https://github.com/tikhop/asn1swift
ASN.1 Decoder in swift.
https://github.com/tikhop/asn1swift
asn1 asn1-decoder decodable decoder encodable encoder in-app-receipt pkcs7 swift x690
Last synced: 5 months ago
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ASN.1 Decoder in swift.
- Host: GitHub
- URL: https://github.com/tikhop/asn1swift
- Owner: tikhop
- License: bsd-3-clause
- Created: 2020-07-29T18:51:42.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2024-04-27T22:43:09.000Z (over 1 year ago)
- Last Synced: 2025-04-14T19:54:26.403Z (6 months ago)
- Topics: asn1, asn1-decoder, decodable, decoder, encodable, encoder, in-app-receipt, pkcs7, swift, x690
- Language: Swift
- Homepage:
- Size: 254 KB
- Stars: 35
- Watchers: 2
- Forks: 14
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
[](https://github.com/Carthage/Carthage)
[](https://cocoapods.org/pods/ASN1Swift)
[](https://github.com/apple/swift-package-manager)
[]()
[](https://raw.githubusercontent.com/tikhop/ASN1Swift/master/LICENSE)
ASN1Swift provides a transparent interface to decode ASN.1 data structures. The ASN.1 Data Structure must be encoded using BER/DER Encoding Rules. To simplify encoding and decoding process ASN1Swift implement Encoder/Decoder protocol provided by swift foundation. In other words it works preciesly the same as JSONEncoder/JSONDecoder.
Installation
------------
### CocoaPods
To integrate ASN1Swift into your project using CocoaPods, specify it in your `Podfile`:
```ruby
platform :ios, '13.0'
target 'YOUR_TARGET' do
use_frameworks!
pod 'ASN1Swift'
end
```
Then, run the following command:
```bash
$ pod install
```
In any swift file you'd like to use ASN1Swift, import the framework with `import ASN1Swift`.
### Swift Package Manager
To integrate using Apple's Swift package manager, add the following as a dependency to your `Package.swift`:
```swift
.package(url: "https://github.com/tikhop/ASN1Swift.git", .branch("master"))
```
Then, specify `"ASN1Swift"` as a dependency of the Target in which you wish to use ASN1Swift.
Lastly, run the following command:
```swift
swift package update
```
### Carthage
Make the following entry in your Cartfile:
```
github "tikhop/ASN1Swift"
```
Then run `carthage update`.
If this is your first time using Carthage in the project, you'll need to go through some additional steps as explained [over at Carthage](https://github.com/Carthage/Carthage#adding-frameworks-to-an-application).
### Requirements
- iOS 12.0+ / OSX 10.13+
- Swift 5.9+
Example
-------------
#### Decoding InAppReceipt
```swift
let asn1Decoder = ASN1Decoder()
let r = try! asn1Decoder.decode(Receipt.self, from: Data(...))
struct Receipt: ASN1Decodable
{
static var template: ASN1Template
{
return ASN1Template.universal(16).constructed()
}
var oid: ASN1SkippedField
var signedData: SignedData
enum CodingKeys: ASN1CodingKey
{
case oid
case signedData
var template: ASN1Template
{
switch self
{
case .oid:
return .universal(ASN1Identifier.Tag.objectIdentifier)
case .signedData:
return SignedData.template
}
}
}
}
....
```
## Benchmarks
Library | Decoding Time
-------------------------------------------------------------- | ------------------
ASN1Swift | 0.154 seconds
[filom/ASN1Decoder](https://github.com/filom/ASN1Decoder) | 1.032 seconds
[asn1c](https://github.com/vlm/asn1c) | ???
[mrdepth/ASN1Decoder](https://github.com/mrdepth/ASN1Decoder) | ???
## License
ASN1Swift is released under a BSD-3-Clause. See [LICENSE](https://github.com/tikhop/ASN1Swift/blob/master/LICENSE) for more information.