diff --git a/code/modules/integrated_electronics/core/printer.dm b/code/modules/integrated_electronics/core/printer.dm
index 77f0de7b043..59ef2d936b0 100644
--- a/code/modules/integrated_electronics/core/printer.dm
+++ b/code/modules/integrated_electronics/core/printer.dm
@@ -121,6 +121,8 @@
 			"name" = category,
 			"items" = null
 		)
+		if(cat_obj["name"] == "Illegal Parts" && !illegal_upgraded)
+			continue
 		var/list/circuit_list = SScircuit.circuit_fabricator_recipe_list[category]
 		var/list/items = list()
 		for(var/path in circuit_list)
@@ -226,6 +228,8 @@
 /obj/item/weapon/disk/integrated_circuit/upgrade/illegal
 	name = "integrated circuit printer upgrade disk - illegal designs"
 	desc = "Install this into your integrated circuit printer to enhance it.  This one adds new, but illegal designs to the printer."
+	icon_state = "upgrade_disk_illegal"
+	origin_tech = list(TECH_ENGINEERING = 3, TECH_DATA = 4, TECH_ILLEGAL = 1)
 
 // To be implemented later.
 /obj/item/weapon/disk/integrated_circuit/upgrade/clone
diff --git a/code/modules/integrated_electronics/subtypes/cryptography.dm b/code/modules/integrated_electronics/subtypes/cryptography.dm
new file mode 100644
index 00000000000..81bc3d150f0
--- /dev/null
+++ b/code/modules/integrated_electronics/subtypes/cryptography.dm
@@ -0,0 +1,89 @@
+/obj/item/integrated_circuit/cryptography
+	complexity = 3
+	inputs = list("input" = IC_PINTYPE_STRING)
+	outputs = list("result" = IC_PINTYPE_STRING)
+	activators = list("compute" = IC_PINTYPE_PULSE_IN, "on computed" = IC_PINTYPE_PULSE_OUT)
+	category_text = "Cryptography"
+	power_draw_per_use = 10
+
+// HASH FUNCTIONS
+
+/obj/item/integrated_circuit/cryptography/hash_md5
+	name = "MD5 hash circuit"
+	desc = "Message-Digest Algorithm 5"
+	extended_desc = "This circuit will take a string input and generates the MD5 hash of it."
+	icon_state = "template"
+	spawn_flags = IC_SPAWN_RESEARCH
+
+/obj/item/integrated_circuit/cryptography/hash_md5/do_work()
+	var/result = ""
+	for(var/datum/integrated_io/I in inputs)
+		I.pull_data()
+		if(!isnull(I.data))
+			result = md5(I.data)
+
+	set_pin_data(IC_OUTPUT, 1, result)
+	push_data()
+	activate_pin(2)
+
+/obj/item/integrated_circuit/cryptography/hash_sha1
+	name = "SHA1 hash circuit"
+	desc = "Secure Hash Algorithm 1"
+	extended_desc = "This circuit will take a string input and generates the SHA1 hash of it."
+	icon_state = "template"
+	spawn_flags = IC_SPAWN_RESEARCH
+	power_draw_per_use = 20
+
+/obj/item/integrated_circuit/cryptography/hash_sha1/do_work()
+	var/result = ""
+	for(var/datum/integrated_io/I in inputs)
+		I.pull_data()
+		if(!isnull(I.data))
+			result = sha1(I.data)
+
+	set_pin_data(IC_OUTPUT, 1, result)
+	push_data()
+	activate_pin(2)
+
+
+// ENCRYPTION/DECRYPTION
+
+/obj/item/integrated_circuit/cryptography/rot13
+	name = "rot13 circuit"
+	desc = "A very simple encryption circuit."
+	extended_desc = "The 'rotation' field will default to 13 if no custom number is supplied. This circuit rotates every letter by X in the alphabet."
+	icon_state = "template"
+	inputs = list(
+		"input" = IC_PINTYPE_STRING,
+		"rotation" = IC_PINTYPE_NUMBER
+		)
+	spawn_flags = IC_SPAWN_RESEARCH
+
+/obj/item/integrated_circuit/cryptography/rot13/do_work()
+	var/result = ""
+
+	var/input = get_pin_data(IC_INPUT, 1)
+	var/rotation = get_pin_data(IC_INPUT, 2)
+
+	var/string_len = length(input)
+
+	if(!isnum(rotation))
+		rotation = 13
+
+	for(var/i = 1, i <= string_len, i++)
+		var/ascii = text2ascii(input, i)
+		if(ascii >= 65 && ascii <= 90)
+			ascii += rotation
+			if(ascii > 90) 
+				ascii -= 26
+
+		else if(ascii >= 97 && ascii <= 122)
+			ascii += rotation
+			if(ascii > 122) 
+				ascii -= 26
+
+		result += ascii2text(ascii)
+
+	set_pin_data(IC_OUTPUT, 1, result)
+	push_data()
+	activate_pin(2)
\ No newline at end of file
diff --git a/code/modules/integrated_electronics/subtypes/illegal.dm b/code/modules/integrated_electronics/subtypes/illegal.dm
new file mode 100644
index 00000000000..d28a0e0dd99
--- /dev/null
+++ b/code/modules/integrated_electronics/subtypes/illegal.dm
@@ -0,0 +1,7 @@
+/obj/item/integrated_circuit/illegal
+	complexity = 3
+	inputs = list("input" = IC_PINTYPE_STRING)
+	outputs = list("result" = IC_PINTYPE_STRING)
+	activators = list("compute" = IC_PINTYPE_PULSE_IN, "on computed" = IC_PINTYPE_PULSE_OUT)
+	category_text = "Illegal Parts"
+	power_draw_per_use = 50
\ No newline at end of file
diff --git a/code/modules/integrated_electronics/subtypes/input.dm b/code/modules/integrated_electronics/subtypes/input.dm
index 855c01c5391..c4de28811ff 100644
--- a/code/modules/integrated_electronics/subtypes/input.dm
+++ b/code/modules/integrated_electronics/subtypes/input.dm
@@ -441,12 +441,19 @@
 	origin_tech = list(TECH_ENGINEERING = 2, TECH_DATA = 2, TECH_MAGNET = 2, TECH_BLUESPACE = 2)
 	power_draw_per_use = 50
 	var/datum/exonet_protocol/exonet = null
+	var/obj/machinery/exonet_node/node = null
+
+/obj/item/integrated_circuit/input/EPv2/proc/get_connection_to_tcomms()
+	if(node && node.on)
+		return can_telecomm(src,node)
+	return 0
 
