Class: Wechat::Callback::MessageEncryption

Inherits:
Object
  • Object
show all
Extended by:
Wechat::Core::Common
Defined in:
lib/wechat/callback/message_encryption.rb

Overview

Message Encryption 是消息加密类。

Class Method Summary collapse

Class Method Details

.create(plain_text, encoded_aes_keys) ⇒ Object

消息加解密mp.weixin.qq.com/wiki/6/90f7259c0d0739bbb41d9f4c4c8e59a2.html

AES密钥：AESKey=Base64_Decode(EncodingAESKey + “=”)，EncodingAESKey尾部填充一个字符的“=”, 用Base64_Decode生成32个字节的AESKey msg_encrypt=Base64_Encode(AES_Encrypt [random(16B)+ msg_len(4B) + msg + $AppId])



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# File 'lib/wechat/callback/message_encryption.rb', line 14

def self.create(plain_text, encoded_aes_keys)

  assert_present! :plain_text,       plain_text
  assert_present! :encoded_aes_keys, encoded_aes_keys

  cipher = OpenSSL::Cipher::AES.new(256, 'CBC')
  cipher.encrypt
  cipher.padding = 0
  cipher.key     = Base64.decode64 "#{encoded_aes_keys.first}="

  Base64.encode64 cipher.update(plain_text)+cipher.final

end