lightning-bolts/04-onion-routing.md

# BOLT #4: Onion Routing Protocol

## Overview

This document describes the construction of an onion routed packet that is used to route a payment from a _origin node_ to a _final node_, over a number of intermediate nodes, called _hops_.

The routing schema is based on the
[Sphinx](http://www.cypherpunks.ca/~iang/pubs/Sphinx_Oakland09.pdf)
construction, and is extended with a per-hop payload.

Intermediate nodes forwarding the message can verify the integrity of
the packet, and can learn about which node they should forward the
packet to. They cannot learn about which other nodes, besides their
predecessor or successor, are part of this route, nor can they learn
the length of the route and their position within it. The packet is
obfuscated at each hop, so that a network level attacker cannot
associate packets belonging to the same route, i.e., packets belonging
to a route do not share any identifying information. Notice that this
does not preclude the possibility to associate packets by performing a
traffic analysis.

The route is constructed by the sender, which knows a public key of
each intermediate node. Knowing the intermediate node's public key
allows the sender to create a shared secret using ECDH for each
intermediate node, including the final recipient. The shared secret is then
used to generate a _pseudo-random stream_ of bytes to obfuscate the
packet, and a number of _keys_ used to encrypt the payload and compute
HMACs ensuring integrity at each hop.

This specification describes version 0 of the packet format and
routing mechanism. Should a node receive a higher version packet that
it does not implement it MUST report a route failure to the sending
node and discard the packet.

## Conventions

There are a number of conventions we will adhere to throughout the document:

 - The maximum route length is limited to 20 hops.
 - HMAC: the integrity verification of the packet is based on Keyed-Hash Message Authentication Code as defined by the [FIPS 198 Standard](http://csrc.nist.gov/publications/fips/fips198-1/FIPS-198-1_final.pdf)/[RFC 2104](https://tools.ietf.org/html/rfc2104), using `SHA256` as hashing algorithm.
 - Elliptic Curve: for all computations involving elliptic curves, the
   Bitcoin curve, [`secp256k1`](http://www.secg.org/sec2-v2.pdf), is used.
 - Pseudo-Random Stream: [`ChaCha20`](https://tools.ietf.org/html/rfc7539) is used to generate a pseudo-random byte stream.
   For the generation we use a fixed null-nonce (`0x0000000000000000`), a key derived from a shared secret and a `0x00`-byte stream of the desired output size as message.
 - We use the terms _hop_ and _node_ interchangeably.
 - A _peer_ is a direct neighbor of the processing node in the overlay network.

## Key Generation

A number of encryption and verification keys are derived from the shared secret:

 - _rho_: used as key when generating the pseudo-random byte stream
   used to obfuscate the per-hop information.
 - _mu_: used during the HMAC generation.
 - _um_: used during error reporting.

The key generation takes a key-type (_rho_=`0x72686F`, _mu_=`0x6d75` or _um_=`0x756d`) and a 32 byte secret as inputs and returns a 32 byte key.

Keys are generated by computing an HMAC, with `SHA256` as hashing algorithm, using the key-type, i.e., _rho_, _mu_ or _um_, as HMAC-key and the 32 byte shared secret as the message.
The resulting HMAC is then returned as the key.

Notice that the key-type does not include a C-style `0x00` termination-byte, e.g., the length of the _rho_ key-type is 3 bytes, not 4.

## Pseudo Random Byte Stream

The pseudo-random byte stream is used to obfuscate the packet at each hop of the path, so that each hop may only recover the address of the next hop as well as the HMAC for the next hop.
The pseudo-random byte stream is generated by encrypting a `0x00`-byte stream of the required length with `ChaCha20`, initialized with a key derived from the shared secret and a zero-nonce (`0x00000000000000`).
The use of a fixed nonce is safe since the keys are never reused.

## Packet Structure

The packet consists of 4 parts:
 
 - A `version` byte
 - A 33-byte compressed `secp256k1` `public_key`, used during the shared secret generation
 - A 1300-byte `hops_data` consisting of twenty fixed size packets containing information for each hop
   as they forward the message.
 - A 32-byte `HMAC` used to verify the packet's integrity.

The overall structure of the packet is depicted below. The network format of the packet consists of the individual parts being serialized into one contiguous byte-stream and then transferred to the recipient of the packet. Due to the fixed size of the packet it does not need to be prefixed by its length when transferred over a connection.

1. type: `onion_packet`
2. data:
   * [`1`:`version`]
   * [`33`:`public_key`]
   * [`20*65`:`hops_data`]
   * [`32`:`hmac`]

For this specification `version` has a constant value of `0x00`.

The `hops_data` field is a structure that holds obfuscated versions of the next hop's address, transfer information and the associated HMAC.  It is 1300 bytes long, and has the following structure:

1. type: `hops_data`
2. data:
   * [`1`:`realm`]
   * [`32`:`per_hop`]
   * [`32`:`HMAC`]
   * ...
   * `filler`

Where the `realm`, `HMAC` and `per_hop` (whose contents depend on `realm`) are
repeated for each hop, and `filler` consists of obfuscated deterministically generated
padding. For details about how the `filler` is generated please see
below. In addition, `hops_data` is incrementally
obfuscated at each hop.

The `realm` byte determines the format of the `per_hop`; so far
only `realm` 0 is defined, and for that, the `per_hop` format is:

1. type: `per_hop` (for `realm` 0)
2. data:
   * [`8`:`channel_id`]
   * [`8`:`amt_to_forward`]
   * [`4`:`outgoing_cltv_value`]
   * [`12`:`padding`]

Using the `per_hop`, the sender is able to precisely specify the path and
structure of the HTLCs forwarded at each hop. As the `per_hop` is
protected under the packet-wide HMAC, the information within 
is fully authenticated with each pair-wise relationship between
the HTLC sender, and each intermediate node in the path.  Using this end-to-end
authentication, forwarding nodes are able to ensure that the incoming node
didn't forward an ill-crafted HTLC by cross-checking the HTLC parameters with
the values as specified within the `per_hop`.

Field Description: 

   * `channel_id` - The channel used to route the message, which implies the
     next hop is the other end of the channel.

   * `amt_to_forward` - The amount in milli-satoshi to forward to the next
     (outgoing) hop specified within the routing information. 
     
     This value MUST factor in the computed fee for this particular hop. When
     processing an incoming Sphinx packet along with the HTLC message it's
     encapsulated within, if the following inequality doesn't hold, then the
     HTLC should be rejected as it indicates a prior node in the path has
     deviated from the specified parameters:

        incoming_htlc_amt - fee >= amt_to_forward

     Where `fee` is calculated according to the receiving node's advertised fee
     schema as described in [BOLT 7](https://github.com/lightningnetwork/lightning-rfc/blob/master/07-routing-gossip.md#htlc-fees), or 0 if this node is the
	 final hop.

   * `outgoing_cltv_value` - The CLTV value that the _outgoing_ HTLC carrying
     the packet should have. 

        cltv_expiry - cltv_expiry_delta = outgoing_cltv_value

     Inclusion of this field allows a node to both authenticate the information
     specified by the original sender and the parameters of the HTLC forwarded,
	 and ensure the original sender is using the current `cltv_expiry_delta` value.
     If there is no next hop, `cltv_expiry_delta` is zero.
     If the values don't correspond, then the HTLC should be failed+rejected as
     this indicates the incoming node has tampered with the intended HTLC
     values, or the origin has an obsolete `cltv_expiry_delta` value.
     The node MUST be consistent in responding to an unexpected
     `outgoing_cltv_value` whether it is the final hop or not, to avoid
     leaking that information.

   * `padding` - for future use, and also to ensure that future non-0-`realm`
     `per_hop` won't change the overall `hops_data` size.

Nodes forwarding HTLCs MUST construct the outgoing HTLC as specified within
`per_hop`.  Otherwise, deviation from the specified HTLC parameters
may lead to extraneous routing failure.

### Payload for the last node

The last node in the route could just discard its payload since it will not forward payments. However, when building the route, the original
sender must use a payload for the last node with the following values:
* `outgoing_cltv_value` is set to the final expiry specified by the recipient
* `amt_to_forward` is set to the final amount specified by the recipient

This way, the final node can check these values and return errors if needed, which will defeat probing attacks by the next to last node which could
try to find out if the next node is the last one (by re-sending HTLCs with different amounts/expiries):

The last node will extract its onion payload from the HTLC it has received and compare its values to the HTLC values.
See the [Returning Errors](#returning-errors) section below for more details.

