diff --git a/lib/common/certificate.go b/lib/common/certificate.go
index a43c66d..9bd506f 100644
--- a/lib/common/certificate.go
+++ b/lib/common/certificate.go
@@ -34,6 +34,11 @@ func (certificate Certificate) Type() byte {
 	return certificate[0]
 }
 
+//
+// Look up the length of the certificate, reporting
+// errors if the certificate is invalid or the specified
+// length does not match the provided data.
+//
 func (certificate Certificate) Length() (int, error) {
 	if len(certificate) < 3 {
 		// log
@@ -52,6 +57,10 @@ func (certificate Certificate) Length() (int, error) {
 	return length, nil
 }
 
+//
+// Return the certificate data and any errors
+// encountered by Length.
+//
 func (certificate Certificate) Data() ([]byte, error) {
 	length, err := certificate.Length()
 	if err != nil {
@@ -81,6 +90,10 @@ func (certificate Certificate) SignatureSize() int {
 	return sizes[int(certificate.Type())]
 }
 
+//
+// Read a certificate from a slice of bytes, returning
+// any extra data on the end of the slice.
+//
 func ReadCertificate(data []byte) (Certificate, []byte, error) {
 	certificate := Certificate(data)
 	length, err := certificate.Length()
diff --git a/lib/common/date.go b/lib/common/date.go
index 6ca7878..0e5f658 100644
--- a/lib/common/date.go
+++ b/lib/common/date.go
@@ -6,6 +6,13 @@ import (
 
 type Date [8]byte
 
+//
+// Time takes the value stored in date as an 8
+// byte big-endian integer representing the
+// number of milliseconds since the beginning
+// of unix time and converts it to a go time.Time
+// struct.
+//
 func (date Date) Time() time.Time {
 	seconds := Integer(date[:])
 	return time.Unix(0, int64(seconds*1000000))
diff --git a/lib/common/integer.go b/lib/common/integer.go
index 2c9bf54..ba35c4c 100644
--- a/lib/common/integer.go
+++ b/lib/common/integer.go
@@ -4,6 +4,11 @@ import (
 	"encoding/binary"
 )
 
+//
+// Interpret a slice of bytes from length 1
+// to length 8 as a big-endian integer and
+// return an int representation.
+//
 func Integer(number []byte) int {
 	num_len := len(number)
 	if num_len < 8 {
diff --git a/lib/common/string.go b/lib/common/string.go
index 12138e0..7df5a10 100644
--- a/lib/common/string.go
+++ b/lib/common/string.go
@@ -6,6 +6,11 @@ import (
 
 type String []byte
 
+//
+// Look up the length of the string, reporting
+// errors if the string is invalid or the specified
+// length does not match the provided data.
+//
 func (str String) Length() (int, error) {
 	if len(str) == 0 {
 		// log
@@ -24,6 +29,10 @@ func (str String) Length() (int, error) {
 	return length, nil
 }
 
+//
+// Return the string data and any errors
+// encountered by Length.
+//
 func (str String) Data() (string, error) {
 	length, err := str.Length()
 	if err != nil {
@@ -39,6 +48,11 @@ func (str String) Data() (string, error) {
 	return string(str[1:]), nil
 }
 
+//
+// This function takes an unformatted go string
+// and returns a String and any errors encountered
+// during the encoding.
+//
 func ToI2PString(data string) (String, error) {
 	data_len := len(data)
 	if data_len >= 256 {
@@ -49,6 +63,10 @@ func ToI2PString(data string) (String, error) {
 	return String(i2p_string), nil
 }
 
+//
+// Read a string from a slice of bytes, returning
+// any extra data on the end of the slice.
+//
 func ReadString(data []byte) (String, []byte, error) {
 	str := String(data)
 	length, err := String(data).Length()