...
encryptionKey = "lakdsljkalkjlksdfkl".
...

    ...
    var encryptionKey:String = "lakdsljkalkjlksdfkl";
    var key:ByteArray = Hex.toArray(Hex.fromString(encryptionKey));
    ...
    var aes.ICipher = Crypto.getCipher("aes-cbc", key, padding);
    ...

...
Blob encKey = Blob.valueOf('YELLOW_SUBMARINE');
Blob encrypted = Crypto.encrypt('AES128', encKey, iv, input);
...

...
using (SymmetricAlgorithm algorithm = SymmetricAlgorithm.Create("AES"))
{
  string encryptionKey = "lakdsljkalkjlksdfkl";
  byte[] keyBytes = Encoding.ASCII.GetBytes(encryptionKey);
  algorithm.Key = keyBytes;
  ...
}

...
char encryptionKey[] = "lakdsljkalkjlksdfkl";
...

	...
	<cfset encryptionKey = "lakdsljkalkjlksdfkl" />
	<cfset encryptedMsg = encrypt(msg, encryptionKey, 'AES', 'Hex') />
	...

...
key := []byte("lakdsljkalkjlksd");
block, err := aes.NewCipher(key)
...

  ...
  var crypto = require('crypto');
  var encryptionKey = "lakdsljkalkjlksdfkl";
  var algorithm = 'aes-256-ctr';
  var cipher = crypto.createCipher(algorithm, encryptionKey);
  ...
  

...
{
  "username":"scott"
  "password":"tiger"
}
...

...
NSString encryptionKey = "lakdsljkalkjlksdfkl";
...

...
$encryption_key = 'hardcoded_encryption_key';

//$filter = new Zend_Filter_Encrypt('hardcoded_encryption_key');
$filter = new Zend_Filter_Encrypt($encryption_key);

$filter->setVector('myIV');

$encrypted = $filter->filter('text_to_be_encrypted');
print $encrypted;
...

...
from Crypto.Ciphers import AES
encryption_key = b'_hardcoded__key_'
cipher = AES.new(encryption_key, AES.MODE_CFB, iv)
msg = iv + cipher.encrypt(b'Attack at dawn')
...

require 'openssl'
...
encryption_key = 'hardcoded_encryption_key'
...
cipher = OpenSSL::Cipher::AES.new(256, 'GCM')
cipher.encrypt
...
cipher.key=encryption_key
...

...
let encryptionKey = "YELLOW_SUBMARINE"
...

...
CCCrypt(UInt32(kCCEncrypt),
UInt32(kCCAlgorithmAES128),
UInt32(kCCOptionPKCS7Padding),
"YELLOW_SUBMARINE",
16,
iv,
plaintext,
plaintext.length,
ciphertext.mutableBytes,
ciphertext.length,
&numBytesEncrypted)
...

...
Dim encryptionKey As String
Set encryptionKey = "lakdsljkalkjlksdfkl"
Dim AES As New System.Security.Cryptography.RijndaelManaged
On Error GoTo ErrorHandler
  AES.Key = System.Text.Encoding.ASCII.GetBytes(encryptionKey)
  ...
Exit Sub
...

...
production:
  secret_key_base: 0ab25e26286c4fb9f7335947994d83f19861354f19702b7bbb84e85310b287ba3cdc348f1f19c8cdc08a7c6c5ad2c20ad31ecda177d2c74aa2d48ec4a346c40e
...

...
DATA: lo_hmac TYPE Ref To cl_abap_hmac,
             Input_string type string.

CALL METHOD cl_abap_hmac=>get_instance
  EXPORTING
    if_algorithm = 'SHA3'
    if_key       = 'secret_key'
  RECEIVING
    ro_object    = lo_hmac.

" update HMAC with input
lo_hmac->update( if_data = input_string ).

" finalise hmac
lo_digest->final( ).

...

...
using (HMAC hmac = HMAC.Create("HMACSHA512"))
{
  string hmacKey = "lakdsljkalkjlksdfkl";
  byte[] keyBytes = Encoding.ASCII.GetBytes(hmacKey);
  hmac.Key = keyBytes;
  ...
}

import "crypto/hmac"
...
hmac.New(sha256.New, []byte("secret"))
...

...
CCHmac(kCCHmacAlgSHA256, "secret", 6, plaintext, plaintextLen, &output);
...

import hmac
...
mac = hmac.new("secret", plaintext).hexdigest()
...

