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Updating Crypto to use WebCrypto API and to replace RSA with ECC#446

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tegefaulkes merged 68 commits intostagingfrom
feature-crypto
Dec 8, 2022
Merged

Updating Crypto to use WebCrypto API and to replace RSA with ECC#446
tegefaulkes merged 68 commits intostagingfrom
feature-crypto

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@CMCDragonkai CMCDragonkai commented Sep 13, 2022

Description

This PR focuses on updating the crypto utilities used by PK. We've been hitting problems using RSA and node-forge utilities, and we should start using the standardised WebCrypto API. This won't fully solve cross platform cryptography because that will need to wait until we hit mobile platforms and deal with it by using WASM or other utilities.

There are some new features coming into this PR:

  1. Public key encryption now allows arbitrary message size. There is no longer a limit on large the data to be encrypted is. The existing limit is only 446 bytes.
  2. Public key encryption supports static-static, ephemeral-static, and ephemeral-ephemeral.
  3. Because Ed25519 public keys are 32 bytes, NodeId is now finally the public key. This means you no longer have to acquire the public key separately from the NodeId. Once you have the NodeId you can use it for public key verification, and for encryption.
  4. The @peculiar/webcrypto is being monkey patched to globalThis.crypto. This ensures that every library is using the same webcrypto backend and this includes CSPRNG and encryption/decryption facilities.

Massive performance improvements in all areas:

Details

Old performance (node-forge):

# TYPE keys.asymmetric_crypto_ops gauge
keys.asymmetric_crypto_ops{name="encrypt 446 B of data"} 418.07
keys.asymmetric_crypto_ops{name="decrypt 446 B of data"} 6.49
keys.asymmetric_crypto_ops{name="sign 446 B of data"} 6.53
keys.asymmetric_crypto_ops{name="sign 1 KiB of data"} 6.57
keys.asymmetric_crypto_ops{name="sign 10 KiB of data"} 6.61
keys.asymmetric_crypto_ops{name="verify 446 B of data"} 449.55
keys.asymmetric_crypto_ops{name="verify 1 KiB of data"} 445.57
keys.asymmetric_crypto_ops{name="verify 10 KiB of data"} 428

# TYPE keys.asymmetric_crypto_margin gauge
keys.asymmetric_crypto_margin{name="encrypt 446 B of data"} 0.39
keys.asymmetric_crypto_margin{name="decrypt 446 B of data"} 0.37
keys.asymmetric_crypto_margin{name="sign 446 B of data"} 0.48
keys.asymmetric_crypto_margin{name="sign 1 KiB of data"} 0.45
keys.asymmetric_crypto_margin{name="sign 10 KiB of data"} 0.25
keys.asymmetric_crypto_margin{name="verify 446 B of data"} 0.74
keys.asymmetric_crypto_margin{name="verify 1 KiB of data"} 0.99
keys.asymmetric_crypto_margin{name="verify 10 KiB of data"} 0.28

# TYPE keys.asymmetric_crypto_samples counter
keys.asymmetric_crypto_samples{name="encrypt 446 B of data"} 88
keys.asymmetric_crypto_samples{name="decrypt 446 B of data"} 36
keys.asymmetric_crypto_samples{name="sign 446 B of data"} 36
keys.asymmetric_crypto_samples{name="sign 1 KiB of data"} 36
keys.asymmetric_crypto_samples{name="sign 10 KiB of data"} 36
keys.asymmetric_crypto_samples{name="verify 446 B of data"} 87
keys.asymmetric_crypto_samples{name="verify 1 KiB of data"} 87
keys.asymmetric_crypto_samples{name="verify 10 KiB of data"} 90

# TYPE keys.key_generation_ops gauge
keys.key_generation_ops{name="generate root asymmetric keypair"} 1
keys.key_generation_ops{name="generate deterministic root keypair"} 0
keys.key_generation_ops{name="generate 256 bit symmetric key"} 6204

# TYPE keys.key_generation_margin gauge
keys.key_generation_margin{name="generate root asymmetric keypair"} 29.86
keys.key_generation_margin{name="generate deterministic root keypair"} 0.33
keys.key_generation_margin{name="generate 256 bit symmetric key"} 1.72