## Packet Construction

Assuming a _sender node_ `n_0` wants to route a packet to a _final recipient_ `n_r`.
The sender computes a route `{n_0, n_1, ..., n_{r-1}, n_r}`, where `n_0` is the sender itself and `n_r` is the final recipient.
The nodes `n_i` and `n_{i+1}` MUST be peers in the overlay network.
The sender gathers the public keys for `n_1` to `n_r` and generates a random 32 byte `sessionkey`.
Optionally the sender may pass in _associated data_, i.e., data that the packet commits to, but is not included in the packet itself.
Associated data will be included in the HMACs and has to match the associated data provided during integrity verification at each hop.

For each node the sender computes an _ephemeral public key_, a _shared secret_ and a _blinding factor_.
The blinding factor is used at each hop to blind the ephemeral public key for the next hop.
The node receiving the header will perform ECDH with the ephemeral public key and its private key to derive the same shared secret.
However, when generating the packet we do not have access to the node's private key.
Hence, we use the commutative property of multiplication and blind the node's public key with all previous blinding factors and perform ECDH using the node's blinded public key and the `sessionkey`.

The transformations at hop `k` are given by the following:

 - The shared secret `ss_k` is computed by first blinding the node's public key `nodepk_k` with all previous blinding factors `{b_1, ..., b_{k-1}}`, if any, and then executing ECDH with the blinded public key and the `sessionkey`.
 - The blinding factor is the `SHA256` hash of the concatenation between the node's public key `nodepk_k` and the hop's shared secret `ss_k`.
   Before concatenation the node's public key is serialized in the compressed format.
 - The ephemeral public key `epk_k` is computed  by blinding the previous hop's ephemeral public key `epk_{k-1}` with the previous hop's blinding factor `b_{k-1}`.

This recursive algorithm is initialized by setting the first hop's (`k=1`) ephemeral public key to the public key corresponding with the `sessionkey`, i.e., `secp256k1` is used to derive a public key for the randomly selected `sessionkey`.

The sender then iteratively computes the ephemeral public keys, shared secrets and blinding factors for nodes `{n_2, ..., n_r}`.

Once the sender has all the required information it can construct the packet.
Constructing a packet routed over `r` hops requires `r` 32 byte ephemeral public keys, `r` 32 byte shared secrets, `r` 32 byte blinding factors and `r` 65 byte `per_hop` payloads.
The construction returns one 1366 byte packet and the first hop's address.

The packet construction is performed in reverse order of the route, i.e., the last hop's operations are applied first.

The packet is initialized with 1366 `0x00` bytes. 

A 65-byte filler is generated with the shared secret:
See below for details on filler generation.

For each hop in the route in reverse order the sender applies the
following operations:

 - It generates a _rho_-key and _mu_-key using the hop's shared secret.
 - The `hops_data` field is right-shifted by 65 bytes, discarding the last 65 bytes that exceed the 1300 bytes.
   The `version`, `channel_id`, `amt_to_forward`, `outgoing_cltv_value`, `padding` and `HMAC` are copied into
   the following 65 bytes.
   The _rho_-key is used to generate 1300 bytes of pseudo-random byte stream and applied with `XOR` to the `hops_data` field.
   Should this be the last hop, i.e., the first iteration, then the tail of the `hops_data` field is overwritten with the routing info `filler`.
 - The next HMAC is computed over the concatenated `hops_data` and associated data, with the _mu_-key as HMAC-key.

The final value for the HMAC is the HMAC as it should be sent to the first hop.

The packet generation returns the serialized packet, consisting of the `version` byte, the ephemeral pubkey for the first hop, the HMAC for the first hop, the obfuscated `hops_data`.

The following code implements the packet construction in Go:

```Go
func NewOnionPacket(paymentPath []*btcec.PublicKey, sessionKey *btcec.PrivateKey,
	hopsData []HopData, assocData []byte) (*OnionPacket, error) {

	numHops := len(paymentPath)
	hopEphemeralPubKeys := make([]*btcec.PublicKey, numHops)
	hopSharedSecrets := make([][sha256.Size]byte, numHops)
	hopBlindingFactors := make([][sha256.Size]byte, numHops)

	hopEphemeralPubKeys[0] = sessionKey.PubKey()
	hopSharedSecrets[0] = generateSharedSecret(paymentPath[0], sessionKey)
	hopBlindingFactors[0] = computeBlindingFactor(hopEphemeralPubKeys[0], hopSharedSecrets[0][:])

	for i := 1; i <= numHops-1; i++ {
		hopEphemeralPubKeys[i] = blindGroupElement(hopEphemeralPubKeys[i-1],
			hopBlindingFactors[i-1][:])
		yToX := blindGroupElement(paymentPath[i], sessionKey.D.Bytes())
		hopSharedSecrets[i] = sha256.Sum256(multiScalarMult(yToX, hopBlindingFactors[:i]).SerializeCompressed())

		hopBlindingFactors[i] = computeBlindingFactor(hopEphemeralPubKeys[i],
			hopSharedSecrets[i][:])
	}

	// Generate the padding, called "filler strings" in the paper.
	filler := generateHeaderPadding("rho", numHops, hopDataSize, hopSharedSecrets)

	// Allocate and initialize fields to zero-filled slices
	var mixHeader [routingInfoSize]byte
	var nextHmac [hmacSize]byte

	// Now we compute the routing information for each hop, along with a
	// MAC of the routing info using the shared key for that hop.
	for i := numHops - 1; i >= 0; i-- {
		rhoKey := generateKey("rho", hopSharedSecrets[i])
		muKey := generateKey("mu", hopSharedSecrets[i])

		hopsData[i].HMAC = nextHmac

		// Shift and obfuscate routing info
		streamBytes := generateCipherStream(rhoKey, numStreamBytes)

		rightShift(mixHeader[:], hopDataSize)
		buf := &bytes.Buffer{}
		hopsData[i].Encode(buf)
		copy(mixHeader[:], buf.Bytes())
		xor(mixHeader[:], mixHeader[:], streamBytes[:routingInfoSize])

		// We need to overwrite these so every node generates a correct padding
		if i == numHops-1 {
			copy(mixHeader[len(mixHeader)-len(filler):], filler)
		}

		packet := append(mixHeader[:], assocData...)
		nextHmac = calcMac(muKey, packet)
	}

	packet := &OnionPacket{
		Version:      0x01,
		EphemeralKey: hopEphemeralPubKeys[0],
		RoutingInfo:  mixHeader,
		HeaderMAC:    nextHmac,
	}
	return packet, nil
}
```

## Packet Forwarding

Upon receiving a packet, a node compares the version byte of the packet with its supported versions and aborts otherwise.
This specification is limited to `version` `0` packets and the structure of future versions may change.
The receiving node then splits the packet into its fields.

The node MUST check that the ephemeral public key is on the `secp256k1` curve.
Should this not be the case the node MUST abort processing the packet and report a route failure to the sender.

The node then computes the shared secret as described below, using the private key corresponding to its public key and the ephemeral key from the packet.

The node MUST detect a duplicated routing info which it has already forwarded or redeemed locally; it MAY immediately redeem the HTLC using the preimage (if known), otherwise it MUST abort processing and report a route failure.  This prevents a node on the route from retrying a payment multiple times and attempting to track its progress by traffic analysis.  Note that this could be done using a log of previous shared secrets or HMACs, which can be forgotten once that HTLC would not be accepted anyway (eg. once `outgoing_cltv_value` has passed).  Such a log may use a probabilistic data structure, but MUST rate-limit commitments as necessary to constrain the worst-case storage requirements or false positives of this log.

The shared secret is used to compute a _mu_-key.  The node then computes the HMAC of the `hops_data` using the _mu_-key.
The resulting HMAC is compared with the HMAC from the packet.
Should the computed HMAC and the HMAC from the packet differ then the node MUST abort processing and report a route failure.
Comparison of the computed HMAC and the HMAC from the packet MUST be time-constant to avoid leaking information.

At this point the node can generate a _rho_-key and a _gamma_-key.

The routing info is deobfuscated and the information about the next hop is extracted.
In order to do so the node copies the `hops_data` field, appends 65 `0x00` bytes and generates 1365 pseudo-random bytes using the _rho_-key and applies it using `XOR` to the copy of the `hops_data`
The first 65 bytes of the resulting routing info are `per_hop` field for the next hop.  The next 1300 bytes is the `hops_data` for the outgoing packet.

If the `realm` is unknown, then the node MUST drop the packet and signal a route failure.

A special `per_hop` `HMAC` value of 32 `0x00` bytes indicates that the currently processing hop is the intended recipient and that the packet should not be forwarded.

