非对称加密解密

 一.  加密代码

#私钥加密 公钥解密
import rsa
import base64

# #生成公钥私钥
pub_key_obj, priv_key_obj = rsa.newkeys(1024)

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)

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

ret = encrypt('hhhhhh')
print(ret)

def decrypt(values):
    key_str = base64.standard_b64decode(priv_key_code)
    pk = rsa.PrivateKey.load_pkcs1(key_str)
    val  = rsa.decrypt(values,pk)
    return val

ret1 = decrypt(ret)
print(ret1)

二. 实用代码

import rsa
import base64

# #生成公钥私钥
pub_key_obj, priv_key_obj = rsa.newkeys(1024)

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)

#加密
def encrypt(values):
    length = len(values)
    i,more = divmod(length,117)
    if more:
        i+= 1
    data_list = []
    for j in range(0,i):
        data = values[117*j:(j+1)*117]


        key_str = base64.standard_b64decode(pub_key_code)
        pk = rsa.PublicKey.load_pkcs1(key_str)
        val = rsa.encrypt(data.encode('utf-8'),pk)
        data_list.append(val)
    return b''.join(data_list)

ret = encrypt('hhhh' * 1000)
print(ret)

def decrypt(values):
    length = len(values)
    i, more = divmod(length, 128)
    if more:
        i += 1
    data_list = []
    for j in range(0, i):
        data = values[128 * j:(j + 1) * 128]
        key_str = base64.standard_b64decode(priv_key_code)
        pk = rsa.PrivateKey.load_pkcs1(key_str)
        val  = rsa.decrypt(data,pk)
        data_list.append(val.decode('utf-8'))
    return ''.join(data_list)

ret1 = decrypt(ret)
print(ret1)