# TYPE keys.key_generation_samples counter
keys.key_generation_samples{name="generate root asymmetric keypair"} 9
keys.key_generation_samples{name="generate deterministic root keypair"} 5
keys.key_generation_samples{name="generate 256 bit symmetric key"} 81

# TYPE keys.random_bytes_ops gauge
keys.random_bytes_ops{name="generate 512 B of random bytes"} 5346
keys.random_bytes_ops{name="random 1 KiB of data"} 4164
keys.random_bytes_ops{name="random 10 KiB of data"} 784

# TYPE keys.random_bytes_margin gauge
keys.random_bytes_margin{name="generate 512 B of random bytes"} 0.5
keys.random_bytes_margin{name="random 1 KiB of data"} 0.56
keys.random_bytes_margin{name="random 10 KiB of data"} 0.61

# TYPE keys.random_bytes_samples counter
keys.random_bytes_samples{name="generate 512 B of random bytes"} 94
keys.random_bytes_samples{name="random 1 KiB of data"} 93
keys.random_bytes_samples{name="random 10 KiB of data"} 93

# TYPE keys.recovery_code_ops gauge
keys.recovery_code_ops{name="generate 24 word recovery code"} 6419
keys.recovery_code_ops{name="generate 12 word recovery code"} 6704

# TYPE keys.recovery_code_margin gauge
keys.recovery_code_margin{name="generate 24 word recovery code"} 0.89
keys.recovery_code_margin{name="generate 12 word recovery code"} 0.63

# TYPE keys.recovery_code_samples counter
keys.recovery_code_samples{name="generate 24 word recovery code"} 85
keys.recovery_code_samples{name="generate 12 word recovery code"} 87

# TYPE keys.symmetric_crypto_ops gauge
keys.symmetric_crypto_ops{name="encrypt 512 B of data"} 4332
keys.symmetric_crypto_ops{name="encrypt 1 KiB of data"} 3838
keys.symmetric_crypto_ops{name="encrypt 10 KiB of data"} 1327
keys.symmetric_crypto_ops{name="decrypt 512 B of data"} 10484
keys.symmetric_crypto_ops{name="decrypt 1 KiB of data"} 8120
keys.symmetric_crypto_ops{name="decrypt 10 KiB of data"} 1600

# TYPE keys.symmetric_crypto_margin gauge
keys.symmetric_crypto_margin{name="encrypt 512 B of data"} 1.73
keys.symmetric_crypto_margin{name="encrypt 1 KiB of data"} 0.8
keys.symmetric_crypto_margin{name="encrypt 10 KiB of data"} 1.27
keys.symmetric_crypto_margin{name="decrypt 512 B of data"} 1.27
keys.symmetric_crypto_margin{name="decrypt 1 KiB of data"} 1.39
keys.symmetric_crypto_margin{name="decrypt 10 KiB of data"} 1.66

# TYPE keys.symmetric_crypto_samples counter
keys.symmetric_crypto_samples{name="encrypt 512 B of data"} 86
keys.symmetric_crypto_samples{name="encrypt 1 KiB of data"} 88
keys.symmetric_crypto_samples{name="encrypt 10 KiB of data"} 87
keys.symmetric_crypto_samples{name="decrypt 512 B of data"} 86
keys.symmetric_crypto_samples{name="decrypt 1 KiB of data"} 85
keys.symmetric_crypto_samples{name="decrypt 10 KiB of data"} 84

New performance (web crypto):

# TYPE keys.asymmetric_crypto_ops gauge
keys.asymmetric_crypto_ops{name="encrypt 512 B of data"} 357
keys.asymmetric_crypto_ops{name="encrypt 1 KiB of data"} 366
keys.asymmetric_crypto_ops{name="encrypt 10 KiB of data"} 368
keys.asymmetric_crypto_ops{name="decrypt 512 B of data"} 411
keys.asymmetric_crypto_ops{name="decrypt 1 KiB of data"} 414
keys.asymmetric_crypto_ops{name="decrypt 10 KiB of data"} 417
keys.asymmetric_crypto_ops{name="sign 512 B of data"} 1802
keys.asymmetric_crypto_ops{name="sign 1 KiB of data"} 1778
keys.asymmetric_crypto_ops{name="sign 10 KiB of data"} 1684
keys.asymmetric_crypto_ops{name="verify 512 B of data"} 393
keys.asymmetric_crypto_ops{name="verify 1 KiB of data"} 398
keys.asymmetric_crypto_ops{name="verify 10 KiB of data"} 386

