diff --git a/security/encr/encr.go b/security/encr/encr.go
index c4948c1..9fc1ab8 100644
--- a/security/encr/encr.go
+++ b/security/encr/encr.go
@@ -22,26 +22,26 @@ func init() {
 	// ENCR Types
 	encrTypes = make(map[string]ENCRType)
 
-	encrTypes[string_ENCR_AES_CBC_128] = &ENCR_AES_CBC{
+	encrTypes[String_ENCR_AES_CBC_128] = &ENCR_AES_CBC{
 		keyLength: 16,
 	}
-	encrTypes[string_ENCR_AES_CBC_192] = &ENCR_AES_CBC{
+	encrTypes[String_ENCR_AES_CBC_192] = &ENCR_AES_CBC{
 		keyLength: 24,
 	}
-	encrTypes[string_ENCR_AES_CBC_256] = &ENCR_AES_CBC{
+	encrTypes[String_ENCR_AES_CBC_256] = &ENCR_AES_CBC{
 		keyLength: 32,
 	}
 
 	// ENCR Kernel Types
 	encrKTypes = make(map[string]ENCRKType)
 
-	encrKTypes[string_ENCR_AES_CBC_128] = &ENCR_AES_CBC{
+	encrKTypes[String_ENCR_AES_CBC_128] = &ENCR_AES_CBC{
 		keyLength: 16,
 	}
-	encrKTypes[string_ENCR_AES_CBC_192] = &ENCR_AES_CBC{
+	encrKTypes[String_ENCR_AES_CBC_192] = &ENCR_AES_CBC{
 		keyLength: 24,
 	}
-	encrKTypes[string_ENCR_AES_CBC_256] = &ENCR_AES_CBC{
+	encrKTypes[String_ENCR_AES_CBC_256] = &ENCR_AES_CBC{
 		keyLength: 32,
 	}
 }
diff --git a/security/encr/encr_aes_cbc.go b/security/encr/encr_aes_cbc.go
index b5dd6f6..54eb1ea 100644
--- a/security/encr/encr_aes_cbc.go
+++ b/security/encr/encr_aes_cbc.go
@@ -14,20 +14,20 @@ import (
 )
 
 const (
-	string_ENCR_AES_CBC_128 string = "ENCR_AES_CBC_128"
-	string_ENCR_AES_CBC_192 string = "ENCR_AES_CBC_192"
-	string_ENCR_AES_CBC_256 string = "ENCR_AES_CBC_256"
+	String_ENCR_AES_CBC_128 string = "ENCR_AES_CBC_128"
+	String_ENCR_AES_CBC_192 string = "ENCR_AES_CBC_192"
+	String_ENCR_AES_CBC_256 string = "ENCR_AES_CBC_256"
 )
 
 func toString_ENCR_AES_CBC(attrType uint16, intValue uint16, bytesValue []byte) string {
 	if attrType == message.AttributeTypeKeyLength {
 		switch intValue {
 		case 128:
-			return string_ENCR_AES_CBC_128
+			return String_ENCR_AES_CBC_128
 		case 192:
-			return string_ENCR_AES_CBC_192
+			return String_ENCR_AES_CBC_192
 		case 256:
-			return string_ENCR_AES_CBC_256
+			return String_ENCR_AES_CBC_256
 		default:
 			return ""
 		}
diff --git a/security/esn/esn.go b/security/esn/esn.go
index efff931..f48bd47 100644
--- a/security/esn/esn.go
+++ b/security/esn/esn.go
@@ -12,16 +12,16 @@ var (
 )
 
 const (
-	string_ESN_ENABLE  string = "ESN_ENABLE"
-	string_ESN_DISABLE string = "ESN_DISABLE"
+	String_ESN_ENABLE  string = "ESN_ENABLE"
+	String_ESN_DISABLE string = "ESN_DISABLE"
 )
 
 func toString_ESN_ENABLE(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_ESN_ENABLE
+	return String_ESN_ENABLE
 }
 
 func toString_ESN_DISABLE(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_ESN_DISABLE
+	return String_ESN_DISABLE
 }
 
 func init() {
@@ -33,10 +33,10 @@ func init() {
 	// ESN Types
 	esnTypes = make(map[string]ESN)
 
