diff --git a/www/admin/class_test.db.encryption.php b/www/admin/class_test.db.encryption.php
new file mode 100644
index 00000000..6d7701e2
--- /dev/null
+++ b/www/admin/class_test.db.encryption.php
@@ -0,0 +1,125 @@
+<?php // phpcs:ignore warning
+
+/**
+ * @phan-file-suppress PhanTypeSuspiciousStringExpression
+ */
+
+declare(strict_types=1);
+
+// turn on all error reporting
+error_reporting(E_ALL | E_ERROR | E_WARNING | E_PARSE | E_COMPILE_ERROR);
+
+ob_start();
+
+// basic class test file
+define('USE_DATABASE', true);
+// sample config
+require 'config.php';
+// define log file id
+$LOG_FILE_ID = 'classTest-db-query-encryption';
+ob_end_flush();
+
+// use CoreLibs\Debug\Support;
+use CoreLibs\Security\SymmetricEncryption;
+use CoreLibs\Security\CreateKey;
+use CoreLibs\Create\Hash;
+use CoreLibs\Debug\Support;
+
+$log = new CoreLibs\Logging\Logging([
+	'log_folder' => BASE . LOG,
+	'log_file_id' => $LOG_FILE_ID,
+	'log_per_date' => true,
+]);
+// db connection and attach logger
+$db = new CoreLibs\DB\IO(DB_CONFIG, $log);
+$db->log->debug('START', '=============================>');
+
+$PAGE_NAME = 'TEST CLASS: DB QUERY ENCRYPTION';
+print "<!DOCTYPE html>";
+print "<html><head><title>" . $PAGE_NAME . "</title></head>";
+print "<body>";
+print '<div><a href="class_test.php">Class Test Master</a></div>';
+print '<div><h1>' . $PAGE_NAME . '</h1></div>';
+
+// encryption key
+$key = CreateKey::generateRandomKey();
+print "Secret Key: " . $key . "<br>";
+
+// test text
+$text_string = "I a some deep secret";
+//
+$crypt = new SymmetricEncryption($key);
+$encrypted = $crypt->encrypt($text_string);
+$string_hashed = Hash::hashStd($text_string);
+$string_hmac = Hash::hashHmac($text_string, $key);
+$decrypted = $crypt->decrypt($encrypted);
+
+print "String: " . $text_string . "<br>";
+print "Encrypted: " . $encrypted . "<br>";
+print "Hashed: " . $string_hashed . "<br>";
+print "Hmac: " . $string_hmac . "<br>";
+
+$db->dbExecParams(
+	<<<SQL
+	INSERT INTO test_encryption (
+		-- for compare
+		plain_text,
+		-- via php encryption
+		hash_text, hmac_text, crypt_text,
+		-- -- in DB encryption
+		pg_digest_bytea, pg_digest_text,
+		pg_hmac_bytea, pg_hmac_text,
+		pg_crypt_bytea, pg_crypt_text
+	) VALUES (
+		$1,
+		$2, $3, $4,
+		digest($1::VARCHAR, $5),
+		encode(digest($1, $5), 'hex'),
+		hmac($1, $6, $5),
+		encode(hmac($1, $6, $5), 'hex'),
+		pgp_sym_encrypt($1, $7),
+		encode(pgp_sym_encrypt($1, $7), 'hex')
+	) RETURNING cuuid
+	SQL,
+	[
+		// 1: original string
+		$text_string,
+		// 2: hashed, 3: hmac, 4: encrypted
+		$string_hashed, $string_hmac, $encrypted,
+		// 5: hash type, 6: hmac secret, 7: pgp secret
+		'sha256', $key, $key
+	]
+);
+$cuuid = $db->dbGetReturningExt('cuuid');
+print "INSERTED: $cuuid<br>";
+print "LAST ERROR: " . $db->dbGetLastError(true) . "<br>";
+
+// read back
+$res = $db->dbReturnRowParams(
+	<<<SQL
+	SELECT
+		-- for compare
+		plain_text,
+		-- via php encryption
+		hash_text, hmac_text, crypt_text,
+		-- in DB encryption
+		pg_digest_bytea, pg_digest_text,
+		pg_hmac_bytea, pg_hmac_text,
+		pg_crypt_bytea, pg_crypt_text
+	FROM
+		test_encryption
+	WHERE
+		cuuid = $1
+	SQL,
+	[
+		$cuuid
+	]
+);
+
+print "RES: <pre>" . Support::prAr($res) . "</pre><br>";
+
+// do compare
+
+print "</body></html>";
+
+// __END__
diff --git a/www/admin/class_test.php b/www/admin/class_test.php
index 8772e07b..0e2d6ad4 100644
--- a/www/admin/class_test.php
+++ b/www/admin/class_test.php
@@ -95,6 +95,7 @@ $test_files = [
 	'class_test.db.dbReturn.php' => 'Class Test: DB dbReturn',
 	'class_test.db.single.php' => 'Class Test: DB single query tests',
 	'class_test.db.convert-placeholder.php' => 'Class Test: DB convert placeholder',
+	'class_test.db.encryption.php' => 'Class Test: DB pgcrypto',
 	'class_test.convert.colors.php' => 'Class Test: CONVERT COLORS',
 	'class_test.check.colors.php' => 'Class Test: CHECK COLORS',
 	'class_test.mime.php' => 'Class Test: MIME',
