# NTRU

In order to understand *hex* and *type* parameters read [Hash](https://github.com/liesware/coherence/wiki/Hash)

### NTRU

Description: Post-quantum public-key cryptosystem

Problem: The shortest vector problem in a lattice

Uses: Encryption

* It only supports "type":"string"

## How to ???

```python
import requests
import json
import os,binascii

def sending(message):
    url = 'http://127.0.0.1:6613/'
    response = requests.post(url, data=message)
    print response.content
    return response.content

ntru_gen=json.loads('{ "version": 1 , "algorithm":"NTRU", "parameter": "EES1499EP1", "operation":"gen"}')

data_js_n=sending(json.dumps(ntru_gen))
answ=json.loads(data_js_n)
print "Recived gen NTRU: \n" + (json.dumps(answ)) +"\n"
json_enc=json.loads('{ "version": 1 , "algorithm":"NTRU", "type":"string","parameter": "EES1499EP1","pubkey": "" ,"operation":"enc", "plaintext":""}')
json_enc["pubkey"]=answ["pubkey"]
json_enc["plaintext"]="Hello wolrd!"
data_js_n=sending(json.dumps(json_enc))
answ_1=json.loads(data_js_n)
print "Recived enc NTRU: \n" + (json.dumps(answ_1)) +"\n\n\n"
json_dec=json.loads('{ "version": 1 , "algorithm":"NTRU", "type":"string","parameter": "EES1499EP1","privkey": "" ,"operation":"dec", "plaintext":""}')
json_dec["privkey"]=answ["privkey"]
json_dec["pubkey"]=answ["pubkey"]
json_dec["plaintext"]=answ_1["result"]
data_js_n=sending(json.dumps(json_dec))
answ_2=json.loads(data_js_n)
print "Recived dec NTRU: \n" + (json.dumps(answ_2)) +"\n"
```

In this example we generate a NTRU key (EES1499EP1), we enc and dec *"Hello world!"* string.

On *"parameter"* can be one of*{"EES449EP1", "EES613EP1","EES761EP1","EES677EP1", "EES887EP1","EES1087EP1","EES1087EP2","EES1171EP1","EES1499EP1"}*

Json to gen

```javascript
{ "version": 1 , "algorithm":"NTRU", "parameter": "ntru flavor", "operation":"gen"}
```

Json to enc

```javascript
{ "version": 1 , "algorithm":"NTRU", "type":"string","parameter": "ntru flavor",
"pubkey": "your ntru hex pubkey" ,"operation":"enc", "plaintext":"your string","hex":BOOL}
```

Json to dec

```javascript
{ "version": 1 , "algorithm":"NTRU", "type":"string","parameter": "ntru flavor",
"privkey": "your ntru hex privkey","pubkey":"your ntru hex pubkey" ,"operation":"dec", 
"plaintext":"your enc hex string"}
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://coherence.3vidence.com/ntru.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.