Should the HMAC not indicate route termination and the next hop be a peer of the current node, then the new packet is assembled by blinding the ephemeral key with the current node's public key and shared secret, and serializing the `hops_data`.
The resulting packet is then forwarded to the addressed peer.
The addressed peer MUST be a direct neighbor of the node processing the packet.
Should the processing node not have a peer with the matching address, then it MUST drop the packet and signal a route failure.

## Shared secret

The sender performs ECDH with each hop of the route in order to establish a secret.
For each message a new _sessionkey_ is generated.
The sessionkey is a 32 byte EC private key.
The shared secret creation receives a public key and a 32 byte secret as input and returns a 32 byte secret as output.

In the packet generation phase the secret is the `sessionkey` and the public key is the node's public key, blinded with all previous blinding factors.
In the processing phase the secret is the node's private key and the public key is the ephemeral public key from the packet, which has been incrementally blinded by the predecessors.

The public key is multiplied by the secret, using to the `secp256k1` curve.
The DER compressed representation of the multiplication result is serialized and hashed using `SHA256`.
The resulting hash is returned as the shared secret.
Notice that this is the ECDH variant implemented in `libsecp256k1`.

## Filler Generation

Upon receiving a packet, each node extracts the information destined for that node from the route info and the per-hop payload.
The extraction is done by deobfuscating and left-shifting the field.
This would make the field shorter at each hop, allowing an attacker to deduce the route length.
For this reason the field is padded before forwarding.
Since the padding is part of the HMAC the sender will have to generate an identical padding in order to compute the HMACs correctly for each hop.
The filler is also used to pad the field-length in case the selected route is shorter than the maximum allowed route length.

Before deobfuscating the `hops_data`, the node pads it with 65 `0x00` bytes, such that the total length is `(20 + 1) * 65`.
It then generates the pseudo-random byte stream of matching length and applies it with `XOR` to the `hops_data`.
This deobfuscates the information destined for it, and simultaneously obfuscates the added
`0x00`-bytes at the end.

In order to compute the correct HMAC, the sender has to generate the `hops_data` at the hop.
This also includes the incrementally obfuscated padding added by each hop.
The incrementally obfuscated padding is called the `filler`.

The following code shows how the filler is generated:

```Go
func generateFiller(key string, numHops int, hopSize int, sharedSecrets [][sharedSecretSize]byte) []byte {
	fillerSize := uint((numMaxHops + 1) * hopSize)
	filler := make([]byte, fillerSize)

	// The last hop does not obfuscate, it's not forwarding anymore.
	for i := 0; i < numHops-1; i++ {

		// Left-shift the field
		copy(filler[:], filler[hopSize:])

		// Zero-fill the last hop
		copy(filler[len(filler)-hopSize:], bytes.Repeat([]byte{0x00}, hopSize))

		// Generate pseudo-random byte stream
		streamKey := generateKey(key, sharedSecrets[i])
		streamBytes := generateCipherStream(streamKey, fillerSize)

		// Obfuscate
		xor(filler, filler, streamBytes)
	}

	// Cut filler down to the correct length (numHops+1)*hopSize
	// bytes will be prepended by the packet generation.
	return filler[(numMaxHops-numHops+2)*hopSize:]
}
```

Notice that this implementation is for demonstration purposes only, the filler can be generated much more efficiently.
The last hop does not obfuscate the filler since it will not forward the packet and will not extract an HMAC for any followup hops.

## Blinding EC Points

In order to vary the ephemeral public key (the EC point) between hops, it is blinded at each hop. 
The inputs for the blinding process are the EC point to be blinded, the node's public key and a 32 byte shared secret, while the output is a single EC point, representing the blinded element.

Blinding is done by computing a blinding factor from the node's public key and the shared secret for that hop.
The blinding factor is the result of serializing the node's public key into its compressed format, appending the shared secret and computing the `SHA256` hash.
The blinded EC point then is the result of the scalar multiplication between the EC point and the blinding factor.

## Returning Errors

The protocol includes a simple mechanism to return encrypted error messages to the origin node.
The returned messages may either be failures reported by any intermediate hop, or the final node.
The format of the forward packet is not usable for the return path, since no node other than the origin has the required information.  Note that these error messages are not reliable, as they are not placed on-chain in the case of node failure.

Intermediate hops store the shared secret from the forward path and reuse it to obfuscate the error packet on each hop.
In addition each node locally stores the previous hop it received the forward packet from, in order to determine where to send an eventual return packet.
The node returning the message builds a return packet consisting of the following fields:

1. data:
   * [`32`:`hmac`]
   * [`2`:`failure_len`]
   * [`failure_len`:`failuremsg`]
   * [`2`:`pad_len`]
   * [`pad_len`:`pad`]

Where `hmac` is an HMAC authenticating the remainder of the packet, with a key using the above key generation with key type "_um_", `failuremsg` is defined below, and `pad` as extra bytes to conceal length.

The node SHOULD set `pad` such that the `failure_len` plus `pad_len` is equal to 128.
This is 28 bytes longer than then the longest currently-defined message.

The node then generates a new key, using the key type `ammag`.
This key is then used to generate a pseudo-random stream, which is then applied to the packet using `XOR`.

The obfuscation step is repeated by every node on the return path.
Upon receiving a packet the node will generate its `ammag`, generate the pseudo-random byte stream and apply it to the packet before forwarding.

The origin node detects that it is the final hop of the return message since it was the origin of the corresponding forward packet.
Having the shared secrets of all intermediate nodes it can unwrap the packet until the HMAC is a valid HMAC for the packet, which also identifies the sender of the return message.

The association between forward and return packet is handled outside of the protocol, e.g., by association to an HTLC in a payment channel.

### Failure Messages

The failure message encapsulated in `failuremsg` has identical format to
a normal message: two byte type (`failure_code`) followed by data suitable
for that type. The following `failure_code` values are supported.  A node MUST select one of
these codes when creating an error message, and MUST include the
appropriate data.

In the case of more than one error, a node SHOULD select the first one
listed.

The top byte of `failure_code` can be read as a set of flags:
* 0x8000 (BADONION): unparsable onion, encrypted by previous node.
* 0x4000 (PERM): permanent failure (otherwise transient)
* 0x2000 (NODE): node failure (otherwise channel)
* 0x1000 (UPDATE): new channel update enclosed

Any node MAY return one of the following errors:

If the `realm` byte is unknown:

1. type: PERM|1 (`invalid_realm`)

If an otherwise unspecified transient error occurs for the entire
node:

1. type: NODE|2 (`temporary_node_failure`)

If an otherwise unspecified permanent error occurs for the entire
node:

1. type: PERM|NODE|2 (`permanent_node_failure`)

If a node has requirement advertised in its `node_announcement`
`features` which were not present in the onion:

1. type: PERM|NODE|3 (`required_node_feature_missing`)

A forwarding node MAY return one of the following errors, the final
node MUST NOT:

If the onion `version` byte is unknown:

1. type: BADONION|PERM|4 (`invalid_onion_version`)
2. data:
   * [`32`:`sha256_of_onion`]

If the onion HMAC is incorrect:

1. type: BADONION|PERM|5 (`invalid_onion_hmac`)
2. data:
   * [`32`:`sha256_of_onion`]

If the ephemeral key in the onion is unparsable:

1. type: BADONION|PERM|6 (`invalid_onion_key`)
2. data:
   * [`32`:`sha256_of_onion`]

If an otherwise unspecified transient error occurs for the outgoing
channel (eg. channel capacity reached, too many in-flight htlc):

1. type: UPDATE|7 (`temporary_channel_failure`)
2. data:
   * [`2`:`len`]
   * [`len`:`channel_update`]

If an otherwise unspecified permanent error occurs for the outgoing
channel (eg. channel (recently) closed):

1. type: PERM|8 (`permanent_channel_failure`)

If the outgoing channel has requirement advertised in its
`channel_announcement` `features` which were not present in the onion:

1. type: PERM|9 (`required_channel_feature_missing`)

	If the next peer specified by the onion is not known:

1. type: PERM|10 (`unknown_next_peer`)

If the HTLC does not reach the current minimum amount, we tell them
the amount of the incoming HTLC and the current channel setting for
the outgoing channel:

1. type: UPDATE|11 (`amount_below_minimum`)
2. data:
   * [`8`:`htlc_msat`]
   * [`2`:`len`]
   * [`len`:`channel_update`]

If the HTLC does not pay sufficient fee, we tell them the amount of
the incoming HTLC and the current channel setting for the outgoing
channel:

1. type: UPDATE|12 (`fee_insufficient`)
2. data:
   * [`8`:`htlc_msat`]
   * [`2`:`len`]
   * [`len`:`channel_update`]

