OTBottledPeerRecord.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
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 * @APPLE_LICENSE_HEADER_END@
 */


#import "OTBottledPeerRecord.h"
#import <corecrypto/cchkdf.h>
#import <corecrypto/ccsha2.h>
#import <corecrypto/ccec.h>

static NSString* OTCKRecordName = @"bp-";

@implementation OTBottledPeerRecord

-(NSString*) recordName
{
    return [OTBottledPeerRecord constructRecordID:self.escrowRecordID escrowSigningSPKI:self.escrowedSigningSPKI];
}

+ (NSString*) constructRecordID:(NSString*)escrowRecordID escrowSigningSPKI:(NSData*)escrowSigningSPKI
{
    const struct ccdigest_info *di = ccsha384_di();
    NSMutableData* result = [[NSMutableData alloc] initWithLength:ccsha384_di()->output_size];
    
    ccdigest(di, [escrowSigningSPKI length], [escrowSigningSPKI bytes], [result mutableBytes]);
    
    NSString* hash = [result base64EncodedStringWithOptions:0];
    
    return [NSString stringWithFormat:@"%@-spid:%@-%@", OTCKRecordName, escrowRecordID, hash];
}

@end