43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
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//
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// Encryption.h
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// PIATunnel
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//
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// Created by Davide De Rosa on 3/3/17.
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// Copyright © 2018 London Trust Media. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import "ZeroingData.h"
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@protocol DataPathEncrypter;
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@protocol DataPathDecrypter;
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// WARNING: dest must be able to hold ciphertext
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@protocol Encrypter
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- (void)configureEncryptionWithCipherKey:(nonnull ZeroingData *)cipherKey hmacKey:(nonnull ZeroingData *)hmacKey;
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- (int)overheadLength;
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- (int)extraLength;
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- (NSData *)encryptData:(nonnull NSData *)data offset:(NSInteger)offset extra:(const uint8_t *)extra error:(NSError **)error;
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- (BOOL)encryptBytes:(nonnull const uint8_t *)bytes length:(NSInteger)length dest:(nonnull uint8_t *)dest destLength:(nonnull NSInteger *)destLength extra:(const uint8_t *)extra error:(NSError **)error;
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- (nonnull id<DataPathEncrypter>)dataPathEncrypter;
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@end
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// WARNING: dest must be able to hold plaintext
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@protocol Decrypter
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- (void)configureDecryptionWithCipherKey:(nonnull ZeroingData *)cipherKey hmacKey:(nonnull ZeroingData *)hmacKey;
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- (int)overheadLength;
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- (int)extraLength;
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- (NSData *)decryptData:(nonnull NSData *)data offset:(NSInteger)offset extra:(const uint8_t *)extra error:(NSError **)error;
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- (BOOL)decryptBytes:(nonnull const uint8_t *)bytes length:(NSInteger)length dest:(nonnull uint8_t *)dest destLength:(nonnull NSInteger *)destLength extra:(const uint8_t *)extra error:(NSError **)error;
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- (nonnull id<DataPathDecrypter>)dataPathDecrypter;
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@end
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