diff --git a/cryptor/rsa_private_example.pem b/cryptor/rsa_private_example.pem
index 9ff9856..90ef571 100644
--- a/cryptor/rsa_private_example.pem
+++ b/cryptor/rsa_private_example.pem
@@ -1,51 +1,51 @@
 -----BEGIN rsa private key-----
-MIIJKQIBAAKCAgEAuYcMNNn4v0OaL/Ufwj0pkChajjUm1Nb3OeU4bXX26i+khkXN
-y6KaoRzlAfsH1Fli4iv7x6c9cde4Q63R7WodvzcH1W2HKxQ3Ht6hkeS2RKgJEm8o
-/Pbzr10yaULwjVLXsTkG6ssIdQLw3zwz6XRDvyU66NbE3mNDIh1yAtJUmPoeRcA4
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-06D/7Ce1ZE+UZ2/i7hpkcdAD1PdY1c+FfmpsosZ/WVcvHUH65Fz1TR6YMz0poeBj
-27+CBziA6P1MKfBNpBx+UfHomK5O2356S90zqd5z0W6t1rkgLSPcR592yszAM72h
-+KHUtGB/rs6OUum4yfw3EVA4R4plO1lU50scUgwducOB7ihYSQPU87IPHcydWQ5N
-LobygxzqNYpIb0pPrLTBP1ZM9v6wY16xs6kCknmr3e7aQckxq17MuNIkewsCAwEA
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-zdR6eK+Ajevz4KG8YT+37VIQbOgr74KERwJFghNpasF6/VN6NESaP/AWwB1/MT/9
-TRAc7yz8QVIECbMM8NTpn1+fBr+cFsI+0IS9PdMPafBmRDrBU4GMieWGDmshYPd8
-hOu58UVCNoaVwvC6BpRGMmOh7eMV+xFhQlIWVRFZxrb2NzThtOoS6ohS4aq7dimE
-19+RZttogXZmdDApNZDFl6OXF6NSbZRyZCHYQXv3Drdc09Rw8G8tN+E/5Lv0mc+n
-mQ+Q95J46yC98szMnewvTRplJx/fL2zrZ+wus8RIA8PA7AZXNAs6DyWOZZEUB8JF
-+rKfeux7FcAySmdayx6rptKcqcya52zp3r2N37z4SREtyoKZFhtySykcEONZ+mIy
-Llbkey1gAmhGK0/xTAs8FJ3+xjIaMEwvrEUSVOCEE3Euf/albmdvVAoBVzkzP9bI
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+WBBhvfiRtU4bUhbcxf/TEZHfq0tzP02/SISBBAHOL+me9/cBfWMLRqbWJdUaovsx
+LzqCVjAJ7aiBbsSfuw3x5Ns36XcJGuIjQnc8kd7MfVwmOmwKnRooxoGyrwVY9upp
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+4PJ+Nwn5d/6W/fGaHkPWpbGHSBzwMRLUJwKCAQBiPAfbLKuB9u2HFxV33lQuBlMi
+HK6JhLoN0o0I5ICuC01IlOaAjAbdTAZdNXcuj9JPfS4tuLG3+nRueKJ5A7MHvwDG
+ZBvVq1q8kKnEl04yW4J/2SfjFk+Do2V3WR8vYjphOgd2pXP72IRw5YWW087VCKFY
+x2Cjuluapss8zdPR6lBxrrdvSCoysW154ALchgUeJAv4G9x/KPQBoBUkDXO4R6UJ
+a36nUMBO7XjkFeucU9npdOl9UEz3ZOE9mWLtck60lZofHoS/dPaY7hzAjetbtfDs
+J8sSwmHsb1DdOx5YSpEkg9aPrtShkChYoKOJFLKhpf7WGbVx2U7OBw71BCa5
 -----END rsa private key-----
diff --git a/cryptor/rsa_public_example.pem b/cryptor/rsa_public_example.pem
index d2f58b8..98918f7 100644
--- a/cryptor/rsa_public_example.pem
+++ b/cryptor/rsa_public_example.pem
@@ -1,14 +1,14 @@
 -----BEGIN rsa public key-----
-MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAuYcMNNn4v0OaL/Ufwj0p
-kChajjUm1Nb3OeU4bXX26i+khkXNy6KaoRzlAfsH1Fli4iv7x6c9cde4Q63R7Wod
-vzcH1W2HKxQ3Ht6hkeS2RKgJEm8o/Pbzr10yaULwjVLXsTkG6ssIdQLw3zwz6XRD
-vyU66NbE3mNDIh1yAtJUmPoeRcA4QMbMM+5P888Ht6ETsLVkMx1uFYALbGidlACB
-S7hyBtc0ibWjdAG9rSZg7E3MAhz5dRYmkGAJqSA4aHWL6FT2gXXkrP36D4+hbQA6
-UsBLxs5nM4Cl7fzdysJWv1suldiB84+gYRmiumsj/odwVcxxFcxI1sDgabzI5IKT
-waGLLz5hu+7in9lAIEqtfH/Ui5pfEw8qH1ymkLnlkSAtTZ4ByMaw869zP0AYnn1m
-p+dJ5Mo1mqy0+qZn2E4FITrAOgr306D/7Ce1ZE+UZ2/i7hpkcdAD1PdY1c+Ffmps
-osZ/WVcvHUH65Fz1TR6YMz0poeBj27+CBziA6P1MKfBNpBx+UfHomK5O2356S90z
-qd5z0W6t1rkgLSPcR592yszAM72h+KHUtGB/rs6OUum4yfw3EVA4R4plO1lU50sc
-UgwducOB7ihYSQPU87IPHcydWQ5NLobygxzqNYpIb0pPrLTBP1ZM9v6wY16xs6kC
-knmr3e7aQckxq17MuNIkewsCAwEAAQ==
+MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAof7+5KVH6s/ID7onVeuC
+PVGPIW6TiHHjDlxbYLdA/CyhTvR2Pk8JvX9BjBXLI/+jTWsyTUucwszu3MaVhIS/
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+976+2/4QgLReU3Ujeh8Q6oRwB8HRfPlD7aY+dGPMT16o1R3nhs2jwsGId812lw5q
+gjaYZJCXCBhQcZFs+1IM7c6GmIGXYIAcFDWiVsENqqesQO5tCA1UTTGtIa9kMYD/
+pwFK1ANVvrr2c6Qu/0UuBneawok76vDHTQCWmVcF0QIe5RaTj8YK9TaNAcQDPy9j
+M0jWxJE1EBuRpDtIymQIcgMpXwguerh9NuXNoGEVPn4mvlVfy+1TVGzws8WsZwY/
+LH07afdfIeDc1YwLadwq5S+wxuzwNuSCM9t2rIzfbRhorlg/lVDWqP8H6d9vF5MJ
+Y9kSiO3KgCSJLYfVl+Q+8asCAwEAAQ==
 -----END rsa public key-----
diff --git a/mathutil/mathutil.go b/mathutil/mathutil.go
index 11fc9dc..eac0239 100644
--- a/mathutil/mathutil.go
+++ b/mathutil/mathutil.go
@@ -145,10 +145,14 @@ func CeilToString[T constraints.Float | constraints.Integer](x T, n int) string
 
