On January 10, Kushen, a blockchain asset hardware wallet company, launched a new product—the card-type hardware wallet ColdLar Touch. How does ColdLar Touch work? How to securely store blockchain assets? What "black technology" is contained in it? Let's reveal the secret together!

Recently, Kushen, a blockchain asset hardware wallet company, has launched a new product—the card-type hardware wallet ColdLar Touch. The new series of products ColdLar Touch has a built-in CC EAL6+ security encryption chip, which supports Android phones to interact with Kushen APP through NFC transmission, and supports sending and receiving mainstream currencies such as Bitcoin, Ethereum and ERC20 Tokens. In addition, you can also set a security password, back up and restore the mnemonic, and store the private key in a secure chip that is completely isolated from the network, completely eliminating the risk of the private key being stolen by network hackers.

Safety

Safety

ColdLar Touch card wallet is a kind of hardware cold wallet. The most shining feature of this wallet is a built-in CC EAL6+ security chip with a security certification level that meets international certification standards.

According to the product design officer of Kushen Wallet, CC is the basic criterion for evaluating the security of information technology products. It is the result of the efforts of the International Organization for Standardization to unify the existing assessment criteria. It is also the most authoritative and rigorous security certification standard in the world. . The International Organization for Standardization divides the CC evaluation level into seven levels from low to high, EAL 1-7. CC EAL6+ refers to the enhanced level of CC EAL 6. Generally speaking, the safety requirements of commercial products are within CC EAL 5, and the public in life Commonly used bank chip debit cards require CC EAL5+ certification, and higher encryption levels such as CC EAL6 and CC EAL7 are military grade.

Kushen uses military-grade chips for wallet products, which shows that its team attaches great importance to the safe storage of digital assets. ColdLar Touch card-type hardware wallet adopts Hierarchical Deterministic (HD for short) technical solution. Users randomly generate mnemonic words, and private keys of different currencies are generated from mnemonic words, so it can be used in any other You can restore and manage your blockchain assets in your wallet, easily manage multi-chain assets, and truly achieve absolute privacy of asset ownership.

convenient

ColdLar Touch card-type hardware wallet is compact, portable and practical, with a total weight of 6g and a thickness of only 0.88mm. ColdLar Touch is the same size as a physical bank card and can be placed in wallets, ticket holders and other personal belongings.

In addition to the convenience of carrying, in terms of use, ColdLar Touch directly uses NFC technology to interact with Kushen APP, and the upgrade interface operation is easier.

In addition, the ColdLar Touch card-type hardware wallet does not have a built-in battery. When signing, the card wallet and the mobile phone transmit data, and the mobile phone provides the power required for the chip calculation through the electromagnetic field, which greatly reduces the complexity of the card result and increases the overall durability of the card-type hardware wallet.

expandable

ColdLar Touch card-type hardware wallet has good expandability. It supports Bitcoin, Ethereum, and all ERC20-TOKEN. In the future, it can support more currencies by upgrading the Kushen hot-end APP.

ColdLar Touch can customize the appearance and layout. It is printed by a combination of hot stamping and embossing processes, UV coating and other processes, which is exquisite and fashionable.

one touch

The biggest highlight of ColdLar Touch is that it makes the cold wallet look like a card and transmits it completely through encrypted NFC technology.

NFC is a short-range wireless communication technology. The transmission distance of NFC needs to operate within a short distance of 2 cm at a specific frequency (the distance between the card wallet and the mobile phone is within 1 cm). Compared with other short-distance communication technologies, NFC It has obvious advantages in safety. Kushen innovatively applies this secure transmission technology to cold wallet transmission at the hot and cold ends.

NFC technology makes the simultaneous transmission of cold and hot ends more convenient during the transaction process, and also makes the transaction capacity no longer limited by the traditional cold wallet QR code. It only takes 0.1 seconds to complete the signature and broadcast the transaction to the blockchain network. Among them, the speed has achieved "extreme speed".

The use of hardware wallets is nothing more than two aspects: easy to carry and store, and convenient and safe transmission and reception. ColdLar Touch card-type hardware wallet can be said to be impeccable in both aspects, and at the same time meet the expandable attributes. At present, ColdLar Touch products have officially opened for pre-sale, and the official price is 199 yuan. (In the limited-time special promotion of WeChat Mini Program, you can get a discount of 45 yuan immediately when you receive the coupon)

Kushen has been committed to the safe storage solution of blockchain assets and promotes the development of the blockchain industry. As the commercial application of blockchain becomes more and more mature, Kushen may rely on blockchain technology to achieve cornering overtaking again in the future and lead the world's technological trend.