fhEVM

No entries match these filters. Clear filters

1. v0.14.5 Oct 30, 2026 · issue 126

   fhEVM adds a relayer query option to the SDK and removes transient allowance for inputs to sender in the Solidity library.

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.14.5 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.14.5

   • Add a relayer query option to the SDK via the backported relayer query option (#4544), giving developers control over relayer selection when submitting encrypted transactions.
   • New supported platformRemove transient allowance for inputs to sender in the Solidity library, changing how input permissions are granted on-chain.

   2 details in Everything

   └──▷ BREAKING ON UPGRADE

   • !Transient allowance for inputs to sender has been removed from the Solidity library (library-solidity); contracts relying on this allowance behaviour will no longer work as before.
2. v0.14.3 Oct 9, 2026 · issue 099

   fhEVM v0.14.3 adds environment-variable-driven e2e coprocessor config generation for the test suite.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.14.3 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.14.3

   • Generates e2e coprocessor configuration from environment variables in the test suite, enabling automated and CI-friendly stack setup.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠

   1 detail in Everything

3. v0.14.2 Oct 2, 2026 · issue 093

   fhEVM v0.14.2 adds BNB chain support to host-contract chainIds and improves scalar operand handling.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.14.2 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.14.2

   • Adds BNB to the supported chainIds in host-contracts, enabling FHE workflows on the BNB chain.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠
   • Improves scalar operand handling in host-contracts for FHE arithmetic operations.
   • Adds BNB to the supported chainIds in host-contracts, enabling FHE workflows on the BNB chain.⁠︀︄︇︀︅︉︀︅︀︀︃︀︀︅︅︀︅︊︀︄︆︀︃︄⁠

   1 more in Everything

4. v0.13.4 Sep 4, 2026 · issue 065

   fhEVM v0.13.4 backports the Polygon CLI and expands the relayer to return all user-decrypt shares.

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.13.4 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.13.4

   • Backports the Polygon CLI to the 0.13.x release line, enabling Polygon-targeted workflows on the stable branch.
   • Relayer now returns all user-decrypt shares per request, rather than a subset.
   • Backports the Polygon CLI to the 0.13.x release line, enabling Polygon-targeted workflows on the stable branch.

   1 more in Everything

5. v0.14.1 Sep 1, 2026 · issue 061

   fheVM v0.14.1 adds Polygon mainnet chain support and KMSKMSA managed service that creates, stores, rotates and controls access to encryption keys, usually backed by HSMs. Applications ask it to encrypt or decrypt rather than holding keys themselves. canonical mirror tasks for host contracts.

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.14.1 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.14.1

   • Adds tasks to mirror the canonical KMS context and epoch onto replica chains in host contracts.
   • Adds Polygon mainnet chain configuration to the SDK and Solidity library.

   2 details in Everything

6. v0.14.0 Aug 14, 2026 · issue 054

   fhEVM v0.14.0 adds KMSKMSA managed service that creates, stores, rotates and controls access to encryption keys, usually backed by HSMs. Applications ask it to encrypt or decrypt rather than holding keys themselves. epoch lifecycle, unified EIP-712 decryption, confidential bridging, and new Solidity FHE APIs

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.14.0 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.14.0

   └──▷ USE IT
   Call the new widened multiply-divide operation on encrypted integers inside a confidential Solidity contract.
   solidity copy

   euint64 result = FHE.mulDiv(encryptedA, encryptedB, encryptedDivisor);

   Convert any encrypted value to an external representation for off-chain consumption or bridging.
   solidity copy

   externalEuint64 ext = FHE.toExternal(encryptedValue);

   Request a unified EIP-712 decryption permit from the SDK with the new per-handle, duration-in-seconds model.
   javascript copy

   const permit = await signDecryptionPermit({ handles: [handle], durationSeconds: 3600, signer });

   • Adds destroyKmsEpoch to the KMS connector for epoch destruction as part of the KMS context/epoch lifecycle, alongside single-in-flight enforcement, signature-checked epoch activation confirmations, and getters for context-switch monitoring.
   • Adds deployProtocolConfigFromMigration, deployKMSGenerationFromMigration, upgradeKMSGeneration, and verify Hardhat tasks as the new required deployment and rollout path replacing the removed KMSGeneration Gateway migration path.
   • Adds --seed-start-block flag to the host-listener poller for controlling coprocessor block replay start point.
   • Adds FHE.toExternal(...) for all encrypted types, enabling conversion of any encrypted value to an external representation from Solidity.
   • Adds FHE.mulDiv(...) for widened multiply-divide operations on encrypted integers, with HCU accounting including the scalar-type check for fheMulDiv.

