]
cipher_digits = [0] * n
# 2. 设置“锚点”
# cipher[0] = plain[0]
cipher_digits[0] = plain_digits[0]
# 3. 生成全局依赖
for i in range(1, n):
# cipher[i] = (plain[i] + plain[(i + k) % n] + C[i]) % 10
j = (i + k_offset) % n
val = functions[i][plain_digits[i]][plain_digits[j]]
#(plain_digits[i] + plain_digits[j] + pos_const[i]) % 10
cipher_digits[i] = val
# 转换回字符串
#plain_str = ''.join(map(str, plain_digits))
#cipher_str = ''.join(map(str, cipher_digits))
#samples.append({"input": cipher_str, "output": plain_str})
samples.append(cipher_digits+plain_digits)
#test_samples.append(cipher_digits+plain_digits)
return numpy.array(samples,dtype=numpy.uint16)
# --- 生成文件 ---
train_samples = generate_samples_anchored_global(num_train)
print(train_samples[0])
#print(xxx)
train_samples.tofile('train.bin')
#with open(f'{n}_anchored_global_mod10_train.jsonl', 'w') as f:
# for s in train_samples:
# f.write(json.dumps(s) + '\n')
test_samples = generate_samples_anchored_global(num_test)
test_samples.tofile('test.bin')
#with open(f'{n}_anchored_global_mod10_test.jsonl', 'w') as f:
# for s in test_samples:
# f.write(json.dumps(s) + '\n')
print(f"Generated {num_train} train samples and {num_test} test samples for ANCHORED GLOBAL (mod 10) task.")
print(f"n={n}, k_offset={k_offset}")
meta = {
'vocab_size': 11,
'block_size': n * 2,
'functions': functions
}
with open('meta.pkl', 'wb') as f:
pickle.dump(meta, f)
# --- 验证逻辑 ---
# 打印一个样本的解密过程,用于验证
print("\n--- Verification Sample ---")
if test_samples is None:
print("No test samples generated for verification.")
else:
for t in range(len(test_samples)):
c_str = test_samples[0,0:n]
p_str = test_samples[0,n:2*n]
#print(f"Cipher: {c_str}")
#print(f"Plain: {p_str}")
# 手动验证解密链
c = [int(x) for x in c_str]
p_actual = [int(x) for x in p_str]
p_solved = [-1] * n # -1 表示未知
#print("\nSolving sequence (MDM's perspective):")
p_solved[0] = c[0]
#print(f"Step 0: Solved p[0] = c[0] = {p_solved[0]}")
# (n=13, k=5) 的求解顺序
# 求解 p[i] 需要 p[(i+k)%n]
# 反过来看,p[0] -> p[i] s.t. (i+5)%13 = 0 => i = 8
# p[8] -> p[i] s.t. (i+5)%13 = 8 => i = 3
# p[3] -> p[i] s.t. (i+5)%13 = 3 => i = -2 % 13 = 11
# 链条: 0 -> 8 -> 3 -> 11 -> 6 -> 1 -> 9 -> 4 -> 12 -> 7 -> 2 -> 10 -> 5
solve_order = [12, 7, 2, 14, 9, 4, 16, 11, 6, 1, 13, 8, 3, 15, 10, 5]
for i_solve in solve_order:
# 找到它依赖谁
i_depend_on = (i_solve + k_offset) % n
# plain[i] = (cipher[i] - plain[j] - C[i]) % 10
val = -1
for j in range(10):
if functions[i_solve][j][p_solved[i_depend_on]] == c[i_solve]:
val = j
break
if(val == -1):
print("Oh no, what happens!")
#(c[i_solve] - p_solved[i_depend_on] - pos_const[i_solve]) % 10
p_solved[i_solve] = val
#print(f"Step N: Solved p[{i_solve}] = (c[{i_solve}] - p[{i_depend_on}] - C[{i_solve}]) % 10 = {val}")
#print("\nSolved Plain:", numpy.array(p_solved))
#print("Actual Plain:", p_str)
if (p_str == numpy.array(p_solved)).all():
#print("Verification SUCCESSFUL.")
continue
else:
print("Verification FAILED.")
print(xxxxx) |