diff --git a/signing/mcl/multisig/testData/data.go b/signing/mcl/multisig/testData/data.go
new file mode 100644
index 0000000..e8ab225
--- /dev/null
+++ b/signing/mcl/multisig/testData/data.go
@@ -0,0 +1,54 @@
+package testData
+
+import (
+	crypto "github.com/multiversx/mx-chain-crypto-go"
+)
+
+// PredefinedTest defines the data used for testing
+type PredefinedTest struct {
+	TestName      string
+	Message       string
+	ExpectedError string
+}
+
+// predefinedAggregateSignaturesTests defines the scenarios for testing the AggregateSignatures
+var predefinedAggregateSignaturesTests = []PredefinedTest{
+	{
+		TestName:      "TestShouldWork",
+		Message:       "a predefined message to sign",
+		ExpectedError: "noError",
+	},
+}
+
+// KeyPair defines a pair of public key and private key
+type KeyPair struct {
+	PublicKey  string `json:"publicKey"`
+	PrivateKey string `json:"privateKey"`
+}
+
+// SignaturePair defines a pair of signature and public key
+type SignaturePair struct {
+	Signature string `json:"signature"`
+	PublicKey string `json:"publicKey"`
+}
+
+// TestVectorElement defines the data for a test vector
+type TestVectorElement struct {
+	Signatures          []SignaturePair `json:"signatures"`
+	Message             string          `json:"message"`
+	AggregatedSignature string          `json:"aggregatedSignature"`
+	ErrorMessage        string          `json:"errorMessage"`
+	TestName            string          `json:"testName"`
+}
+
+// JSONFileContent defines the data for generating the json file
+type JSONFileContent struct {
+	Keys        []KeyPair           `json:"keys"`
+	TestVectors []TestVectorElement `json:"testVectors"`
+}
+
+// Key defines a tuple of public key and private key
+type Key struct {
+	PubKey     crypto.PublicKey
+	PrivateKey crypto.PrivateKey
+}
diff --git a/signing/mcl/multisig/testData/jsonGenerator.go b/signing/mcl/multisig/testData/jsonGenerator.go
new file mode 100644
index 0000000..bf704f9
--- /dev/null
+++ b/signing/mcl/multisig/testData/jsonGenerator.go
@@ -0,0 +1,110 @@
+package testData
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"os"
+
+	crypto "github.com/multiversx/mx-chain-crypto-go"
+	"github.com/multiversx/mx-chain-crypto-go/signing"
+	"github.com/multiversx/mx-chain-crypto-go/signing/mcl"
+)
+
+const numKeys = 5
+
+func createKeyPairs(grSize uint16, suite crypto.Suite) []Key {
+	kg := signing.NewKeyGenerator(suite)
+	keys := make([]Key, 0, grSize)
+
+	for i := uint16(0); i < grSize; i++ {
+		sk, pk := kg.GeneratePair()
+		keys = append(keys, Key{
+			PubKey:     pk,
+			PrivateKey: sk,
+		})
+	}
+	return keys
+}
+
+// GenerateJSONFileKOSKForAggregateSignaturesTests for KOSK AggregateSignaturesTests
+func GenerateJSONFileKOSKForAggregateSignaturesTests(signer crypto.LowLevelSignerBLS) error {
+	return generateJSONFile(signer, predefinedAggregateSignaturesTests, "testData/multisigKOSKAggSig.json")
+}
+
+// GenerateJSONFileKOSKForVerifyAggregatedSigTests for KOSK VerifyAggregatedSigTests
+func GenerateJSONFileKOSKForVerifyAggregatedSigTests(signer crypto.LowLevelSignerBLS) error {
+	return generateJSONFile(signer, predefinedAggregateSignaturesTests, "testData/multisigKOSKVerifyAggSig.json")
+}
+
+// GenerateJSONFileNonKOSKForAggregateSignaturesTests for NonKOSK AggregateSignaturesTests
+func GenerateJSONFileNonKOSKForAggregateSignaturesTests(signer crypto.LowLevelSignerBLS) error {
+	return generateJSONFile(signer, predefinedAggregateSignaturesTests, "testData/multisigNonKOSKAggSig.json")
+}
+
+// GenerateJSONFileNonKOSKForVerifyAggregatedSigTests for NonKOSK VerifyAggregatedSigTests
+func GenerateJSONFileNonKOSKForVerifyAggregatedSigTests(signer crypto.LowLevelSignerBLS) error {
