diff --git a/README.md b/README.md
index e00b7cfac..36da49455 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ Validator                               | Description
 **isFreightContainerID(str)**                      | alias for `isISO6346`, check if the string is a valid [ISO 6346](https://en.wikipedia.org/wiki/ISO_6346) shipping container identification.
 **isFullWidth(str)**                    | check if the string contains any full-width chars.
 **isHalfWidth(str)**                    | check if the string contains any half-width chars.
-**isHash(str, algorithm)**              | check if the string is a hash of type algorithm.<br/><br/>Algorithm is one of `['crc32', 'crc32b', 'md4', 'md5', 'ripemd128', 'ripemd160', 'sha1', 'sha256', 'sha384', 'sha512', 'tiger128', 'tiger160', 'tiger192']`.
+**isHash(str, algorithm, _validateAlgorithm)**              | check if the string is a hash of type algorithm.<br/><br/>Algorithm is one of `['crc32', 'crc32b', 'md4', 'md5', 'ripemd128', 'ripemd160', 'sha1', 'sha256', 'sha384', 'sha512', 'tiger128', 'tiger160', 'tiger192']`<br/><br/>`_validateAlgorithm` is an optional flag to validate algorithm which defaults to `true`.
 **isHexadecimal(str)**                  | check if the string is a hexadecimal number.
 **isHexColor(str)**                     | check if the string is a hexadecimal color.
 **isHSL(str)**                          | check if the string is an HSL (hue, saturation, lightness, optional alpha) color based on [CSS Colors Level 4 specification][CSS Colors Level 4 Specification].<br/><br/>Comma-separated format supported. Space-separated format supported with the exception of a few edge cases (ex: `hsl(200grad+.1%62%/1)`).
diff --git a/src/lib/isHash.js b/src/lib/isHash.js
index 6efe7c035..c72852ae4 100644
--- a/src/lib/isHash.js
+++ b/src/lib/isHash.js
@@ -1,4 +1,5 @@
 import assertString from './util/assertString';
+import validateKey from './util/validateKey';
 
 const lengths = {
   md5: 32,
@@ -16,8 +17,17 @@ const lengths = {
   crc32b: 8,
 };
 
-export default function isHash(str, algorithm) {
+
+export default function isHash(
+  str,
+  algorithm,
+  _validateAlgorithm = true
+) {
   assertString(str);
+  if (_validateAlgorithm) {
+    /* Validate hash algorithm before defining Regular expression for hash check. */
+    validateKey(lengths, algorithm, `Unknown hash algorithm: ${algorithm}`);
+  }
   const hash = new RegExp(`^[a-fA-F0-9]{${lengths[algorithm]}}$`);
   return hash.test(str);
 }
diff --git a/src/lib/util/validateKey.js b/src/lib/util/validateKey.js
new file mode 100644
index 000000000..6b2cd03e3
--- /dev/null
+++ b/src/lib/util/validateKey.js
@@ -0,0 +1,6 @@
+export default function validateKey(object, key, errorMessage) {
+  if (object.hasOwnProperty(key)) {
+    return true;
+  }
+  throw new Error(errorMessage);
+}
diff --git a/test/util.test.js b/test/util.test.js
index 449cd9ee7..862df30cf 100644
--- a/test/util.test.js
+++ b/test/util.test.js
@@ -4,6 +4,7 @@
  */
 import assert from 'assert';
 import typeOf from '../src/lib/util/typeOf';
+import validateKey from '../src/lib/util/validateKey';
 
 describe('Util', () => {
   it('should validate different typeOf', () => {
@@ -17,4 +18,48 @@ describe('Util', () => {
     assert.strictEqual(typeOf(2021), 'number');
     assert.notStrictEqual(typeOf([]), 'object');
   });
+  it('should validate key in object', () => {
+    assert.strictEqual(validateKey(
+      {
+        a: 1,
+        b: 2,
+      },
+      'a',
+      'Unknown key found'
+    ), true);
+    assert.strictEqual(validateKey(
+      {
+        a: 1,
+        b: 2,
+      },
+      'b',
+      'Unknown key found'
+    ), true);
+    assert.strictEqual(validateKey(
+      {
+        1: 'a',
+        b: 2,
+      },
+      1,