If `outgoing_cltv_value` does not match the `update_add_htlc`'s
`cltv_expiry` minus `cltv_expiry_delta` for the outgoing channel, we
tell them the `cltv_expiry` and the current channel setting for the
outgoing channel:

1. type: UPDATE|13 (`incorrect_cltv_expiry`)
2. data:
   * [`4`:`cltv_expiry`]
   * [`2`:`len`]
   * [`len`:`channel_update`]

If the ctlv-expiry is too near, we tell them the the current channel
setting for the outgoing channel:

1. type: UPDATE|14 (`expiry_too_soon`)
2. data:
   * [`2`:`len`]
   * [`len`:`channel_update`]
   
If the channel is disabled, we tell them the the current channel
setting for the outgoing channel:
   
1. type: UPDATE|20 (`channel_disabled`)
2. data:
   * [`2`: `flags`]
   * [`2`:`len`]
   * [`len`:`channel_update`]

The final node may return one of the following errors, intermediate
nodes MUST NOT:

If the payment hash has already been paid, the final node MAY treat
the payment hash as unknown, or may succeed in accepting the HTLC.
If the payment hash is unknown, the final node MUST fail the HTLC:

1. type: PERM|15 (`unknown_payment_hash`)

If the amount paid is less than the amount expected, the final node
MUST fail the HTLC.  If the amount paid is more than twice the amount
expected, the final node SHOULD fail the HTLC.  This allows the sender
to reduce information leakage by altering the amount, without allowing
accidental gross overpayment:

1. type: PERM|16 (`incorrect_payment_amount`)

If the `cltv_expiry` is too low, the final node MUST fail the HTLC:

1. type: 17 (`final_expiry_too_soon`)

If the `outgoing_cltv_value` does not match the `ctlv_expiry` of the
HTLC at the final hop:

1. type: 18 (`final_incorrect_cltv_expiry`)
2. data:
   * [`4`:`cltv_expiry`]

If the `amt_to_forward` is higher than `incoming_htlc_amt` of
the HTLC at the final hop:

1. type: 19 (`final_incorrect_htlc_amount`)
2. data:
   * [`4`:`incoming_htlc_amt`]

### Receiving Failure Codes

A node MUST ignore any extra bytes in `failuremsg`.

If node sending the error is the final node:
* If the PERM bit is set, the origin node SHOULD fail the payment,
  otherwise it MAY retry the payment if the error code is understood
  and valid.  (In particular, `final_expiry_too_soon` can occur if the
  block height has changed since sending, `temporary_node_failure`
  could resolve within a few seconds).

Otherwise, the node sending the error is an intermediate node:
* If the NODE bit is set, the origin node SHOULD remove all channels
  connected with the sending node from consideration.
  * If the PERM bit is not set, the origin node SHOULD restore the
    channels as it sees new `channel_update`s.
* Otherwise, if UPDATE is set, and the `channel_update` is valid
  and more recent than the `channel_update` used to send the payment:
  * The origin node MAY treat the `channel_update` as invalid if it
    should not have caused the failure.
  * Otherwise, the origin node SHOULD apply the `channel_update`.
  * The origin node MAY queue the `channel_update` for broadcast.
* Otherwise, the origin node SHOULD eliminate the channel outgoing
  from the sending node from consideration.
  * If the PERM bit is not set, the origin node SHOULD restore the
    channel as it sees a new `channel_update`.
* The origin node SHOULD then retry routing and sending the payment.

The origin node MAY use the data specified in the various types of
failure for debugging purposes.

## Test Vector

### Packet Creation

The following is an in-depth trace of the packet creation, including intermediate data.


#### Parameters

	pubkey[0] 0x02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619
	pubkey[1] 0x0324653eac434488002cc06bbfb7f10fe18991e35f9fe4302dbea6d2353dc0ab1c
	pubkey[2] 0x027f31ebc5462c1fdce1b737ecff52d37d75dea43ce11c74d25aa297165faa2007
	pubkey[3] 0x032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991
	pubkey[4] 0x02edabbd16b41c8371b92ef2f04c1185b4f03b6dcd52ba9b78d9d7c89c8f221145

	nhops = 5/20
	sessionkey = 0x4141414141414141414141414141414141414141414141414141414141414141
	associated data = 0x4242424242424242424242424242424242424242424242424242424242424242

The HMAC is omitted in the following `hop_data` since it is likely filled by the onion construction. Hence the values below are the `realm`, the `short_channel_id`, the `amt_to_forward`, the `outgoing_cltv` and the 16 bytes `padding`. These were initialized by byte-filling the `short_channel_id` to the respective position in the route, and by settings `amt_to_forward` and `outgoing_cltv` to the position in the route, starting with 0.

	hop_payload[0] = 0x000000000000000000000000000000000000000000000000000000000000000000
	hop_payload[1] = 0x000101010101010101000000010000000100000000000000000000000000000000
	hop_payload[2] = 0x000202020202020202000000020000000200000000000000000000000000000000
	hop_payload[3] = 0x000303030303030303000000030000000300000000000000000000000000000000
	hop_payload[4] = 0x000404040404040404000000040000000400000000000000000000000000000000

#### Per-Hop Information

	hop_shared_secret[0] = 0x53eb63ea8a3fec3b3cd433b85cd62a4b145e1dda09391b348c4e1cd36a03ea66
	hop_blinding_factor[0] = 0x2ec2e5da605776054187180343287683aa6a51b4b1c04d6dd49c45d8cffb3c36
	hop_ephemeral_pubkey[0] = 0x02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619

	hop_shared_secret[1] = 0xa6519e98832a0b179f62123b3567c106db99ee37bef036e783263602f3488fae
	hop_blinding_factor[1] = 0xbf66c28bc22e598cfd574a1931a2bafbca09163df2261e6d0056b2610dab938f
	hop_ephemeral_pubkey[1] = 0x028f9438bfbf7feac2e108d677e3a82da596be706cc1cf342b75c7b7e22bf4e6e2

	hop_shared_secret[2] = 0x3a6b412548762f0dbccce5c7ae7bb8147d1caf9b5471c34120b30bc9c04891cc
	hop_blinding_factor[2] = 0xa1f2dadd184eb1627049673f18c6325814384facdee5bfd935d9cb031a1698a5
	hop_ephemeral_pubkey[2] = 0x03bfd8225241ea71cd0843db7709f4c222f62ff2d4516fd38b39914ab6b83e0da0

	hop_shared_secret[3] = 0x21e13c2d7cfe7e18836df50872466117a295783ab8aab0e7ecc8c725503ad02d
	hop_blinding_factor[3] = 0x7cfe0b699f35525029ae0fa437c69d0f20f7ed4e3916133f9cacbb13c82ff262
	hop_ephemeral_pubkey[3] = 0x031dde6926381289671300239ea8e57ffaf9bebd05b9a5b95beaf07af05cd43595

	hop_shared_secret[4] = 0xb5756b9b542727dbafc6765a49488b023a725d631af688fc031217e90770c328
	hop_blinding_factor[4] = 0xc96e00dddaf57e7edcd4fb5954be5b65b09f17cb6d20651b4e90315be5779205
	hop_ephemeral_pubkey[4] = 0x03a214ebd875aab6ddfd77f22c5e7311d7f77f17a169e599f157bbcdae8bf071f4

#### Per-Packet Information

	filler = 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

#### Wrapping the Onion

	rhokey[4] = 0x034e18b8cc718e8af6339106e706c52d8df89e2b1f7e9142d996acf88df8799b
	mukey[4] = 0x8e45e5c61c2b24cb6382444db6698727afb063adecd72aada233d4bf273d975a
	routing_info[4] (unencrypted) = 0x00040404040404040400000004000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
	routing_info[4] (encrypted) = 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
	hmac_data[4] = 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
	hmac[4] = 0x42c10947e06bda75b35ac2a9e38005479a6feac51468712e751c71a1dcf3e31b

