challenge: fix go vet warnings

4 files changed, 21 insertions, 21 deletions

diff --git a/challenge/c27.go b/challenge/c27.go
index 9de3415..3ee2cbe 100644
--- a/challenge/c27.go
+++ b/challenge/c27.go
@@ -55,7 +55,7 @@ func C27() {
 		// Check if `plain` high ASCII
 		for _, p := range plain {
 			if p >= 128 {
-				return plain, lib.CPError{"Has high ASCII values"}
+				return plain, lib.CPError{Err: "Has high ASCII values"}
 			}
 		}
 
diff --git a/challenge/c34.go b/challenge/c34.go
index 7377e20..5a209bb 100644
--- a/challenge/c34.go
+++ b/challenge/c34.go
@@ -128,18 +128,18 @@ func C34(args []string) {
 		// Try to read DH paramters from packet.
 		params := lib.StrSplitAt('+', packet)
 		if len(params) != 3 {
-			return nil, lib.CPError{"DH paramters invalid"}
+			return nil, lib.CPError{Err: "DH paramters invalid"}
 		}
 
 		// Try make DH for this client connection.
 		dh, ok := lib.NewDH(params[0], params[1])
 		if !ok {
-			return nil, lib.CPError{"DH initialization failed"}
+			return nil, lib.CPError{Err: "DH initialization failed"}
 		}
 		// Parse client's DH public key.
 		cPub, ok := new(big.Int).SetString(lib.StripSpaceChars(params[2]), 10)
 		if !ok {
-			return nil, lib.CPError{"DH public key invalid"}
+			return nil, lib.CPError{Err: "DH public key invalid"}
 		}
 
 		// Send server's DH public key for this connection.
@@ -237,7 +237,7 @@ func C34(args []string) {
 		g := "2"
 		dh, ok := lib.NewDH(p, g)
 		if !ok {
-			return conn, nil, lib.CPError{"DH initialization failed"}
+			return conn, nil, lib.CPError{Err: "DH initialization failed"}
 		}
 
 		// Make DH packet: p+g+pub.
@@ -257,7 +257,7 @@ func C34(args []string) {
 		// Parse server's DH public key.
 		sPub, ok := new(big.Int).SetString(lib.StripSpaceChars(spacket), 10)
 		if !ok {
-			return conn, nil, lib.CPError{"Server's DH key invalid"}
+			return conn, nil, lib.CPError{Err: "Server's DH key invalid"}
 		}
 
 		// Return server connection and DH session key.
@@ -330,13 +330,13 @@ func C34(args []string) {
 		// Try to read DH paramters from packet.
 		params := lib.StrSplitAt('+', packet)
 		if len(params) != 3 {
-			return []string{}, lib.CPError{"DH paramters invalid"}
+			return []string{}, lib.CPError{Err: "DH paramters invalid"}
 		}
 
 		// Try make a DH from params.
 		_, ok := lib.NewDH(params[0], params[1])
 		if !ok {
-			return []string{}, lib.CPError{"DH initialization failed"}
+			return []string{}, lib.CPError{Err: "DH initialization failed"}
 		}
 		return params, nil
 	}
@@ -353,7 +353,7 @@ func C34(args []string) {
 		// Make DH packet: p+g+p
 		pub, ok := new(big.Int).SetString(lib.StripSpaceChars(p), 16)
 		if !ok {
-			return conn, lib.CPError{"Unable to parse p"}
+			return conn, lib.CPError{Err: "Unable to parse p"}
 		}
 		packet := fmt.Sprintf("%v+%v+%v", p, g, pub)
 
diff --git a/challenge/c35.go b/challenge/c35.go
index a99b4c0..9710e7e 100644
--- a/challenge/c35.go
+++ b/challenge/c35.go
@@ -135,13 +135,13 @@ func C35(args []string) {
 		// Try to read DH paramters from packet.
 		params := lib.StrSplitAt('+', packet)
 		if len(params) != 2 {
-			return nil, lib.CPError{"DH paramters invalid"}
+			return nil, lib.CPError{Err: "DH paramters invalid"}
 		}
 
