ASN1Swift 1.2.7

ASN1Swift 1.2.7

Maintained by Pavel T.

ASN1Swift 1.2.7

  • By
  • Pavel Tikhonenko

Carthage compatible CocoaPods Compatible Swift Package Manager compatible Platform GitHub 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.



To integrate ASN1Swift into your project using CocoaPods, specify it in your Podfile:

platform :ios, '13.0'

target 'YOUR_TARGET' do

pod 'ASN1Swift'

Then, run the following command:

$ 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:

.package(url: "", .branch("master"))

Then, specify "ASN1Swift" as a dependency of the Target in which you wish to use ASN1Swift.

Lastly, run the following command:

swift package update


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.


  • iOS 10.0+ / OSX 10.11+
  • Swift 5.2+


Decoding InAppReceipt

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



Library Decoding Time
ASN1Swift 0.154 seconds
filom/ASN1Decoder 1.032 seconds
asn1c ???
mrdepth/ASN1Decoder ???


ASN1Swift is released under a BSD-3-Clause. See LICENSE for more information.