非对称公钥加密对称密钥 #4

Merged
psyfbu5z8 merged 5 commits from 2200320240 into main 1 year ago

@ -0,0 +1,61 @@
import binascii
import hashlib
import base64
from Crypto.Cipher import DES
from Crypto.Random import get_random_bytes
import rsa
def des_key_encrypt_with_rsa():
# 读取 DES 密钥
with open('sandbox_sender/desPassword.txt', 'r') as des_password_gotcha:
des_pwd = des_password_gotcha.readline().strip() # 移除换行符
# 读取公钥
with open('public_key_receiver.txt', 'r') as pub_key_radio:
public_key_pair_string = pub_key_radio.readline().strip() # 移除换行符
# 假设公钥是以 `(n, e)` 格式存储
try:
public_key_pair_string2pair_step_1 = public_key_pair_string.split(', ')
public_key_pair_string2pair_step_2_a = public_key_pair_string2pair_step_1[0]
if public_key_pair_string2pair_step_2_a.startswith('('):
public_key_pair_string2pair_step_2_a = public_key_pair_string2pair_step_2_a[1:]
public_key_pair_string2pair_step_2_b = public_key_pair_string2pair_step_1[1]
if public_key_pair_string2pair_step_2_b.endswith(')'):
public_key_pair_string2pair_step_2_b = public_key_pair_string2pair_step_2_b[:-1]
# 转换成整数
n = int(public_key_pair_string2pair_step_2_a)
e = int(public_key_pair_string2pair_step_2_b)
# 打印输出以验证解析是否正确
#print(f"Parsed RSA public key: n = {n}, e = {e}")
except Exception as ex:
print(f"Error parsing the RSA public key: {ex}")
return
# 创建 RSA 公钥对象
try:
rsa_public_key = RSA.construct((n, e)) # 使用解析出的 (n, e) 创建 RSA 公钥
rsa_cipher = PKCS1_OAEP.new(rsa_public_key)
# 将 DES 密钥字符串编码为字节
des_pwd_bytes = des_pwd.encode()
# 使用 RSA 加密 DES 密钥
encrypted_des_pwd = rsa_cipher.encrypt(des_pwd_bytes)
# 将加密后的 DES 密钥转换为十六进制字符串
encrypted_des_pwd_hex = encrypted_des_pwd.hex()
# 将加密后的 DES 密钥保存到文件
with open('outbox/encrypted_pwd_des.txt', 'w') as encrypted_des_pwd_container:
encrypted_des_pwd_container.write(encrypted_des_pwd_hex)
print("DES password has been encrypted.")
except ValueError as ve:
print(f"Error while constructing RSA public key: {ve}")
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