Armory is an advanced open source program for managing multiple bitcoin wallets with a high level of security available. The software uses wallet encryption, can print permanent paper backups of your wallets, and store your bitcoins on an offline computer for maximum security from online threats.
Armory was designed from the ground up to focus first on maximizing security, and then provide a well thought-out interface to make using this security as simple as possible.
Armory is used by some of the most heavily-invested, and most paranoid Bitcoin enthusiasts for maximum privacy and security.
- Offline wallets (also known as, “cold storage”).
- Multi-wallet interface – manage as many wallets as you want simultaneously. Armory was designed from the start for multi-wallet operations without limit on number.
- Deterministic wallets with paper-backup print dialog.
- Watching-only wallets – fork a “watching-only” wallet that contains no private-key data, but can still be used generate addresses and confirm payments.
- Wallet encryption with time- and memory-bound key derivation: AES256 in-place key encryption. Encryption key is generated via script-based algorithm to eliminate GPU-acceleration in brute-force passphrase guessing.
- Import/Sweep Addresses – import private keys into your (deterministic) wallet. Sweeping is possible on any existing wallet-address, or as an alternative to importing an untrusted private key. Supports private keys in hex, base58, and mini-private-key format used on Casascius physical bitcoins.
- Corruption-resistant wallet files with automatic detection and correction of HDD byte errors – wallet-update logic guarantees all atomic file operations.
- Easy offline wallet operations.
- Usermode options – Choose between “Standard”, “Advanced” and “Developer”, to scale the level of information flow according to your preferences. “Standard” user mode has a reduced set of functionality and only presents information necessary for basic wallet management and transactions.
- Message signing with your Bitcoin addresses.
- Seamless integration for signing transactions completely offline.
- Perform your own elliptic curve calculations using secp256k1 elliptic curve.
- Graphical keyboard to protect against keyloggers.
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