+	return generateJSONFile(signer, predefinedAggregateSignaturesTests, "testData/multisigNonKOSKVerifyAggSig.json")
+}
+
+// generateJSONFile generates the JSON file for KOSK/NonKOSK, should be used only once
+func generateJSONFile(lls crypto.LowLevelSignerBLS, predefinedTests []PredefinedTest, filename string) error {
+	suite := mcl.NewSuiteBLS12()
+
+	mapKeys := createKeyPairs(numKeys, suite)
+
+	var jsonFileContent JSONFileContent
+
+	var sigShares [][]byte
+	var pubKeys []crypto.PublicKey
+
+	for _, key := range mapKeys {
+		pk, _ := key.PubKey.ToByteArray()
+		sk, _ := key.PubKey.ToByteArray()
+
+		jsonFileContent.Keys = append(jsonFileContent.Keys, KeyPair{
+			PublicKey:  hex.EncodeToString(pk),
+			PrivateKey: hex.EncodeToString(sk),
+		})
+
+		pubKeys = append(pubKeys, key.PubKey)
+	}
+
+	sigPairs := make([]SignaturePair, 0, numKeys*len(predefinedTests))
+	for _, predefinedTest := range predefinedTests {
+		for _, key := range mapKeys {
+			pk, _ := key.PubKey.ToByteArray()
+
+			sig, err := lls.SignShare(key.PrivateKey, []byte(predefinedTest.Message))
+			if err != nil {
+				return err
+			}
+
+			sigShares = append(sigShares, sig)
+			sigPairs = append(sigPairs, SignaturePair{
+				Signature: hex.EncodeToString(sig),
+				PublicKey: hex.EncodeToString(pk),
+			})
+		}
+
+		aggregatedSig, _ := lls.AggregateSignatures(suite, sigShares, pubKeys)
+		sigShares = sigShares[:0]
+
+		jsonFileContent.TestVectors = append(jsonFileContent.TestVectors, TestVectorElement{
+			Signatures:          sigPairs,
+			Message:             hex.EncodeToString([]byte(predefinedTest.Message)),
+			AggregatedSignature: hex.EncodeToString(aggregatedSig),
+			ErrorMessage:        predefinedTest.ExpectedError,
+			TestName:            predefinedTest.TestName,
+		})
+		sigPairs = sigPairs[:0]
+	}
+
+	marshalledJsonFileContent, err := json.MarshalIndent(jsonFileContent, "", " ")
+	if err != nil {
+		return err
+	}
+
+	err = os.WriteFile(filename, marshalledJsonFileContent, os.ModeAppend)
+	return err
+
+}
diff --git a/signing/mcl/multisig/testData/multisigKOSKAggSig.json b/signing/mcl/multisig/testData/multisigKOSKAggSig.json
new file mode 100644
index 0000000..f3c1d9d
--- /dev/null
+++ b/signing/mcl/multisig/testData/multisigKOSKAggSig.json
@@ -0,0 +1,54 @@
+{
+ "keys": [
+  {
+   "publicKey": "d31b53ffdaea86f72ad8faf744a9a2a7e5293cd3b395bb605650d6a7a926fb3111ed1ae59982aff4fb758464802102049d7c8b55afa1fdc464284e0ad75e1e33251e4ac9db3bf6b80c79f5e992b6f1d7e08d592ffa53c792c347e002a0b81993",
+   "privateKey": "d31b53ffdaea86f72ad8faf744a9a2a7e5293cd3b395bb605650d6a7a926fb3111ed1ae59982aff4fb758464802102049d7c8b55afa1fdc464284e0ad75e1e33251e4ac9db3bf6b80c79f5e992b6f1d7e08d592ffa53c792c347e002a0b81993"
+  },
+  {
+   "publicKey": "31d2a4541e73da3e82f9f827afe1ebf8417768eb970cc8079f6d819da7b96f3f9f2d8bf6dddf43c1e53a72011a067f07b52756f89338e07f23b8ec66243569dc840246bc8e3218c3269a77311bfade6c825f2459aad850a35976df49c586ff19",
+   "privateKey": "31d2a4541e73da3e82f9f827afe1ebf8417768eb970cc8079f6d819da7b96f3f9f2d8bf6dddf43c1e53a72011a067f07b52756f89338e07f23b8ec66243569dc840246bc8e3218c3269a77311bfade6c825f2459aad850a35976df49c586ff19"
+  },
+  {
+   "publicKey": "5c5d23dffa673d8b700463c07cbac904628bd43dc24497f4dd3fa039ceb0e12ab700648726b669e08721e2089de178170a268481055d2b9e1a509fe9c85315ae29920d0dc42367ccf310df8fe4978493d7c24a93b3c423f0d087e67bbf9c3e86",
+   "privateKey": "5c5d23dffa673d8b700463c07cbac904628bd43dc24497f4dd3fa039ceb0e12ab700648726b669e08721e2089de178170a268481055d2b9e1a509fe9c85315ae29920d0dc42367ccf310df8fe4978493d7c24a93b3c423f0d087e67bbf9c3e86"
+  },
+  {
