mirror of
https://github.com/oxen-io/session-ios.git
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ccb4a88742
git remote add ssk ../SignalServiceKit git remote update git merge -s ours --allow-unrelated-histories --no-commit ssk/master git read-tree --prefix=SignalServiceKit -u ssk/master git commit
44 lines
1.5 KiB
Objective-C
Executable file
44 lines
1.5 KiB
Objective-C
Executable file
//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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NS_ASSUME_NONNULL_BEGIN
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@interface Cryptography : NSObject
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typedef NS_ENUM(NSInteger, TSMACType) {
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TSHMACSHA1Truncated10Bytes = 1,
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TSHMACSHA256Truncated10Bytes = 2,
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TSHMACSHA256AttachementType = 3
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};
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+ (NSMutableData *)generateRandomBytes:(NSUInteger)numberBytes;
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#pragma mark SHA and HMAC methods
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// Full length SHA256 digest for `data`
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+ (NSData *)computeSHA256Digest:(NSData *)data;
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// Truncated SHA256 digest for `data`
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+ (NSData *)computeSHA256Digest:(NSData *)data truncatedToBytes:(NSUInteger)truncatedBytes;
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+ (NSString *)truncatedSHA1Base64EncodedWithoutPadding:(NSString *)string;
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+ (NSString *)computeSHA1DigestForString:(NSString *)input;
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+ (NSData *)computeSHA256HMAC:(NSData *)dataToHMAC withHMACKey:(NSData *)HMACKey;
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+ (NSData *)computeSHA1HMAC:(NSData *)dataToHMAC withHMACKey:(NSData *)HMACKey;
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+ (NSData *)truncatedSHA1HMAC:(NSData *)dataToHMAC withHMACKey:(NSData *)HMACKey truncation:(NSUInteger)bytes;
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+ (NSData *)decryptAppleMessagePayload:(NSData *)payload withSignalingKey:(NSString *)signalingKeyString;
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#pragma mark encrypt and decrypt attachment data
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+ (NSData *)decryptAttachment:(NSData *)dataToDecrypt withKey:(NSData *)key digest:(nullable NSData *)digest;
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+ (NSData *)encryptAttachmentData:(NSData *)attachmentData
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outKey:(NSData *_Nonnull *_Nullable)outKey
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outDigest:(NSData *_Nonnull *_Nullable)outDigest;
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@end
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NS_ASSUME_NONNULL_END
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