# TYPE keys.asymmetric_crypto_margin gauge
keys.asymmetric_crypto_margin{name="encrypt 512 B of data"} 0.61
keys.asymmetric_crypto_margin{name="encrypt 1 KiB of data"} 0.64
keys.asymmetric_crypto_margin{name="encrypt 10 KiB of data"} 0.3
keys.asymmetric_crypto_margin{name="decrypt 512 B of data"} 0.48
keys.asymmetric_crypto_margin{name="decrypt 1 KiB of data"} 0.68
keys.asymmetric_crypto_margin{name="decrypt 10 KiB of data"} 0.57
keys.asymmetric_crypto_margin{name="sign 512 B of data"} 0.8
keys.asymmetric_crypto_margin{name="sign 1 KiB of data"} 0.92
keys.asymmetric_crypto_margin{name="sign 10 KiB of data"} 0.72
keys.asymmetric_crypto_margin{name="verify 512 B of data"} 0.57
keys.asymmetric_crypto_margin{name="verify 1 KiB of data"} 0.42
keys.asymmetric_crypto_margin{name="verify 10 KiB of data"} 0.31

# TYPE keys.asymmetric_crypto_samples counter
keys.asymmetric_crypto_samples{name="encrypt 512 B of data"} 87
keys.asymmetric_crypto_samples{name="encrypt 1 KiB of data"} 89
keys.asymmetric_crypto_samples{name="encrypt 10 KiB of data"} 90
keys.asymmetric_crypto_samples{name="decrypt 512 B of data"} 86
keys.asymmetric_crypto_samples{name="decrypt 1 KiB of data"} 87
keys.asymmetric_crypto_samples{name="decrypt 10 KiB of data"} 88
keys.asymmetric_crypto_samples{name="sign 512 B of data"} 87
keys.asymmetric_crypto_samples{name="sign 1 KiB of data"} 86
keys.asymmetric_crypto_samples{name="sign 10 KiB of data"} 88
keys.asymmetric_crypto_samples{name="verify 512 B of data"} 87
keys.asymmetric_crypto_samples{name="verify 1 KiB of data"} 88
keys.asymmetric_crypto_samples{name="verify 10 KiB of data"} 89

# TYPE keys.key_generation_ops gauge
keys.key_generation_ops{name="generate root asymmetric keypair"} 3563
keys.key_generation_ops{name="generate deterministic root keypair"} 107
keys.key_generation_ops{name="generate 256 bit symmetric key"} 319065

# TYPE keys.key_generation_margin gauge
keys.key_generation_margin{name="generate root asymmetric keypair"} 0.6
keys.key_generation_margin{name="generate deterministic root keypair"} 1.74
keys.key_generation_margin{name="generate 256 bit symmetric key"} 0.6

# TYPE keys.key_generation_samples counter
keys.key_generation_samples{name="generate root asymmetric keypair"} 85
keys.key_generation_samples{name="generate deterministic root keypair"} 83
keys.key_generation_samples{name="generate 256 bit symmetric key"} 89

# TYPE keys.random_bytes_ops gauge
keys.random_bytes_ops{name="random 512 B of data"} 332050
keys.random_bytes_ops{name="random 1 KiB of data"} 294369
keys.random_bytes_ops{name="random 10 KiB of data"} 134212

# TYPE keys.random_bytes_margin gauge
keys.random_bytes_margin{name="random 512 B of data"} 1.95
keys.random_bytes_margin{name="random 1 KiB of data"} 3.01
keys.random_bytes_margin{name="random 10 KiB of data"} 0.88

# TYPE keys.random_bytes_samples counter
keys.random_bytes_samples{name="random 512 B of data"} 85
keys.random_bytes_samples{name="random 1 KiB of data"} 76
keys.random_bytes_samples{name="random 10 KiB of data"} 85

# TYPE keys.recovery_code_ops gauge
keys.recovery_code_ops{name="generate 24 word recovery code"} 68387
keys.recovery_code_ops{name="generate 12 word recovery code"} 80916

# TYPE keys.recovery_code_margin gauge
keys.recovery_code_margin{name="generate 24 word recovery code"} 1.44
keys.recovery_code_margin{name="generate 12 word recovery code"} 1.58

