encryptionAdvancing Security with Oracle SHA1 Encryption（oraclesha1）
In highly competitive businesses where both internal and external data privacy and security are paramount, encryption has become an essential tool for helping organizations protect their valuable data assets. Oracle SHA1 encryption, specifically, is an extremely robust and effective algorithm that provides powerful data encryption and authentication capabilities. This article will examine how SHA1 encryption works and discuss some of the benefits it provides.
SHA1 stands for “Secure Hash Algorithm 1”. It is a one-way algorithm that combines a variable sized data input and produces a 160-bit (20-byte) hash as output. The algorithm works by taking a data input and running it through a series of mathematical functions which result in a hash value. The hash value cannot be reversed, meaning that even if you have the hash value, it is impossible to determine the data input used to generate it. This makes SHA1 encryption one of the strongest forms of data encryption available.
The Oracle implementation of SHA1 provides database administrators with a high level of assurance when it comes to data security. SHA1 is used to generate hash values for database objects, server processes, and to generate authentication keys for database users. The beauty of SHA1 is that only a small amount of information is necessary to generate the hashed value, and it is completely infeasible to recreate the input data from the hashed value.
Oracle provides a set of PL/SQL functions which can be used to implement encryption in your database applications. Specifically, the DBMS_CRYPTO package contains two functions which utilize SHA1 encryption: DBMS_CRYPTO.HASH, which generates a hash value of the input data and DBMS_CRYPTO.VERIFY, which verifies if a newly entered data matches the hashed data.
The following is an example of using the DBMS_CRYPTO.HASH function to generate a hash value from a string of characters:
declare
data_in raw(20);
begin
–Generate the SHA1 hash value
data_in := dbms_crypto.hash(src => ‘My super secret password’, typ => dbms_crypto.HASH_SH1);
end;
This function takes the string ‘My super secret password’ and creates a 16-byte SHA1 hash value. This hash can then be stored in the database and used in applications to authenticate users and validate data.
Oracle SHA1 encryption provides organizations with powerful data protection utilizing industry standard practices. By encrypting and validating data as it enters and exits the database, companies can ensure that only valid data is exchanged, and that data is kept secure at all times. SHA1 is a great tool for organizations looking to ensure their data is safe and secure.
