nowbotstorm

• Decrypt Sqlite Database File
• Sqlite Studio

I have developed application using SQLCipher in android. It is secure way to protect your Database file into application. It is working fine for encryption, but i want decrypt the encrypted DB file and want to look into SQLite Browser.

Actually I have lots of table and its data available. Now if i want to look into the encrypted DB data, there is no way to look into it (Only Logs available to view data).But Using SQLite Browser i can't see it.

I am using 'info.guardianproject.database.sqlcipher.SQLiteDatabase'

I have tried many ways to decrypt it and look into SQLite Browser but it is giving error 'An Error Occured : file is not a sqlite3 database'.

Note:- Let’s check, which version of encryption is in our database files. Just, look at the message database (which you have copied to Chat folder), msgstore.db.crypt5, msgstore.db.crypt8, msgstore.db.crypt2. Numbers will define your database version. If, you database version Crypt, Crypt5 is of version. Then select first option of Omni-crypt. If, database version is Encrypt6, Encrpt7, Encrpt8. Mar 29, 2014  Have WhatsApp Backup File (.db.crypt) on computer and now want to decrypt and read chat Messages from the backup file? This step by step guide shows you how to extract Messages from WhatsApp Backup file on Android onto Backuptrans local database. Then you can view, export, print or transfer messages on computer.

Decrypt Sqlite Database File

can any one help me out for decryption of the encrypted DB file.

OR should i copy the encrypt the DB file and decrypt it using 'info.guardianproject.database.sqlcipher.SQLiteDatabase' and use it to view all of the tables.

Thanks,

Mishal Shah

DeveloperDeveloper

5 Answers

I resolved this by using pulling the database from the device and decrypting it. The script below will generata a decrypted database file. This file can be opened with a SQLite-viewer.

Should be in your PATH:

Replace in script:

• com.example with your packagename
• database.db with name databasefile
• encryption_key with encryption password

Note:Device should be rooted

TobrunTobrun

You need to use a SQLite utility that has the SQLCipher extensions as part of it. You can download and build the SQLCipher code on Linux, which should give you a sqlite3 utility that you can use to access the database (with the appropriate PRAGMA statements for specifying the passphrase, etc.).

CommonsWareCommonsWare

The decrypt.sh script helped me for a while. But after sometime, I found that SQLiteManager started supporting SQLCipher encrypted databases. It has a pretty user interface. Even though it's not free and you still need to pull the database file from device, I think it's good to try.

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In your android application code after

dbHelper.getReadableDatabase(dbKey);database file will be decrypted. by writing file copy code copy database file to some external sd card file path and open it with any sqllite tool

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Crypt12 Decryptor

Tool for decrypting WhatsApp Crypt12 databases.

Files required:

• crypt12 db.
• key file.

Java

Usage

java -classpath 'lib/bc.jar:.' Decrypt msgstore.db.crypt12 key

Compile

javac -classpath 'lib/bc.jar:.' Decrypt.java

PHP

Usage

php decrypt.php msgstore.db.crypt12 key

AES GCM

Inputs and Outputs to GCM

Sqlite Studio

GCM has two operations, authenticated encryption and authenticated decryption. The authenticated encryption operation has four inputs, each of which is a bit string:

• A secret key K, whose length is appropriate for the underlying block cipher.
• An initialization vector IV, that can have any number of bits between 1 and 2^64. For a fixed value of key, each IV value must be distinct, but need not have equal lengths. 96-bit IV values can be processed more efficiently, so that length is recommended for situations in which efficiency is critical.
• A plaintext P, which can have any number of bits between 0 and 2^39 - 256.
• Additional authenticated data (AAD), which is denoted as A. This data is authenticated, but not encrypted, and can have any number of bits between 0 and 2^64.

The There two Outputs

• A ciphertext C whose length is exactly that of the plaintext P.
• An authentication tag T, whose length can be any value between 0 and 128. The length of the tag is denoted as t.

The authenticated decryption operation has five inputs: K, IV, C, A and T. It has only a single output, either the plaintext value P or a special symbol 'FAIL' that indicates that the inputs are not authentic. A ciphertext C, initialization vector IV, additional authenticated data A and tag T are authentic for key K when they are generated with the encrypt operation with inputs K, IV, A and P, for some plaintext P. The authenticated decrypt operation will, with high probability, return 'FAIL' when its inputs were not created by the encrypt operation with the identical key.The additional authenticated data A is used to protect information that needs to be authenticated, but which must be left unencrypted. When using GCM to secure network protocol, this input could include addresses, ports, sequence numbers, protocol version numbers, and other fields that indicate how the plaintext should be handled, forwarded, or processed. In many situations, its desirable to authenticate these fields, though they must be left in the clear for the network to function properly. when this data is included in the AAD, authentication is provided without copying the data into the ciphertext.The primary purpose of the IV is to be a nonce, that is, to be distinct for each invocation of the encryption operation for a fixed key. It is acceptable for the IV to be generated randomly, as long as the distinctness of the IV is highly likely. The IV is authenticated, and it is not necessary to include it in in the AAD field.

Decryption:

The authenticated decryption operation is similar to the encrypt operation, but with the order of the hash step and encrypt step reversed. The equations are as follows:

The authenticated decryption operation

Using GCM to decrypt and verify the authenticity of a packet

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Reference: http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-spec.pdf