keychain/trust/TrustedPeers/TPHash.h

   1 /*
   2  * Copyright (c) 2017 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #import <Foundation/Foundation.h>
  25
  26 NS_ASSUME_NONNULL_BEGIN
  27
  28 /*!
  29  A hash digest algorithm
  30  */
  31 typedef NS_ENUM(NSInteger, TPHashAlgo) {
  32     kTPHashAlgoUnknown = -1,
  33     kTPHashAlgoSHA224 = 0,
  34     kTPHashAlgoSHA256,
  35     kTPHashAlgoSHA384,
  36     kTPHashAlgoSHA512,
  37 };
  38
  39 /*!
  40  A hash prefixed with the name of the digest algorithm, e.g.
  41  "SHA256:xxxx" where the 'x' are 8-bit bytes.
  42  */
  43
  44
  45 @interface TPHashBuilder : NSObject
  46
  47 + (TPHashAlgo)algoOfHash:(NSString *)hash;
  48
  49 - (instancetype)initWithAlgo:(TPHashAlgo)algo;
  50 - (void)resetWithAlgo:(TPHashAlgo)algo;
  51 - (void)updateWithData:(NSData *)data;
  52 - (void)updateWithBytes:(const void *)data len:(size_t)len;
  53 - (NSString *)finalHash;
  54
  55 + (NSString *)hashWithAlgo:(TPHashAlgo)algo ofData:(NSData *)data;
  56 + (NSString *)hashWithAlgo:(TPHashAlgo)algo ofBytes:(const void *)data len:(size_t)len;
  57
  58 @end
  59
  60 NS_ASSUME_NONNULL_END