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RSA python中的“str”对象无法转换为字节错误

encryption csv dataframe pandas python

Abhijeet · 技术社区 · 3 年前

我一直在使用 rsa公司 python库对数据进行加密和解密,一切正常。但是,当我使用将加密数据保存到CSV文件时熊猫如果试图通过从CVS文件中提取保存的数据值来解密保存的数据值,那么它将不再工作

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

我应该如何修复此错误

0 回复 | 直到 3 年前

Marcel Gohsen 3 年前

问题是加密密码的CSV文件的“序列化”。 encpass 属于类型 bytes 但是Pandas将文本字符串表示写入CSV文件。因此,熊猫也会将此作为字符串读回( "b'$\\xaa...'" )它看起来与bytes对象相似。

如果您想将密码写入文件,我建议您使用base64对其进行编码,并为其创建UTF-8字符串表示。单独使用UTF-8很可能会对(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)