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import cv2
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import numpy as np
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src = cv2.imread("logo.png")
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H, W, C = src.shape
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key = np.random.randint(0, 256, size=[H, W, C], dtype=np.uint8)
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cv2.imwrite("key-xor.jpg", key)
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encryption = cv2.bitwise_xor(src, key)
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cv2.imwrite("encryption-xor.jpg", encryption)
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decryption = cv2.bitwise_xor(encryption, key)
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cv2.imwrite("decryption-xor.jpg", decryption)

1
import numpy as np
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# 信息
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info = ["A", "B", "C", "D", "E", "F"]   # 待加密信息，['A', 'B', 'C', 'D', 'E', 'F']
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encrypt = [0] * len(info)               # 加密信息初始化，[0, 0, 0, 0, 0, 0]
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decrypt = [0] * len(info)               # 解密信息初始化，[0, 0, 0, 0, 0, 0]
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# 随机种子
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seed = 8888                             # 固定种子
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# seed = np.random.randint(0, 10000)    # 随机种子
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np.random.seed(seed)
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# 随机数
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num = np.random.random(size=len(info))  # 随机序列，如：[0.18756121 0.8445122  0.2391163  0.88173048 0.99823479 0.28678496]
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# 随机数排序
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index = np.arange(len(info))            # 随机序列排序前的索引，[0 1 2 3 4 5]
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index_sort = np.argsort(num)            # 随机序列排序后的索引，[0 2 5 1 3 4]
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# 加密
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for n in range(len(info)):
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    encrypt[index[n]] = info[index_sort[n]]    # 置乱加密，['A', 'C', 'F', 'B', 'D', 'E']
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# 解密
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for n in range(len(info)):
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    decrypt[index_sort[n]] = encrypt[index[n]] # 置乱解密，['A', 'B', 'C', 'D', 'E', 'F']

1
import cv2
2
import numpy as np
3

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# 初始信息
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src = cv2.imread("logo.png")
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H, W, C = src.shape
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encrypt = np.zeros((H, W, C), dtype=np.uint8)
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decrypt = np.zeros((H, W, C), dtype=np.uint8)
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# 图像尺寸大小
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L = H * W
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# 随机种子
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# seed = 8888                             # 固定种子
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seed = np.random.randint(0, 10000)    # 随机种子
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np.random.seed(seed)
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# 随机数
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num = np.random.random(L)  # 随机序列
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# 随机数排序
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index = np.arange(L)            # 随机序列排序前的索引
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index_sort = np.argsort(num)    # 随机序列排序后的索引
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# 加密
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for n in range(L):
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    h0 = index[n] // W
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    w0 = index[n] % W
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    h1 = index_sort[n] // W
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    w1 = index_sort[n] % W
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    encrypt[h0, w0, 0] = src[h1, w1, 0]
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    encrypt[h0, w0, 1] = src[h1, w1, 1]
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    encrypt[h0, w0, 2] = src[h1, w1, 2]
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cv2.imwrite("encrypt-shuffle.jpg", encrypt)
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# 解密
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for n in range(L):
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    h0 = index_sort[n] // W
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    w0 = index_sort[n] % W
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    h1 = index[n] // W
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    w1 = index[n] % W
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    decrypt[h0, w0, 0] = encrypt[h1, w1, 0]
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    decrypt[h0, w0, 1] = encrypt[h1, w1, 1]
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    decrypt[h0, w0, 2] = encrypt[h1, w1, 2]
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cv2.imwrite("decrypt-shuffle.jpg", decrypt)