Contacts don't have safety numbers until they've exchanged keys.

// FREEBIE

Example/TSKitiOSTestApp/TSKitiOSTestApp.xcodeproj/project.pbxproj

@@ -10,6 +10,8 @@
 		308D7DFA789594CEA62740D9 /* libPods-TSKitiOSTestAppTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = C0DC1A83C39CBC09FB2405A3 /* libPods-TSKitiOSTestAppTests.a */; };
 		45046FE01D95A6130015EFF2 /* TSMessagesManagerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 45046FDF1D95A6130015EFF2 /* TSMessagesManagerTest.m */; };
 		450E3C9A1D96DD2600BF4EB6 /* OWSDisappearingMessagesJobTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 450E3C991D96DD2600BF4EB6 /* OWSDisappearingMessagesJobTest.m */; };
+		4516E3E81DD153CC00DC4206 /* TSGroupThreadTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 4516E3E71DD153CC00DC4206 /* TSGroupThreadTest.m */; };
+		4516E3EA1DD1542300DC4206 /* TSContactThreadTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 4516E3E91DD1542300DC4206 /* TSContactThreadTest.m */; };
 		452EE6CF1D4A754C00E934BA /* TSThreadTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 452EE6CE1D4A754C00E934BA /* TSThreadTest.m */; };
 		452EE6D51D4AC43300E934BA /* OWSOrphanedDataCleanerTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 452EE6D41D4AC43300E934BA /* OWSOrphanedDataCleanerTest.m */; };
 		453E1FCF1DA8313100DDD7B7 /* OWSMessageSenderTest.m in Sources */ = {isa = PBXBuildFile; fileRef = 453E1FCE1DA8313100DDD7B7 /* OWSMessageSenderTest.m */; };
@@ -59,6 +61,8 @@
 		36DA6C703F99948D553F4E3F /* Pods-TSKitiOSTestAppTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-TSKitiOSTestAppTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-TSKitiOSTestAppTests/Pods-TSKitiOSTestAppTests.debug.xcconfig"; sourceTree = "<group>"; };
 		45046FDF1D95A6130015EFF2 /* TSMessagesManagerTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = TSMessagesManagerTest.m; path = ../../../tests/Messages/TSMessagesManagerTest.m; sourceTree = "<group>"; };
 		450E3C991D96DD2600BF4EB6 /* OWSDisappearingMessagesJobTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = OWSDisappearingMessagesJobTest.m; path = ../../../tests/Messages/OWSDisappearingMessagesJobTest.m; sourceTree = "<group>"; };
+		4516E3E71DD153CC00DC4206 /* TSGroupThreadTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = TSGroupThreadTest.m; path = ../../../tests/Contacts/TSGroupThreadTest.m; sourceTree = "<group>"; };
+		4516E3E91DD1542300DC4206 /* TSContactThreadTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = TSContactThreadTest.m; path = ../../../tests/Contacts/TSContactThreadTest.m; sourceTree = "<group>"; };
 		452EE6CE1D4A754C00E934BA /* TSThreadTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = TSThreadTest.m; path = ../../../tests/Contacts/TSThreadTest.m; sourceTree = "<group>"; };
 		452EE6D41D4AC43300E934BA /* OWSOrphanedDataCleanerTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = OWSOrphanedDataCleanerTest.m; sourceTree = "<group>"; };
 		453E1FCE1DA8313100DDD7B7 /* OWSMessageSenderTest.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = OWSMessageSenderTest.m; path = ../../../tests/Messages/OWSMessageSenderTest.m; sourceTree = "<group>"; };
@@ -201,6 +205,8 @@
 				459850C01D22C6F2006FFEDB /* PhoneNumberTest.m */,
 				452EE6CE1D4A754C00E934BA /* TSThreadTest.m */,
 				45B700961D9841E400269FFD /* OWSDisappearingMessagesConfigurationTest.m */,
+				4516E3E71DD153CC00DC4206 /* TSGroupThreadTest.m */,
+				4516E3E91DD1542300DC4206 /* TSContactThreadTest.m */,
 			);
 			name = Contacts;
 			sourceTree = "<group>";
@@ -535,6 +541,7 @@
 				45458B751CC342B600A02153 /* SignedPreKeyDeletionTests.m in Sources */,
 				45458B7B1CC342B600A02153 /* CryptographyTests.m in Sources */,
 				45D7243F1D67899F00E0CA54 /* OWSDeviceProvisionerTest.m in Sources */,
+				4516E3E81DD153CC00DC4206 /* TSGroupThreadTest.m in Sources */,
 				45458B791CC342B600A02153 /* TSStoragePreKeyStoreTests.m in Sources */,
 				452EE6D51D4AC43300E934BA /* OWSOrphanedDataCleanerTest.m in Sources */,
 				450E3C9A1D96DD2600BF4EB6 /* OWSDisappearingMessagesJobTest.m in Sources */,
@@ -547,6 +554,7 @@
 				453E1FDB1DA83EFB00DDD7B7 /* OWSFakeContactsUpdater.m in Sources */,
 				453E1FD81DA83E1000DDD7B7 /* OWSFakeContactsManager.m in Sources */,
 				454021ED1D960ABF00F2126D /* OWSDisappearingMessageFinderTest.m in Sources */,
+				4516E3EA1DD1542300DC4206 /* TSContactThreadTest.m in Sources */,
 				45458B771CC342B600A02153 /* TSMessageStorageTests.m in Sources */,
 				45046FE01D95A6130015EFF2 /* TSMessagesManagerTest.m in Sources */,
 				45458B7C1CC342B600A02153 /* MessagePaddingTests.m in Sources */,

src/Contacts/TSThread.h

@@ -64,6 +64,8 @@ NS_ASSUME_NONNULL_BEGIN
  */
 - (BOOL)hasUnreadMessages;
 
+- (BOOL)hasSafetyNumbers;
+
 - (void)markAllAsRead;
 - (void)markAllAsReadWithTransaction:(YapDatabaseReadWriteTransaction *)transaction;
 

src/Contacts/TSThread.m

@@ -84,6 +84,11 @@ NS_ASSUME_NONNULL_BEGIN
     return nil;
 }
 
+- (BOOL)hasSafetyNumbers
+{
+    return NO;
+}
+
 #pragma mark Interactions
 
 /**

src/Contacts/Threads/TSContactThread.m

@@ -3,6 +3,7 @@
 
 #import "TSContactThread.h"
 #import "ContactsUpdater.h"
+#import "TSStorageManager+identityKeyStore.h"
 #import "TextSecureKitEnv.h"
 #import <YapDatabase/YapDatabaseConnection.h>
 #import <YapDatabase/YapDatabaseTransaction.h>
@@ -74,6 +75,11 @@ NS_ASSUME_NONNULL_BEGIN
     return false;
 }
 
+- (BOOL)hasSafetyNumbers
+{
+    return !![self.storageManager identityKeyForRecipientId:self.contactIdentifier];
+}
+
 - (NSString *)name
 {
     return [[TextSecureKitEnv sharedEnv].contactsManager nameStringForPhoneIdentifier:self.contactIdentifier];

src/Security/OWSFingerprint.m

@@ -29,6 +29,9 @@ static uint32_t const OWSFingerprintDefaultHashIterations = 5200;
                   theirIdentityKey:(NSData *)theirIdentityKeyWithoutKeyType
                     hashIterations:(uint32_t)hashIterations
 {
+    NSParameterAssert(theirIdentityKeyWithoutKeyType.length == 32);
+    NSParameterAssert(myIdentityKeyWithoutKeyType.length == 32);
+
     self = [super init];
     if (!self) {
         return self;

src/Storage/TSYapDatabaseObject.h

@@ -3,6 +3,7 @@
 
 #import <Mantle/MTLModel+NSCoding.h>
 
+@class TSStorageManager;
 @class YapDatabaseConnection;
 @class YapDatabaseReadTransaction;
 @class YapDatabaseReadWriteTransaction;
@@ -61,6 +62,9 @@
 - (YapDatabaseConnection *)dbConnection;
 + (YapDatabaseConnection *)dbConnection;
 
+- (TSStorageManager *)storageManager;
++ (TSStorageManager *)storageManager;
+
 /**
  *  Fetches the object with the provided identifier
  *

src/Storage/TSYapDatabaseObject.m

@@ -65,11 +65,21 @@
     return [[self class] dbConnection];
 }
 
+- (TSStorageManager *)storageManager
+{
+    return [[self class] storageManager];
+}
+
 #pragma mark Class Methods
 
 + (YapDatabaseConnection *)dbConnection
 {
-    return [TSStorageManager sharedManager].dbConnection;
+    return [self storageManager].dbConnection;
+}
+
++ (TSStorageManager *)storageManager
+{
+    return [TSStorageManager sharedManager];
 }
 
 + (NSString *)collection

tests/Contacts/TSContactThreadTest.m

@@ -0,0 +1,38 @@
+//  Created by Michael Kirk on 11/7/16.
+//  Copyright © 2016 Open Whisper Systems. All rights reserved.
+
+#import "TSContactThread.h"
+#import "TSStorageManager+identityKeyStore.h"
+#import <XCTest/XCTest.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface TSContactThreadTest : XCTestCase
+
+@property (nonatomic) TSContactThread *contactThread;
+
+@end
+
+@implementation TSContactThreadTest
+
+- (void)setUp
+{
+    self.contactThread = [TSContactThread getOrCreateThreadWithContactId:@"fake-contact-id"];
+    [self.contactThread.storageManager removeIdentityKeyForRecipient:self.contactThread.contactIdentifier];
+}
+
+- (void)testHasSafetyNumbersWithoutRemoteIdentity
+{
+    XCTAssertFalse(self.contactThread.hasSafetyNumbers);
+}
+
+- (void)testHasSafetyNumbersWithRemoteIdentity
+{
+    [self.contactThread.storageManager saveRemoteIdentity:[NSData new]
+                                              recipientId:self.contactThread.contactIdentifier];
+    XCTAssert(self.contactThread.hasSafetyNumbers);
+}
+
+@end
+
+NS_ASSUME_NONNULL_END

tests/Contacts/TSGroupThreadTest.m

@@ -0,0 +1,23 @@
+//  Created by Michael Kirk on 11/7/16.
+//  Copyright © 2016 Open Whisper Systems. All rights reserved.
+
+#import "TSGroupThread.h"
+#import <XCTest/XCTest.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface TSGroupThreadTest : XCTestCase
+
+@end
+
+@implementation TSGroupThreadTest
+
+- (void)testHasSafetyNumbers
+{
+    TSGroupThread *groupThread = [TSGroupThread new];
+    XCTAssertFalse(groupThread.hasSafetyNumbers);
+}
+
+@end
+
+NS_ASSUME_NONNULL_END