# TYPE keys.recovery_code_samples counter
keys.recovery_code_samples{name="generate 24 word recovery code"} 80
keys.recovery_code_samples{name="generate 12 word recovery code"} 85

# TYPE keys.symmetric_crypto_ops gauge
keys.symmetric_crypto_ops{name="encrypt 512 B of data"} 38859
keys.symmetric_crypto_ops{name="encrypt 1 KiB of data"} 34177
keys.symmetric_crypto_ops{name="encrypt 10 KiB of data"} 29253
keys.symmetric_crypto_ops{name="decrypt 512 B of data"} 47148
keys.symmetric_crypto_ops{name="decrypt 1 KiB of data"} 43245
keys.symmetric_crypto_ops{name="decrypt 10 KiB of data"} 31158

# TYPE keys.symmetric_crypto_margin gauge
keys.symmetric_crypto_margin{name="encrypt 512 B of data"} 1.1
keys.symmetric_crypto_margin{name="encrypt 1 KiB of data"} 1.34
keys.symmetric_crypto_margin{name="encrypt 10 KiB of data"} 1.27
keys.symmetric_crypto_margin{name="decrypt 512 B of data"} 1.7
keys.symmetric_crypto_margin{name="decrypt 1 KiB of data"} 1.73
keys.symmetric_crypto_margin{name="decrypt 10 KiB of data"} 1.89

# TYPE keys.symmetric_crypto_samples counter
keys.symmetric_crypto_samples{name="encrypt 512 B of data"} 83
keys.symmetric_crypto_samples{name="encrypt 1 KiB of data"} 76
keys.symmetric_crypto_samples{name="encrypt 10 KiB of data"} 84
keys.symmetric_crypto_samples{name="decrypt 512 B of data"} 76
keys.symmetric_crypto_samples{name="decrypt 1 KiB of data"} 81
keys.symmetric_crypto_samples{name="decrypt 10 KiB of data"} 75

Newer performance (libsodium):

# TYPE keys.asymmetric_crypto_ops gauge
keys.asymmetric_crypto_ops{name="encrypt 512 B of data"} 7590
keys.asymmetric_crypto_ops{name="encrypt 1 KiB of data"} 7544
keys.asymmetric_crypto_ops{name="encrypt 10 KiB of data"} 6904
keys.asymmetric_crypto_ops{name="decrypt 512 B of data"} 10385
keys.asymmetric_crypto_ops{name="decrypt 1 KiB of data"} 10200
keys.asymmetric_crypto_ops{name="decrypt 10 KiB of data"} 9059
keys.asymmetric_crypto_ops{name="sign 512 B of data"} 20480
keys.asymmetric_crypto_ops{name="sign 1 KiB of data"} 19640
keys.asymmetric_crypto_ops{name="sign 10 KiB of data"} 11166
keys.asymmetric_crypto_ops{name="verify 512 B of data"} 15596
keys.asymmetric_crypto_ops{name="verify 1 KiB of data"} 15538
keys.asymmetric_crypto_ops{name="verify 10 KiB of data"} 12118

# TYPE keys.key_generation_ops gauge
keys.key_generation_ops{name="generate root asymmetric keypair"} 43471
keys.key_generation_ops{name="generate deterministic root keypair"} 115
keys.key_generation_ops{name="generate 256 bit symmetric key"} 1564369

# TYPE keys.random_bytes_ops gauge
keys.random_bytes_ops{name="random 512 B of data"} 424548
keys.random_bytes_ops{name="random 1 KiB of data"} 226078
keys.random_bytes_ops{name="random 10 KiB of data"} 24618

# TYPE keys.recovery_code_ops gauge
keys.recovery_code_ops{name="generate 24 word recovery code"} 71881
keys.recovery_code_ops{name="generate 12 word recovery code"} 81700

# TYPE keys.symmetric_crypto_ops gauge
keys.symmetric_crypto_ops{name="encrypt 512 B of data"} 380489
keys.symmetric_crypto_ops{name="encrypt 1 KiB of data"} 291515
keys.symmetric_crypto_ops{name="encrypt 10 KiB of data"} 63876
keys.symmetric_crypto_ops{name="decrypt 512 B of data"} 555805
keys.symmetric_crypto_ops{name="decrypt 1 KiB of data"} 416915
keys.symmetric_crypto_ops{name="decrypt 10 KiB of data"} 80024