-	esnTypes[string_ESN_ENABLE] = ESN{
+	esnTypes[String_ESN_ENABLE] = ESN{
 		needESN: true,
 	}
-	esnTypes[string_ESN_DISABLE] = ESN{
+	esnTypes[String_ESN_DISABLE] = ESN{
 		needESN: false,
 	}
 }
diff --git a/security/integ/auth_hmac_md5_96.go b/security/integ/auth_hmac_md5_96.go
index d868db5..37a7d3f 100644
--- a/security/integ/auth_hmac_md5_96.go
+++ b/security/integ/auth_hmac_md5_96.go
@@ -8,10 +8,10 @@ import (
 	"github.com/free5gc/ike/message"
 )
 
-const string_AUTH_HMAC_MD5_96 string = "AUTH_HMAC_MD5_96"
+const String_AUTH_HMAC_MD5_96 string = "AUTH_HMAC_MD5_96"
 
 func toString_AUTH_HMAC_MD5_96(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_AUTH_HMAC_MD5_96
+	return String_AUTH_HMAC_MD5_96
 }
 
 var (
diff --git a/security/integ/auth_hmac_sha1_96.go b/security/integ/auth_hmac_sha1_96.go
index ad3a8a7..6c18ca2 100644
--- a/security/integ/auth_hmac_sha1_96.go
+++ b/security/integ/auth_hmac_sha1_96.go
@@ -8,10 +8,10 @@ import (
 	"github.com/free5gc/ike/message"
 )
 
-const string_AUTH_HMAC_SHA1_96 string = "AUTH_HMAC_SHA1_96"
+const String_AUTH_HMAC_SHA1_96 string = "AUTH_HMAC_SHA1_96"
 
 func toString_AUTH_HMAC_SHA1_96(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_AUTH_HMAC_SHA1_96
+	return String_AUTH_HMAC_SHA1_96
 }
 
 var (
diff --git a/security/integ/auth_hmac_sha2_256_128.go b/security/integ/auth_hmac_sha2_256_128.go
index d0b3a4d..04dd077 100644
--- a/security/integ/auth_hmac_sha2_256_128.go
+++ b/security/integ/auth_hmac_sha2_256_128.go
@@ -8,10 +8,10 @@ import (
 	"github.com/free5gc/ike/message"
 )
 
-const string_AUTH_HMAC_SHA2_256_128 string = "AUTH_HMAC_SHA2_256_128"
+const String_AUTH_HMAC_SHA2_256_128 string = "AUTH_HMAC_SHA2_256_128"
 
 func toString_AUTH_HMAC_SHA2_256_128(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_AUTH_HMAC_SHA2_256_128
+	return String_AUTH_HMAC_SHA2_256_128
 }
 
 var (
diff --git a/security/integ/integ.go b/security/integ/integ.go
index f80f4f8..5888371 100644
--- a/security/integ/integ.go
+++ b/security/integ/integ.go
@@ -23,15 +23,15 @@ func init() {
 	// INTEG Types
 	integTypes = make(map[string]INTEGType)
 
-	integTypes[string_AUTH_HMAC_MD5_96] = &AUTH_HMAC_MD5_96{
+	integTypes[String_AUTH_HMAC_MD5_96] = &AUTH_HMAC_MD5_96{
 		keyLength:    16,
 		outputLength: 12,
 	}
-	integTypes[string_AUTH_HMAC_SHA1_96] = &AUTH_HMAC_SHA1_96{
+	integTypes[String_AUTH_HMAC_SHA1_96] = &AUTH_HMAC_SHA1_96{
 		keyLength:    20,
 		outputLength: 12,
 	}
-	integTypes[string_AUTH_HMAC_SHA2_256_128] = &AUTH_HMAC_SHA2_256_128{
+	integTypes[String_AUTH_HMAC_SHA2_256_128] = &AUTH_HMAC_SHA2_256_128{
 		keyLength:    32,
 		outputLength: 16,
 	}
@@ -39,15 +39,15 @@ func init() {
 	// INTEG Kernel Types
 	integKTypes = make(map[string]INTEGKType)
 