   +10 more show less

   • Ships unified EIP-712 user decryption via signDecryptionPermit(), merging self and delegated decryption into one request model with per-handle ownership, durationSeconds, protocol-versioned permits, and ERC-1271 smart-account signature support.
   • Adds the ConfidentialBridge (LayerZero-based) for encrypted handle bridging across chains, including bridge events, Solidity helper APIs, deploy/prepareUpgrade tasks, LZ-delegate auto-resync to the ACLACLAn access control list, a set of rules allowing or denying operations for particular users, services or network addresses. It decides who can use a resource. owner, and post-upgrade endpoint verification.
   • Adds new reinitializer versions for FHEVMExecutor, HCULimit, and ProtocolConfig host/gateway contracts with protocol storage for KMS epochs, context anchors, decryption invalidation, and confidential bridge configuration.
   • Adds per-context KMS threshold setters with caps on threshold and signer set for hardened decryption consensus.
   • Adds SNSSNSAmazon Simple Notification Service, a managed pub/sub messaging service from AWS that lets tools fan out alerts or events to multiple subscribers — queues, email, HTTP endpoints, or Lambda functions — without managing broker infrastructure./S3 ciphertext migration support with dedicated concurrency and DB pool controls, stalled-error backoff, and a wave1 migration verification script.
   • Adds ciphertext attestation plumbing and shadow verification in the KMS connector, including a shared ciphertext-attestation crate, embedded ciphertext format, coprocessor registry refresh, and S3 material verification.
   • Adds automatic protocol/WASMWASMA binary instruction format for a stack-based virtual machine, maintained by the W3C, that lets code compiled from any language run at near-native speed inside a sandboxed environment across browsers and servers. version resolution and bundled TFHE to the SDK, with cleartext mode, multi-version host-contracts support, and a narrower public API surface.
   • Adds full block payloads with adaptive Redis drain and stalled dependency-chain parking to the coprocessor for improved migration and live-operation reliability.
   • Adds replay of quorum-accepted input proofs and drift-recovery hardening with documented quorum requirements to the coprocessor.
   • Adds latency/gap metrics to the coprocessor for observability of block-processing performance.

   15 details in Everything

   └──▷ BREAKING ON UPGRADE

   • !The signDecryptionPermit() API is now the required SDK decryption permit path; durationDays is replaced by durationSeconds, permit objects carry a protocol version, and several low-level SDK exports were removed in favor of high-level encrypt/decrypt/sign actions.
   • !User-decryption authorization moves to the unified v2 flow; legacy on-chain request shapes remain only for the deprecation window.
   • !The KMSGeneration Gateway migration path was removed; deployment and rollout flows must use deployProtocolConfigFromMigration, deployKMSGenerationFromMigration, upgradeKMSGeneration, verify tasks, and the KMS/wave1 migration verification scripts.
   • !The coprocessor's Ethereum chain-ID flag was renamed to the canonical protocol-config chain ID; host_chains seeding is now declarative — coprocessor configuration must be updated accordingly.
7. v0.13.2 Jul 23, 2026 · release notes

   fhEVM v0.13.2 adds --seed-start-block to host-listener and polygon amoy testnet support

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.13.2 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.13.2

   └──▷ TRY IT
   Start the host-listener poller from a specific block height instead of genesis.
   copy

   $ host-listener --seed-start-block=12345678

   Reference the Polygon Amoy testnet configuration in your Solidity project.
   solidity copy

   // import "@fhevm/lib-solidity/config/polygon-amoy.sol";

   • Adds --seed-start-block flag to the host-listener poller to allow specifying a starting block for seeding operations
   • Adds support for Polygon Amoy testnet via new chain configuration in library-solidity

   2 details in Everything

8. v0.13.1 Jul 3, 2026 · release notes

   Adds reliability metrics to the coprocessor and IAMIAMIdentity and Access Management — a framework of policies and services for controlling who can authenticate to systems and what resources they are authorized to use, letting cyber tools enforce least-privilege and audit access.-auth support in listener_core images.

