python3 php7,aes-256-gcm_python3_php7

作者：盐析白兔 | 2024-03-01 20:05:31

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from cryptography.hazmat.primitives.ciphers.aead import aesgcm

python3

from cryptography.hazmat.primitives.ciphers.aead import AESGCM

import cryptography.exceptions

import binascii

import base64

import os

def encrypt_aes256gcm(key, ciphertext, aad):

'''

aes-256-gcm 加密

key: 为str，hex字符串,64字符(32字节)

aad: 为str，hex字符串,32字符(16字节)

ciphertext: 为bytes, 明文

返回: base64 的密文

'''

aes_gcm_ivlen = 12

key_bytes = binascii.unhexlify(key)

aad_bytes = binascii.unhexlify(aad)

data = ciphertext

iv_bytes = os.urandom(aes_gcm_ivlen)

aesgcm = AESGCM(key_bytes) # tag_length=16

crypt_bytes = aesgcm.encrypt(iv_bytes, data, aad_bytes)

return base64.b64encode(iv_bytes + crypt_bytes)

def decrypt_aes256gcm(key, ciphertext, aad):

'''

aes-256-gcm 解密

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