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//
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// MYSymmetricKey.h
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// MYCrypto
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//
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// Created by Jens Alfke on 4/2/09.
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// Copyright 2009 Jens Alfke. All rights reserved.
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//
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#import "MYKey.h"
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#import <CommonCrypto/CommonCryptor.h>
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@interface MYSymmetricKey : MYKey <MYEncryption, MYDecryption>
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/** Initializes a symmetric key from the given key data and algorithm. */
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- (id) initWithKeyData: (NSData*)keyData
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algorithm: (CCAlgorithm)algorithm;
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/** Randomly generates a new symmetric key, using the given algorithm and key-size in bits.
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The key is not added to any keychain; if you want to keep the key persistently, use
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the method of the same name in the MYKeychain class. */
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+ (MYSymmetricKey*) generateSymmetricKeyOfSize: (unsigned)keySizeInBits
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algorithm: (CCAlgorithm)algorithm;
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/** The key's algorithm. */
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@property (readonly) CCAlgorithm algorithm;
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/** The key's size/length, in bits. */
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@property (readonly) unsigned keySizeInBits;
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@end
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