	rhokey[3] = 0xcbe784ab745c13ff5cffc2fbe3e84424aa0fd669b8ead4ee562901a4a4e89e9e
	mukey[3] = 0x5052aa1b3d9f0655a0932e50d42f0c9ba0705142c25d225515c45f47c0036ee9
	routing_info[3] (unencrypted) = 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
	routing_info[3] (encrypted) = 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
	hmac_data[3] = 0x35dd8ba6f4e53e2f0372992045827fc994c3312b54591844fc713c0cca433626a09629ccb8c0e8f28648628269f29e8bcd5941429852a5e34fdfe080f74b0f19ffaf3e17e529ce3c0c58316f255e42848df14bce0781a4653c84ac8f58bf89671cd0d4b692e9e42584a52509e03f8769bb4ef6a0f6f4002c81011da7f5f9a8da9b19bd25cb25aeb3873c5fa95396b56900847794a97935e542637ef5f42f088c6e24e8e95de7be71d110872c84a60a53bbd789f3a58c1072c5fbb84192dd5f780deb14bdbbf458be297eb3244499a7921db98912625c88350cb29e71ca8d788bfb9bd11146e48659b0d86afe13b47685ec49d36e57292d819442ba516d365be31e7980c0e7b14f40807393b1391d9b83c30191d4bfe49c143da2848d2d7bfd54c32bdfdaefcd4cb84ea895e2305745d2ae257b0414563224af66f3b25d3d451bdd8331670e9dcac78b0690c4ae849d0bd8e956dbc56b5a8114008e9dc54f1252544a45861521efd6376b6c0fb34c1c433b677c08d6bf5356e81772bfeed5a894b590859cd409dedd1cd9881c3b8caed81d4d8d834dbd3e870a39e69d6a1ce2dc15df8f8c34d64d292b0b99bf17bb92b263176b65634dc8f368cf7b558fef5b259964f42ec94eeac74d0abd829baa9b04f89ea3606074a4aace03e7f2217f2dec855f4028392f64f0baddd178d56d84cab16c8484633f7c5e8e7f8651ce8a7f5ce1ca3a966562a0a2a7247d105a3114ab2adbd10cfd70b2765113c42e4d1cbcb8721a719f46b25d8579a670be085d1afd2d2e541c4a27bdfffe49674798cf690f28bf4f58ec1495561be071d1c94156f15c95f3426a7409680ef8cf335a0d4786bbb0bf108589c3c8baf10f04dc7f8beda2f70117f28c771a83890d4e1c47903d642fef8a93a216576f377db3ad5be3abe7eaa924e1e7de9ac88e07177e57cad41ef5a561f6bdb741961eddee56f3d9aef9fc4e52343f2efda3a2d40b8d2b4afa735cd5655d3014d21b41eba3a8cf34a8c29cbf94dfb9a4312ee0851c6e32896b33d52d991560e3ae97c769071453a4969374aecf7423f07ee17ce71111dc925294b0130249ad00d49e26dbfddcaf214dc8356cee3a0d7486fa6144c6c826be0892ceea30e52d7b64a13b08eda3e991f37e210ccd216108c847adb58df3b2a53553689f5119e41b4f4f221474c21e197d8a13e9cf7cf23875a0dbc6ddaeca9eb6d95add2a0054528d9dc03d59bc108157291b4caa0faa53f2511bec3088a164a0768d38d7fe3281ea8459abbe3a5b5f43c697e5cbdc995832220a3c6fcf1e82bd35f4b94b13cc9312efc3ca4e3c8199e862c551fa7916e3cb0ad17ba24e456fcd2159f9e81628c508da4c2de4825100fee1c3226d1d431a740d2d8ab0c04953b073d9a20919e0f2d03e97b3f34a1644cbeeab7d0c78d898e8c523fbccc75ffc329fafe45288e21c82817e23589d0c6db453be7d3f8ecfa0ae1d24ae80c63511193c718195255a576c1b43c8d941ba22f6d9f743a7dd558e08ac2262fd67056d60e837edd3e21ce23ef27d48c9180d845ce8c5d6d4c488fcf55af99aef02f3bdf6a07833660628a672b878f8b15427189e49bf2d9e0e7e63e3c5632d9ef1e412e9bbd732b616a353097e90494a098df6a21729f1d3658f91b1bde4aaaae58530ab0e402fc10eb0910c07cace1afd0aacb579690e6dcbc184025e4160cf4de3e47106339046724d098b5b7b92f5a2bb33c11f86d4953f372fdd9ebc260b0ee2e391420c4b11145bd439954834d9a79e78abc57e03d3ee20d239d8a13014976e3f057ab3c38ca79ee81ff8849d94dca37b0920cc3e724242424242424242424242424242424242424242424242424242424242424242
	hmac[3] = 0x4e888d0cc6a90e7f857af18ac858834ac251d0d1c196d198df48a0c5bf816803

