88 lines
2.7 KiB
Swift
88 lines
2.7 KiB
Swift
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//
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// SHA512.swift
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// Befund
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//
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// Created by Irakli Abetschkhrischwili on 29.04.22.
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// Copyright © 2022 MVZ Dr. Stein und Kollegen. All rights reserved.
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//
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import Foundation
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import CryptoKit
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extension Core.Security
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{
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public class SHA512
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{
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public static let VerificatorHashingValue = "U{u)DT~!CV@y9P8U4#,T%KY~D>YRj388"
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/**
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* Encrypts a string value in SHA512 hash
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*
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* @param value - string value that should be encrypted in SHA512 hash
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* @return - Returns SHA512 hash
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*/
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static func Encrypt(value: String) -> String
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{
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let digest = CryptoKit.SHA512.hash(data: value.data(using: .utf8) ?? Data())
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return digest.map {
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String(format: "%02hhx", $0)
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}.joined()
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}
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/**
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* Encrypts a byte array in SHA512 hash
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*
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* @param value - byte array that should be encrypted in SHA512 hash
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* @return - Returns SHA512 hash
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*/
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static func Encrypt(data: Data) -> String
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{
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let digest = CryptoKit.SHA512.hash(data: data)
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return digest.map {
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String(format: "%02hhx", $0)
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}.joined()
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}
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/**
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* Generates SHA512 HMAC Hash with key
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*
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* @param message - message that should be signed by sha512 hmac
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* @param key - key that should be used for signing
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* @return returns SHA512 HMAC
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*/
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static func HMAC(message: Data, key: SymmetricKey) -> String
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{
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let signature = CryptoKit.HMAC<CryptoKit.SHA512>.authenticationCode(for: message, using: key)
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return Data(signature).map { String(format: "%02hhx", $0) }.joined()
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}
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/**
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* Generates SHA512 HMAC Hash with key
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*
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* @param message - message that should be signed by sha512 hmac
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* @param key - key that should be used for signing
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* @return returns SHA512 HMAC
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*/
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static func HMAC(message: Data, key: String) -> String
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{
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let symmetricKey = CryptoKit.SymmetricKey(data: key.data(using: .utf8)!)
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return SHA512.HMAC(message: message, key: symmetricKey)
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}
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/**
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* Validates HMAC with message and key
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*
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* @param hmac - HMAC from the partner
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* @param message - message that should be signed by sha512 hmac
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* @param key - key that should be used for signing
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* @return returns true if success
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*/
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static func isValidAuthenticationCode(hmac: String, message: Data, key: SymmetricKey) -> Bool
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{
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return (hmac == self.HMAC(message: message, key: key))
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}
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}
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}
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