+   "publicKey": "9e46c09d65d83034ad2be0d6797020ab408d2443d44b3d8c7352f7c266fd65697ac2bd3908f7bb070b8bb885daa2d4130be8956e19750ac810e1e5fb28f25ab20cf90277bbcd8f656225103b36049e08921a7b2e3bf32b93f2d5cc52c39d048b",
+   "privateKey": "9e46c09d65d83034ad2be0d6797020ab408d2443d44b3d8c7352f7c266fd65697ac2bd3908f7bb070b8bb885daa2d4130be8956e19750ac810e1e5fb28f25ab20cf90277bbcd8f656225103b36049e08921a7b2e3bf32b93f2d5cc52c39d048b"
+  },
+  {
+   "publicKey": "ecba48713de85cca5303cc42658d099cf8f7371fe83ff3fc8985da2fb78ec3f640dfbf626624afbda92dd488221528019c91bca377e275c4eacf14d6d93a524d25207e2844c5e24f5ecedb1736e5138d9d010c9d588b32601452315db6051f08",
+   "privateKey": "ecba48713de85cca5303cc42658d099cf8f7371fe83ff3fc8985da2fb78ec3f640dfbf626624afbda92dd488221528019c91bca377e275c4eacf14d6d93a524d25207e2844c5e24f5ecedb1736e5138d9d010c9d588b32601452315db6051f08"
+  }
+ ],
+ "testVectors": [
+  {
+   "signatures": [
+    {
+     "signature": "cbda00694494050a84486c2e899a3c5c5d0abbec82e5820fd66268510fc6bae61031dae768aae3682ba61d144986220a",
+     "publicKey": "d31b53ffdaea86f72ad8faf744a9a2a7e5293cd3b395bb605650d6a7a926fb3111ed1ae59982aff4fb758464802102049d7c8b55afa1fdc464284e0ad75e1e33251e4ac9db3bf6b80c79f5e992b6f1d7e08d592ffa53c792c347e002a0b81993"
+    },
+    {
+     "signature": "613cc33ea19960ff164d9fdd805e6fa0357da2a4529fc7e8bfee042f5a55b5299b8fca30bc2a0bccaee3a20417abfd8e",
+     "publicKey": "31d2a4541e73da3e82f9f827afe1ebf8417768eb970cc8079f6d819da7b96f3f9f2d8bf6dddf43c1e53a72011a067f07b52756f89338e07f23b8ec66243569dc840246bc8e3218c3269a77311bfade6c825f2459aad850a35976df49c586ff19"
+    },
+    {
+     "signature": "b97beaef4e14f05b447fdc3b8d5b99ff14c9708b1df875e18ce9e4a05c6cee56bfe211317200078eb8df4d3f5bc8e90d",
+     "publicKey": "5c5d23dffa673d8b700463c07cbac904628bd43dc24497f4dd3fa039ceb0e12ab700648726b669e08721e2089de178170a268481055d2b9e1a509fe9c85315ae29920d0dc42367ccf310df8fe4978493d7c24a93b3c423f0d087e67bbf9c3e86"
+    },
+    {
+     "signature": "e542147b506a1c07c5f2ca9b208876489f17a193ba17ac7016b515819ea4207b3c156f7b33a564842f1eece15f12b888",
+     "publicKey": "9e46c09d65d83034ad2be0d6797020ab408d2443d44b3d8c7352f7c266fd65697ac2bd3908f7bb070b8bb885daa2d4130be8956e19750ac810e1e5fb28f25ab20cf90277bbcd8f656225103b36049e08921a7b2e3bf32b93f2d5cc52c39d048b"
+    },
+    {
+     "signature": "bcdb362b108434705986c319e7788d868e7cc7b255e36405d2b719417074bc2ff61dc1475f6e01a31c5957f1676f3c8d",
+     "publicKey": "ecba48713de85cca5303cc42658d099cf8f7371fe83ff3fc8985da2fb78ec3f640dfbf626624afbda92dd488221528019c91bca377e275c4eacf14d6d93a524d25207e2844c5e24f5ecedb1736e5138d9d010c9d588b32601452315db6051f08"
+    }
+   ],
+   "message": "6120707265646566696e6564206d65737361676520746f207369676e",
+   "aggregatedSignature": "8bf8e05c845712e63b6548e771c432382c977c41c4cb3590a6178ac542f6317f2ac5e47468b49f5d3070a742a75b7808",
+   "errorMessage": "noError",
+   "testName": "TestShouldWork"
+  }
+ ]
+}
\ No newline at end of file
diff --git a/signing/mcl/multisig/testData/multisigKOSKVerifyAggSig.json b/signing/mcl/multisig/testData/multisigKOSKVerifyAggSig.json
new file mode 100644
index 0000000..7f7fd0f
--- /dev/null
+++ b/signing/mcl/multisig/testData/multisigKOSKVerifyAggSig.json
@@ -0,0 +1,54 @@
+{
+ "keys": [
+  {
+   "publicKey": "23c8dc504c80be9be8ea6a42d38a89e48f1755e92f1802cf2af28193f89d068d75af246ea6e8bacfc59b7c708aee82067bf1a89cb861276db4d110b78681f8285c1f39c4b236227a0e2855fdb1d145e1dacf1dbe51e6f70846a025a7e67a9207",
+   "privateKey": "23c8dc504c80be9be8ea6a42d38a89e48f1755e92f1802cf2af28193f89d068d75af246ea6e8bacfc59b7c708aee82067bf1a89cb861276db4d110b78681f8285c1f39c4b236227a0e2855fdb1d145e1dacf1dbe51e6f70846a025a7e67a9207"
+  },
+  {
+   "publicKey": "adcbde71787900906b1bce50da5dc4a184821cc7a9544dbcd9452fde77703e93433de9a983dbaa7dcc2bca597ba0980c11c8b49eb81717e6adaead310fba9429d41988827ff8902d4ec56e55afe0b394e2a7c69ec0cc72d65ccf7c70cb20050a",
