SQLCipher v4 incompatibility #20
Description
Hi !
While troubleshooting an issue (Willena/sqlite-jdbc-crypt#25) on my repo, I came to the conclusion that there is something wrong when using SQLCipher and SQLiteMC together. SQLiteMC cannot read databases created with SQLCipher and SQLCipher cannot read database created by SQLiteMC.
I did some tests myself with a fresh build of SQLCipher and using 1.0.1 binaries of SQLiteMC.
Here is the scenario I used:
- I created a new db named
fromCipher.dbusing SQLCipher:
SQLite version 3.33.0 2020-08-14 13:23:32 (SQLCipher 4.4.2 community)
sqlite> .open fromCipher.db
sqlite> pragma cipher_default_settings;
PRAGMA cipher_default_kdf_iter = 256000;
PRAGMA cipher_default_page_size = 4096;
PRAGMA cipher_default_use_hmac = 1;
PRAGMA cipher_default_plaintext_header_size = 0;
PRAGMA cipher_default_hmac_algorithm = HMAC_SHA512;
PRAGMA cipher_default_kdf_algorithm = PBKDF2_HMAC_SHA512;
sqlite> pragma key='abc';
ok
sqlite> CREATE TABLE "T1" (
"Field1" INTEGER,
"Field2" INTEGER,
"Field3" INTEGER,
"Field4" INTEGER
);
- I created a "SQLCipher" database named
fromMC.dbwith SQLiteMC
SQLite version 3.33.0 2020-08-14 13:23:32
sqlite> .open fromMC.db
sqlite> pragma cipher = 'sqlcipher';
sqlcipher
sqlite> pragma kdf_iter = 256000;
256000
sqlite> pragma fast_kdf_iter = 2;
2
sqlite> pragma hmac_use = 1;
1
sqlite> pragma hmac_pgno = 1;
1
sqlite> pragma hmac_salt_mask = 0x3a;
58
sqlite> pragma legacy = 4;
4
sqlite> pragma legacy_page_size = 4096;
4096
sqlite> pragma kdf_algorithm = 2;
2
sqlite> pragma hmac_algorithm = 2;
2
sqlite> pragma plaintext_header_size = 0;
0
sqlite> pragma key = 'abc';
ok
sqlite> CREATE TABLE "T1" (
...> "Field1"INTEGER,
...> "Field2"INTEGER,
...> "Field3"INTEGER,
...> "Field4"INTEGER
...> );
- Try to open fromMC.db with SQLCipher (it fails)
SQLite version 3.33.0 2020-08-14 13:23:32 (SQLCipher 4.4.2 community)
sqlite> .open fromMC.db
sqlite> pragma cipher_default_settings;
PRAGMA cipher_default_kdf_iter = 256000;
PRAGMA cipher_default_page_size = 4096;
PRAGMA cipher_default_use_hmac = 1;
PRAGMA cipher_default_plaintext_header_size = 0;
PRAGMA cipher_default_hmac_algorithm = HMAC_SHA512;
PRAGMA cipher_default_kdf_algorithm = PBKDF2_HMAC_SHA512;
sqlite> pragma key='abc';
ok
sqlite> select 1 from sqlite_master;
Error: file is not a database
- Try to open fromCipher.db with SQLiteMC (it fails)
SQLite version 3.33.0 2020-08-14 13:23:32 (SQLCipher 4.4.2 community)
sqlite> .open fromCipher.db
sqlite> pragma cipher = 'sqlcipher';
sqlcipher
sqlite> pragma kdf_iter = 256000;
256000
sqlite> pragma fast_kdf_iter = 2;
2
sqlite> pragma hmac_use = 1;
1
sqlite> pragma hmac_pgno = 1;
1
sqlite> pragma hmac_salt_mask = 0x3a;
58
sqlite> pragma legacy = 4;
4
sqlite> pragma legacy_page_size = 4096;
4096
sqlite> pragma kdf_algorithm = 2;
2
sqlite> pragma hmac_algorithm = 2;
2
sqlite> pragma plaintext_header_size = 0;
0
sqlite> pragma key = 'abc';
ok
sqlite> select 1 from sqlite_master;
Error: file is not a database
Both test databases files are available here test_databases.zip
Any thoughts or ideas ?
Note : SQLite Version is 3.33.0, SQLiteMC version is 1.0.1, SQLCipher is 4.4.2
Note : SQLiteMC can write and read to it own created database as well as SQLCipher.
Note : Bug is also present in latest version (SQLiteMC 1.1.0)
This issue prevent users coming from SQLite tools like DB Browser (which support SQLCipher) to use their database with their java code (in the use case of my JDBC connector).