 // Max return max value of numbers.
 // Play: https://go.dev/play/p/cN8DHI0rTkH
-func Max[T constraints.Integer | constraints.Float](numbers ...T) T {
-	max := numbers[0]
+func Max[T constraints.Ordered](items ...T) T {
+	if len(items) < 1 {
+		panic("mathutil.Max: empty list")
+	}
 
-	for _, v := range numbers {
+	max := items[0]
+
+	for _, v := range items {
 		if max < v {
 			max = v
 		}
@@ -181,10 +185,14 @@ func MaxBy[T any](slice []T, comparator func(T, T) bool) T {
 
 // Min return min value of numbers.
 // Play: https://go.dev/play/p/21BER_mlGUj
-func Min[T constraints.Integer | constraints.Float](numbers ...T) T {
-	min := numbers[0]
+func Min[T constraints.Ordered](items ...T) T {
+	if len(items) < 1 {
+		panic("mathutil.min: empty list")
+	}
 
-	for _, v := range numbers {
+	min := items[0]
+
+	for _, v := range items {
 		if min > v {
 			min = v
 		}
diff --git a/mathutil/mathutil_test.go b/mathutil/mathutil_test.go
index 0252490..dd079ce 100644
--- a/mathutil/mathutil_test.go
+++ b/mathutil/mathutil_test.go
@@ -178,6 +178,7 @@ func TestMax(t *testing.T) {
 	assert.Equal(0, Max(0, 0))
 	assert.Equal(3, Max(1, 2, 3))
 	assert.Equal(1.4, Max(1.2, 1.4, 1.1, 1.4))
+	assert.Equal("abc", Max("a", "ab", "abc"))
 
 	type Integer int
 	assert.Equal(Integer(1), Max(Integer(1), Integer(0)))
@@ -212,6 +213,8 @@ func TestMin(t *testing.T) {
 	assert.Equal(0, Min(0, 0))
 	assert.Equal(1, Min(1, 2, 3))
 	assert.Equal(1.1, Min(1.2, 1.4, 1.1, 1.4))
+
+	assert.Equal("a", Min("a", "ab", "abc"))
 }
 
 func TestMinBy(t *testing.T) {