+   "privateKey": "adcbde71787900906b1bce50da5dc4a184821cc7a9544dbcd9452fde77703e93433de9a983dbaa7dcc2bca597ba0980c11c8b49eb81717e6adaead310fba9429d41988827ff8902d4ec56e55afe0b394e2a7c69ec0cc72d65ccf7c70cb20050a"
+  },
+  {
+   "publicKey": "e91372594e7b304b27e0a8847fc066415fbbab7bc039ca455fdb1f6c1b206e4294e8adac7fda6f4df401ada18ef16c0552e1c0f21311e23c1e039f73bb8cbde8e4a33849634f9e5bc6c9667137dbc5d36fe2be8ba521c319d0174a7c41dd7807",
+   "privateKey": "e91372594e7b304b27e0a8847fc066415fbbab7bc039ca455fdb1f6c1b206e4294e8adac7fda6f4df401ada18ef16c0552e1c0f21311e23c1e039f73bb8cbde8e4a33849634f9e5bc6c9667137dbc5d36fe2be8ba521c319d0174a7c41dd7807"
+  },
+  {
+   "publicKey": "85ccd78509295cd9ef3b05acb878fc812b702a1519c6f64e5be61605e838070fca1286f2f2b224e53f55a784dac942052ac8123e71bae79a2f20b3710e28b27bd42c17842aa8b5fac711e0b621cdbdefb505ba20e91121f9ae52f70aac9ba810",
+   "privateKey": "85ccd78509295cd9ef3b05acb878fc812b702a1519c6f64e5be61605e838070fca1286f2f2b224e53f55a784dac942052ac8123e71bae79a2f20b3710e28b27bd42c17842aa8b5fac711e0b621cdbdefb505ba20e91121f9ae52f70aac9ba810"
+  },
+  {
+   "publicKey": "92c2a561b1fc888d28aac49cfde3815bc42f5dd0ec9dd823988ca5110841b4919903ecd1ff8f169dfc18b1919f4acd0c6ffc3e60546624f1b5cd29912eb26a88fcc6ac0818821a33a86014797b1adb70b006a7414c871ff9d87b4fbc25dabc0f",
+   "privateKey": "92c2a561b1fc888d28aac49cfde3815bc42f5dd0ec9dd823988ca5110841b4919903ecd1ff8f169dfc18b1919f4acd0c6ffc3e60546624f1b5cd29912eb26a88fcc6ac0818821a33a86014797b1adb70b006a7414c871ff9d87b4fbc25dabc0f"
+  }
+ ],
+ "testVectors": [
+  {
+   "signatures": [
+    {
+     "signature": "6fba93b89230062763a7e8056a74983ac0f139be2f2d8c2984629d6ae145393ff4897e71991ac3678ce9b3c52edc8918",
+     "publicKey": "23c8dc504c80be9be8ea6a42d38a89e48f1755e92f1802cf2af28193f89d068d75af246ea6e8bacfc59b7c708aee82067bf1a89cb861276db4d110b78681f8285c1f39c4b236227a0e2855fdb1d145e1dacf1dbe51e6f70846a025a7e67a9207"
+    },
+    {
+     "signature": "9722c3144ddb07d1261cf01feb0c464f72042909d06fa283e4d7380cc0859a894ac406c8b9007046202674d0961fda0d",
+     "publicKey": "adcbde71787900906b1bce50da5dc4a184821cc7a9544dbcd9452fde77703e93433de9a983dbaa7dcc2bca597ba0980c11c8b49eb81717e6adaead310fba9429d41988827ff8902d4ec56e55afe0b394e2a7c69ec0cc72d65ccf7c70cb20050a"
+    },
+    {
+     "signature": "bcf1af8b4f0e7297409080c4f120b2ae8916c51cdff64a56ca64795c6bde53ac4212760c652ee571cae8c37956ada601",
+     "publicKey": "e91372594e7b304b27e0a8847fc066415fbbab7bc039ca455fdb1f6c1b206e4294e8adac7fda6f4df401ada18ef16c0552e1c0f21311e23c1e039f73bb8cbde8e4a33849634f9e5bc6c9667137dbc5d36fe2be8ba521c319d0174a7c41dd7807"
+    },
+    {
+     "signature": "4fbcc9df72906481bfea1a29d8da70ded5b5f86cfd3c2f1ae33b64eb69b007f7b1d9c9bee3216c8d6f570ec789a0348b",
+     "publicKey": "85ccd78509295cd9ef3b05acb878fc812b702a1519c6f64e5be61605e838070fca1286f2f2b224e53f55a784dac942052ac8123e71bae79a2f20b3710e28b27bd42c17842aa8b5fac711e0b621cdbdefb505ba20e91121f9ae52f70aac9ba810"
+    },
+    {
+     "signature": "ade15c9344d91e28278357b3f5aebd1c7556026578f9df3735d54df9cfdf7b54f8142ef71d4d39f95bfdf2ea6263a093",
+     "publicKey": "92c2a561b1fc888d28aac49cfde3815bc42f5dd0ec9dd823988ca5110841b4919903ecd1ff8f169dfc18b1919f4acd0c6ffc3e60546624f1b5cd29912eb26a88fcc6ac0818821a33a86014797b1adb70b006a7414c871ff9d87b4fbc25dabc0f"
+    }
+   ],
+   "message": "6120707265646566696e6564206d65737361676520746f207369676e",
+   "aggregatedSignature": "be3ed6dbfdca8fe248c07790a36d5b1176a15a7f243039bcd4c383610c2bfcb9c606b8b03a6288904975d41e0e34598b",
+   "errorMessage": "noError",
+   "testName": "TestShouldWork"
+  }
+ ]
+}
