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SQLCipher 1.1.8

Company: ZETETIC LLC
Date Added: October 29, 2013  |  Visits: 174

SQLCipher

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SQLCipher provides you with a fully-encrypted SQLite database. It???*a*?s fast, especially with transactions and indexes; you generally will only see a 5% performance hit. No unencrypted data is written to disk, SQLite???*a*?s page caching allows for decrypted pages to be stored in memory.<br /><br />The SQLCipher program relies on the peer-reviewed OpenSSL library for several encryption requirements including the AES-256 algorithm, pseudo random number generation, and PBKDF2 key derivation.<br /><br />Building<br /><br />Building SQLCipher is almost the same as compiling a regular version of SQLite with two small exceptions:<br /><br /> 1. You must define SQLITE_HAS_CODEC<br /> 2. You need to link against OpenSSL???*a*?s libcrypto with sha256 support compiled in<br /><br />Compiling with static linking: (replace /opt/local/lib with the path to libcrypto.a)<br /><br /> ./configure CFLAGS="-DSQLITE_HAS_CODEC" LDFLAGS="/opt/local/lib/libcrypto.a"<br /> make<br /><br />Compiling with dynamic linking:<br /><br /> ./configure CFLAGS="-DSQLITE_HAS_CODEC -lcrypto"<br /> make<br /><br />Encrypting a database<br /><br />To specify an encryption passphrase for the database you can use a pragma. The passphrase you enter is hashed using sha256 and the result is used as the encryption key for the database.<br /><br />PRAGMA key = 'passphrase';<br /><br />Alternately, you can specify an exact byte sequence using a blob literal. If you use this method it is your responsibility to ensure that the data you provide a 64 character hex string, which will be converted directly to 32 bytes (256 bits) of key data.<br /><br />PRAGMA key = "x'2DD29CA851E7B56E4697B0E1F08507293D761A05CE4D1B628663F411A8086D99'";<br /><br />To re-key a database, the PRAGMA rekey is implemented:<br /><br />PRAGMA rekey = 'newpassphrase';<br /><br />To encrypt a database programatically you can use the sqlite3_key function. The data provided in pKey is converted to an encryption key according to the same rules as PRAGMA key.<br /><br />int sqlite3_key(sqlite3 *db, const void *pKey, int nKey);<br /><br />PRAGMA key or sqlite3_key should be called as the first operation when a database is open.

Requirements: No special requirements
Platforms: Mac, Mac OSX
Keyword: Blazing Broad Crypto Cryptography Derivation Development Level Library Openssl Operations Overhead Platform Practices Provided Reviewed Security Support Works Zeroconfiguration
Users rating: 0/10

License: Freeware Size: 3.61 MB
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