+      'Unknown key found'
+    ), true);
+
+    assert.throws(() => validateKey(
+      {
+        a: 1,
+        b: 2,
+      },
+      'c',
+      'Unknown key found'
+    ), /Unknown key found/);
+
+    assert.strictEqual(validateKey(
+      {
+        a: undefined,
+        b: 2,
+      },
+      'a',
+      'Unknown key found'
+    ), true);
+  });
 });
diff --git a/test/validators.test.js b/test/validators.test.js
index 6c68cd71a..2350b8d75 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -4582,60 +4582,139 @@ describe('Validators', () => {
   });
 
   it('should validate hash strings', () => {
-    ['md5', 'md4', 'ripemd128', 'tiger128'].forEach((algorithm) => {
+    [true, false].forEach((_validateAlgorithm) => {
+      ['md5', 'md4', 'ripemd128', 'tiger128'].forEach((algorithm) => {
+        test({
+          validator: 'isHash',
+          args: [algorithm, _validateAlgorithm],
+          valid: [
+            'd94f3f016ae679c3008de268209132f2',
+            '751adbc511ccbe8edf23d486fa4581cd',
+            '88dae00e614d8f24cfd5a8b3f8002e93',
+            '0bf1c35032a71a14c2f719e5a14c1e96',
+            'd94f3F016Ae679C3008de268209132F2',
+            '88DAE00e614d8f24cfd5a8b3f8002E93',
+          ],
+          invalid: [
+            'q94375dj93458w34',
+            '39485729348',
+            '%&FHKJFvk',
+            'KYT0bf1c35032a71a14c2f719e5a1',
+          ],
+        });
+      });
+
+      ['crc32', 'crc32b'].forEach((algorithm) => {
+        test({
+          validator: 'isHash',
+          args: [algorithm, _validateAlgorithm],
+          valid: [
+            'd94f3f01',
+            '751adbc5',
+            '88dae00e',
+            '0bf1c350',
+            '88DAE00e',
+            '751aDBc5',
+          ],
+          invalid: [
+            'KYT0bf1c35032a71a14c2f719e5a14c1',
+            'q94375dj93458w34',
+            'q943',
+            '39485729348',
+            '%&FHKJFvk',
+          ],
+        });
+      });
+
+      ['sha1', 'tiger160', 'ripemd160'].forEach((algorithm) => {
+        test({
+          validator: 'isHash',
+          args: [algorithm, _validateAlgorithm],
+          valid: [
+            '3ca25ae354e192b26879f651a51d92aa8a34d8d3',
+            'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d',
+            'beb8c3f30da46be179b8df5f5ecb5e4b10508230',
+            'efd5d3b190e893ed317f38da2420d63b7ae0d5ed',
+            'AAF4c61ddCC5e8a2dabede0f3b482cd9AEA9434D',
+            '3ca25AE354e192b26879f651A51d92aa8a34d8D3',
+          ],
+          invalid: [
+            'KYT0bf1c35032a71a14c2f719e5a14c1',
+            'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+            'q94375dj93458w34',
+            '39485729348',
+            '%&FHKJFvk',
+          ],
+        });
+      });
+
       test({
         validator: 'isHash',
-        args: [algorithm],
+        args: ['sha256', _validateAlgorithm],
         valid: [
-          'd94f3f016ae679c3008de268209132f2',
-          '751adbc511ccbe8edf23d486fa4581cd',
-          '88dae00e614d8f24cfd5a8b3f8002e93',
-          '0bf1c35032a71a14c2f719e5a14c1e96',
-          'd94f3F016Ae679C3008de268209132F2',
-          '88DAE00e614d8f24cfd5a8b3f8002E93',
+          '2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824',
+          '1d996e033d612d9af2b44b70061ee0e868bfd14c2dd90b129e1edeb7953e7985',
+          '80f70bfeaed5886e33536bcfa8c05c60afef5a0e48f699a7912d5e399cdcc441',
+          '579282cfb65ca1f109b78536effaf621b853c9f7079664a3fbe2b519f435898c',
+          '2CF24dba5FB0a30e26E83b2AC5b9E29E1b161e5C1fa7425E73043362938b9824',
+          '80F70bFEAed5886e33536bcfa8c05c60aFEF5a0e48f699a7912d5e399cdCC441',
         ],
         invalid: [
+          'KYT0bf1c35032a71a14c2f719e5a14c1',
