refactor: solomachine generic verification methods and signbytes simplification (#1687)

* adding new SignBytes type, generic membership verification implementation and tests

* adding protodocs

* updating comment

* refactor: solomachine misbehaviour checking (#1715)

* adding SignatureAndDataV2 proto message type

* updating misbehaviour checking

* removing dead solomachine code (#1716)

* updating tests with concrete ibc core types

* refactor: solomachine generic VerifyNonMembership (#1720)

* adding verification of non-membership with tests

* refactor common code to produceVerificationArgs

* removing unused produce args func

* Update modules/light-clients/06-solomachine/client_state_test.go

Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com>

Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com>

* removing V2 suffix from SignBytes and SignatureAndData types

* use current diversifier when verifying header details

* Add test for new diversifier for solomachine (#1860)

* add test for successful new diversifier

* add changelog entry

* fix tests

* restoring solomachine/v2 protos, updadting v2 codegen path and adding solomachine/v3 protobuf defs

* adding changelog entries

Co-authored-by: colin axnér <25233464+colin-axner@users.noreply.github.com>

Author: damiannolan

CHANGELOG.md

@@ -45,6 +45,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (transfer) [\#1250](https://github.com/cosmos/ibc-go/pull/1250) Deprecate `GetTransferAccount` since the `transfer` module account is never used.
 * (06-solomachine) [\#1679](https://github.com/cosmos/ibc-go/pull/1679) Remove `types` sub-package from `06-solomachine` lightclient directory. 
 * (07-tendermint) [\#1677](https://github.com/cosmos/ibc-go/pull/1677) Remove `types` sub-package from `07-tendermint` lightclient directory. 
+* (06-solomachine) [\#1687](https://github.com/cosmos/ibc-go/pull/1687) Bump `06-solomachine` protobuf version from `v2` to `v3`.
+* (06-solomachine) [\#1687](https://github.com/cosmos/ibc-go/pull/1687) Removed `DataType` enum and associated message types from `06-solomachine`. `DataType` has been removed from `SignBytes` and `SignatureAndData` in favour of `path`.
 
 ### State Machine Breaking
 
@@ -79,6 +81,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
+* (light-clients/solomachine) [#1839](https://github.com/cosmos/ibc-go/issues/1839) Fixed usage of the new diversifier in validation of changing diversifiers for the solo machine. The current diversifier must sign over the new diversifier.
 * (modules/core/04-channel) [\#1130](https://github.com/cosmos/ibc-go/pull/1130) Call `packet.GetSequence()` rather than passing func in `WriteAcknowledgement` log output
 * (apps/29-fee) [\#1278](https://github.com/cosmos/ibc-go/pull/1278) The URI path for the query to get all incentivized packets for a specifc channel did not follow the same format as the rest of queries.
 * (07-tendermint) [\#1674](https://github.com/cosmos/ibc-go/pull/1674) Submitted ClientState is zeroed out before checking the proof in order to prevent the proposal from containing information governance is not actually voting on.

docs/ibc/proto-docs.md

@@ -326,6 +326,16 @@
 
     - [DataType](#ibc.lightclients.solomachine.v2.DataType)
 
+- [ibc/lightclients/solomachine/v3/solomachine.proto](#ibc/lightclients/solomachine/v3/solomachine.proto)
+    - [ClientState](#ibc.lightclients.solomachine.v3.ClientState)
+    - [ConsensusState](#ibc.lightclients.solomachine.v3.ConsensusState)
+    - [Header](#ibc.lightclients.solomachine.v3.Header)
+    - [HeaderData](#ibc.lightclients.solomachine.v3.HeaderData)
+    - [Misbehaviour](#ibc.lightclients.solomachine.v3.Misbehaviour)
+    - [SignBytes](#ibc.lightclients.solomachine.v3.SignBytes)
+    - [SignatureAndData](#ibc.lightclients.solomachine.v3.SignatureAndData)
+    - [TimestampedSignatureData](#ibc.lightclients.solomachine.v3.TimestampedSignatureData)
+  
 - [ibc/lightclients/tendermint/v1/tendermint.proto](#ibc/lightclients/tendermint/v1/tendermint.proto)
     - [ClientState](#ibc.lightclients.tendermint.v1.ClientState)
     - [ConsensusState](#ibc.lightclients.tendermint.v1.ConsensusState)
@@ -4641,7 +4651,7 @@ of a sequence and two signatures over different messages at that sequence.
 
