encode,md5,base64,aes,des,rsa实现

 

[Python]

encode & decode

from urllib import parse



# url进行编码与解码
url = '你好啊'

url_encode = parse.quote(url)
print('url编码后:', url_encode)

url_decode = parse.unquote(url_encode)
print('url解码后:', url_decode)

url_encode2 = parse.quote_plus(url)
print('url2编码后:', url_encode2)

url_decode2 = parse.unquote_plus(url_encode2)
print('url2解码后:', url_decode2)

request_params = {
    "id": 1,
    "name": "lanlang"
}
param_encode = parse.urlencode(request_params)
print('param_encode:', param_encode)  # id=1&name=lanlang
param_decode = parse.unquote(param_encode)
print('param_decode:', param_decode)

md5

import hashlib



msg = 'hello, MD5摘要算法'
m = hashlib.md5()
m.update(msg.encode('utf-8'))
md5_data = m.hexdigest()  # 摘要
print('md5后的数据:', md5_data)
# acffb8e4d57563e9168fd0376fa9da4c

base64

import base64




# msg = 'hello, python'
msg = '你好哦'

# 编码
msg_byte = msg.encode()
print('文本字节:', msg_byte)
base64_encoded = base64.b64encode(msg_byte)
print('base64_encoded:', base64_encoded.decode())

# 解码
base64_decoded = base64.b64decode(base64_encoded)
print('base64_decoded:', base64_decoded, base64_decoded.decode())

aes

pip install pycryptodome

from Crypto.Cipher import AES
from Crypto.Util.Padding import pad, unpad
from Crypto.Random import get_random_bytes

# key = get_random_bytes(16)  # 生成随机的16字节密钥
key = b'1234567897891234'

plaintext = b'Hello, world!'  # 加密数据

cipher = AES.new(key, AES.MODE_ECB)  # 创建 AES 加密器对象
padded_plaintext = pad(plaintext, AES.block_size)  # 填充明文数据

ciphertext = cipher.encrypt(padded_plaintext)  # 加密

decrypted = cipher.decrypt(ciphertext)  # 解密
decrypted_data = unpad(decrypted, AES.block_size)  # 去除填充

print('原始数据:', plaintext)
print('加密后:', ciphertext.hex())
print('解密后:', decrypted_data)
exit(0)

data = b'Hello, world!'
# # 随机生成16字节（即128位）的加密密钥
# key = get_random_bytes(16)
# iv = get_random_bytes(16)

key = iv = b'1234567897891234'

# 使用CBC模式
cipher = AES.new(key, AES.MODE_CBC, iv)
# 对内容进行加密,pad函数用于分组和填充
encrypted_data = cipher.encrypt(pad(data, AES.block_size))

print('AES加密后数据:', encrypted_data, encrypted_data.hex())
# 需要重新new一个,否则会出现错误, 不能在encrypt之后,再进行decrypt
cipher_new = AES.new(key, AES.MODE_CBC, iv)
decrypted = cipher_new.decrypt(encrypted_data)
decrypted_data = unpad(decrypted, AES.block_size)
print('AES解密后数据:', decrypted_data.decode())









# 使用模块pycryptdome  --> pip install pycryptodome

rsa:

生成秘钥对

from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_OAEP


key = RSA.generate(2048)

# 私钥
private_key = key.export_key()
with open('private_key.pem', 'wb') as f:
    f.write(private_key)


# 公钥
public_key = key.public_key().export_key()
with open('public_key.pem', 'wb') as f:
    f.write(public_key)

encrypt & decrypt

from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_OAEP

# 加密
data = b'Hello, world!'
with open('public_key.pem', 'rb') as f:
    public_key = RSA.import_key(f.read())

cipher = PKCS1_OAEP.new(public_key)

encrypted_data = cipher.encrypt(data)

print('encrypted_data:', encrypted_data)


# 解密
with open('private_key.pem', 'rb') as f:
    private_key = RSA.import_key(f.read())

cipher = PKCS1_OAEP.new(private_key)

decrypted_data = cipher.decrypt(encrypted_data)

print('decrypted_data:', decrypted_data.decode())

 

 

pycryptodome模块更多参考:

• 　　https://www.jb51.net/python/3059815tp.htm

 

 

[Nodejs]

 

md5:

npm install crypto

const crypt = require('crypto')


let msg = 'hello, MD5摘要算法'

let md5 = crypt.createHash('md5')

md5_data = md5.update(msg).digest('hex')
console.log('Md5后的数据:', md5_data)

base64:

msg = '你好哦'


let buff = Buffer.from(msg, 'utf-8')

let base64_encoded = buff.toString('base64')

console.log('base64_encoded:', base64_encoded)
// 5L2g5aW95ZOm


let buff2 = Buffer.from(base64_encoded, 'base64')
let base64_decoded = buff2.toString('utf-8')
console.log('base64_decoded:', base64_decoded)

 

aes:

const crypt = require('crypto')

function aesEncrypt(data, key, iv) {
    const cipher = crypt.createCipheriv('aes128', key, iv);
    var crypted = cipher.update(data, 'utf8', 'hex');
    crypted += cipher.final('hex');
    return crypted;
}

function aesDecrypt(encrypted, key, iv) {
    const decipher = crypt.createDecipheriv('aes128', key, iv);
    var decrypted = decipher.update(encrypted, 'hex', 'utf8');
    decrypted += decipher.final('utf8');
    return decrypted;
}

key = '1234567897891234'
iv = '1234567897891234'
data = "Hello, world!"
encrypt_data = aesEncrypt(data, key, iv)
console.log('加密后数据:', encrypt_data)

encrypt_data = 'f4d236a9e916d66cf064686f4eb67c03'
decrypt_data = aesDecrypt(encrypt_data, key, iv)
console.log('解密后数据:', decrypt_data)

 

 

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