无法将 'str' 对象转换为 RSA python 中的字节错误

Question

我一直在使用 rsa python 库来加密和解密数据，一切正常。但是，当我使用 pandas 将加密数据保存到 CSV 文件时，如果尝试通过从 CVS 文件中提取保存的数据值来解密它，则它不再有效

下面是我的python代码

import rsa
import pandas as pd


key = int(input("enter an interger key value : ")) #512
paasword = input("input pass : ")

publicKey, privateKey = rsa.newkeys(key) 
encpass = rsa.encrypt(paasword.encode(),publicKey)

print("\noriginal string: ", paasword)
print("\nencrypted string: ", encpass)

# Save to New CSV file


data={'Name':['Jhon'], 'Password':[encpass], } #new dict
df = pd.DataFrame(data) # create new pandas DataFrame

df.to_csv('my_data.csv', index=False) # write a new csv file

# Extract form CSV file

df = pd.read_csv("my_data.csv",index_col = 0) #using 0th column (Name) as index
find_password = df['Password']['Jhon'] #column id , index of that row;

print(find_password)

decpass = rsa.decrypt(find_password, privateKey).decode()
print("\ndecrypted string: ", decMessage)


> enter an integer key value: 512
> input pass: abhijeetbyte123

> original string:  abhijeetbyte123

> encrypted string:  b',.\x89\xb8&"\xdc|\x97.................................


> error : TypeError: cannot convert 'str' object to bytes

我应该如何解决这个错误

Answer 1

问题是加密密码的 CSV 文件“序列化”。 encpass 是 bytes 类型，但 Pandas 将文字字符串表示形式写入 CSV 文件。因此，Pandas 也会将其作为字符串 ("b'$\xaa...'") 读回，它看起来仅类似于字节对象。

如果您想将密码写入文件，我建议您使用 base64 对其进行编码并创建一个 UTF-8 字符串表示形式。单独的 UTF-8 很可能会为（伪）随机字节流产生编码错误。

import rsa
from base64 import b64encode, b64decode
import pandas as pd


key = int(input("enter an interger key value : ")) #512
paasword = input("input pass : ")

publicKey, privateKey = rsa.newkeys(key) 
encpass = rsa.encrypt(paasword.encode(),publicKey)

print("\noriginal string: ", paasword)
print("\nencrypted string: ", encpass)

# Encode encrypted password to base64 and produce UTF-8 conform string
b64_enc_pass = b64encode(encpass).decode()

# Save to New CSV file
data={'Name':['Jhon'], 'Password':[b64_enc_pass], } #new dict
df = pd.DataFrame(data) # create new pandas DataFrame

df.to_csv('my_data.csv', index=False) # write a new csv file

# Extract form CSV file

df = pd.read_csv("my_data.csv",index_col = 0) #using 0th column (Name) as index
find_password = df['Password']['Jhon'] #column id , index of that row;

# Decode encrypted password from UTF-8 encoded string
find_password = b64decode(find_password.encode())

print(find_password)

decpass = rsa.decrypt(find_password, privateKey).decode()
print("\ndecrypted string: ", decpass)

无法将 'str' 对象转换为 RSA python 中的字节错误

Cannot convert 'str' object to bytes error in RSA python

python

csv

encryption

dataframe

pandas