Certen Key Vault by Jason K Gregoire

Secure key vault and signer for the Certen Protocol - generates, stores, and signs with ED25519 and secp256k1 keys

Experimental

Available on Firefox for Android™

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About this extension

Certen Key Vault is a secure browser extension for managing cryptographic
keys and signing blockchain transactions across Accumulate and EVM
networks.

Your private keys are encrypted with AES-256-GCM and never leave your
browser. Every signing request requires your explicit approval through a
visual popup showing transaction details and the requesting origin.

Features:

Password-protected encrypted vault (AES-256-GCM, PBKDF2-SHA512, 600,000
iterations)
Ed25519, secp256k1, and BLS12-381 key generation
BIP-39 mnemonic seed phrase backup and recovery
HD wallet with BIP-44/SLIP-0010 key derivation
Transaction signing for Accumulate, Ethereum, and cross-chain intents
EIP-191 and EIP-712 message signing
Multi-chain address derivation (Ethereum, Solana, Cosmos, Aptos, Sui,
TRON, TON, NEAR)
Auto-lock after 15 minutes of inactivity
No analytics, no telemetry, no data collection

Integrates with the Certen Protocol web application via the window.certen
provider API.

Open source: https://github.com/certenIO/certen-key-vault

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Certen Key Vault by Jason K Gregoire

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Data collection: