Assert profile key length on sending/receiving

// FREEBIE

SignalServiceKit/src/Devices/OWSContactsOutputStream.m

@@ -4,6 +4,7 @@
 
 #import "OWSContactsOutputStream.h"
 #import "Contact.h"
+#import "Cryptography.h"
 #import "MIMETypeUtil.h"
 #import "NSData+keyVersionByte.h"
 #import "OWSRecipientIdentity.h"
@@ -21,6 +22,7 @@ NS_ASSUME_NONNULL_BEGIN
 {
     OWSAssert(signalAccount);
     OWSAssert(signalAccount.contact);
+    OWSAssert(profileKeyData.length == kAES256_KeyByteLength);
 
     OWSSignalServiceProtosContactDetailsBuilder *contactBuilder = [OWSSignalServiceProtosContactDetailsBuilder new];
     [contactBuilder setName:signalAccount.contact.fullName];

SignalServiceKit/src/Messages/TSMessagesManager.m

@@ -5,6 +5,7 @@
 #import "TSMessagesManager.h"
 #import "ContactsManagerProtocol.h"
 #import "ContactsUpdater.h"
+#import "Cryptography.h"
 #import "MimeTypeUtil.h"
 #import "NSData+messagePadding.h"
 #import "NSDate+millisecondTimeStamp.h"
@@ -515,7 +516,12 @@ NS_ASSUME_NONNULL_BEGIN
     if ([dataMessage hasProfileKey]) {
         NSData *profileKey = [dataMessage profileKey];
         NSString *recipientId = incomingEnvelope.source;
-        [self.profileManager setProfileKeyData:profileKey forRecipientId:recipientId];
+        if (profileKey.length == kAES256_KeyByteLength) {
+            [self.profileManager setProfileKeyData:profileKey forRecipientId:recipientId];
+        } else {
+            OWSFail(
+                @"Unexpected profile key length:%lu on message from:%@", (unsigned long)profileKey.length, recipientId);
+        }
     }
 
     if (dataMessage.hasGroup) {
@@ -1089,7 +1095,7 @@ NS_ASSUME_NONNULL_BEGIN
           OWSFail(@"%@ Failed to trust identity on incoming message from: %@.%d",
               self.tag,
               envelope.source,
-              envelope.sourceDevice);
+              (unsigned int)envelope.sourceDevice);
           return;
       } else {
           OWSProdErrorWEnvelope([OWSAnalyticsEvents messageManagerErrorCorruptMessage], envelope);