pricers

Overview

This library supports RTB development for Open RTB common price encryption in Golang.

Installation

$ go get github.com/benjaminch/pricers

Supported encryption protocols

Google Private Data

Specs https://developers.google.com/ad-exchange/rtb/response-guide/decrypt-price

Examples

Creating a new Google Private Data Pricer

import "github.com/benjaminch/pricers/doubleclick"

var pricer *doubleclick.DoubleClickPricer
var err error
pricer, err = doubleclick.NewDoubleClickPricer(
    "ZS-DraBUUVeht_sMDgn1nnM3My_nq9TrEESbjubDkTU",   // Encryption key
    "vQo9-4KtlcXmPhWaYvc8asqYuiSVMiGUdZ1RLXfrK7U",   // Integrity key
    true,                                            // Keys are base64
    helpers.Utf8,                                    // Keys should be ingested as Utf-8
    1000000,                                         // Price scale Factor Micro
    false,                                           // No debug
)

Encrypting a clear price

import "github.com/benjaminch/pricers/doubleclick"

var result string
var err error
price := 42 // Clear price
seed := ""
result, err = pricer.Encrypt(seed, price)
if err != nil {
    err = errors.New("Encryption failed. Error : %s", err)
}

Decrypting an encrypted price

import "github.com/benjaminch/pricers/doubleclick"

var result float64
var err error
encryptedPrice := "WEp8nQAAAAADG-y45xxIC1tMWuTjzmDW6HtroQ"
result, err = pricer.Decrypt(encryptedPrice)
if err != nil {
    err = errors.New("Decryption failed. Error : %s", err)
}

Todos

• Re-organize directory layout following https://github.com/golang-standards/project-layout
• Complete documentation:
  • How to use the Pricer Builder (describing all params)
  • How to use the Pricer Encrypt function (describing all params)
  • How to use the Pricer Decrypt function (describing all params)
• Complete tests for helpers
• Complete tests for Google Private Data, including various key formats (hex, utf8, base64, etc.)
• Add other most common price encryption protocols (AES, etc.)
  • BlowFish
  • Symetric Algorithm
  • XOR