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.13.1 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.13.1

   • Adds reliability metrics to the coprocessor host-consumer component
   • Enables iam-auth feature in listener_core container images

   2 details in Everything

9. v0.13.0 Jun 11, 2026 · release notes

   fhEVM v0.13.0 adds PRSS key shares re-sharing, FHE handle ACLACLAn access control list, a set of rules allowing or denying operations for particular users, services or network addresses. It decides who can use a resource. deny lists, and new hardhat deployment scripts

   └──▷ GET THIS VERSION

   copy

   $ git clone --branch v0.13.0 https://github.com/zama-ai/fhevm.git
   # already have the repo? check out this version:
   $ git checkout v0.13.0

   • Adds PRSSInit and KeyReshareSameSet flows for threshold key share regeneration.
   • Adds IsAccountDenied function to library-solidity to check account restrictions.
   • Adds ACL deny list support in host-contracts to block specific accounts from persisting FHE handles.

   3 details in Everything

10. v0.12.0 Apr 8, 2026 · release notes

    fhEVM v0.12.0 adds per-block HCU metering, context-aware decryptions, and coprocessor state revert.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.12.0 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.12.0

    └──▷ USE IT
    Enable ciphertext drift detection by comparing local digests against on-chain consensus during gateway startup
    shell copy

    gateway listen --ciphertext-commits-address <checksum_address>

    • Adds --ciphertext-commits-address flag to the gateway listener for opt-in ciphertext drift detection via local digest comparison against on-chain consensus
    • Adds revert_coprocessor_db_state.sql script packaged in the db-migration Docker image to revert a coprocessor database to a previous block number
    • Adds HCULimit contract with configurable per-block, per-transaction, and per-transaction-depth Homomorphic Compute Unit limits and a whitelist mechanism for privileged callers

    3 details in Everything

    └──▷ BREAKING ON UPGRADE

    • !MultichainACL.sol, MultichainACLChecks.sol, and IMultichainACL.sol are removed entirely from gateway-contracts
    • !isUserDecryptionReady signature changed — the address userAddress parameter was removed; old signature preserved via backward-compat overload but is deprecated
    • !FHEVMExecutor prepends COMPUTATION_DOMAIN_SEPARATOR (FHE_comp) and appends blockhash(block.number-1) + block.timestamp to handle hashing
    • !New HCULimit contract required — FHEVMExecutor REINITIALIZER_VERSION bumped to 3. Initialization requires hcuCapPerBlock, maxHCUDepthPerTx, and maxHCUPerTx parameters.
    • !ACLACLAn access control list, a set of rules allowing or denying operations for particular users, services or network addresses. It decides who can use a resource. REINITIALIZER_VERSION bumped to 4 — ExpirationDateBeforeOneHour error replaced by ExpirationDateInThePast
    • !ECDSAECDSAThe elliptic-curve signature algorithm behind most TLS certificates, blockchains and many hardware keys. It is one of the algorithms post-quantum signatures are meant to replace..sol renamed to FhevmECDSA.sol — import path changed from cryptography/ECDSA.sol to cryptography/FhevmECDSA.sol, library renamed from ECDSA to FhevmECDSA
    • !Tenants table removed from DB
    • !Legacy tfhe-worker gRPCgRPCAn open-source remote procedure call framework from Google that uses HTTP/2 and Protocol Buffers to let services call each other's functions across a network, giving tools low-latency, strongly typed inter-process communication. endpoint removed
11. v0.11.0 Feb 13, 2026 · release notes

    fhEVM v0.11.0 adds GPUGPUA graphics processing unit, a processor that performs many calculations in parallel. AI workloads use GPUs to speed up model training and inference. acceleration for ZK proofs, host-listener poller mode, Confidential Tokens Registry with ERC7984, and Operator Staking system.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.11.0 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.11.0

    • gpu acceleration is available for ZK proof verification, Switch-and-Squash (SnS), and re-randomisation in the coprocessor.
    • New host-listener poller mode provides an alternative to WebSocketWebSocketA protocol that upgrades an HTTP connection into a persistent, full-duplex channel, letting a server push data to a client without repeated polling. Cyber tools use it for real-time event streaming and live command output.-based event listening for the coprocessor scheduler.
    • Introduces Confidential Tokens Registry and ERC7984 upgradeable wrapper contracts for token management.
    • Adds a new Operator Staking system using ERC4626-based contracts, including reward distribution logic.

