Simple HKDF utility with Objective-C interface

RFC5869-compliant key derivation function.

NSData *derivedData = [HKDFKit deriveKey:aSeed info:anInfo salt:aSalt outputSize:anOutputSize];

TextSecure v2 protocol uses different bounds for the HKDF function.

NSData *derivedData = [TextSecureV2deriveKey:aSeed info:anInfo salt:aSalt outputSize:anOutputSize];

API reference is available on CocoaDocs.

Add this line to your Podfile

pod 'HKDFKit', '~> version number'

Licensed under the GPLv3: https://www.gnu.org/licenses/gpl-3.0.html