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anquii/BLSCT v1.0.0
An implementation of BLSCT in Swift
⭐️ 0
🕓 2 weeks ago
iOS macOS
.package(url: "https://github.com/anquii/BLSCT.git", from: "v1.0.0")


Platform Swift Package Manager compatible License

An implementation of BLSCT in Swift. BLSCT is a privacy protocol developed by Navcoin, which merges Boneh-Lynn-Shacham (BLS) Signatures and Confidential Transactions (CT). BLSCT transactions are currently not supported, but will be added in a future release.


  • macOS 11+
  • iOS 14+


Swift Package Manager

Add the following line to your Package.swift file:

.package(url: "https://github.com/anquii/BLSCT.git", from: "1.0.0")

...or integrate with Xcode via File -> Swift Packages -> Add Package Dependency... using the URL of the repository.


import BLSCT

// Private BLS keys
let mclPreparator: MCLPreparing = MCLPreparator()
let privateBLSKeyDerivator: PrivateBLSKeyDerivating = PrivateBLSKeyDerivator()
let privateBLSMasterKeyDerivator: PrivateBLSMasterKeyDerivating = PrivateBLSMasterKeyDerivator(privateBLSKeyDerivator: privateBLSKeyDerivator)
let privateBLSChildKeyDerivator: PrivateBLSChildKeyDerivating = try PrivateBLSChildKeyDerivator(privateBLSKeyDerivator: privateBLSKeyDerivator, mclPreparator: mclPreparator)
let privateBLSKeysDerivator: PrivateBLSKeysDerivating = PrivateBLSKeysDerivator(privateBLSMasterKeyDerivator: privateBLSMasterKeyDerivator, privateBLSChildKeyDerivator: privateBLSChildKeyDerivator)
let privateBLSKeys = try privateBLSKeysDerivator.privateKeys(base58CheckEncodedPrivateMasterKey: "xprv9s21ZrQH143K3QTDL4LXw2F7HEK3wJUD2nW2nRk4stbPy6cq3jPPqjiChkVvvNKmPGJxWUtg6LnF5kejMRNNU3TGtRBeJgk33yuGBxrMPHi") // (privateBLSViewKey, privateBLSSpendKey, privateBLSBlindingKey)

// Public BLS keys
let publicBLSKeysDerivator: PublicBLSKeysDerivating = try PublicBLSKeysDerivator(privateBLSViewKey: privateBLSKeys.privateBLSViewKey, privateBLSSpendKey: privateBLSKeys.privateBLSSpendKey, mclPreparator: mclPreparator)
let publicBLSKeys = try publicBLSKeysDerivator.publicKeys(accountIndex: 0, subAddressIndex: 0) // (publicBLSViewKey, publicBLSSpendKey)

// Address
let addressCoder: AddressCoding = AddressCoder()
let address = addressCoder.address(publicBLSViewKey: publicBLSKeys.publicBLSViewKey, publicBLSSpendKey: publicBLSKeys.publicBLSSpendKey)
// e.g. xNVM1yykP9cSc737VCMzP8kWR77gPn1iujPitHRm6urfrVRDLbNinxsRTZb3CCsYCD3Uqj3RCQubEYaHj3XKmGMbFTDctT2JVJ6CCazXomPmoiPGB3qf8rfKp7NEyzKupjeSD4CfkKS

Find out more by exploring the public API, and by looking through the tests. If you're creating a wallet, make sure to store the publicBLSSpendKey alongside the integer pair (accountIndex, subAddressIndex) used as part of its derivation (as documented here).


BLSCT is licensed under the terms of the MIT license. See the LICENSE file for more information.


Stars: 0
Last commit: 2 weeks ago
jonrohan Something's broken? Yell at me @ptrpavlik. Praise and feedback (and money) is also welcome.

Release Notes

2 weeks ago

Initial release of BLSCT.

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API | Analytics