    4 details in Everything

12. v0.10.6 Jan 7, 2026 · release notes

    Adds coprocessor dependence chain release mechanism

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.10.6 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.10.6

13. v0.10.5 Dec 29, 2025 · release notes

    fhEVM v0.10.5 adds a non-blocking distributed locking mechanism to tfhe-worker.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.10.5 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.10.5

14. v0.10.2 Dec 9, 2025 · release notes

    Adds --only-catchup-loop mode to the coprocessor host-listener CLI.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.10.2 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.10.2

    └──▷ TRY IT
    Run the host listener in catch-up only mode during initial bootstrap or maintenance windows.
    copy

    $ coprocessor host-listener --only-catchup-loop

15. v0.9.13 Nov 14, 2025 · release notes

    Introduces FHE.checkSignatures for verifying homomorphic signatures and refactors ZamaConfig.sol.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.13 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.13

    └──▷ USE IT
    Verify the signature of an encrypted value before using it in a computation.
    code copy

    bool isValid = FHE.checkSignatures(fheVal, publicKey);

    • Adds FHE.checkSignatures to verify encrypted data signatures

    1 detail in Everything

16. v0.9.10 Nov 5, 2025 · release notes

    Replaces the requestDecryption API with a new codegen feature for managing decryption requests

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.10 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.10

    • Introduces a new codegen feature that replaces the previous requestDecryption method
    • Removes the legacy requestDecryption function from the library API

    2 details in Everything

17. v0.9.6 Nov 3, 2025 · release notes

    Adds PRSSInit and KeyReshareSameSet flows for key management and coprocessor metrics

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.6 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.6

    • Adds PRSSInit and KeyReshareSameSet flows to handle private random shared secret initialization and key resharing within the same set.
    • Exposes new metrics for the gw-listener component in the coprocessor to support observability.

    2 details in Everything

18. v0.9.5 Oct 29, 2025 · release notes

    fhEVM v0.9.5 adds a function to update operators in gateway contracts.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.5 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.5

19. v0.9.2 Oct 17, 2025 · release notes

    fhEVM v0.9.2 exposes coprocessor_threshold config variable for coprocessor configuration.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.2 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.2

20. v0.9.1 Oct 17, 2025 · release notes

    Adds per-transaction execution metrics for fhEVM.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.1 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.1

    • gw-listener accepts bucket.domain URLs for object storage integration.

    1 detail in Everything

21. v0.9.0 Oct 6, 2025 · release notes

    fhEVM v0.9.0 adds Gateway-triggered keygen, PauserSet contract, and in-event decryption shares

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.9.0 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.9.0

    • Adds Gateway method to trigger key generation directly
    • Moves user decryption share delivery from on-chain storage to event data emitted by the Gateway
    • Introduces PauserSet contract for pausing logic

    3 details in Everything

    └──▷ BREAKING ON UPGRADE

    • !Gateway check... functions replaced by non-reverting is... boolean getters
    • !contractsChainId field removed from user decryption request EIP712 struct
22. v0.8.0 Sep 2, 2025 · release notes

    fHEVM v0.8.0 adds a new KMSKMSA managed service that creates, stores, rotates and controls access to encryption keys, usually backed by HSMs. Applications ask it to encrypt or decrypt rather than holding keys themselves. connector, compressed ciphertext support for SnS/KMS, and protocolId() to SepoliaConfig.

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.8.0 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.8.0

    • New KMS connector integration
    • Compressed ciphertext support for the Secret Number Service (SnS) worker and Key Management System (KMS)
    • Added protocolId() function in SepoliaConfig to follow ERC standards
    • Added extraData generic field to gateway functions, events, and signed structs

    4 details in Everything

    └──▷ BREAKING ON UPGRADE

    • !Changed callback function expected by Oracle following ERC standards
    • !Changed storage layout for the library following ERC standards
23. v0.7.7 Jul 14, 2025 · release notes

    Adds multi-pod coordination for kms-connector

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.7.7 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.7.7

24. v0.7.0 Jun 18, 2025 · release notes

    fhEVM v0.7.0 introduces Zama Protocol with Gateway orchestration and FHE.requestDecryption

    └──▷ GET THIS VERSION

    copy

    $ git clone --branch v0.7.0 https://github.com/zama-ai/fhevm.git
    # already have the repo? check out this version:
    $ git checkout v0.7.0

    • Adds Gateway as a core component to orchestrate protocol operations
    • Enforces coprocessor-side input verification for enhanced security
    • Coprocessors now prepare ciphertexts for the decryption pipeline
    • Restructures and modernizes the Solidity library for the new architecture
    • Adds FHE.requestDecryption with msg.value support, replacing deprecated GatewayCaller

    +1 more show less

    • Introduces per-transaction operation limits, replacing previous per-block limits

    6 details in Everything

    └──▷ BREAKING ON UPGRADE

    • !Library renamed from TFHE to FHE
    • !ebytesXXX types removed
    • !einput replaced with externalEuintXXX, externalEbool, and externalEaddress
    • !Previous per-block limit replaced by per-transaction operation limits