Solution:

sync with 1.3.x branch

👮🏻👮🏻👮🏻 !!!! REFERENCE THE PROBLEM YOUR ARE SOLVING IN THE PR TITLE AND DESCRIBE YOUR SOLUTION HERE !!!! DO NOT FORGET !!!! 👮🏻👮🏻👮🏻

PR Checklist:

[ ] Have you read the CONTRIBUTING.md?
[ ] Does your PR follow the C4 patch requirements?
[ ] Have you rebased your work on top of the latest master?
[ ] Have you checked your code compiles? (make)
[ ] Have you included tests for any non-trivial functionality?
[ ] Have you checked your code passes the unit tests? (make test)
[ ] Have you checked your code formatting is correct? (go fmt)
[ ] Have you checked your basic code style is fine? (golangci-lint run)
[ ] If you added any dependencies, have you checked they do not contain any known vulnerabilities? (go list -json -m all | nancy sleuth)
[ ] If your changes affect the client infrastructure, have you run the integration test?
[ ] If your changes affect public APIs, does your PR follow the C4 evolution of public contracts?
[ ] If your code changes public APIs, have you incremented the crate version numbers and documented your changes in the CHANGELOG.md?
[ ] If you are contributing for the first time, please read the agreement in CONTRIBUTING.md now and add a comment to this pull request stating that your PR is in accordance with the Developer's Certificate of Origin.

Thank you for your code, it's appreciated! :)

Summary by CodeRabbit

Release Notes

New Features
- Integrated end-to-end encryption (E2EE) functionality into the application.
- Enhanced transaction proposal handling with new validation logic.
- Added new tests for E2EE key management and blocklist functionality.
Bug Fixes
- Improved accuracy of blocklist checks by ensuring proper address formatting.
Documentation
- Updated the CHANGELOG to reflect synchronization with the v1.3.x branch.
Chores
- Removed outdated dependencies from project configuration files.

Walkthrough

The changes encompass various modifications across multiple files, primarily introducing functionalities related to end-to-end encryption (E2EE) and blocklist management. Key additions include the integration of the filippo.io/age package for E2EE, updates to transaction handling, and enhancements to the testing suite for E2EE key management. Dependencies have been removed, and existing functions have been refined to support the new features, particularly in transaction validation and blocklist processing.

Changes

Files	Change Summary
`CHANGELOG.md`	Added entry for synchronization of the e2ee module with the v1.3.x branch.
`app/app.go`, `app/block_address.go`	Introduced E2EE functionality, including new identity handling, transaction proposal logic, and improved signer checks in block address validation.
`go.mod`, `gomod2nix.toml`	Removed dependency on `github.com/test-go/testify v1.1.4`.
`integration_tests/test_e2ee.py`	Enhanced tests for E2EE key management, added tests for blocklists, and refactored existing tests for clarity and structure, including new helper functions for key generation and blocklist encryption.

Possibly related PRs

#1600: This PR updates the CHANGELOG.md to document improvements related to the ethermint component, similar to the main PR's update to the CHANGELOG.md regarding the e2ee module.
#1606: This PR also updates the CHANGELOG.md to document a fix for PebbleDB support, which is relevant as both PRs involve changes to the CHANGELOG.md file.

Suggested reviewers

calvinaco

Poem

🐇 In the garden of code, new features bloom,
With blocklists and keys, there's always room.
Encrypting our secrets, we hop with delight,
In the world of E2EE, everything feels right!
So let's cheer for the changes, both big and small,
For a rabbit's new journey, we welcome them all! 🌼

📜 Recent review details

**Configuration used: CodeRabbit UI** **Review profile: CHILL**

📥 Commits

Files that changed from the base of the PR and between 55f6856dbb26a11041226b68cdfda8f7284da9af and 44a007280af05d2ca964db3114070e37a5ed7f13.

📒 Files selected for processing (1)

* app/app.go (10 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

* app/app.go

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Codecov Report

Attention: Patch coverage is 54.01929% with 143 lines in your changes missing coverage. Please review.