 /obj/item/integrated_circuit/input/EPv2/New()
 	..()
 	exonet = new(src)
 	exonet.make_address("EPv2_circuit-\ref[src]")
 	desc += "<br>This circuit's EPv2 address is: [exonet.address]"
+	node = get_exonet_node()
 
 /obj/item/integrated_circuit/input/EPv2/Destroy()
 	if(exonet)
@@ -461,7 +468,15 @@
 	var/text = get_pin_data(IC_INPUT, 3)
 
 	if(target_address && istext(target_address))
-		exonet.send_message(target_address, message, text)
+		if(!get_connection_to_tcomms())
+			set_pin_data(IC_OUTPUT, 1, null)
+			set_pin_data(IC_OUTPUT, 2, "Error: Cannot connect to Exonet node.")
+			set_pin_data(IC_OUTPUT, 3, "error")
+
+			push_data()
+			activate_pin(2)
+		else
+			exonet.send_message(target_address, message, text)
 
 /obj/item/integrated_circuit/input/receive_exonet_message(var/atom/origin_atom, var/origin_address, var/message, var/text)
 	set_pin_data(IC_OUTPUT, 1, origin_address)
diff --git a/icons/obj/integrated_electronics/electronic_tools.dmi b/icons/obj/integrated_electronics/electronic_tools.dmi
index 975f2fc9a81..821265acccc 100644
Binary files a/icons/obj/integrated_electronics/electronic_tools.dmi and b/icons/obj/integrated_electronics/electronic_tools.dmi differ
diff --git a/vorestation.dme b/vorestation.dme
index be1923eada8..7a0cd277dd5 100644
--- a/vorestation.dme
+++ b/vorestation.dme
@@ -2493,7 +2493,9 @@
 #include "code\modules\integrated_electronics\subtypes\arithmetic.dm"
 #include "code\modules\integrated_electronics\subtypes\built_in.dm"
 #include "code\modules\integrated_electronics\subtypes\converters.dm"
+#include "code\modules\integrated_electronics\subtypes\cryptography.dm"
 #include "code\modules\integrated_electronics\subtypes\data_transfer.dm"
+#include "code\modules\integrated_electronics\subtypes\illegal.dm"
 #include "code\modules\integrated_electronics\subtypes\input.dm"
 #include "code\modules\integrated_electronics\subtypes\lists.dm"
 #include "code\modules\integrated_electronics\subtypes\logic.dm"