keychain/ot/OTPrivateKey+SF.m

   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 #if OCTAGON
  25
  26 #import "OTPrivateKey+SF.h"
  27
  28 #import "OTEscrowKeys.h"
  29 #import <SecurityFoundation/SFKey_Private.h>
  30
  31 @implementation OTPrivateKey (SecurityFoundation)
  32
  33 + (instancetype)fromECKeyPair:(SFECKeyPair *)keyPair
  34 {
  35     OTPrivateKey *pk = [OTPrivateKey new];
  36     pk.keyType = OTPrivateKey_KeyType_EC_NIST_CURVES;
  37     pk.keyData = keyPair.keyData;
  38     return pk;
  39 }
  40
  41 - (nullable SFECKeyPair *)asECKeyPair
  42 {
  43     if (self.keyType != OTPrivateKey_KeyType_EC_NIST_CURVES) {
  44         return nil;
  45     }
  46     return [[SFECKeyPair alloc] initWithSecKey:[OTEscrowKeys createSecKey:self.keyData]];
  47 }
  48
  49 @end
  50
  51 #endif