Project coverage is 36.97%. Comparing base (bbdd407) to head (44a0072). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
app/proposal.go	22.66%	57 Missing and 1 partial :warning:
x/e2ee/client/cli/encrypt_to_validators.go	59.37%	13 Missing and 13 partials :warning:
x/cronos/types/messages.go	46.15%	13 Missing and 1 partial :warning:
x/e2ee/client/cli/pubkey.go	60.00%	5 Missing and 5 partials :warning:
x/e2ee/client/cli/query.go	82.22%	4 Missing and 4 partials :warning:
x/cronos/keeper/msg_server.go	0.00%	7 Missing :warning:
x/cronos/client/cli/tx.go	73.91%	3 Missing and 3 partials :warning:
x/cronos/keeper/grpc_query.go	0.00%	6 Missing :warning:
x/e2ee/types/msg.go	0.00%	5 Missing :warning:
x/e2ee/client/cli/tx.go	92.30%	1 Missing and 1 partial :warning:
... and 1 more

Additional details and impacted files

[![Impacted file tree graph](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610/graphs/tree.svg?width=650&height=150&src=pr&token=92w0Dz1Coj&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain)](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain) ```diff @@ Coverage Diff @@ ## main #1610 +/- ## ========================================== + Coverage 36.12% 36.97% +0.84% ========================================== Files 97 102 +5 Lines 7725 8035 +310 ========================================== + Hits 2791 2971 +180 - Misses 4585 4686 +101 - Partials 349 378 +29 ``` | [Files with missing lines](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain) | Coverage Δ | | |---|---|---| | [x/cronos/keeper/keeper.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fcronos%2Fkeeper%2Fkeeper.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9jcm9ub3Mva2VlcGVyL2tlZXBlci5nbw==) | `63.52% <100.00%> (+0.46%)` | :arrow_up: | | [x/cronos/types/keys.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fcronos%2Ftypes%2Fkeys.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9jcm9ub3MvdHlwZXMva2V5cy5nbw==) | `0.00% <ø> (ø)` | | | [x/e2ee/client/cli/cmd.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fe2ee%2Fclient%2Fcli%2Fcmd.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9lMmVlL2NsaWVudC9jbGkvY21kLmdv) | `100.00% <100.00%> (ø)` | | | [x/e2ee/module.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fe2ee%2Fmodule.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9lMmVlL21vZHVsZS5nbw==) | `65.95% <100.00%> (+3.16%)` | :arrow_up: | | [app/block\_address.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=app%2Fblock_address.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-YXBwL2Jsb2NrX2FkZHJlc3MuZ28=) | `23.07% <0.00%> (ø)` | | | [x/e2ee/client/cli/tx.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fe2ee%2Fclient%2Fcli%2Ftx.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9lMmVlL2NsaWVudC9jbGkvdHguZ28=) | `92.30% <92.30%> (ø)` | | | [x/e2ee/types/msg.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fe2ee%2Ftypes%2Fmsg.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9lMmVlL3R5cGVzL21zZy5nbw==) | `41.66% <0.00%> (-1.20%)` | :arrow_down: | | [x/cronos/client/cli/tx.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fcronos%2Fclient%2Fcli%2Ftx.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9jcm9ub3MvY2xpZW50L2NsaS90eC5nbw==) | `42.85% <73.91%> (+3.21%)` | :arrow_up: | | [x/cronos/keeper/grpc\_query.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fcronos%2Fkeeper%2Fgrpc_query.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9jcm9ub3Mva2VlcGVyL2dycGNfcXVlcnkuZ28=) | `0.00% <0.00%> (ø)` | | | [x/cronos/keeper/msg\_server.go](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree&filepath=x%2Fcronos%2Fkeeper%2Fmsg_server.go&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain#diff-eC9jcm9ub3Mva2VlcGVyL21zZ19zZXJ2ZXIuZ28=) | `14.28% <0.00%> (-1.79%)` | :arrow_down: | | ... and [5 more](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain) | | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/crypto-org-chain/cronos/pull/1610/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=crypto-org-chain)

might add back identity part as well