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session-ios/SignalServiceKit/tests/Security/OWSFingerprintTest.m

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New fingerprint format In coordination with Desktop and Android, iOS will be using all-numeric fingerprints, aka "Safety Numbers". Furthermore, the concept of verifying one identity and then the other has been removed. Instead we ask users to exchange a single number, or scan a single QR code. These credentials are built by combining the users identities. // FREEBIE
9 years ago
// Created by Michael Kirk on 9/14/16.
// Copyright © 2016 Open Whisper Systems. All rights reserved.
#import "OWSFingerprint.h"
#import <25519/Curve25519.h>
#import <XCTest/XCTest.h>
@interface OWSFingerprintTest : XCTestCase
@end
@implementation OWSFingerprintTest
- (void)testDisplayableTextInsertsSpaces
{
NSString *aliceStableId = @"+13231111111";
NSData *aliceIdentityKey = [Curve25519 generateKeyPair].publicKey;
NSString *bobStableId = @"+14152222222";
NSData *bobIdentityKey = [Curve25519 generateKeyPair].publicKey;
OWSFingerprint *aliceFingerprint = [OWSFingerprint fingerprintWithMyStableId:aliceStableId
myIdentityKey:aliceIdentityKey
theirStableId:bobStableId
theirIdentityKey:bobIdentityKey
Remove phone numbers from scannable QR Code Initially they were there to offer richer error messages when the wrong code was scanned. However, we found that people were posting them publicly, misunderstanding the QR codes to be a kind of personal identifier. For one, this isn't useful because the QR codes, like safety numbers, are unique *per* conversation. So they aren't useful in a generic sense. And secondly this is bad because the QR code contains both parties phone numbers. // FREEBIE
9 years ago
theirName:@"Bob"
New fingerprint format In coordination with Desktop and Android, iOS will be using all-numeric fingerprints, aka "Safety Numbers". Furthermore, the concept of verifying one identity and then the other has been removed. Instead we ask users to exchange a single number, or scan a single QR code. These credentials are built by combining the users identities. // FREEBIE
9 years ago
hashIterations:2];
NSString *displayableText = aliceFingerprint.displayableText;
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(0, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(1, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(2, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(3, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(4, 1)]);
XCTAssertEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(5, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(6, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(7, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(8, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(9, 1)]);
XCTAssertNotEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(10, 1)]);
XCTAssertEqualObjects(@" ", [displayableText substringWithRange:NSMakeRange(11, 1)]);
}
- (void)testTextMatchesReciprocally
{
NSString *aliceStableId = @"+13231111111";
NSData *aliceIdentityKey = [Curve25519 generateKeyPair].publicKey;
NSString *bobStableId = @"+14152222222";
NSData *bobIdentityKey = [Curve25519 generateKeyPair].publicKey;
NSString *charlieStableId = @"+14153333333";
NSData *charlieIdentityKey = [Curve25519 generateKeyPair].publicKey;
OWSFingerprint *aliceFingerprint = [OWSFingerprint fingerprintWithMyStableId:aliceStableId
myIdentityKey:aliceIdentityKey
theirStableId:bobStableId
theirIdentityKey:bobIdentityKey
Remove phone numbers from scannable QR Code Initially they were there to offer richer error messages when the wrong code was scanned. However, we found that people were posting them publicly, misunderstanding the QR codes to be a kind of personal identifier. For one, this isn't useful because the QR codes, like safety numbers, are unique *per* conversation. So they aren't useful in a generic sense. And secondly this is bad because the QR code contains both parties phone numbers. // FREEBIE
9 years ago
theirName:@"Bob"
New fingerprint format In coordination with Desktop and Android, iOS will be using all-numeric fingerprints, aka "Safety Numbers". Furthermore, the concept of verifying one identity and then the other has been removed. Instead we ask users to exchange a single number, or scan a single QR code. These credentials are built by combining the users identities. // FREEBIE
9 years ago
hashIterations:2];
OWSFingerprint *bobFingerprint = [OWSFingerprint fingerprintWithMyStableId:bobStableId
myIdentityKey:bobIdentityKey
theirStableId:aliceStableId
theirIdentityKey:aliceIdentityKey
Remove phone numbers from scannable QR Code Initially they were there to offer richer error messages when the wrong code was scanned. However, we found that people were posting them publicly, misunderstanding the QR codes to be a kind of personal identifier. For one, this isn't useful because the QR codes, like safety numbers, are unique *per* conversation. So they aren't useful in a generic sense. And secondly this is bad because the QR code contains both parties phone numbers. // FREEBIE
9 years ago
theirName:@"Alice"
New fingerprint format In coordination with Desktop and Android, iOS will be using all-numeric fingerprints, aka "Safety Numbers". Furthermore, the concept of verifying one identity and then the other has been removed. Instead we ask users to exchange a single number, or scan a single QR code. These credentials are built by combining the users identities. // FREEBIE
9 years ago
hashIterations:2];
OWSFingerprint *charlieFingerprint = [OWSFingerprint fingerprintWithMyStableId:charlieStableId
myIdentityKey:charlieIdentityKey
theirStableId:aliceStableId
theirIdentityKey:aliceIdentityKey
Remove phone numbers from scannable QR Code Initially they were there to offer richer error messages when the wrong code was scanned. However, we found that people were posting them publicly, misunderstanding the QR codes to be a kind of personal identifier. For one, this isn't useful because the QR codes, like safety numbers, are unique *per* conversation. So they aren't useful in a generic sense. And secondly this is bad because the QR code contains both parties phone numbers. // FREEBIE
9 years ago
theirName:@"Alice"
New fingerprint format In coordination with Desktop and Android, iOS will be using all-numeric fingerprints, aka "Safety Numbers". Furthermore, the concept of verifying one identity and then the other has been removed. Instead we ask users to exchange a single number, or scan a single QR code. These credentials are built by combining the users identities. // FREEBIE
9 years ago
hashIterations:2];
XCTAssertEqualObjects(aliceFingerprint.displayableText, bobFingerprint.displayableText);
XCTAssertNotEqualObjects(aliceFingerprint.displayableText, charlieFingerprint.displayableText);
}
@end