 		// Try make DH for this client connection.
 		dh, ok := lib.NewDH(params[0], params[1])
 		if !ok {
-			return nil, lib.CPError{"DH initialization failed"}
+			return nil, lib.CPError{Err: "DH initialization failed"}
 		}
 
 		// Send ACK to client.
@@ -158,7 +158,7 @@ func C35(args []string) {
 		// Parse client's DH public key.
 		cPub, ok := new(big.Int).SetString(lib.StripSpaceChars(packet), 10)
 		if !ok {
-			return nil, lib.CPError{"DH public key invalid"}
+			return nil, lib.CPError{Err: "DH public key invalid"}
 		}
 
 		// Send server's DH public key for this connection.
@@ -256,7 +256,7 @@ func C35(args []string) {
 		g := "2"
 		dh, ok := lib.NewDH(p, g)
 		if !ok {
-			return conn, nil, lib.CPError{"DH initialization failed"}
+			return conn, nil, lib.CPError{Err: "DH initialization failed"}
 		}
 
 		// Make DH packet: p+g
@@ -273,7 +273,7 @@ func C35(args []string) {
 		// Remove newline character.
 		spacket = spacket[:len(spacket)-1]
 		if spacket != "ACK" {
-			return conn, nil, lib.CPError{"ACK failed"}
+			return conn, nil, lib.CPError{Err: "ACK failed"}
 		}
 
 		// Send DH public key to server.
@@ -290,7 +290,7 @@ func C35(args []string) {
 		// Parse server's DH public key.
 		sPub, ok := new(big.Int).SetString(lib.StripSpaceChars(spacket), 10)
 		if !ok {
-			return conn, nil, lib.CPError{"Server's DH key invalid"}
+			return conn, nil, lib.CPError{Err: "Server's DH key invalid"}
 		}
 
 		// Return server connection and DH session key.
@@ -363,13 +363,13 @@ func C35(args []string) {
 		// Try to read DH paramters from packet.
 		params := lib.StrSplitAt('+', packet)
 		if len(params) != 2 {
-			return []string{}, lib.CPError{"DH paramters invalid"}
+			return []string{}, lib.CPError{Err: "DH paramters invalid"}
 		}
 
 		// Try make a DH from params.
 		_, ok := lib.NewDH(params[0], params[1])
 		if !ok {
-			return []string{}, lib.CPError{"DH initialization failed"}
+			return []string{}, lib.CPError{Err: "DH initialization failed"}
 		}
 		return params, nil
 	}
@@ -410,7 +410,7 @@ func C35(args []string) {
 		// Initialize DH.
 		dh, ok := lib.NewDH(p, g)
 		if !ok {
-			return conn, nil, lib.CPError{"DH initialization failed"}
+			return conn, nil, lib.CPError{Err: "DH initialization failed"}
 		}
 
 		// Make DH packet: p+g
@@ -427,7 +427,7 @@ func C35(args []string) {
 		// Remove newline character.
 		spacket = spacket[:len(spacket)-1]
 		if spacket != "ACK" {
-			return conn, nil, lib.CPError{"ACK failed"}
+			return conn, nil, lib.CPError{Err: "ACK failed"}
 		}
 
 		// Send DH public key to server.
@@ -444,7 +444,7 @@ func C35(args []string) {
 		// Parse server's DH public key.
 		sPub, ok := new(big.Int).SetString(lib.StripSpaceChars(spacket), 10)
 		if !ok {
-			return conn, nil, lib.CPError{"Server's DH key invalid"}
+			return conn, nil, lib.CPError{Err: "Server's DH key invalid"}
 		}
 
 		// Return server connection and server's DH public key.
diff --git a/challenge/c37.go b/challenge/c37.go
index 4ff10e8..ffcfe93 100644
--- a/challenge/c37.go
+++ b/challenge/c37.go
@@ -70,7 +70,7 @@ func C37(args []string) {
 				16,
 			)
 			if !ok {
-				fmt.Errorf("unable to process pub key")
+				fmt.Printf("unable to process pub key")
 				return
 			}
 			if pow == 1 {