\ No newline at end of file
diff --git a/signing/mcl/multisig/testData/multisigNonKOSKAggSig.json b/signing/mcl/multisig/testData/multisigNonKOSKAggSig.json
new file mode 100644
index 0000000..a8d0add
--- /dev/null
+++ b/signing/mcl/multisig/testData/multisigNonKOSKAggSig.json
@@ -0,0 +1,54 @@
+{
+ "keys": [
+  {
+   "publicKey": "b407253a79083eec81abe6c30a694e038fb1ae07ea91055dc1d129fe042d152882334606b5d56460bacf54d5c203070cc7e271c7cae200fe31933d39dff721e219d30b811af2d9532ce9d8f71461f66ca696bc33864bb2e52c8ebe9af034e508",
+   "privateKey": "b407253a79083eec81abe6c30a694e038fb1ae07ea91055dc1d129fe042d152882334606b5d56460bacf54d5c203070cc7e271c7cae200fe31933d39dff721e219d30b811af2d9532ce9d8f71461f66ca696bc33864bb2e52c8ebe9af034e508"
+  },
+  {
+   "publicKey": "9b376f4e05f6d578bfa196f442f23a2d2a2ef99c5534f8b6c15555e88c9e7a36f03a44ea4421523973f3cecb58e313189983fc3be003dfdda3bc958bbbae166b1be8882083b2d7b6f7f44d228733e7f5165a3132f36d13dcddf6c8daea6c9591",
+   "privateKey": "9b376f4e05f6d578bfa196f442f23a2d2a2ef99c5534f8b6c15555e88c9e7a36f03a44ea4421523973f3cecb58e313189983fc3be003dfdda3bc958bbbae166b1be8882083b2d7b6f7f44d228733e7f5165a3132f36d13dcddf6c8daea6c9591"
+  },
+  {
+   "publicKey": "e6c61229ff98b2ce5dc5da841e4e0c733d10845efd138f71a6d38f0210c3dc40c7fc03f40074ccd25725327f28a3e814c09e556028b5b694083598e77957d4e3a999ebda9c74c068d6194603d4d3e3edba68a2ddf7b8b75bba1ca7ada42a158e",
+   "privateKey": "e6c61229ff98b2ce5dc5da841e4e0c733d10845efd138f71a6d38f0210c3dc40c7fc03f40074ccd25725327f28a3e814c09e556028b5b694083598e77957d4e3a999ebda9c74c068d6194603d4d3e3edba68a2ddf7b8b75bba1ca7ada42a158e"
+  },
+  {
+   "publicKey": "16bd6ad223ca625be7e2fa1582f0fb54399cbbe323fb53a407712ff2d1f1b1f7e1a8ba642b3fb399f760b983115de60b123f6eab2b96a4ff68eb9273a1991740a98dac46bf3e695b292276487d6657faf2137744de5bbdea9f448b762b889693",
+   "privateKey": "16bd6ad223ca625be7e2fa1582f0fb54399cbbe323fb53a407712ff2d1f1b1f7e1a8ba642b3fb399f760b983115de60b123f6eab2b96a4ff68eb9273a1991740a98dac46bf3e695b292276487d6657faf2137744de5bbdea9f448b762b889693"
+  },
+  {
+   "publicKey": "e533fc6c4dce5e9437a6dd828f8b77520e3b19ff61467d4db2dc9103a1e40f5fa5a94288d20e754c3864db1684ce3b14f4a5eb31179b04120d4d74c0bb3262320cdf4d29832c35d4668d177df76b8d971e704f2e0cb763cd82e3d4e355753683",
+   "privateKey": "e533fc6c4dce5e9437a6dd828f8b77520e3b19ff61467d4db2dc9103a1e40f5fa5a94288d20e754c3864db1684ce3b14f4a5eb31179b04120d4d74c0bb3262320cdf4d29832c35d4668d177df76b8d971e704f2e0cb763cd82e3d4e355753683"
+  }
+ ],
+ "testVectors": [
+  {
+   "signatures": [
+    {
+     "signature": "41ab319221f4fbfb8efff233e555dd54efd20417dc79618e086bc26bc2b542c2aa7f29695b09a538a719aaec79ae4b0a",
+     "publicKey": "b407253a79083eec81abe6c30a694e038fb1ae07ea91055dc1d129fe042d152882334606b5d56460bacf54d5c203070cc7e271c7cae200fe31933d39dff721e219d30b811af2d9532ce9d8f71461f66ca696bc33864bb2e52c8ebe9af034e508"
+    },
+    {
+     "signature": "ef26de3e8b1707c9d933da0288df5794802491b25ed4c88da4508a29489679c737e62d4ec9fff33e9a75367f1055b890",
+     "publicKey": "9b376f4e05f6d578bfa196f442f23a2d2a2ef99c5534f8b6c15555e88c9e7a36f03a44ea4421523973f3cecb58e313189983fc3be003dfdda3bc958bbbae166b1be8882083b2d7b6f7f44d228733e7f5165a3132f36d13dcddf6c8daea6c9591"
+    },
+    {
+     "signature": "f01ad74b05348ccf9faffbcb07229a37a2a7e428e485e1ff0226af1dfddddfedebd7008dead8a80ff3e7a416a76fa801",
+     "publicKey": "e6c61229ff98b2ce5dc5da841e4e0c733d10845efd138f71a6d38f0210c3dc40c7fc03f40074ccd25725327f28a3e814c09e556028b5b694083598e77957d4e3a999ebda9c74c068d6194603d4d3e3edba68a2ddf7b8b75bba1ca7ada42a158e"
+    },
+    {
+     "signature": "6d7ffa5692a643120c8b448a798fea9b707afc5dce8c15365c4dea175e24226fa14841636fb74b2568f8f89d04cdf787",
