Module: Meowth::Util

Defined in:
lib/meowth/util.rb

Class Method Summary collapse

Class Method Details

.decrypt(ciper_text) ⇒ Object 



49
50
51
52
 
# File 'lib/meowth/util.rb', line 49

def self.decrypt(ciper_text)
  private_key = Meowth::Config.sign_cert_private_key
  private_key.private_decrypt(Base64.strict_decode64(ciper_text))
end

.encrypt(plain_text) ⇒ Object 



44
45
46
47
 
# File 'lib/meowth/util.rb', line 44

def self.encrypt(plain_text)
  public_key = Meowth::Config.encrypt_cert_public_key
  Base64.strict_encode64(public_key.public_encrypt(plain_text))
end

.encrypt_pin(pin, card) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
 
# File 'lib/meowth/util.rb', line 32

def self.encrypt_pin(pin, card)
  len = "%02d" % pin.length
  tmp = len + pin + "F" * (14 - pin.length)
  pin_byte = [tmp].pack("H*")
  card_no = "0" * (13 - card.length) + card
  tmp = "0000" + card_no[0..11]
  card_byte = [tmp].pack("H*")
  c = pin_byte.bytes.zip(card_byte.bytes).map{ |a, b| a ^ b }.pack('c*')
  public_key = Meowth::Config.encrypt_cert_public_key
  Base64.strict_encode64(public_key.public_encrypt(c))
end

.sign(params) ⇒ Object

请求报文签名（sha1摘要算法） 插入certId字段，计算签名，再插入签名，最后返回整个请求报文



11
12
13
14
15
16
17
18
19
 
# File 'lib/meowth/util.rb', line 11

def self.sign(params)
  params[Meowth::Constant::CERT_ID] = Meowth::Config.sign_cert_id
  data = params.sort.map{ |k, v| "#{k}=#{v}" }.join('&')
  digest = Digest::SHA1.hexdigest(data)
  key = Meowth::Config.sign_cert_private_key
  sign = Base64.strict_encode64(key.sign('sha1', digest))
  params[Meowth::Constant::SIGNATURE] = sign
  params
end

.verify(params) ⇒ Object

对响应报文签名验证（sha1摘要算法）



22
23
24
25
26
27
28
29
 
# File 'lib/meowth/util.rb', line 22

def self.verify(params)
  sign = params[Meowth::Constant::SIGNATURE]
  params.delete(Meowth::Constant::SIGNATURE)
  data = params.sort.map{ |k, v| "#{k}=#{v}" }.join('&')
  digest = Digest::SHA1.hexdigest(data)
  key = Meowth::Config.verify_sign_cert_public_key
  key.verify('sha1', Base64.strict_decode64(sign), digest)
end