解密解密 - 爱码网

RSA

#!/usr/bin/env python
# -*- coding:utf-8 -*-
import rsa
import base64


# ######### 1. 生成公钥私钥 #########
pub_key_obj, priv_key_obj = rsa.newkeys(256)

pub_key_str = pub_key_obj.save_pkcs1()
pub_key_code = base64.standard_b64encode(pub_key_str)

priv_key_str = priv_key_obj.save_pkcs1()
priv_key_code = base64.standard_b64encode(priv_key_str)

print(pub_key_code)
print(priv_key_code)

# ######### 2. 加密 #########
def encrypt(value):
    key_str = base64.standard_b64decode(pub_key_code)
    pk = rsa.PublicKey.load_pkcs1(key_str)
    val = rsa.encrypt(value.encode('utf-8'), pk)
    return val


# ######### 3. 解密 #########
def decrypt(value):
    key_str = base64.standard_b64decode(priv_key_code)
    pk = rsa.PrivateKey.load_pkcs1(key_str)
    val = rsa.decrypt(value, pk)
    return val


# ######### 基本使用 #########
if __name__ == '__main__':
    v = 'wupeiqi'
    v1 = encrypt(v)
    print(v1)
    v2 = decrypt(v1)
    print(v2)

# 1. 生成公钥私钥
import rsa
import base64

pub_key_obj, priv_key_obj = rsa.newkeys(1024)
pub_key_str = pub_key_obj.save_pkcs1()
priv_key_str = priv_key_obj.save_pkcs1()

pub_key_code = base64.standard_b64encode(pub_key_str)
priv_key_code = base64.standard_b64encode(priv_key_str)

"""
RSA算法本身要求加密内容也就是明文长度m必须0<m<密钥长度n
由于key是1024，加密内容长度则是128字节，再减去11个padding字节，则：117字节
"""

# 2. 加密
data = b'u' * 11000
key_str = base64.standard_b64decode(pub_key_code)
pk = rsa.PublicKey.load_pkcs1(key_str)
result = []
for i in range(0, len(data), 117):
    val = rsa.encrypt(data[i:i + 117], pk)
    result.append(val)
    print(len(val))
xxxxx = b''.join(result)
print(xxxxx)

# 3. 解密
key_str = base64.standard_b64decode(priv_key_code)
pk = rsa.PrivateKey.load_pkcs1(key_str)
result = []
for i in range(0, len(xxxxx), 128):
    val = rsa.decrypt(xxxxx[i:i + 128], pk)
    result.append(val)
print(result)

大文本加密