+     "publicKey": "16bd6ad223ca625be7e2fa1582f0fb54399cbbe323fb53a407712ff2d1f1b1f7e1a8ba642b3fb399f760b983115de60b123f6eab2b96a4ff68eb9273a1991740a98dac46bf3e695b292276487d6657faf2137744de5bbdea9f448b762b889693"
+    },
+    {
+     "signature": "91682cb5ca17527a221e6a308c58ca7e87f9ff5667b8bb1a2df76e82718f572f0210d32c51f078eef71a4083ae3f9011",
+     "publicKey": "e533fc6c4dce5e9437a6dd828f8b77520e3b19ff61467d4db2dc9103a1e40f5fa5a94288d20e754c3864db1684ce3b14f4a5eb31179b04120d4d74c0bb3262320cdf4d29832c35d4668d177df76b8d971e704f2e0cb763cd82e3d4e355753683"
+    }
+   ],
+   "message": "6120707265646566696e6564206d65737361676520746f207369676e",
+   "aggregatedSignature": "d5f1f76e64cf48a6b2a2e7af1739fc2257e8307cbc5c1729e4a3881f4c7146a54c76f8df385472fe728969803833bd0f",
+   "errorMessage": "noError",
+   "testName": "TestShouldWork"
+  }
+ ]
+}
\ No newline at end of file
diff --git a/signing/mcl/multisig/testData/multisigNonKOSKVerifyAggSig.json b/signing/mcl/multisig/testData/multisigNonKOSKVerifyAggSig.json
new file mode 100644
index 0000000..5e704e1
--- /dev/null
+++ b/signing/mcl/multisig/testData/multisigNonKOSKVerifyAggSig.json
@@ -0,0 +1,54 @@
+{
+ "keys": [
+  {
+   "publicKey": "e0ec2483c6911c62d00c6c82d72d11b35732d71c1e65974e0181a4eafc83fe79e8684ab8ebaf7e48777fd622854a0310f3ad7ca11a71b0c116d787a31f1487c61db0b5bcab0b1db25d9c48cbc7dfb7c551288a4d052cb52a1ed4ab0911719903",
+   "privateKey": "e0ec2483c6911c62d00c6c82d72d11b35732d71c1e65974e0181a4eafc83fe79e8684ab8ebaf7e48777fd622854a0310f3ad7ca11a71b0c116d787a31f1487c61db0b5bcab0b1db25d9c48cbc7dfb7c551288a4d052cb52a1ed4ab0911719903"
+  },
+  {
+   "publicKey": "5ea3382c47ce05e0c3e424b9dc8383fc9a67f2ea29bf71f3b2b47f2687698a5faadd00a842a8d894331bde9f2d3e6810abe058658bc52ed643dffa535ab92ae9de5120f84aea38e400c7f1406a5223e0c320e2388d7cd54be75321f2fdbdd18e",
+   "privateKey": "5ea3382c47ce05e0c3e424b9dc8383fc9a67f2ea29bf71f3b2b47f2687698a5faadd00a842a8d894331bde9f2d3e6810abe058658bc52ed643dffa535ab92ae9de5120f84aea38e400c7f1406a5223e0c320e2388d7cd54be75321f2fdbdd18e"
+  },
+  {
+   "publicKey": "15be2570b657f317775bb729d3b1fa9df4da0bc830de0239367161537bb8a276b2d428d84556bc3d1ba730fa0cdc6f026e5cb12eca554f27ecee3ea1927db625542f86a811f18b0bd131f66ffff7a8c0d0d3c80ecc3b3c3cdfadb393cb946309",
+   "privateKey": "15be2570b657f317775bb729d3b1fa9df4da0bc830de0239367161537bb8a276b2d428d84556bc3d1ba730fa0cdc6f026e5cb12eca554f27ecee3ea1927db625542f86a811f18b0bd131f66ffff7a8c0d0d3c80ecc3b3c3cdfadb393cb946309"
+  },
+  {
+   "publicKey": "cc13d958a8f81f7e3c80b43eaab4585a9a13990e6e2f3a7e59f0fbb869e507d9a6c1c6fc380cbade96f54dfbd5f4e4132a907804f4016072c7cbd9c4e3ab6042811f8c6641880725e339bf57e16d521bc4c150ae4f5a212971c3c6cc1468f00e",
+   "privateKey": "cc13d958a8f81f7e3c80b43eaab4585a9a13990e6e2f3a7e59f0fbb869e507d9a6c1c6fc380cbade96f54dfbd5f4e4132a907804f4016072c7cbd9c4e3ab6042811f8c6641880725e339bf57e16d521bc4c150ae4f5a212971c3c6cc1468f00e"
+  },
+  {
+   "publicKey": "441c77ac44a3d3389392f4fb8665016a0330de2b381dfa651b1f104de0eb27768b996009515e45bc680f16bf2a803f069735c66ea369211c09cb13d3d3e5ec05b60a004176d99ef21b4fea1caf9100bf0e141863f1d069e622a76ced81212493",
+   "privateKey": "441c77ac44a3d3389392f4fb8665016a0330de2b381dfa651b1f104de0eb27768b996009515e45bc680f16bf2a803f069735c66ea369211c09cb13d3d3e5ec05b60a004176d99ef21b4fea1caf9100bf0e141863f1d069e622a76ced81212493"
+  }
+ ],
+ "testVectors": [
+  {
+   "signatures": [
+    {
+     "signature": "cbe743bcda4e2c796a1aa93ae406c74a771ae26eb8c98f78db94a1ee4f684cdbdec0c94994daa1316afb7a70c5beaf8e",
+     "publicKey": "e0ec2483c6911c62d00c6c82d72d11b35732d71c1e65974e0181a4eafc83fe79e8684ab8ebaf7e48777fd622854a0310f3ad7ca11a71b0c116d787a31f1487c61db0b5bcab0b1db25d9c48cbc7dfb7c551288a4d052cb52a1ed4ab0911719903"