# TYPE keys.x509_ops gauge
keys.x509_ops{name="generate certificate"} 126

Issues Fixed

Tasks

  • 1. Prototype the usage of ED25519 as the root key
  • 2. Prototype the usage of @scure/bip39 for generating recovery code and deterministically generating the ED25519 root key
  • 3. Prototype how the root key pair will be stored as an encrypted JWK (using JWE)
  • 4. Prototype how to standardise randomness source across all libraries
    * Note that panva/jose does not allow randomness to be standardised, this means the JOSE library will need to be replaced in the future
    * For now all libraries will mostly end up using node's native randomness generation because we are running in node runtime
    * The panva/jose library can be replaced... it's just mostly implementing JOSE RFCs that's the issue, but we are only using a limited set, otherwise can fork the library to provide an alternative implementation. Alternatively we would need to monkey patch a global webcrypto runtime
  • 5. Prototype how to generate symmetric key
  • 6. Prototype the usage of webcrypto based symmetric encryption and decryption
  • 7. Prototype the derivation of x25519 encryption/decryption keys from the root ed25519 keys, and the usage of these keys for asymmetric encryption
  • 8. Prototype how to generation of x509 certificates using the ed25519 root keys, and the replacement of node-forge with @peculiar/x509
  • 9. Test the new x509 certificates for TLS
    • Note that browsers do not support Ed25519 based x509 certs, even though web servers and curl does. This means we cannot have an HTTPS page with our root certificates, unless we derive a P-256 EC key from the Ed25519 root key and use that in the interim. Alternatively we don't bother with an HTTPS status page for now
    • Get the certificate information from CertManager and plug this into the TLS configuration.
  • 10. Benchmark new crypto against existing crypto
  • 11. Revert back to the staging's nix hash since we are not using 16.17's implementation of webcrypto (and its experimental ed25519 capability)
  • 12. Refactored key utilities to use libsodium instead of webcrypto
  • 13. Create KeyRing class which extracts all root key pair and KEM mechanism out of KeyManager.
  • 14. Test KeyRing by extracting out tests from KeyManager.test.ts.
  • 15. Applied memory locking to sensitive buffers so that key memory will not be swapped out.
  • 16. Create CertificateManager to extract out root certificate functionality out of KeyManager. It must take the KeyRing and DB as dependencies.
  • 17. Test CertificateManager by extracting out tests from KeyManager.test.ts.
  • 18. Replace all injections of KeyManager with KeyRing if they only require the NodeId.
    • verify and encrypt bin commands need to have the receiver public key added as a parameter. This needs to be propagated through the GRPC protobuf messages to the service handler.
    • CommandStart and CommandBootstrap need's it's configs updated.
    • When sending keys over the protobuf messages, replace the PEM types with the stringified JWT types.
    • Tests still need to be updated with the KeyRing changes.
  • 19. Not in scope to prototype the Observable of KeyRing, continue using the EventBus for the KeyRing.
    * This requires changing KeyManagerChangeData to CertificateManagerChangeData for now, as that's where the origin of renewing identity will come from.
  • 20. Remove all key pair fixtures from the test code, as it is now cheap to generate new keys.
  • 21. Remove KeyManager for now, and plan a new issue for a new KeyManager intended for secure computation usage and the management of arbitrary subkeys.
  • [ ] 22. Sigchain needs to use the CryptoKey by using keysUtils.importKey - Sigchain is being refactored, see Replace JOSE with our own tokens domain and specialise tokens for Sigchain, Notifications, Identities and Sessions #481
    • src/claims/utils.ts:36 createClaim takes the private key as the PEM format, this needs to be updated to take a private key directly.
  • 23. Consider the integration of WorkerManager for slow tasks specifically password hashing to prevent blocking the main thread. Benchmark if this is reasonable. Certificate signing also seems slow too, look into this too.
  • 24. The CertManager may have an expired current certificate occurring due not starting the CertManager for a while. This means we need to immediately renew the certificate upon start. Right now this is not guaranteed. Need to add in some renewal logic that occurs automatically if the current certificate is now expired.
  • 25. Remove everything that relies on PEM keys, and use JWK keys instead, plus do not show raw unencrypted private key JWK for any commands, anything that exports the root key pair should be encrypting the private key.