+          'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
           'q94375dj93458w34',
           '39485729348',
           '%&FHKJFvk',
-          'KYT0bf1c35032a71a14c2f719e5a1',
         ],
       });
-    });
-
-    ['crc32', 'crc32b'].forEach((algorithm) => {
       test({
         validator: 'isHash',
-        args: [algorithm],
+        args: ['sha384', _validateAlgorithm],
         valid: [
-          'd94f3f01',
-          '751adbc5',
-          '88dae00e',
-          '0bf1c350',
-          '88DAE00e',
-          '751aDBc5',
+          '3fed1f814d28dc5d63e313f8a601ecc4836d1662a19365cbdcf6870f6b56388850b58043f7ebf2418abb8f39c3a42e31',
+          'b330f4e575db6e73500bd3b805db1a84b5a034e5d21f0041d91eec85af1dfcb13e40bb1c4d36a72487e048ac6af74b58',
+          'bf547c3fc5841a377eb1519c2890344dbab15c40ae4150b4b34443d2212e5b04aa9d58865bf03d8ae27840fef430b891',
+          'fc09a3d11368386530f985dacddd026ae1e44e0e297c805c3429d50744e6237eb4417c20ffca8807b071823af13a3f65',
+          '3fed1f814d28dc5d63e313f8A601ecc4836d1662a19365CBDCf6870f6b56388850b58043f7ebf2418abb8f39c3a42e31',
+          'b330f4E575db6e73500bd3b805db1a84b5a034e5d21f0041d91EEC85af1dfcb13e40bb1c4d36a72487e048ac6af74b58',
         ],
         invalid: [
           'KYT0bf1c35032a71a14c2f719e5a14c1',
+          'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
           'q94375dj93458w34',
-          'q943',
           '39485729348',
           '%&FHKJFvk',
         ],
       });
-    });
-
-    ['sha1', 'tiger160', 'ripemd160'].forEach((algorithm) => {
       test({
         validator: 'isHash',
-        args: [algorithm],
+        args: ['sha512', _validateAlgorithm],
         valid: [
-          '3ca25ae354e192b26879f651a51d92aa8a34d8d3',
-          'aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d',
-          'beb8c3f30da46be179b8df5f5ecb5e4b10508230',
-          'efd5d3b190e893ed317f38da2420d63b7ae0d5ed',
-          'AAF4c61ddCC5e8a2dabede0f3b482cd9AEA9434D',
-          '3ca25AE354e192b26879f651A51d92aa8a34d8D3',
+          '9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043',
+          '83c586381bf5ba94c8d9ba8b6b92beb0997d76c257708742a6c26d1b7cbb9269af92d527419d5b8475f2bb6686d2f92a6649b7f174c1d8306eb335e585ab5049',
+          '45bc5fa8cb45ee408c04b6269e9f1e1c17090c5ce26ffeeda2af097735b29953ce547e40ff3ad0d120e5361cc5f9cee35ea91ecd4077f3f589b4d439168f91b9',
+          '432ac3d29e4f18c7f604f7c3c96369a6c5c61fc09bf77880548239baffd61636d42ed374f41c261e424d20d98e320e812a6d52865be059745fdb2cb20acff0ab',
+          '9B71D224bd62f3785D96d46ad3ea3d73319bFBC2890CAAdae2dff72519673CA72323C3d99ba5c11d7c7ACC6e14b8c5DA0c4663475c2E5c3adef46f73bcDEC043',
+          '432AC3d29E4f18c7F604f7c3c96369A6C5c61fC09Bf77880548239baffd61636d42ed374f41c261e424d20d98e320e812a6d52865be059745fdb2cb20acff0ab',
+        ],
+        invalid: [
+          'KYT0bf1c35032a71a14c2f719e5a14c1',
+          'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
+          'q94375dj93458w34',
+          '39485729348',
+          '%&FHKJFvk',
+        ],
+      });
+      test({
+        validator: 'isHash',
+        args: ['tiger192', _validateAlgorithm],
+        valid: [
+          '6281a1f098c5e7290927ed09150d43ff3990a0fe1a48267c',
+          '56268f7bc269cf1bc83d3ce42e07a85632394737918f4760',
+          '46fc0125a148788a3ac1d649566fc04eb84a746f1a6e4fa7',
+          '7731ea1621ae99ea3197b94583d034fdbaa4dce31a67404a',
+          '6281A1f098c5e7290927ed09150d43ff3990a0fe1a48267C',
+          '46FC0125a148788a3AC1d649566fc04eb84A746f1a6E4fa7',
         ],
         invalid: [
           'KYT0bf1c35032a71a14c2f719e5a14c1',
@@ -4645,58 +4724,17 @@ describe('Validators', () => {
           '%&FHKJFvk',
         ],
       });
-    });
-
-    test({
-      validator: 'isHash',
-      args: ['sha256'],