	rhokey[2] = 0x11bf5c4f960239cb37833936aa3d02cea82c0f39fd35f566109c41f9eac8deea
	mukey[2] = 0xcaafe2820fa00eb2eeb78695ae452eba38f5a53ed6d53518c5c6edf76f3f5b78
	routing_info[2] (unencrypted) = 0x0002020202020202020000000200000002000000000000000000000000000000004e888d0cc6a90e7f857af18ac858834ac251d0d1c196d198df48a0c5bf81680335dd8ba6f4e53e2f0372992045827fc994c3312b54591844fc713c0cca433626a09629ccb8c0e8f28648628269f29e8bcd5941429852a5e34fdfe080f74b0f19ffaf3e17e529ce3c0c58316f255e42848df14bce0781a4653c84ac8f58bf89671cd0d4b692e9e42584a52509e03f8769bb4ef6a0f6f4002c81011da7f5f9a8da9b19bd25cb25aeb3873c5fa95396b56900847794a97935e542637ef5f42f088c6e24e8e95de7be71d110872c84a60a53bbd789f3a58c1072c5fbb84192dd5f780deb14bdbbf458be297eb3244499a7921db98912625c88350cb29e71ca8d788bfb9bd11146e48659b0d86afe13b47685ec49d36e57292d819442ba516d365be31e7980c0e7b14f40807393b1391d9b83c30191d4bfe49c143da2848d2d7bfd54c32bdfdaefcd4cb84ea895e2305745d2ae257b0414563224af66f3b25d3d451bdd8331670e9dcac78b0690c4ae849d0bd8e956dbc56b5a8114008e9dc54f1252544a45861521efd6376b6c0fb34c1c433b677c08d6bf5356e81772bfeed5a894b590859cd409dedd1cd9881c3b8caed81d4d8d834dbd3e870a39e69d6a1ce2dc15df8f8c34d64d292b0b99bf17bb92b263176b65634dc8f368cf7b558fef5b259964f42ec94eeac74d0abd829baa9b04f89ea3606074a4aace03e7f2217f2dec855f4028392f64f0baddd178d56d84cab16c8484633f7c5e8e7f8651ce8a7f5ce1ca3a966562a0a2a7247d105a3114ab2adbd10cfd70b2765113c42e4d1cbcb8721a719f46b25d8579a670be085d1afd2d2e541c4a27bdfffe49674798cf690f28bf4f58ec1495561be071d1c94156f15c95f3426a7409680ef8cf335a0d4786bbb0bf108589c3c8baf10f04dc7f8beda2f70117f28c771a83890d4e1c47903d642fef8a93a216576f377db3ad5be3abe7eaa924e1e7de9ac88e07177e57cad41ef5a561f6bdb741961eddee56f3d9aef9fc4e52343f2efda3a2d40b8d2b4afa735cd5655d3014d21b41eba3a8cf34a8c29cbf94dfb9a4312ee0851c6e32896b33d52d991560e3ae97c769071453a4969374aecf7423f07ee17ce71111dc925294b0130249ad00d49e26dbfddcaf214dc8356cee3a0d7486fa6144c6c826be0892ceea30e52d7b64a13b08eda3e991f37e210ccd216108c847adb58df3b2a53553689f5119e41b4f4f221474c21e197d8a13e9cf7cf23875a0dbc6ddaeca9eb6d95add2a0054528d9dc03d59bc108157291b4caa0faa53f2511bec3088a164a0768d38d7fe3281ea8459abbe3a5b5f43c697e5cbdc995832220a3c6fcf1e82bd35f4b94b13cc9312efc3ca4e3c8199e862c551fa7916e3cb0ad17ba24e456fcd2159f9e81628c508da4c2de4825100fee1c3226d1d431a740d2d8ab0c04953b073d9a20919e0f2d03e97b3f34a1644cbeeab7d0c78d898e8c523fbccc75ffc329fafe45288e21c82817e23589d0c6db453be7d3f8ecfa0ae1d24ae80c63511193c718195255a576c1b43c8d941ba22f6d9f743a7dd558e08ac2262fd67056d60e837edd3e21ce23ef27d48c9180d845ce8c5d6d4c488fcf55af99aef02f3bdf6a07833660628a672b878f8b15427189e49bf2d9e0e7e63e3c5632d9ef1e412e9bbd732b616a353097e90494a098df6a21729f1d3658f91b1bde4aaaae58530ab0e402fc10eb0910c07cace1afd0aacb579690e6dcbc184025e4160cf4de3e47106339046724d098b5b7b92f5a2bb33c11f86d4
	routing_info[2] (encrypted) = 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
	hmac_data[2] = 0xe22ca641baa077154733abc586fae578ea0ed4c1851d0554235171e45e1e2a1868352b14951972fbeec9ffa500e74d24fd6d3b925c191c3454b97f518d68585db436277ec6404d85da476af5cfbfe7a392d4b8c931b57629c04ff70c08e51fa8d73e8ef55fd23b09430d4807dbdc4a7419c97b2e46d0568ca77526944e7c6a615475faea10de1025016f6fcb6f685ebdaf55c7908fd926f531d27e206307f7c9086355a351298fd6ed1f05d8724a6b159f52ed4cb988cde07f1d0eb0384803511b480ed31a1ecb7320bbd98da168ae64de73347d59df8ed0588aba661dc2d0bba2bc74ac0d2c479f466ee73def4a32cd806b0966b8f535e742c6a907af0f3dad003016db95194d381109c53499efcf4d868677c3a6dc4a184eccc2198aec260673a801814e60405670f557e618bb3b5df1e51cc90d995d0832b307c102b3fd1d083f52794ccb5a185885280dbd9e36ce64ddf320b6a7e340180e4f525c682bcd1f9cfa3ae5bbd8cdbd83e3d291e98606a7890bd8abbcf57aea1492fc1d6c876cad86446fc85b2db47ff2c6ea384fdda8bc53e81152687a702318c91f657253403612393ec7f864ddf5e807497cb88816f736f08a593d8d1e2c46c13675de2b2aa8c383b8610a5c772bbcf831e426f750c6358e623d9938890aa1d70297c4e4d238b14967f48da074ca469212336a77a2fe0fc80dc2ecd59a2ca389440cb2c1f9835786ad7e1f5bf3ceb27c8abe10178bffcbd888a9b31b9b9a5e308cefe00bdc25c82597dc22ff814b4dcb717be6ec6d87cf25dbb9fde6726461d504d4b9707d708238415ca3dc6e86d3738b902ff4a449597fcac06757fd97e0fe52c1addf7b34731366e2a5694883c60f4c9676ea6167a9fbf8b7d64932676e11fd38f7338e8954236ae31dbd7e2732d74a16b4d0809229ce44e696ceb383c41375ea0e40686f4e0c3967fa22a9e8a2ebb637816c8d1875edf86b1a4998b8525708a027a57852e28e7e84ab3d0db6b73b7e6775604d317139bc0146fedf45a17bc8b3559d4921cb87c51a21f374e040da55e013f4748b22e58f3a53f8ba733bf823eec2f2e8250d3584bd0719bdc36c1f411bfc3d6baf0db966ff2f60dc348da8ed5d011634677ff04c705b6a6942eaffbea4dc0ff5451083f5f7117df044b868df8ae2291ee68998f4c159e885ebcd1073f751899557546e5d8ddbee87a5747e5fa3f5610adf7dece55a339276e7efc3d9a152f222dd3f0452ee4ec56af7a5c1f3b9130ccf1c689e8e1401e8b885ca67349b69526ff523f217c3b36c643a9c46c46b0dc2d0f1d80c83435f752740ee7e423a59badfd5981706ec62d38ce07295ef4fbe23a4ab6cf85a2289e09cc5ad0bae981d3f42e9c6c85eeaff1f257e8ab99c2e93754e88ccd23fe3ad9c78be182b3944b79877aa1eced48b8fcf1f51c5cd01c4b2b111c97f0338e0efccc61e728e784c51d50371f453d926b02fae5c46e118a2f23a28d6f0830ec04b736ed84cf09ea1b0e228d13d7c8794ae6f363d100538a9baa9fbe533a909717dcce4c012d7f258aaee4b41c2e3f1bfe44a652ba8da51dc67164c43112805d474372b9076f3f3f0e7af94604f4fcddd2136dd7dc80ce3ff845924462cf52f5818aebf3b64f38f98edf8cb9c460477a2f94b891573929c4b51deafe6db81bc30680f7226a68567588f195ce96a791e28204b9b5844c28a61736ac20722fe156175210c7b9b6e1804c89c0a7ee136597b5b3de5d54be23671bc9477805ba10d03afb0715782845d2ab45df012f6644207cc5fa4739aa3eaf6bf84e790128aa08aede33bf30c6be2b264b33fac5662094242424242424242424242424242424242424242424242424242424242424242
	hmac[2] = 0x28430b210c0af631ef80dc8594c08557ce4626bdd3593314624a588cc083a1d9

	rhokey[1] = 0x450ffcabc6449094918ebe13d4f03e433d20a3d28a768203337bc40b6e4b2c59
	mukey[1] = 0x05ed2b4a3fb023c2ff5dd6ed4b9b6ea7383f5cfe9d59c11d121ec2c81ca2eea9
	routing_info[1] (unencrypted) = 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
	routing_info[1] (encrypted) = 0x03445185327b8cbf5c5bfa27f925f3a9af4f431f6f7a16ad786704887cbd85bd9396df49c699c185373e4e7ac62eaf2d709eff47aa3705a235186ca412925b98902e464b80d7772900ad5040e65174840ee298625c77768d6199fa32154615bb0bd89aa137d124cb1ffcc83b85bb15ec01132794fa24cd81f94e30cc9f3de57ab16f00b29fe5456be97ea49b4b0b4601a96b8432e111ca36ae7d94c9de13ecda4ed4b7bd20a156a0697d11943871402bb1c32a312fa4f0f6ee1a0e2eb87c1fcb64d57985a7e9c07d9fba335719c04ec18607918874c513ad4c6426bd0181a3233ba12283b03be24cb8e2a530a8cb92b9bed43889267aab86d69d3d72f734e6768324125c75b25988ac2aab93da5939e2059fc0d5479d7c404b6bd1e5a9e995e47cb6966bb063377aedd689052f0a72c6576548f7264989ccd9838068b56cf7e3620f88627276674be6376007208afb027234b9e2a0267a51141ffa8ae1f3da72a8604417e63cffc3d5c4263c7e96c7ef2baa91dcf629efb87a088550b6165686c75ff9f60f24d79b5e560ceb38e987f0371cd002c1ebd09cfe3bfa1191ea1e4b23886d20a64a4526584d7beb2db9c51c3895d84cc9ecb15bff52cc64320c1f79f7d3659e2ee54a4aeed1cebb412eacd782f83ae2288c623e1a1256370262fd1afbb1a61d5e323d5bd679690105b597f027141d035a0f6ec4ef468d9a3ab39b9d54f1817878b745567f181b6678b9900299c11f21c92618da90cb10b2ecbef3d07a0b78cd35ddcc11d02e2e859f9296687268979557b99a9eaffd0875bdce1c03b1f507537916d0aba5aa437c3611ddf9e6975fc82545b67344a4f02125b08a27873079e4490519ec839a105638728d6b2dffa8024b6c4eb08dd793fbd7e53aac0e327401e1de38f826d7ac66beea3925232b0c7d086095a474b1c4f5dbb5651f5de1d1699b90bb500202673d867d00654244ece624c820d7a84db2c5e9515ace71158e45d52790a47b3b7c33ffda69b04dcf107a61a5bb0e6ab6bf06d6b44552d823f2b5969ccbe2f3986cb7180bf7acad66684117c391ff428a2023d7d29063766bb9fbb2c276c3067fab08c7fcf18fa3741b2bd409a58a4fc67d9cffde1faeb39dd86b21fa9b7930c2c6b8d28e4aeea263b3bec2bbc95b939c6ad208689204b83ea8eec2e90a42c0fde1ca8de5aaacd8a614328f83480b4a5bb5e12546ba0e56aef9e88d813dcc7c83f905c91bc5853b7d734a160f3e0efc10237aae97767abea0181c48861f2fabe52a38bcd7859d25ac5dc80eb457615d5064d77a81516b97f90c2feab7861dd9728d51a05247ef5defa05d77486812bd909195ef11c772b374d6cbe18a218af26aa19c72de077307567fa90b18eb1bc77a357ab09cc637b93d5d55793ea075285d60b04ca48bcdd45a32f55932358687db09440ff4ba255fa72e4dacee47e9029bfc16af51e121efdeb189b31dd5be103ef9dd2b5eac641768a81fce1056e6416cb8fc53b8fe946f8e37ab1f94520c3fb0d01dc15207cdec370b0fe76e5234343db30b2f8e0afdc50f1d52d761fbcd3dfcca053f01cfd3c43763546f9d5fc66e1adba7c9d66af0f61d27622f12372c4a75af5861151dcd2da571c7e90c7bde4dae9aea645f85c0781e4472e2b68d63d6789e3dc7ccb543ec47d68d1fa700c0081908a8d2e4687b6e826f4254bc169921b7e02643f3faa0264c7ff77a52205a9388d0a98c0394dc4dee81989115ade30d309374fea8435815418038534d12e4ffe88b91406a71d89d5a083e3b8224d86b2be11be32169afb04b9ea997854be9085472c342ef5fca19bf5479
	hmac_data[1] = 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
	hmac[1] = 0x2bdc5227c8eb8ba5fcfc15cfc2aa578ff208c106646d0652cd289c0a37e445bb

