SFECPublicKey+SPKI.m   [plain text]

/*
 * Copyright (c) 2017 Apple Inc. All Rights Reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */

#if OCTAGON

#import "SFPublicKey+SPKI.h"

#import <Security/SecKeyPriv.h>
#import <SecurityFoundation/SFKey_Private.h>

@implementation SFECPublicKey (OTSubjectPublicKeyInfo)

- (NSData *)asSPKI
{
    NSDictionary *keyAttributes = @{
                                    (__bridge id)kSecAttrKeyClass : (__bridge id)kSecAttrKeyClassPublic,
                                    (__bridge id)kSecAttrKeyType : (__bridge id)kSecAttrKeyTypeEC,
                                    };
    SecKeyRef seckey = SecKeyCreateWithData((__bridge CFDataRef)self.keyData, (__bridge CFDictionaryRef)keyAttributes, NULL);
    NSData *spki = CFBridgingRelease(SecKeyCopySubjectPublicKeyInfo(seckey));
    CFRelease(seckey);
    return spki;
}

+ (instancetype)fromSPKI:(NSData *)spki
{
    SecKeyRef seckey = SecKeyCreateFromSubjectPublicKeyInfoData(NULL, (__bridge CFDataRef)spki);
    return [[SFECPublicKey alloc] initWithSecKey:seckey];
}

@end

#endif