53 lines
1.0 KiB
Objective-C
53 lines
1.0 KiB
Objective-C
//
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// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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#import "LegacyChainKey.h"
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#import <CommonCrypto/CommonCrypto.h>
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NS_ASSUME_NONNULL_BEGIN
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@implementation LegacyChainKey
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static NSString *const kCoderKey = @"kCoderKey";
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static NSString *const kCoderIndex = @"kCoderIndex";
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+ (BOOL)supportsSecureCoding
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{
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return YES;
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}
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- (nullable id)initWithCoder:(NSCoder *)aDecoder
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{
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NSData *key = [aDecoder decodeObjectOfClass:[NSData class] forKey:kCoderKey];
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int index = [aDecoder decodeIntForKey:kCoderIndex];
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return [self initWithData:key index:index];
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}
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- (void)encodeWithCoder:(NSCoder *)aCoder
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{
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[aCoder encodeObject:_key forKey:kCoderKey];
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[aCoder encodeInt:_index forKey:kCoderIndex];
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}
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- (instancetype)initWithData:(NSData *)chainKey index:(int)index
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{
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OWSAssert(chainKey.length == 32);
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OWSAssert(index >= 0);
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self = [super init];
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if (self) {
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_key = chainKey;
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_index = index;
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}
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return self;
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}
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@end
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NS_ASSUME_NONNULL_END
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