DBMS_CRYPTO
Oracle® Database PL/SQL Function and Packages and Types Reference
For Oracle 10g: http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_crypto.htm
DBMS_CRYPTO provides an interface to encrypt and decrypt stored data, and can be used in conjunction with PL/SQL programs running network communications. It provides support for several industry-standard encryption and hashing algorithms, including the Advanced Encryption Standard (AES) encryption algorithm. AES has been approved by the National Institute of Standards and Technology (NIST) to replace the Data Encryption Standard (DES)
Source: oracle.com
Oracle Cryptographic Toolkit Programmer’s Guide
Release 2.0.4: http://download.oracle.com/docs/cd/A58617_01/network.804/a54082/ch7plsql.htm
Section 7.2, "Digital Signature"
the following PL/SQL routines to create and verify digital signatures. There are two versions of each routine: one for raw data and another for strings.
"Sign", "Verify" ,"SignDetached" and "VerifyDetached"
Section 7.3, "Hash" – Oracle Hash Value
this pl/sql routines can be used to generate checksums. There are two versions of each routine: one for raw data and another for strings (KeyedHash, Hash)
Section 7.4, "Random Number Generation"
DBMS_UTILITY
using the Package(DBMS_UTILITY) it contains a
function named (GET_HASH_VALUE) to get Oracle Hash Value
http://oradbpedia.com/wiki/DBMS_UTILITY.GET_HASH_VALUE
Doing a PL/SQL hash function
http://stackoverflow.com/questions/5595774/is-there-any-hash-function-in-pl-sql
using select ora_hash … from dual
or using dbms_crypto …
Oracle® Database Security Guide
17 Developing Applications Using Data Encryption for Oracle 10g and above
http://download.oracle.com/docs/cd/B19306_01/network.102/b14266/apdvncrp.htm#DBSEG16000
Stored Data Encryption Using DBMS_CRYPTO
- Securing Sensitive Information
- Principles of Data Encryption
- Stored Data Encryption Using DBMS_CRYPTO
- Data Encryption Challenges
- Example of a Data Encryption Procedure
- Example of AES 256-Bit Data Encryption and Decryption Procedures
- Example of Encryption and Decryption Procedures for BLOB Data
- Oracle Hash Value
- PL/SQL Function Hash Algorithm
MD5 Hashing in Oracle Databases
even MD5 is already broken …
… let’s see how we can use hashing in real-life database administration. When a sensitive piece of information is sent to a different location, you might calculate the hash value beforehand and send it in another shipment or transmission …