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
-| `client_id` | [string](#string) |  | **Deprecated.** ClientID is deprecated |
+| `client_id` | [string](#string) |  |  |
 | `sequence` | [uint64](#uint64) |  |  |
 | `signature_one` | [SignatureAndData](#ibc.lightclients.solomachine.v2.SignatureAndData) |  |  |
 | `signature_two` | [SignatureAndData](#ibc.lightclients.solomachine.v2.SignatureAndData) |  |  |
@@ -4803,6 +4813,169 @@ to preserve uniqueness of different data sign byte encodings.
 
 
 
+<a name="ibc/lightclients/solomachine/v3/solomachine.proto"></a>
+<p align="right"><a href="#top">Top</a></p>
+
+## ibc/lightclients/solomachine/v3/solomachine.proto
+
+
+
+<a name="ibc.lightclients.solomachine.v3.ClientState"></a>
+
+### ClientState
+ClientState defines a solo machine client that tracks the current consensus
+state and if the client is frozen.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `sequence` | [uint64](#uint64) |  | latest sequence of the client state |
+| `is_frozen` | [bool](#bool) |  | frozen sequence of the solo machine |
+| `consensus_state` | [ConsensusState](#ibc.lightclients.solomachine.v3.ConsensusState) |  |  |
+| `allow_update_after_proposal` | [bool](#bool) |  | when set to true, will allow governance to update a solo machine client. The client will be unfrozen if it is frozen. |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.ConsensusState"></a>
+
+### ConsensusState
+ConsensusState defines a solo machine consensus state. The sequence of a
+consensus state is contained in the "height" key used in storing the
+consensus state.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `public_key` | [google.protobuf.Any](#google.protobuf.Any) |  | public key of the solo machine |
+| `diversifier` | [string](#string) |  | diversifier allows the same public key to be re-used across different solo machine clients (potentially on different chains) without being considered misbehaviour. |
+| `timestamp` | [uint64](#uint64) |  |  |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.Header"></a>
+
+### Header
+Header defines a solo machine consensus header
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `sequence` | [uint64](#uint64) |  | sequence to update solo machine public key at |
+| `timestamp` | [uint64](#uint64) |  |  |
+| `signature` | [bytes](#bytes) |  |  |
+| `new_public_key` | [google.protobuf.Any](#google.protobuf.Any) |  |  |
+| `new_diversifier` | [string](#string) |  |  |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.HeaderData"></a>
+
+### HeaderData
+HeaderData returns the SignBytes data for update verification.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `new_pub_key` | [google.protobuf.Any](#google.protobuf.Any) |  | header public key |
+| `new_diversifier` | [string](#string) |  | header diversifier |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.Misbehaviour"></a>
+
+### Misbehaviour
+Misbehaviour defines misbehaviour for a solo machine which consists
+of a sequence and two signatures over different messages at that sequence.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `client_id` | [string](#string) |  | **Deprecated.** ClientID is deprecated |
+| `sequence` | [uint64](#uint64) |  |  |
+| `signature_one` | [SignatureAndData](#ibc.lightclients.solomachine.v3.SignatureAndData) |  |  |
+| `signature_two` | [SignatureAndData](#ibc.lightclients.solomachine.v3.SignatureAndData) |  |  |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.SignBytes"></a>
+
+### SignBytes
+SignBytes defines the signed bytes used for signature verification.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `sequence` | [uint64](#uint64) |  | the sequence number |
+| `timestamp` | [uint64](#uint64) |  | the proof timestamp |
+| `diversifier` | [string](#string) |  | the public key diversifier |
+| `path` | [bytes](#bytes) |  | the standardised path bytes |
+| `data` | [bytes](#bytes) |  | the marshaled data bytes |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.SignatureAndData"></a>
+
+### SignatureAndData
+SignatureAndData contains a signature and the data signed over to create that
+signature.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `signature` | [bytes](#bytes) |  |  |
+| `path` | [bytes](#bytes) |  |  |
+| `data` | [bytes](#bytes) |  |  |
+| `timestamp` | [uint64](#uint64) |  |  |
+
+
+
+
+
+
+<a name="ibc.lightclients.solomachine.v3.TimestampedSignatureData"></a>
+
+### TimestampedSignatureData
+TimestampedSignatureData contains the signature data and the timestamp of the
+signature.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| `signature_data` | [bytes](#bytes) |  |  |
+| `timestamp` | [uint64](#uint64) |  |  |
+
+
+
+
+
+ <!-- end messages -->
+
+ <!-- end enums -->
+
+ <!-- end HasExtensions -->
+
+ <!-- end services -->
+
+
+
 <a name="ibc/lightclients/tendermint/v1/tendermint.proto"></a>
 <p align="right"><a href="#top">Top</a></p>