	rhokey[0] = 0xce496ec94def95aadd4bec15cdb41a740c9f2b62347c4917325fcc6fb0453986
	mukey[0] = 0xb57061dc6d0a2b9f261ac410c8b26d64ac5506cbba30267a649c28c179400eba
	routing_info[0] (unencrypted) = 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
	routing_info[0] (encrypted) = 0xe5f14350c2a76fc232b5e46d421e9615471ab9e0bc887beff8c95fdb878f7b3a716a996c7845c93d90e4ecbb9bde4ece2f69425c99e4bc820e44485455f135edc0d10f7d61ab590531cf08000179a333a347f8b4072f216400406bdf3bf038659793d4a1fd7b246979e3150a0a4cb052c9ec69acf0f48c3d39cd55675fe717cb7d80ce721caad69320c3a469a202f1e468c67eaf7a7cd8226d0fd32f7b48084dca885d56047694762b67021713ca673929c163ec36e04e40ca8e1c6d17569419d3039d9a1ec866abe044a9ad635778b961fc0776dc832b3a451bd5d35072d2269cf9b040f6b7a7dad84fb114ed413b1426cb96ceaf83825665ed5a1d002c1687f92465b49ed4c7f0218ff8c6c7dd7221d589c65b3b9aaa71a41484b122846c7c7b57e02e679ea8469b70e14fe4f70fee4d87b910cf144be6fe48eef24da475c0b0bcc6565ae82cd3f4e3b24c76eaa5616c6111343306ab35c1fe5ca4a77c0e314ed7dba39d6f1e0de791719c241a939cc493bea2bae1c1e932679ea94d29084278513c77b899cc98059d06a27d171b0dbdf6bee13ddc4fc17a0c4d2827d488436b57baa167544138ca2e64a11b43ac8a06cd0c2fba2d4d900ed2d9205305e2d7383cc98dacb078133de5f6fb6bed2ef26ba92cea28aafc3b9948dd9ae5559e8bd6920b8cea462aa445ca6a95e0e7ba52961b181c79e73bd581821df2b10173727a810c92b83b5ba4a0403eb710d2ca10689a35bec6c3a708e9e92f7d78ff3c5d9989574b00c6736f84c199256e76e19e78f0c98a9d580b4a658c84fc8f2096c2fbea8f5f8c59d0fdacb3be2802ef802abbecb3aba4acaac69a0e965abd8981e9896b1f6ef9d60f7a164b371af869fd0e48073742825e9434fc54da837e120266d53302954843538ea7c6c3dbfb4ff3b2fdbe244437f2a153ccf7bdb4c92aa08102d4f3cff2ae5ef86fab4653595e6a5837fa2f3e29f27a9cde5966843fb847a4a61f1e76c281fe8bb2b0a181d096100db5a1a5ce7a910238251a43ca556712eaadea167fb4d7d75825e440f3ecd782036d7574df8bceacb397abefc5f5254d2722215c53ff54af8299aaaad642c6d72a14d27882d9bbd539e1cc7a527526ba89b8c037ad09120e98ab042d3e8652b31ae0e478516bfaf88efca9f3676ffe99d2819dcaeb7610a626695f53117665d267d3f7abebd6bbd6733f645c72c389f03855bdf1e4b8075b516569b118233a0f0971d24b83113c0b096f5216a207ca99a7cddc81c130923fe3d91e7508c9ac5f2e914ff5dccab9e558566fa14efb34ac98d878580814b94b73acbfde9072f30b881f7f0fff42d4045d1ace6322d86a97d164aa84d93a60498065cc7c20e636f5862dc81531a88c60305a2e59a985be327a6902e4bed986dbf4a0b50c217af0ea7fdf9ab37f9ea1a1aaa72f54cf40154ea9b269f1a7c09f9f43245109431a175d50e2db0132337baa0ef97eed0fcf20489da36b79a1172faccc2f7ded7c60e00694282d93359c4682135642bc81f433574aa8ef0c97b4ade7ca372c5ffc23c7eddd839bab4e0f14d6df15c9dbeab176bec8b5701cf054eb3072f6dadc98f88819042bf10c407516ee58bce33fbe3b3d86a54255e577db4598e30a135361528c101683a5fcde7e8ba53f3456254be8f45fe3a56120ae96ea3773631fcb3873aa3abd91bcff00bd38bd43697a2e789e00da6077482e7b1b1a677b5afae4c54e6cbdf7377b694eb7d7a5b913476a5be923322d3de06060fd5e819635232a2cf4f0731da13b8546d1d6d4f8d75b9fce6c2341a71b0ea6f780df54bfdb0dd5cd9855179f602f9172
	hmac_data[0] = 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
	hmac[0] = 0x307c7268724c3618e6817abd793adc214a0dc0bc616816632f27ea336fb56dfd

#### Final Packet

	onionpacket = 0x0102eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619e5f14350c2a76fc232b5e46d421e9615471ab9e0bc887beff8c95fdb878f7b3a716a996c7845c93d90e4ecbb9bde4ece2f69425c99e4bc820e44485455f135edc0d10f7d61ab590531cf08000179a333a347f8b4072f216400406bdf3bf038659793d4a1fd7b246979e3150a0a4cb052c9ec69acf0f48c3d39cd55675fe717cb7d80ce721caad69320c3a469a202f1e468c67eaf7a7cd8226d0fd32f7b48084dca885d56047694762b67021713ca673929c163ec36e04e40ca8e1c6d17569419d3039d9a1ec866abe044a9ad635778b961fc0776dc832b3a451bd5d35072d2269cf9b040f6b7a7dad84fb114ed413b1426cb96ceaf83825665ed5a1d002c1687f92465b49ed4c7f0218ff8c6c7dd7221d589c65b3b9aaa71a41484b122846c7c7b57e02e679ea8469b70e14fe4f70fee4d87b910cf144be6fe48eef24da475c0b0bcc6565ae82cd3f4e3b24c76eaa5616c6111343306ab35c1fe5ca4a77c0e314ed7dba39d6f1e0de791719c241a939cc493bea2bae1c1e932679ea94d29084278513c77b899cc98059d06a27d171b0dbdf6bee13ddc4fc17a0c4d2827d488436b57baa167544138ca2e64a11b43ac8a06cd0c2fba2d4d900ed2d9205305e2d7383cc98dacb078133de5f6fb6bed2ef26ba92cea28aafc3b9948dd9ae5559e8bd6920b8cea462aa445ca6a95e0e7ba52961b181c79e73bd581821df2b10173727a810c92b83b5ba4a0403eb710d2ca10689a35bec6c3a708e9e92f7d78ff3c5d9989574b00c6736f84c199256e76e19e78f0c98a9d580b4a658c84fc8f2096c2fbea8f5f8c59d0fdacb3be2802ef802abbecb3aba4acaac69a0e965abd8981e9896b1f6ef9d60f7a164b371af869fd0e48073742825e9434fc54da837e120266d53302954843538ea7c6c3dbfb4ff3b2fdbe244437f2a153ccf7bdb4c92aa08102d4f3cff2ae5ef86fab4653595e6a5837fa2f3e29f27a9cde5966843fb847a4a61f1e76c281fe8bb2b0a181d096100db5a1a5ce7a910238251a43ca556712eaadea167fb4d7d75825e440f3ecd782036d7574df8bceacb397abefc5f5254d2722215c53ff54af8299aaaad642c6d72a14d27882d9bbd539e1cc7a527526ba89b8c037ad09120e98ab042d3e8652b31ae0e478516bfaf88efca9f3676ffe99d2819dcaeb7610a626695f53117665d267d3f7abebd6bbd6733f645c72c389f03855bdf1e4b8075b516569b118233a0f0971d24b83113c0b096f5216a207ca99a7cddc81c130923fe3d91e7508c9ac5f2e914ff5dccab9e558566fa14efb34ac98d878580814b94b73acbfde9072f30b881f7f0fff42d4045d1ace6322d86a97d164aa84d93a60498065cc7c20e636f5862dc81531a88c60305a2e59a985be327a6902e4bed986dbf4a0b50c217af0ea7fdf9ab37f9ea1a1aaa72f54cf40154ea9b269f1a7c09f9f43245109431a175d50e2db0132337baa0ef97eed0fcf20489da36b79a1172faccc2f7ded7c60e00694282d93359c4682135642bc81f433574aa8ef0c97b4ade7ca372c5ffc23c7eddd839bab4e0f14d6df15c9dbeab176bec8b5701cf054eb3072f6dadc98f88819042bf10c407516ee58bce33fbe3b3d86a54255e577db4598e30a135361528c101683a5fcde7e8ba53f3456254be8f45fe3a56120ae96ea3773631fcb3873aa3abd91bcff00bd38bd43697a2e789e00da6077482e7b1b1a677b5afae4c54e6cbdf7377b694eb7d7a5b913476a5be923322d3de06060fd5e819635232a2cf4f0731da13b8546d1d6d4f8d75b9fce6c2341a71b0ea6f780df54bfdb0dd5cd9855179f602f9172307c7268724c3618e6817abd793adc214a0dc0bc616816632f27ea336fb56dfd

