Details
-
New Feature
-
Status: Resolved
-
Major
-
Resolution: Fixed
-
1.10.0
Description
This library contains a collection of cryptography-related functions for Apache Drill. It generally mirrors the crypto functions in MySQL. The package includes:
- *`aes_encrypt()`/ `aes_decrypt()`*: implement encryption and decryption of data using the official AES (Advanced Encryption Standard) algorithm, previously known as “Rijndael.”
`AES_ENCRYPT()` encrypts the string `str` using the key string `key_str` and returns a binary string containing the encrypted output. `AES_DECRYPT()` decrypts the encrypted string `crypt_str` using the key string `key_str` and returns the original cleartext string. If either function argument is NULL, the function returns NULL.
```sql
> SELECT aes_encrypt( 'encrypted_text', 'my_secret_key' ) AS aes FROM (VALUES(1));
---------------------------
| aes |
---------------------------
| JkcBUNAn8ByKWCcVmNrKMA== |
---------------------------
> SELECT aes_encrypt( 'encrypted_text', 'my_secret_key' ) AS encrypted,
aes_decrypt(aes_encrypt( 'encrypted_text', 'my_secret_key' ),'my_secret_key') AS decrypted
FROM (VALUES(1));
------------------------------------------+
| encrypted | decrypted |
------------------------------------------+
| JkcBUNAn8ByKWCcVmNrKMA== | encrypted_text |
------------------------------------------+
```
- *`md5(<text>)`*: Returns the md5 hash of the text. (https://en.wikipedia.org/wiki/MD5)
Usage:
```sql
> select md5( 'testing' ) from (VALUES(1));
-----------------------------------EXPR$0 -----------------------------------
ae2b1fca515949e5d54fb22b8ed95575 -----------------------------------
``` - *`sha(<text>`) / `sha1(<text>)`*: Calculates an SHA-1 160-bit checksum for the string, as described in RFC 3174 (Secure Hash Algorithm). (https://en.wikipedia.org/wiki/SHA-1) The value is returned as a string of 40 hexadecimal digits, or NULL if the argument was NULL. Note that `sha()` and `sha1()` are aliases for the same function.
```sql
> select sha1( 'testing' ) from (VALUES(1));
-------------------------------------------EXPR$0 -------------------------------------------
dc724af18fbdd4e59189f5fe768a5f8311527050 -------------------------------------------
``` - *`sha2(<text>`) / `sha256(<text>)`*: Calculates an SHA-2 256-bit checksum for the string. (https://en.wikipedia.org/wiki/SHA-2) The value is returned as a string of hexadecimal digits, or NULL if the argument was NULL. Note that `sha2()` and `sha256()` are aliases for the same function.
```sql
> select sha2( 'testing' ) from (VALUES(1));
-------------------------------------------------------------------EXPR$0 -------------------------------------------------------------------
cf80cd8aed482d5d1527d7dc72fceff84e6326592848447d2dc0b0e87dfc9a90 -------------------------------------------------------------------
```
Additionally, there are also `sha384(<text>)` and `sha512(<text>)` functions which return SHA-2 hashes with 384 and 512 bit checksums.
Attachments
Issue Links
- links to