-      valid: [
-        '2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824',
-        '1d996e033d612d9af2b44b70061ee0e868bfd14c2dd90b129e1edeb7953e7985',
-        '80f70bfeaed5886e33536bcfa8c05c60afef5a0e48f699a7912d5e399cdcc441',
-        '579282cfb65ca1f109b78536effaf621b853c9f7079664a3fbe2b519f435898c',
-        '2CF24dba5FB0a30e26E83b2AC5b9E29E1b161e5C1fa7425E73043362938b9824',
-        '80F70bFEAed5886e33536bcfa8c05c60aFEF5a0e48f699a7912d5e399cdCC441',
-      ],
-      invalid: [
-        'KYT0bf1c35032a71a14c2f719e5a14c1',
-        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
-        'q94375dj93458w34',
-        '39485729348',
-        '%&FHKJFvk',
-      ],
-    });
-    test({
-      validator: 'isHash',
-      args: ['sha384'],
-      valid: [
-        '3fed1f814d28dc5d63e313f8a601ecc4836d1662a19365cbdcf6870f6b56388850b58043f7ebf2418abb8f39c3a42e31',
-        'b330f4e575db6e73500bd3b805db1a84b5a034e5d21f0041d91eec85af1dfcb13e40bb1c4d36a72487e048ac6af74b58',
-        'bf547c3fc5841a377eb1519c2890344dbab15c40ae4150b4b34443d2212e5b04aa9d58865bf03d8ae27840fef430b891',
-        'fc09a3d11368386530f985dacddd026ae1e44e0e297c805c3429d50744e6237eb4417c20ffca8807b071823af13a3f65',
-        '3fed1f814d28dc5d63e313f8A601ecc4836d1662a19365CBDCf6870f6b56388850b58043f7ebf2418abb8f39c3a42e31',
-        'b330f4E575db6e73500bd3b805db1a84b5a034e5d21f0041d91EEC85af1dfcb13e40bb1c4d36a72487e048ac6af74b58',
-      ],
-      invalid: [
-        'KYT0bf1c35032a71a14c2f719e5a14c1',
-        'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
-        'q94375dj93458w34',
-        '39485729348',
-        '%&FHKJFvk',
-      ],
     });
     test({
       validator: 'isHash',
-      args: ['sha512'],
-      valid: [
-        '9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043',
-        '83c586381bf5ba94c8d9ba8b6b92beb0997d76c257708742a6c26d1b7cbb9269af92d527419d5b8475f2bb6686d2f92a6649b7f174c1d8306eb335e585ab5049',
-        '45bc5fa8cb45ee408c04b6269e9f1e1c17090c5ce26ffeeda2af097735b29953ce547e40ff3ad0d120e5361cc5f9cee35ea91ecd4077f3f589b4d439168f91b9',
-        '432ac3d29e4f18c7f604f7c3c96369a6c5c61fc09bf77880548239baffd61636d42ed374f41c261e424d20d98e320e812a6d52865be059745fdb2cb20acff0ab',
-        '9B71D224bd62f3785D96d46ad3ea3d73319bFBC2890CAAdae2dff72519673CA72323C3d99ba5c11d7c7ACC6e14b8c5DA0c4663475c2E5c3adef46f73bcDEC043',
-        '432AC3d29E4f18c7F604f7c3c96369A6C5c61fC09Bf77880548239baffd61636d42ed374f41c261e424d20d98e320e812a6d52865be059745fdb2cb20acff0ab',
-      ],
+      args: ['ABC', false],
       invalid: [
+        '6281a1f098c5e7290927ed09150d43ff3990a0fe1a48267c',
+        '56268f7bc269cf1bc83d3ce42e07a85632394737918f4760',
+        '46fc0125a148788a3ac1d649566fc04eb84a746f1a6e4fa7',
+        '7731ea1621ae99ea3197b94583d034fdbaa4dce31a67404a',
+        '6281A1f098c5e7290927ed09150d43ff3990a0fe1a48267C',
+        '46FC0125a148788a3AC1d649566fc04eb84A746f1a6E4fa7',
         'KYT0bf1c35032a71a14c2f719e5a14c1',
         'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
         'q94375dj93458w34',
@@ -4706,16 +4744,14 @@ describe('Validators', () => {
     });
     test({
       validator: 'isHash',
-      args: ['tiger192'],
-      valid: [
+      args: ['ABC'],
+      error: [
         '6281a1f098c5e7290927ed09150d43ff3990a0fe1a48267c',
         '56268f7bc269cf1bc83d3ce42e07a85632394737918f4760',
         '46fc0125a148788a3ac1d649566fc04eb84a746f1a6e4fa7',
         '7731ea1621ae99ea3197b94583d034fdbaa4dce31a67404a',
         '6281A1f098c5e7290927ed09150d43ff3990a0fe1a48267C',
         '46FC0125a148788a3AC1d649566fc04eb84A746f1a6E4fa7',
-      ],
-      invalid: [
         'KYT0bf1c35032a71a14c2f719e5a14c1',
         'KYT0bf1c35032a71a14c2f719e5a14c1dsjkjkjkjkkjk',
         'q94375dj93458w34',