-	integKTypes[string_AUTH_HMAC_MD5_96] = &AUTH_HMAC_MD5_96{
+	integKTypes[String_AUTH_HMAC_MD5_96] = &AUTH_HMAC_MD5_96{
 		keyLength:    16,
 		outputLength: 12,
 	}
-	integKTypes[string_AUTH_HMAC_SHA1_96] = &AUTH_HMAC_SHA1_96{
+	integKTypes[String_AUTH_HMAC_SHA1_96] = &AUTH_HMAC_SHA1_96{
 		keyLength:    20,
 		outputLength: 12,
 	}
-	integKTypes[string_AUTH_HMAC_SHA2_256_128] = &AUTH_HMAC_SHA2_256_128{
+	integKTypes[String_AUTH_HMAC_SHA2_256_128] = &AUTH_HMAC_SHA2_256_128{
 		keyLength:    32,
 		outputLength: 16,
 	}
diff --git a/security/prf/prf.go b/security/prf/prf.go
index c52fdbc..c889033 100644
--- a/security/prf/prf.go
+++ b/security/prf/prf.go
@@ -21,15 +21,15 @@ func init() {
 	// PRF Types
 	prfTypes = make(map[string]PRFType)
 
-	prfTypes[string_PRF_HMAC_MD5] = &PRF_HMAC_MD5{
+	prfTypes[String_PRF_HMAC_MD5] = &PRF_HMAC_MD5{
 		keyLength:    16,
 		outputLength: 16,
 	}
-	prfTypes[string_PRF_HMAC_SHA1] = &PRF_HMAC_SHA1{
+	prfTypes[String_PRF_HMAC_SHA1] = &PRF_HMAC_SHA1{
 		keyLength:    20,
 		outputLength: 20,
 	}
-	prfTypes[string_PRF_HMAC_SHA2_256] = &PRF_HMAC_SHA2_256{
+	prfTypes[String_PRF_HMAC_SHA2_256] = &PRF_HMAC_SHA2_256{
 		keyLength:    32,
 		outputLength: 32,
 	}
diff --git a/security/prf/prf_hmac_md5.go b/security/prf/prf_hmac_md5.go
index 6fab236..6d22411 100644
--- a/security/prf/prf_hmac_md5.go
+++ b/security/prf/prf_hmac_md5.go
@@ -8,10 +8,10 @@ import (
 	"github.com/free5gc/ike/message"
 )
 
-const string_PRF_HMAC_MD5 string = "PRF_HMAC_MD5"
+const String_PRF_HMAC_MD5 string = "PRF_HMAC_MD5"
 
 func toString_PRF_HMAC_MD5(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_PRF_HMAC_MD5
+	return String_PRF_HMAC_MD5
 }
 
 var _ PRFType = &PRF_HMAC_MD5{}
diff --git a/security/prf/prf_hmac_sha1.go b/security/prf/prf_hmac_sha1.go
index ddd0198..39b9a41 100644
--- a/security/prf/prf_hmac_sha1.go
+++ b/security/prf/prf_hmac_sha1.go
@@ -8,10 +8,10 @@ import (
 	"github.com/free5gc/ike/message"
 )
 
-const string_PRF_HMAC_SHA1 string = "PRF_HMAC_SHA1"
+const String_PRF_HMAC_SHA1 string = "PRF_HMAC_SHA1"
 
 func toString_PRF_HMAC_SHA1(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_PRF_HMAC_SHA1
+	return String_PRF_HMAC_SHA1
 }
 
 var _ PRFType = &PRF_HMAC_SHA1{}
diff --git a/security/prf/prf_hmac_sha2_256.go b/security/prf/prf_hmac_sha2_256.go
index c26d2d7..453e08e 100644
--- a/security/prf/prf_hmac_sha2_256.go
+++ b/security/prf/prf_hmac_sha2_256.go
@@ -8,10 +8,10 @@ import (
 	"github.com/free5gc/ike/message"
 )
 
-const string_PRF_HMAC_SHA2_256 string = "PRF_HMAC_SHA2_256"
+const String_PRF_HMAC_SHA2_256 string = "PRF_HMAC_SHA2_256"
 
 func toString_PRF_HMAC_SHA2_256(attrType uint16, intValue uint16, bytesValue []byte) string {
-	return string_PRF_HMAC_SHA2_256
+	return String_PRF_HMAC_SHA2_256
 }
 
 var _ PRFType = &PRF_HMAC_SHA2_256{}