    • Use dictionary output formatter recursively when doing pk agent status command
    • Use wrapWithPassword when outputting the private key to show the key pair pk keys root, these should be showing the JWK for public key, and JWE for the private key, use dictionary formatting as well during human format, and JSON otherwise
    • New commands pk keys private, pk keys public, pk keys keypair. The private and keypair commands should be taking a password for wrapping. This should take --password-path or take from input prompt. The --format json should produce a useful JSON dictionary. For keypair it should be { publicKey: JWK, privateKey: JWKEncrypted }.
    • Verify that pk agent status produces a recursive dictionary output for public key JWK.
    • Verify that pk agent start and pk agent bootstrap can use all new key ring configuration and cert manager configuration.
  • 26. It is possible to DI a randomSource into wherever IdSortable and IdRandom is being constructed. This ensures that js-id is using keys/utils/random.ts instead of its own provided randomness.
  • 27. Verify TLS cert verification is working properly: Updating Crypto to use WebCrypto API and to replace RSA with ECC #446 (comment)
  • 28. Verify that Nodes no longer requires the public key, they can just use the NodeId.
  • 29. Replace JOSE with our own implementation of JWS since we cannot use it anymore. See Updating Crypto to use WebCrypto API and to replace RSA with ECC #446 (comment)
    • - src/tokens domain replacing JOSE JWS
    • - Testing src/tokens
    • - src/claims domain specialising src/tokens
    • - Testing src/claims
    • - Input validation of tokens using parsing functions
    • - Input validation of claims using parsing functions
    • - Adapting Sigchain to use the new claims and tokens
    • - Testing Sigchain with the new claims and tokens structure
    • - Indexing the claims in Sigchain for faster access for link identity and link node
    • - Updating identities to use the new tokens and claims
    • - Moving IdentityInfo and NodeInfo into gestalts
    • - Updating gestalts to record indexed information acquired from discovery - Gestalt Link Schema Refactoring - Derived from JOSE replacement #492
    • - Updating discovery to use the tokens and claims, in particular claim links and verifying claim links - Discovery Refactoring - Derived from JOSE replacement #493
    • - Updating the GRPC handlers dealing with cross signing node links
    • - Updating notifications to use the new tokens
      • - Changing General.json, VaultShare.json, and GestaltInvite.json to use parse/generate utilities instead of JSON schema. These utilities should go into the notifications/utils.ts. It can reference the validation/errors.ts.
      • - The messages should be using the tokens domain, and they should be "signed tokens"
    • - Updating sessions to use the new tokens
      • - Replace the usages of JOSE in the 2 utilities createSessionToken and verifySessionToken with calls to the tokens domain. The session token should then be a SignedToken. The signature is being signed by a symmetric key. Not the private key.
    • - Decentralising input validation parsers to avoid this SPOF
  • 30. Bring in hashing algorithms from https://sodium-friends.github.io/docs/docs/sha and use these. These can go into src/keys/utils/hashing.ts. (Replace node forge uses with these). Note that multiformats hashing may require a "webcrypto" polyfill, but we don't know for sure
  • 31. Do gestaltGraph.setNode() for the agent's own node at the startup of the agent. - Updating Crypto to use WebCrypto API and to replace RSA with ECC #446 (comment)
  • 32. Address the Sigchain.getClaims and Sigchain.getSignedClaims pagination testing problems: Sigchain Class API should provide paginated ordered claims by returning Array-POJO and indexed access #327 (comment)

Testing

Tests must start using fast check arbitraries and where suitable model based testing:

  • Identities
  • nodes
  • gestalts
  • discovery
  • notifications
  • vaults
  • grpc - Mostly fine? problem with utils
  • client
  • agent
  • bin
    • Some tests may be missing such as the identities invite
    • agent
    • keys
    • notifications
    • secrets
    • vaults
    • identities
    • nodes

Minimal tests for networking, grpc, nodes because we are likely to change it quite a bit in our next major rework of the networking with QUIC and RPC with JSONRPC.

Final checklist

  • Domain specific tests
  • Full tests
  • Updated inline-comment documentation
  • Lint fixed
  • Squash and rebased
  • Sanity check the final build

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