Build fails with SQLCipher due to calls not yet available in SQLCipher

[jimt2000]

commit 336faa1 on Oct 8 added calls to sqlite3_expanded_sql and sqlite3_trace_v2.

These are available in sqlite3 version 3.14, but not earlier versions. If you use SQLCipher upon which SQLiteCipher.swift is dependent, you get link errors because the version of sqlite3 used by SQLCipher is earlier than 3.14.

[jberkel]

I've got no experience with SQLCipher. Will it eventually catch up with a more recent version of SQLite? Not sure what would be a good solution in this case. More conditionals would make the build even more complicated.

[leminhtuan2015]

I am sorry, I am a new dev. May you please help me how can I use SQLiteCipher.swift (https://github.com/stephencelis/SQLiteCipher.swift)

My purpose is make a key for access my sqlite database, I want to prevent someone access to my database.

I am waiting for your help or any suggestion about this problem.

Thank sir so much.

[jberkel]

@leminhtuan2015 SQLiteCipher is deprecated. The upcoming 0.11.1 release of SQLite.swift will make the integration easier (at least if you use CocoaPods in your project).

[leminhtuan2015]

@jberkel Thank sir so much, I am waiting for the upcoming 0.11.1 release so that I can use SQLiteCipher.swift , and by the way, I am using your SQLite.swift by CocoaPods, that is so great

Thank you sir!

[jberkel]

It's been released now, please give it a try:

https://github.com/stephencelis/SQLite.swift/blob/master/Documentation/Index.md#using-sqliteswift-with-sqlcipher

[leminhtuan2015]

@jberkel Hello sir, I am trying your sqlcipher function:

let db = try Connection("path/to/db.sqlite3")
try db.key("secret")

But i seem not working for me, SO please give me some ideal.

I already have a "encrypted.sqlite" and I encrypted my sqlite file by using sqlcipher on MacOs terminal, the method I do is that:

https://discuss.zetetic.net/t/how-to-encrypt-a-plaintext-sqlite-database-to-use-sqlcipher-and-avoid-file-is-encrypted-or-is-not-a-database-errors/868

I use "encrypted.sqlite" in my IOS swift app, when I connect to the "encrypted.sqlite" by using "try db.key("secret")" nothing happen, I cannot connect to database anymore

Please help. Thank Sir so much.

[jberkel]

@leminhtuan2015 I've added some tests to make sure this functionality works as expected.

Have a look at
https://github.com/stephencelis/SQLite.swift/blob/master/SQLiteTests/CipherTests.swift#L75

Do you use the exact same passphrase for encrypting and decrypting?

Also make sure to read the API docs at:
https://github.com/stephencelis/SQLite.swift/blob/master/SQLite/Extensions/Cipher.swift

[leminhtuan2015]

Hi Sir.

• I make sure the key for encrypting sqlite file and the key when I call "db.key("mykey")" totally the same
• I make sure I already install pod 'SQLite.swift/SQLCipher', '~> 0.11.1' last version

Below are all the things I did, Please tell me if I wrong anything.

Step 1: Create a "encrypted.sqlite" in the terminal of Mac OSX (macOS Sierra 10.12.1)

$ sqlcipher encrypted.sqlite
sqlite> pragma key = 'mykey';
sqlite> CREATE TABLE word (id TEXT, w TEXT, m Text);
sqlite> INSERT INTO word (id,w,m) VALUES ('1','1','world');

=> After that I got a "encrypted.sqlite" file.

Step 2: Copy "encrypted.sqlite" to my bundle of IOS Swift app.

Step 3: Use SQLite.swift/SQLCipher

do{
  let db = try Connection("\(Constant.DOCUMENT_PATH)/\(Config.DATABASE_NAME)")
  print("Connected ok")
  try! db.key("mykey")
  print("key ok")
  let wordFilter = wordTable
    .select(idExpression, wordExpression, meanExpression)
    .filter(wordExpression.like("\(textSearch)"))
    .limit(10)
} catch {
    print("Error")
}

• I use the exact same passphrase for encrypting and decrypting : "mykey"

NOTICE: "(Constant.DOCUMENT_PATH)/(Config.DATABASE_NAME)" is the path to "encrypted.sqlite" and my everything work well before I use pod 'SQLite.swift/SQLCipher',

And now when run project i just only see the log in console of XCode is "Connected ok" and I Can NOT see "key ok" neither "Error"

Please give me some ideal, Thank Sir so much.

[jberkel]

Strange, looks like you've done everything correctly – if there's a problem decrypting the database the code should throw.

Maybe try stepping through the code in a debugger? I would also remove the do ... catch since it could obscure the error somehow.

[leminhtuan2015]

Hi Sir. I am so sorry. Because of I run my project on simulator so that I got above problem.
I do not know why on simulator nothing happen when i call try db.key("mykey")
And now i run my project on iphone device and I got error ""The operation couldn\342\200’t be completed. (SQLite.Result error 0.)

Please give me some advances, Thank sir so much

[jberkel]

Can you post the full error output?

[leminhtuan2015]

Hi Sir. I am new at Swift. The way i did is that :

do{
let db = try Connection("(Constant.DOCUMENT_PATH)/(Config.DATABASE_NAME)")
print("Connected Ok")
try db.key("mykey") // Throw error here
print("Key Ok")
....
} catch let error as NSError {
print(error)
}

And i got all in console:

Connected Ok
Error Domain=SQLite.Result Code=0 "(null)"

[jberkel]

Remove the the catch statement, and run again