...
digest = OpenSSL::HMAC.digest('sha256', 'secret_key', data)
...

...
CCHmac(UInt32(kCCHmacAlgSHA256), "secret", 6, plaintext, plaintextLen, &output)
...

...
var fs:FileStream = new FileStream();
fs.open(new File("config.properties"), FileMode.READ);
var password:String = fs.readMultiByte(fs.bytesAvailable, File.systemCharset);

URLRequestDefaults.setLoginCredentialsForHost(hostname, usr, password);
...

...
string password = regKey.GetValue(passKey).ToString());
NetworkCredential netCred =
           new NetworkCredential(username,password,domain);
...

...
RegQueryValueEx(hkey,TEXT(.SQLPWD.),NULL,
                NULL,(LPBYTE)password, &size);
rc = SQLConnect(*hdbc, server, SQL_NTS, uid,
                SQL_NTS, password, SQL_NTS);
...

...
01  RECORD.
     05  UID              PIC X(10).
     05  PASSWORD         PIC X(10).
...
EXEC CICS
  READ
  FILE('CFG')
  INTO(RECORD)
  RIDFLD(ACCTNO)
  ...
END-EXEC.

EXEC SQL
  CONNECT :UID
  IDENTIFIED BY :PASSWORD
  AT :MYCONN
  USING :MYSERVER
END-EXEC.
...

<cfquery name = "GetCredentials" dataSource = "master">
SELECT   Username, Password
FROM     Credentials
WHERE    DataSource="users"
</cfquery>
...
<cfquery name = "GetSSNs" dataSource = "users"
 username = "#Username#" password = "#Password#">
SELECT   SSN
FROM     Users
</cfquery>
...

...
file, _ := os.Open("config.json")
decoder := json.NewDecoder(file)
decoder.Decode(&values)

request.SetBasicAuth(values.Username, values.Password)
...

    ...
    obj = new XMLHttpRequest();
    obj.open('GET','/fetchusers.jsp?id='+form.id.value,'true','scott','tiger');
    ...

...
NSDictionary *dict= [NSDictionary dictionaryWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Config" ofType:@"plist"]];
NSString *password = [dict valueForKey:@"password"];
[SSZipArchive unzipFileAtPath:zipPath toDestination:destPath overwrite:TRUE password:password error:&error];
...

...
$props = file('config.properties', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$password = $props[0];

$link = mysql_connect($url, $usr, $password);
if (!$link) {
    die('Could not connect: ' . mysql_error());
}
...

...
ip_address := OWA_SEC.get_client_ip;
IF ((OWA_SEC.get_user_id = 'scott') AND
    (OWA_SEC.get_password = 'tiger') AND
    (ip_address(1) = 144) and (ip_address(2) = 25)) THEN
        RETURN TRUE;
ELSE
        RETURN FALSE;
END IF;
...

...
props = os.open('config.properties')
password = props[0]

link = MySQLdb.connect (host = "localhost",
                           user = "testuser",
                           passwd = password,
                           db = "test")
...

require 'pg'
...
passwd = ENV['PASSWD']
...
conn = PG::Connection.new(:dbname => "myApp_production", :user => username, :password => passwd, :sslmode => 'require')

...
val prop = new Properties()
prop.load(new FileInputStream("config.properties"))
val password = prop.getProperty("password")

DriverManager.getConnection(url, usr, password)
...

...
var myDict: NSDictionary?
if let path = NSBundle.mainBundle().pathForResource("Config", ofType: "plist") {
    myDict = NSDictionary(contentsOfFile: path)
}
if let dict = myDict {
    zipArchive.unzipOpenFile(zipPath, password:dict["password"])
}
...

...
Private Declare Function GetPrivateProfileString _
  Lib "kernel32" Alias "GetPrivateProfileStringA" _
  (ByVal lpApplicationName As String, _
  ByVal lpKeyName As Any, ByVal lpDefault As String, _
  ByVal lpReturnedString As String, ByVal nSize As Long, _
  ByVal lpFileName As String) As Long
...
Dim password As String
...
password = GetPrivateProfileString("MyApp", "Password", _
  "", value, Len(value), _
   App.Path & "\" & "Config.ini")
...
con.ConnectionString = "Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=scott;Passwd=" & password &";"
...