diff --git a/crypto/pb/crypto.pb.go b/crypto/pb/crypto.pb.go
index 5fa7aec73f7fc0792cc38feb2615ec4bee086b53..072fad9c93a87a090ad13ed3466e50e1610d2731 100644
--- a/crypto/pb/crypto.pb.go
+++ b/crypto/pb/crypto.pb.go
@@ -9,6 +9,7 @@ import (
 	proto "github.com/gogo/protobuf/proto"
 	io "io"
 	math "math"
+	math_bits "math/bits"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -20,7 +21,7 @@ var _ = math.Inf
 // is compatible with the proto package it is being compiled against.
 // A compilation error at this line likely means your copy of the
 // proto package needs to be updated.
-const _ = proto.GoGoProtoPackageIsVersion2 // please upgrade the proto package
+const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
 type KeyType int32
 
@@ -87,7 +88,7 @@ func (m *PublicKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 		return xxx_messageInfo_PublicKey.Marshal(b, m, deterministic)
 	} else {
 		b = b[:cap(b)]
-		n, err := m.MarshalTo(b)
+		n, err := m.MarshalToSizedBuffer(b)
 		if err != nil {
 			return nil, err
 		}
@@ -139,7 +140,7 @@ func (m *PrivateKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 		return xxx_messageInfo_PrivateKey.Marshal(b, m, deterministic)
 	} else {
 		b = b[:cap(b)]
-		n, err := m.MarshalTo(b)
+		n, err := m.MarshalToSizedBuffer(b)
 		if err != nil {
 			return nil, err
 		}
@@ -200,7 +201,7 @@ var fileDescriptor_527278fb02d03321 = []byte{
 func (m *PublicKey) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
-	n, err := m.MarshalTo(dAtA)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
 	if err != nil {
 		return nil, err
 	}
@@ -208,26 +209,32 @@ func (m *PublicKey) Marshal() (dAtA []byte, err error) {
 }
 
 func (m *PublicKey) MarshalTo(dAtA []byte) (int, error) {
-	var i int
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PublicKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
 	_ = i
 	var l int
 	_ = l
-	dAtA[i] = 0x8
-	i++
-	i = encodeVarintCrypto(dAtA, i, uint64(m.Type))
 	if m.Data != nil {
-		dAtA[i] = 0x12
-		i++
+		i -= len(m.Data)
+		copy(dAtA[i:], m.Data)
 		i = encodeVarintCrypto(dAtA, i, uint64(len(m.Data)))
-		i += copy(dAtA[i:], m.Data)
+		i--
+		dAtA[i] = 0x12
 	}
-	return i, nil
+	i = encodeVarintCrypto(dAtA, i, uint64(m.Type))
+	i--
+	dAtA[i] = 0x8
+	return len(dAtA) - i, nil
 }
 
 func (m *PrivateKey) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
-	n, err := m.MarshalTo(dAtA)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
 	if err != nil {
 		return nil, err
 	}
@@ -235,30 +242,38 @@ func (m *PrivateKey) Marshal() (dAtA []byte, err error) {
 }
 
 func (m *PrivateKey) MarshalTo(dAtA []byte) (int, error) {
-	var i int
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PrivateKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
 	_ = i
 	var l int
 	_ = l
-	dAtA[i] = 0x8
-	i++
-	i = encodeVarintCrypto(dAtA, i, uint64(m.Type))
 	if m.Data != nil {
-		dAtA[i] = 0x12
-		i++
+		i -= len(m.Data)
+		copy(dAtA[i:], m.Data)
 		i = encodeVarintCrypto(dAtA, i, uint64(len(m.Data)))
-		i += copy(dAtA[i:], m.Data)
+		i--
+		dAtA[i] = 0x12
 	}
-	return i, nil
+	i = encodeVarintCrypto(dAtA, i, uint64(m.Type))
+	i--
+	dAtA[i] = 0x8
+	return len(dAtA) - i, nil
 }
 
 func encodeVarintCrypto(dAtA []byte, offset int, v uint64) int {
+	offset -= sovCrypto(v)
+	base := offset
 	for v >= 1<<7 {
 		dAtA[offset] = uint8(v&0x7f | 0x80)
 		v >>= 7
 		offset++
 	}
 	dAtA[offset] = uint8(v)
-	return offset + 1
+	return base
 }
 func (m *PublicKey) Size() (n int) {
 	if m == nil {
@@ -289,14 +304,7 @@ func (m *PrivateKey) Size() (n int) {
 }
 
