如何在Linux上实现Oracle数据加密

<code>CREATE TABLE confidential_info (
  id NUMBER,
  national_id VARCHAR2(12) ENCRYPT
);</code>

<code>ALTER TABLE current_table ADD (
  new_secure_field VARCHAR2(50) ENCRYPT
);</code>

<code>CREATE TABLESPACE secure_space ENCRYPTION ENCRYPT;</code>

<code>DECLARE
  l_key RAW(128);
  l_text CLOB;
  l_cipher_text RAW(2000);
BEGIN
  l_key := UTL_RAW.CAST_TO_RAW('my_secure_key');
  l_text := 'Hello, world!';
  l_cipher_text := DBMS_CRYPTO.ENCRYPT(UTL_RAW.CAST_TO_RAW(l_text), DBMS_CRYPTO.DES_CBC_PKCS5, l_key);
  DBMS_OUTPUT.PUT_LINE('Cipher Text: ' || RAWTOHEX(l_cipher_text));
END;
/</code>

<code>DECLARE
  l_key RAW(128);
  l_cipher_text RAW(2000);
  l_plain_text RAW(2000);
BEGIN
  l_key := UTL_RAW.CAST_TO_RAW('my_secure_key');
  l_cipher_text := HEXTORAW('...');
  l_plain_text := DBMS_CRYPTO.DECRYPT(l_cipher_text, DBMS_CRYPTO.DES_CBC_PKCS5, l_key);
  DBMS_OUTPUT.PUT_LINE('Plain Text: ' || UTL_I18N.RAW_TO_CHAR(l_plain_text, 'AL32UTF8'));
END;
/</code>

<code>echo "待加密的信息" | openssl enc -aes-256-cbc -a -salt -pass pass:密码</code>

<code>echo "加密的内容" | openssl enc -aes-256-cbc -d -a -salt -pass pass:密码</code>