类型错误：ord() 预期长度为 1 的字符串，但 int 从图像中找到 bse64

Question

在这种情况下，我想使用 base64 将图像转换为字符串。然后我使用 ord() 方法转换为整数。但我有一个错误。这是我的简单代码：

def input_image_to_string():
filename = filedialog.askopenfile(
    initialdir="/",
    title="Pilih Gambar",
    filetypes=(
        ("png files", "*.png"),
        ("jpg files", "*.jpg"),
        ("bmp files", "*.bmp")
    )
)
image = filename.name
with open(image, 'rb') as file:
    result = base64.b64encode(file.read())
return result

def Hash_the_image(string, panjang):
    input = [ord(character) for character in string]
    print("Convert to Integers: \n" , input)
    pesan_block = array_t(uint8_t, panjang)
    masukan = pesan_block([uint8(i) for i in input])
    hasil = gimli_hash(masukan, panjang)
    print("Hasil hashing: ")
    return hasil
if __name__ == "__main__":
    input = input_image_to_string()
    panjang = len(input)
    print(panjang)
    output = Hash_the_image(input, panjang)
    print(output)

这是我的错误：

TypeError: ord() 预期长度为 1 的字符串，但找到了 int

Answer 1

切片字节在 Python3 中总是返回整数（已经表示 Unicode 代码点）：

>>> x = b'abc'
>>> x[1]
98
>>> ord('b')
98

ord() 已过时：

...
def Hash_the_image(input, panjang):
    input = [character for character in input]  # keep ints ...
    print("Convert to Integers: \n", input)
    pesan_block = array_t(uint8_t, panjang)
    masukan = pesan_block([uint8(i) for i in input])
    hasil = gimli_hash(masukan, panjang)
    print("Hasil hashing: ")
    return hasil
...

输出：

31796
Convert to Integers:
[105, 86, ...

Answer 2

试试下面的代码：

def input_image_to_string():
    filename = filedialog.askopenfile(
        initialdir="/",
        title="Pilih Gambar",
        filetypes=(
            ("png files", "*.png"),
            ("jpg files", "*.jpg"),
            ("bmp files", "*.bmp")
        )
    )
    image = filename.name
    with open(image, 'rb') as file:
        result = base64.b64encode(file.read())
    return result

def Hash_the_image(string, panjang):
    input = [ord(str(character)) for character in string]
    print("Convert to Integers: \n" , input)
    pesan_block = array_t(uint8_t, panjang)
    masukan = pesan_block([uint8(i) for i in input])
    hasil = gimli_hash(masukan, panjang)
    print("Hasil hashing: ")
    return hasil
if __name__ == "__main__":
    input = input_image_to_string()
    panjang = len(input)
    print(panjang)
    output = Hash_the_image(input, panjang)
    print(output)