+    },
+    {
+     "signature": "155a05969edc07a2e6810db455d8bb6c1030fff50cc58a58179631441a7388c56d0633ec0adb4ba453519c2fa2d4cf0d",
+     "publicKey": "5ea3382c47ce05e0c3e424b9dc8383fc9a67f2ea29bf71f3b2b47f2687698a5faadd00a842a8d894331bde9f2d3e6810abe058658bc52ed643dffa535ab92ae9de5120f84aea38e400c7f1406a5223e0c320e2388d7cd54be75321f2fdbdd18e"
+    },
+    {
+     "signature": "7c516066c943f28a2cbf00f48ca76fca53635b47fa24fb55c691fda18a184479311cbf0a3b26b9a898eb044e0f93650a",
+     "publicKey": "15be2570b657f317775bb729d3b1fa9df4da0bc830de0239367161537bb8a276b2d428d84556bc3d1ba730fa0cdc6f026e5cb12eca554f27ecee3ea1927db625542f86a811f18b0bd131f66ffff7a8c0d0d3c80ecc3b3c3cdfadb393cb946309"
+    },
+    {
+     "signature": "23259bab379dbbde08eb891193b164c4da957d05277c92b6a6b44bbaff53d0e5d80ed91154b859305a93d370bf8af98c",
+     "publicKey": "cc13d958a8f81f7e3c80b43eaab4585a9a13990e6e2f3a7e59f0fbb869e507d9a6c1c6fc380cbade96f54dfbd5f4e4132a907804f4016072c7cbd9c4e3ab6042811f8c6641880725e339bf57e16d521bc4c150ae4f5a212971c3c6cc1468f00e"
+    },
+    {
+     "signature": "d99aa15c0536384b67d02a17ab6034d465643c51c16a3443a72148b5c4a9de6829978d142b398e992e8f14980e512708",
+     "publicKey": "441c77ac44a3d3389392f4fb8665016a0330de2b381dfa651b1f104de0eb27768b996009515e45bc680f16bf2a803f069735c66ea369211c09cb13d3d3e5ec05b60a004176d99ef21b4fea1caf9100bf0e141863f1d069e622a76ced81212493"
+    }
+   ],
+   "message": "6120707265646566696e6564206d65737361676520746f207369676e",
+   "aggregatedSignature": "f8a5eec45362673145078eae97831d8a658b953d500b62c4f3542294a10f84b49ffd0612212f315eedb391fce5c90a96",
+   "errorMessage": "noError",
+   "testName": "TestShouldWork"
+  }
+ ]
+}
\ No newline at end of file
diff --git a/signing/mcl/multisig/vectors_test.go b/signing/mcl/multisig/vectors_test.go
new file mode 100644
index 0000000..aef643b
--- /dev/null
+++ b/signing/mcl/multisig/vectors_test.go
@@ -0,0 +1,195 @@
+package multisig
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"os"
+	"testing"
+
+	"github.com/multiversx/mx-chain-core-go/hashing/blake2b"
+	"github.com/stretchr/testify/require"
+
+	crypto "github.com/multiversx/mx-chain-crypto-go"
+	"github.com/multiversx/mx-chain-crypto-go/signing"
+	"github.com/multiversx/mx-chain-crypto-go/signing/mcl"
+	"github.com/multiversx/mx-chain-crypto-go/signing/mcl/multisig/testData"
+)
+
+const blsHashSize = 16
+
+// TestVector defines the data structure used to unmarshal the JSON file
+type TestVector struct {
+	testName      string
+	message       []byte
+	publicKeys    []crypto.PublicKey
+	signatures    [][]byte
+	aggregatedSig []byte
+	expectedError error
+}
+
+func TestAggregateSignaturesKOSK(t *testing.T) {
+	t.Parallel()
+
+	lls := &BlsMultiSignerKOSK{}
+
+	err := testData.GenerateJSONFileKOSKForAggregateSignaturesTests(lls)
+	require.Nil(t, err)
+
+	suite := mcl.NewSuiteBLS12()
+	testVectors, err := createTestSetup(suite, "testData/multisigKOSKAggSig.json")
+	require.Nil(t, err)
+
+	for _, testVector := range testVectors {
+		testVectorCopy := testVector
+
+		t.Run(testVectorCopy.testName, func(t *testing.T) {
+			returnedVal, err := lls.AggregateSignatures(suite, testVectorCopy.signatures, testVectorCopy.publicKeys)
+			require.Equal(t, testVectorCopy.expectedError, err)
+			require.Equal(t, testVectorCopy.aggregatedSig, returnedVal)
+		})
+	}
+
+}
+
+func TestVerifyAggregatedSigKOSK(t *testing.T) {
+	t.Parallel()
+
+	lls := &BlsMultiSignerKOSK{}
+	err := testData.GenerateJSONFileKOSKForVerifyAggregatedSigTests(lls)
+	require.Nil(t, err)
+
+	suite := mcl.NewSuiteBLS12()
+	testVectors, err := createTestSetup(suite, "testData/multisigKOSKVerifyAggSig.json")