### Returning errors

We use the same parameters (node ids, shared secrets ,...) as above

	# node 4 is returning an error 
	failure_message = 2002
	# creating error message
	shared_secret = b5756b9b542727dbafc6765a49488b023a725d631af688fc031217e90770c328
	payload = 00022002007e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
	um_key = 4da7f2923edce6c2d85987d1d9fa6d88023e6c3a9c3d20f07d3b10b61a78d646
	raw_error_packet = 807890139cc04c1fdea98b22ebda0a831d1beebe9787d291f0d72c5877566d5700022002007e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
	# forwarding error packet
	shared_secret = b5756b9b542727dbafc6765a49488b023a725d631af688fc031217e90770c328
	 ammag_key = 2f36bb8822e1f0d04c27b7d8bb7d7dd586e032a3218b8d414afbba6f169a4d68
	stream = e9c975b07c9a374ba64fd9be3aae955e917d34d1fa33f2e90f53bbf4394713c6a8c9b16ab5f12fd45edd73c1b0c8b33002df376801ff58aaa94000bf8a86f92620f343baef38a580102395ae3abf9128d1047a0736ff9b83d456740ebbb4aeb3aa9737f18fb4afb4aa074fb26c4d702f42968888550a3bded8c05247e045b866baef0499f079fdaeef6538f31d44deafffdfd3afa2fb4ca9082b8f1c465371a9894dd8c2
	error packet for node 4: 69b1e5a3e05a7b5478e6529cd1749fdd8c66da6f6db42078ff8497ac4e117e91a8cb9168b58f2fd45edd73c1b0c8b33002df376801ff58aaa94000bf8a86f92620f343baef38a580102395ae3abf9128d1047a0736ff9b83d456740ebbb4aeb3aa9737f18fb4afb4aa074fb26c4d702f42968888550a3bded8c05247e045b866baef0499f079fdaeef6538f31d44deafffdfd3afa2fb4ca9082b8f1c465371a9894dd8c2
	# forwarding error packet
	shared_secret = 21e13c2d7cfe7e18836df50872466117a295783ab8aab0e7ecc8c725503ad02d
	ammag_key = cd9ac0e09064f039fa43a31dea05f5fe5f6443d40a98be4071af4a9d704be5ad
	stream = 617ca1e4624bc3f04fece3aa5a2b615110f421ec62408d16c48ea6c1b7c33fe7084a2bd9d4652fc5068e5052bf6d0acae2176018a3d8c75f37842712913900263cff92f39f3c18aa1f4b20a93e70fc429af7b2b1967ca81a761d40582daf0eb49cef66e3d6fbca0218d3022d32e994b41c884a27c28685ef1eb14603ea80a204b2f2f474b6ad5e71c6389843e3611ebeafc62390b717ca53b3670a33c517ef28a659c251
	error packet for node 3: 08cd44478211b8a4370ab1368b5ffe8c9c92fb830ff4ad6e3b0a316df9d24176a081bab161ea0011585323930fa5b9fae0c85770a2279ff59ec427ad1bbff9001c0cd1497004bd2a0f68b50704cf6d6a4bf3c8b6a0833399a24b3456961ba00736785112594f65b6b2d44d9f5ea4e49b5e1ec2af978cbe31c67114440ac51a62081df0ed46d4a3df295da0b0fe25c0115019f03f15ec86fabb4c852f83449e812f141a93
	forwarding error packet
	shared_secret = 3a6b412548762f0dbccce5c7ae7bb8147d1caf9b5471c34120b30bc9c04891cc
	ammag_key = 1bf08df8628d452141d56adfd1b25c1530d7921c23cecfc749ac03a9b694b0d3
	stream = 6149f48b5a7e8f3d6f5d870b7a698e204cf64452aab4484ff1dee671fe63fd4b5f1b78ee2047dfa61e3d576b149bedaf83058f85f06a3172a3223ad6c4732d96b32955da7d2feb4140e58d86fc0f2eb5d9d1878e6f8a7f65ab9212030e8e915573ebbd7f35e1a430890be7e67c3fb4bbf2def662fa625421e7b411c29ebe81ec67b77355596b05cc155755664e59c16e21410aabe53e80404a615f44ebb31b365ca77a6e
	error packet for node 2: 6984b0ccd86f37995857363df13670acd064bfd1a540e521cad4d71c07b1bc3dff9ac25f41addfb7466e74f81b3e545563cdd8f5524dae873de61d7bdfccd496af2584930d2b566b4f8d3881f8c043df92224f38cf094cfc09d92655989531524593ec6d6caec1863bdfaa79229b5020acc034cd6deeea1021c50586947b9b8e6faa83b81fbfa6133c0af5d6b07c017f7158fa94f0d206baf12dda6b68f785b773b360fd
	# forwarding error packet
	shared_secret = a6519e98832a0b179f62123b3567c106db99ee37bef036e783263602f3488fae
	ammag_key = 59ee5867c5c151daa31e36ee42530f429c433836286e63744f2020b980302564
	stream = 0f10c86f05968dd91188b998ee45dcddfbf89fe9a99aa6375c42ed5520a257e048456fe417c15219ce39d921555956ae2ff795177c63c819233f3bcb9b8b28e5ac6e33a3f9b87ca62dff43f4cc4a2755830a3b7e98c326b278e2bd31f4a9973ee99121c62873f5bfb2d159d3d48c5851e3b341f9f6634f51939188c3b9ff45feeb11160bb39ce3332168b8e744a92107db575ace7866e4b8f390f1edc4acd726ed106555
	error packet for node 1: 669478a3ddf9ba4049df8fa51f73ac712b9c20380cda431696963a492713ebddb7dfadbb566c8dae8857add94e6702fb4c3a4de22e2e669e1ed926b04447fc73034bb730f4932acd62727b75348a648a1128744657ca6a4e713b9b646c3ca66cac02cdab44dd3439890ef3aaf61708714f7375349b8da541b2548d452d84de7084bb95b3ac2345201d624d31f4d52078aa0fa05a88b4e20202bd2b86ac5b52919ea305a8
	# forwarding error packet
	shared_secret = 53eb63ea8a3fec3b3cd433b85cd62a4b145e1dda09391b348c4e1cd36a03ea66
	ammag_key = 3761ba4d3e726d8abb16cba5950ee976b84937b61b7ad09e741724d7dee12eb5
	stream = 3699fd352a948a05f604763c0bca2968d5eaca2b0118602e52e59121f050936c8dd90c24df7dc8cf8f1665e39a6c75e9e2c0900ea245c9ed3b0008148e0ae18bbfaea0c711d67eade980c6f5452e91a06b070bbde68b5494a92575c114660fb53cf04bf686e67ffa4a0f5ae41a59a39a8515cb686db553d25e71e7a97cc2febcac55df2711b6209c502b2f8827b13d3ad2f491c45a0cafe7b4d8d8810e805dee25d676ce
	error packet for node 0: 500d8596f76d3045bfdbf99914b98519fe76ea130dc22338c473ab68d74378b13a06a19f891145610741c83ad40b7712aefaddec8c6baf7325d92ea4ca4d1df8bce517f7e54554608bf2bd8071a4f52a7a2f7ffbb1413edad81eeea5785aa9d990f2865dc23b4bc3c301a94eec4eabebca66be5cf638f693ec256aec514620cc28ee4a94bd9565bc4d4962b9d3641d4278fb319ed2b84de5b665f307a2db0f7fbb757366

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