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CREATE ENCRYPT RULE

Description

The CREATE ENCRYPT RULE syntax is used to create a encrypt rule.

Syntax

CreateEncryptRule ::=
  'CREATE' 'ENCRYPT' 'RULE' ifNotExists? encryptDefinition (',' encryptDefinition)*

ifNotExists ::=
  'IF' 'NOT' 'EXISTS'

encryptDefinition ::=
  ruleName '(' 'COLUMNS' '(' columnDefinition (',' columnDefinition)*  ')' (',' 'QUERY_WITH_CIPHER_COLUMN' '=' ('TRUE' | 'FALSE'))? ')'

columnDefinition ::=
  '(' 'NAME' '=' columnName (',' 'PLAIN' '=' plainColumnName)? ',' 'CIPHER' '=' cipherColumnName (',' 'ASSISTED_QUERY_COLUMN' '=' assistedQueryColumnName)? (',' 'LIKE_QUERY_COLUMN' '=' likeQueryColumnName)? ',' encryptAlgorithmDefinition (',' assistedQueryAlgorithmDefinition)? (',' likeQueryAlgorithmDefinition)? ')' 

encryptAlgorithmDefinition ::=
  'ENCRYPT_ALGORITHM' '(' 'TYPE' '(' 'NAME' '=' encryptAlgorithmType (',' propertiesDefinition)? ')'

assistedQueryAlgorithmDefinition ::=
  'ASSISTED_QUERY_ALGORITHM' '(' 'TYPE' '(' 'NAME' '=' encryptAlgorithmType (',' propertiesDefinition)? ')'

likeQueryAlgorithmDefinition ::=
  'LIKE_QUERY_ALGORITHM' '(' 'TYPE' '(' 'NAME' '=' encryptAlgorithmType (',' propertiesDefinition)? ')'

propertiesDefinition ::=
  'PROPERTIES' '(' key '=' value (',' key '=' value)* ')'

tableName ::=
  identifier

columnName ::=
  identifier

plainColumnName ::=
  identifier

cipherColumnName ::=
  identifier

assistedQueryColumnName ::=
  identifier

likeQueryColumnName ::=
  identifier

encryptAlgorithmType ::=
  string

key ::=
  string

value ::=
  literal

Supplement

  • PLAIN specifies the plain column, CIPHER specifies the cipher column, ASSISTED_QUERY_COLUMN specifies the assisted query column，LIKE_QUERY_COLUMN specifies the like query column;
  • encryptAlgorithmType specifies the encryption algorithm type, please refer to Encryption Algorithm;
  • Duplicate ruleName will not be created;
  • ifNotExists clause used for avoid Duplicate encrypt rule error.

Example

Create a encrypt rule

CREATE ENCRYPT RULE t_encrypt (
COLUMNS(
(NAME=user_id,PLAIN=user_plain,CIPHER=user_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='AES',PROPERTIES('aes-key-value'='123456abc')))),
(NAME=order_id, CIPHER =order_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='MD5')))
),QUERY_WITH_CIPHER_COLUMN=true),
t_encrypt_2 (
COLUMNS(
(NAME=user_id,PLAIN=user_plain,CIPHER=user_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='AES',PROPERTIES('aes-key-value'='123456abc')))),
(NAME=order_id, CIPHER=order_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='MD5')))
), QUERY_WITH_CIPHER_COLUMN=FALSE);

Create a encrypt rule with ifNotExists clause

CREATE ENCRYPT RULE t_encrypt IF NOT EXISTS (
COLUMNS(
(NAME=user_id,PLAIN=user_plain,CIPHER=user_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='AES',PROPERTIES('aes-key-value'='123456abc')))),
(NAME=order_id, CIPHER =order_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='MD5')))
),QUERY_WITH_CIPHER_COLUMN=true),
t_encrypt_2 (
COLUMNS(
(NAME=user_id,PLAIN=user_plain,CIPHER=user_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='AES',PROPERTIES('aes-key-value'='123456abc')))),
(NAME=order_id, CIPHER=order_cipher,ENCRYPT_ALGORITHM(TYPE(NAME='MD5')))
), QUERY_WITH_CIPHER_COLUMN=FALSE);

Reserved words

CREATE, ENCRYPT, RULE, COLUMNS, NAME, CIPHER, PLAIN, QUERY_WITH_CIPHER_COLUMN, TYPE, TRUE, FALSE