//
//  DigestHelper.swift
//  PSCB-OOS-iOS
//
//  Created by Antonov Ilia on 28.10.2020.
//

import Foundation
import CommonCrypto

public struct DigestHelper {
    
    public static func sha256String(_ string: String) -> String {
        let data = string.data(using: .utf8)!
        var hash = [UInt8](repeating: 0, count: Int(CC_SHA256_DIGEST_LENGTH))
        var sign = ""
        
        data.withUnsafeBytes {
            _ = CC_SHA256($0.baseAddress, CC_LONG(data.count), &hash)
        }
        
        for byte in hash {
            sign += String(format: "%02x", UInt8(byte))
        }
        
        return sign.lowercased()
    }
    
}