oracledatabase12g.com>altertabletable_namemodifycolumn_name encrypt [using ] [nosalt] ['nomac']; 此外目前列加密不支持外键约束,造成这种限制的原因是每张表都有其唯一的密钥(encryption key);而表空间加密则不存在这种限制,即便某个从属表不在加密表空间上。 1 2 3 4 5 6 7 8 9 10 11 SQL>create...
VALUES (1, 'Alice', l_encrypted_data); END; / 2.3 查询加密数据 使用DBMS_CRYPTO 包对加密数据进行解密: SELECT id, name, DBMS_CRYPTO.DECRYPT(encrypted_column, UTL_RAW.cast_to_raw('my_secret_key'), UTL_RAW.cast_to_raw('my_initialization_vector')) AS decrypted_column FROM my_table; 以...
CREATE OR REPLACE FUNCTION encrypt_column (data IN VARCHAR2) RETURN RAW IS encrypted_data RAW(2000); BEGIN encrypted_data := DBMS_CRYPTO.ENCRYPT( src => UTL_I18N.STRING_TO_RAW(data, ‘AL32UTF8’), key => UTL_I18N.STRING_TO_RAW(‘encryption_key’, ‘AL32UTF8’), typ => DBMS_CRY...
(TDE tablespace encryption encrypts/decrypts data during read/write operations, as opposed to TDE column encryption, which encrypts/decrypts data at the SQL layer. This means that most restrictions that apply to TDE column encryption, such as data type restrictions and index type restrictions, ar...
Table created. SQL> insert into ht3 values(10,'lizx'); 1 row created. SQL> insert into ht3 values(100,'google'); 1 row created. SQL> commit; Commit complete. SQL> alter system set encryption wallet close identified by "roger007~!@"; ...
TransparentData Encryption (TDE:透明数据加密) 说明 Orace TDE 是Orcle 10R2中的一个新特性,其可以用来加密数据文件里的数据,保护从操作系统层面上对数据文件的访问。11g的TDE 在10gR2的基础上增强,允许在表空间级别进行加密。 1.1 11g 中TDE 新增功能 ...
OWNER TABLE_NAME COLUMN_NAME ENCRYPTION_ALG SAL INTEGRITY_AL --- --- --- --- --- --- EYGLE TDE DATA AES 192 bits key YES SHA-1 如果关闭Wallet,则加密列不可访问: SQL> select * from eygle.tde; select * from eygle.tde * ERROR at line...
accounts.dmp directory=tmp_dirremap_data=accounts.acc_ssn:pkg_mask.fn_mask_ssn 该参数将重映射函数 fn_mask_ssn 中生成的值放到 pkg_mask 程序包中。注意该参数的格式。它遵循以下模式: [<SchemaName>.]<TableName>.<ColumnName>:[<SchemaName>.]<PackageName>.<FunctionName> ...
In Oracle Database 10g, Oracle introduced the new Transparent Data Encryption (TDE) feature, which let you easily encrypt a column’s data in a table. The encryption is called transparent because the Oracle database takes care of all the encryption and decryption details, with no need for you...
2. Per Oracle Database 21c "Advanced Security Guide" section 5.4: "If you encrypt a table column without specifying an algorithm, then the column is encrypted using the AES192 algorithm. TDE adds salt to plaintext before encrypting it. Adding salt makes it harder for attackers to steal data...