 func sovCrypto(x uint64) (n int) {
-	for {
-		n++
-		x >>= 7
-		if x == 0 {
-			break
-		}
-	}
-	return n
+	return (math_bits.Len64(x|1) + 6) / 7
 }
 func sozCrypto(x uint64) (n int) {
 	return sovCrypto(uint64((x << 1) ^ uint64((int64(x) >> 63))))
@@ -534,6 +542,7 @@ func (m *PrivateKey) Unmarshal(dAtA []byte) error {
 func skipCrypto(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0
+	depth := 0
 	for iNdEx < l {
 		var wire uint64
 		for shift := uint(0); ; shift += 7 {
@@ -565,10 +574,8 @@ func skipCrypto(dAtA []byte) (n int, err error) {
 					break
 				}
 			}
-			return iNdEx, nil
 		case 1:
 			iNdEx += 8
-			return iNdEx, nil
 		case 2:
 			var length int
 			for shift := uint(0); ; shift += 7 {
@@ -589,55 +596,30 @@ func skipCrypto(dAtA []byte) (n int, err error) {
 				return 0, ErrInvalidLengthCrypto
 			}
 			iNdEx += length
-			if iNdEx < 0 {
-				return 0, ErrInvalidLengthCrypto
-			}
-			return iNdEx, nil
 		case 3:
-			for {
-				var innerWire uint64
-				var start int = iNdEx
-				for shift := uint(0); ; shift += 7 {
-					if shift >= 64 {
-						return 0, ErrIntOverflowCrypto
-					}
-					if iNdEx >= l {
-						return 0, io.ErrUnexpectedEOF
-					}
-					b := dAtA[iNdEx]
-					iNdEx++
-					innerWire |= (uint64(b) & 0x7F) << shift
-					if b < 0x80 {
-						break
-					}
-				}
-				innerWireType := int(innerWire & 0x7)
-				if innerWireType == 4 {
-					break
-				}
-				next, err := skipCrypto(dAtA[start:])
-				if err != nil {
-					return 0, err
-				}
-				iNdEx = start + next
-				if iNdEx < 0 {
-					return 0, ErrInvalidLengthCrypto
-				}
-			}
-			return iNdEx, nil
+			depth++
 		case 4:
-			return iNdEx, nil
+			if depth == 0 {
+				return 0, ErrUnexpectedEndOfGroupCrypto
+			}
+			depth--
 		case 5:
 			iNdEx += 4
-			return iNdEx, nil
 		default:
 			return 0, fmt.Errorf("proto: illegal wireType %d", wireType)
 		}
+		if iNdEx < 0 {
+			return 0, ErrInvalidLengthCrypto
+		}
+		if depth == 0 {
+			return iNdEx, nil
+		}
 	}
-	panic("unreachable")
+	return 0, io.ErrUnexpectedEOF
 }
 
 var (
-	ErrInvalidLengthCrypto = fmt.Errorf("proto: negative length found during unmarshaling")
-	ErrIntOverflowCrypto   = fmt.Errorf("proto: integer overflow")
+	ErrInvalidLengthCrypto        = fmt.Errorf("proto: negative length found during unmarshaling")
+	ErrIntOverflowCrypto          = fmt.Errorf("proto: integer overflow")
+	ErrUnexpectedEndOfGroupCrypto = fmt.Errorf("proto: unexpected end of group")
 )
diff --git a/go.mod b/go.mod
index 7c36895c68bd5224f1d4b6f706bc5a1ca3b9ee01..a6329551fee6da59b77bcead55f1c6ce4a298415 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/libp2p/go-libp2p-core
 require (
 	github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3
 	github.com/coreos/go-semver v0.3.0
-	github.com/gogo/protobuf v1.3.0
+	github.com/gogo/protobuf v1.3.1
 	github.com/ipfs/go-cid v0.0.3
 	github.com/jbenet/goprocess v0.1.3
 	github.com/libp2p/go-flow-metrics v0.0.1
diff --git a/go.sum b/go.sum
index d47658ad8a05c3ec9acf463ff7ca31969164c01a..6a06c8bb1df93c5cec0c184428a2f8f328fcfbc6 100644
--- a/go.sum
+++ b/go.sum
@@ -26,8 +26,8 @@ github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/gogo/protobuf v1.3.0 h1:G8O7TerXerS4F6sx9OV7/nRfJdnXgHZu/S/7F2SN+UE=
-github.com/gogo/protobuf v1.3.0/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
+github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
+github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 h1:ZgQEtGgCBiWRM39fZuwSd1LwSqqSW0hOdXCYYDX0R3I=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=