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ASF GitHub Bot commented on DRILL-5634: --------------------------------------- Github user arina-ielchiieva commented on a diff in the pull request: https://github.com/apache/drill/pull/865#discussion_r125244592 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/impl/CryptoFunctions.java --- @@ -0,0 +1,315 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * <p/> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p/> + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.drill.exec.expr.fn.impl; + +import io.netty.buffer.DrillBuf; +import org.apache.drill.exec.expr.DrillSimpleFunc; +import org.apache.drill.exec.expr.annotations.FunctionTemplate; +import org.apache.drill.exec.expr.annotations.Output; +import org.apache.drill.exec.expr.annotations.Param; +import org.apache.drill.exec.expr.annotations.Workspace; +import org.apache.drill.exec.expr.holders.VarCharHolder; + +import javax.inject.Inject; + +public class CryptoFunctions{ + static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CryptoFunctions.class); + + private CryptoFunctions() {} + + @FunctionTemplate( + name = "md5", + scope = FunctionTemplate.FunctionScope.SIMPLE, + nulls = FunctionTemplate.NullHandling.NULL_IF_NULL + ) + public static class md5Function implements DrillSimpleFunc { --- End diff -- I guess according to java naming convention class names should start with letter in upper case. Please correct here and in classes below. > Add Crypto and Hash Functions > ----------------------------- > > Key: DRILL-5634 > URL: https://issues.apache.org/jira/browse/DRILL-5634 > Project: Apache Drill > Issue Type: New Feature > Components: Functions - Drill > Affects Versions: 1.10.0 > Reporter: Charles Givre > Labels: doc-impacting > Fix For: 1.11.0 > > > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029)