+	require.Nil(t, err)
+
+	for _, testVector := range testVectors {
+		testVectorCopy := testVector
+
+		t.Run(testVectorCopy.testName, func(t *testing.T) {
+			returnedErr := lls.VerifyAggregatedSig(suite, testVectorCopy.publicKeys, testVectorCopy.aggregatedSig, testVectorCopy.message)
+			require.Equal(t, testVectorCopy.expectedError, returnedErr)
+
+		})
+	}
+
+}
+
+func TestAggregateSignaturesNonKOSK(t *testing.T) {
+	t.Parallel()
+
+	hasher, err := blake2b.NewBlake2bWithSize(blsHashSize)
+	lls := &BlsMultiSigner{
+		Hasher: hasher,
+	}
+	require.Nil(t, err)
+
+	err = testData.GenerateJSONFileNonKOSKForAggregateSignaturesTests(lls)
+	require.Nil(t, err)
+
+	suite := mcl.NewSuiteBLS12()
+	testVectors, err := createTestSetup(suite, "testData/multisigNonKOSKAggSig.json")
+	require.Nil(t, err)
+
+	for _, testVector := range testVectors {
+		testVectorCopy := testVector
+
+		t.Run(testVectorCopy.testName, func(t *testing.T) {
+			returnedVal, err := lls.AggregateSignatures(suite, testVectorCopy.signatures, testVectorCopy.publicKeys)
+			require.Equal(t, testVectorCopy.expectedError, err)
+			require.Equal(t, testVectorCopy.aggregatedSig, returnedVal)
+		})
+	}
+
+}
+
+func TestVerifyAggregatedSigNonKOSK(t *testing.T) {
+	t.Parallel()
+
+	hasher, err := blake2b.NewBlake2bWithSize(blsHashSize)
+	require.Nil(t, err)
+	lls := &BlsMultiSigner{
+		Hasher: hasher,
+	}
+
+	err = testData.GenerateJSONFileNonKOSKForVerifyAggregatedSigTests(lls)
+	require.Nil(t, err)
+
+	suite := mcl.NewSuiteBLS12()
+	testVectors, err := createTestSetup(suite, "testData/multisigNonKOSKVerifyAggSig.json")
+	require.Nil(t, err)
+
+	for _, testVector := range testVectors {
+		testVectorCopy := testVector
+
+		t.Run(testVectorCopy.testName, func(t *testing.T) {
+			returnedErr := lls.VerifyAggregatedSig(suite, testVectorCopy.publicKeys, testVectorCopy.aggregatedSig, testVectorCopy.message)
+			require.Equal(t, testVectorCopy.expectedError, returnedErr)
+		})
+	}
+
+}
+
+func createTestSetup(suite crypto.Suite, filename string) ([]TestVector, error) {
+	var testVectors []TestVector
+
+	content, err := os.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+	var jsonContent testData.JSONFileContent
+	err = json.Unmarshal(content, &jsonContent)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, testVector := range jsonContent.TestVectors {
+		newTestVector := createNewTestVector(suite, testVector)
+		testVectors = append(testVectors, newTestVector)
+
+	}
+	return testVectors, nil
+
+}
+
+func createNewTestVector(suite crypto.Suite, testVector testData.TestVectorElement) TestVector {
+	kg := signing.NewKeyGenerator(suite)
+
+	testName := testVector.TestName
+	signatures := testVector.Signatures
+	aggregatedSig := testVector.AggregatedSignature
+
+	message := testVector.Message
+	expectedError := errors.New(testVector.ErrorMessage)
+	if testVector.ErrorMessage == "noError" {
+		expectedError = nil
+	}
+
+	pubKeys := make([]crypto.PublicKey, 0, len(signatures))
+	sigs := make([][]byte, 0, len(signatures))
+	for _, signature := range signatures {
+		decodedValue, _ := hex.DecodeString(signature.PublicKey)
+		pk, _ := kg.PublicKeyFromByteArray(decodedValue)
+		pubKeys = append(pubKeys, pk)
+
+		decodedValue, _ = hex.DecodeString(signature.Signature)
+		sigs = append(sigs, decodedValue)
+	}
+
+	var decodedAggregatedSig []byte
+	if len(aggregatedSig) > 0 {
+		decodedAggregatedSig, _ = hex.DecodeString(aggregatedSig)
+	}
+
+	decodedMessage, _ := hex.DecodeString(message)
+
+	return TestVector{
+		testName:      testName,
+		message:       decodedMessage,
+		publicKeys:    pubKeys,
+		signatures:    sigs,
+		aggregatedSig: decodedAggregatedSig,
+		expectedError: expectedError,
+	}
+
+}