Which digital currency encryption algorithm is the most secure

2. In 2013, vircurex, the third largest trading platform of bitcoin in the world, was attacked twice by hackers, which made vircurex fall into a serious financial crisis. As a last resort, it stopped withdrawing bitcoin, Leyte and other virtual currencies in March 2014
on the morning of February 25, 2014, Mt. GOx, the world's first exchange, stolen 744408 bitcoins in a major bitcoin theft case. According to the average price of bitcoin on the 28th day, it is equivalent to 475 million US dollars. Mt. GOx went bankrupt
on January 26, 2018, coincheck illegally removed about 260000 NEM holders at about 02:57 on that day, and then suspended some functions
on March 7, 2018, the world's second largest exchange, "coin on binance exchange". A large number of users' accounts were stolen. In the face of the hacker attack, this morning, coin an rolled back all abnormal transactions
the above lesson of xuelinlin tells us that no matter how big the exchange is, it can't guarantee the security of core assets and users' digital currency
next, I would like to say that it is safer to withdraw your digital currency to Epay blockchain wallet
Why do you say that< 1. Epay wallet adopts multiple encryption, offline cold storage
2. Bank and risk control system, anti money laundering system
3. Secured transactions are more secure, and it is the first encrypted digital wallet supporting secured transactions in the world
Epay wallet is a digital currency encrypted wallet developed by Epay global payment, and Epay global payment is the best payment channel of global cryptocurrency, The official partner of tether and the world's largest usdt charging platform account for more than 80% of the total usdt, and it is the first digital currency wallet in the world to support the top five legal currencies. Epay global payment was established in 2014 with a registered capital of 200 million yuan. Epay global payment integrates the latest blockchain technology and e-wallet to provide convenient and flexible e-payment, global bank wire transfer, payment gateway and other services for global users with a series of advantages such as diversified payment methods, low cost, high security and trust.

3. The. Top domain name gives you an answer. Bitcoin is the first blockchain application and one of the most famous. The consensus mechanism it uses is pow.

4.

This problem is a bit awkward, because digital currencies all rise and fall, and there is no security. Do you want to ask about storage and trading. In terms of cloth storage and mining, I recommend Heshu hardware wallet and jiajiabao intelligent home miner. The core advantage of the proct is safety

take sum hardware wallet as an example. The advantages of sum hardware wallet are as follows:

first, the private key seed is encrypted layer by layer, physically isolated and never touched the Internet

first, when creating the wallet, the seed password is generated and stored in the local encryption chip, and the 10 digit payment password is required

then, the transaction is made in the wallet. At this time, the user needs to enter the payment password to obtain the private key to digitally sign the transaction, and the transaction is completed. In addition, the private key seed is permanently stored in the chip, which is physically isolated and never touches the Internet. There is no need to worry about my password being stolen by hackers

Second, the bank system verifies the financial level motherboard and encryption chip

uses the bank system to verify the financial level motherboard, and the private key seed is stored in the chip. If the proct is stolen or lost, and destroyed by malicious violence, the chip will trigger a self destruct circuit, and immediately permanently and irrecoverably delete all the information in the area

Third, it supports the withdrawal of global bitcoin ATM, which is convenient and fast

the reason why digital assets attract the attention of many fields in the world is that it is creating a global fast circulation, and the larger the circulation field is, the wider the scope is, and the higher its use value is. The core of digital assets is the medium it acts on among currencies. The Heshu wallet has built-in many mainstream exchanges in the world. It can trade digital assets anytime and anywhere. With one machine in hand, it can walk around the world without worry, and no longer have to worry about exchanging foreign currency

Fourth, multi-party co signature management asset is different from conventional digital wallet, multi signature wallet needs the authorization of multiple key holders to transfer digital currency, so the security of multi signature wallet is higher. Ordinary Wallet: a wants to transfer a bitcoin to X. A only needs his signature (using the private key) to complete the transaction. Sum Wallet: if a wants to transfer a bitcoin to x, a multi signature verification is set (at least two signatures of Abc3 indivials are required to transfer the money), then a needs B or C to complete the signature (using the private key) when a wants to transfer the money to X. I hope I can help you. Thank you

5.

With the advent of digital currency, the encryption algorithm of currency is becoming more and more important. What are the types of passwords

classical cipher types mainly include transposition cipher and rearrangement of alphabetic order messages. For example, "Hello world" becomes "ehlol owrdl"

Diffie Hellman and RSA algorithms have been widely used except for the first public example of high quality public key algorithms. Other asymmetric key algorithms include Cramer schup cryptosystem, ElGamal encryption and various elliptic curve techniques

some well-known cryptosystems include RSA encryption, Schnorr Signature, El Gamal encryption, PGP and so on. More complex password systems include e-cash system, signcryption system, etc. Now more cryptosystems include interactive proof systems, such as zero knowledge proof, which is used for secret sharing

for a long time, information collection and law enforcement agencies have been interested in cryptography. The importance of secret communication is self-evident. Because cryptography promotes privacy protection, it also attracts great interest of cryptography supporters. Therefore, there is a history of controversial legal issues around cryptography, especially since the emergence of cheap computers makes it possible to widely use high-quality cryptography

nowadays, cryptocurrency transactions are semi anonymous, which makes them very suitable for a series of illegal activities, such as money laundering and tax evasion. However, the proponents of cryptocurrency often attach great importance to the anonymity of digital currency and think that it can protect the privacy of users. Some cryptocurrencies are more private than others

Cryptocurrency is a new type of digital asset, which is based on the network distributed on a large number of computers. This decentralized structure enables them to exist outside the control of the government and central authorities. The term "cryptocurrency" also comes from the encryption technology used to protect the network

blockchain is an organization method to ensure the integrity of digital currency transaction data, and it is an important part of many cryptocurrencies. Many experts believe that blockchain and related technologies will subvert many instries, including finance and law. Cryptocurrencies have been criticized for many reasons, including their use for illegal activities, exchange rate fluctuations and the vulnerability of the infrastructure that underpins them. However, digital currency is also praised for its portability, divisibility, anti inflation and transparency

6. Aes256512, SM2, SM3 are relatively high-strength encryption algorithms, transparent encryption software red line privacy protection system is the use of such algorithms.

7. In this world, there is no most secure, only more secure. If I tell you that the serial number and password of every encryption software are encoded into every bit and byte, it means that everyone will have a set of independent encryption software.

8. Now there are two popular, one is irreversible after encryption, but each value is unique after encryption, such as MD5, which is used in user password setting. Before sending the password, MD5 is encrypted locally, and then stored directly in the user server. The next login is encrypted after entering the password, and then matched with the same password in the server database. But now many people are using exhaustive method to match the input and output one by one. Now many simple password encrypted MD5 can be found as a dictionary

another encryption method is public key and private key. The public key and private key represent two values respectively. Data encryption depends on these two values for operation. After the operation, the private key is left locally. The public key and encrypted text are sent to the other party, and the other party also has a private key, so it can be decrypted. However, anyone intercepts it midway, because there is no private key, it cannot be decrypted. This is generally used in VPN and online banking. Online banking that looks like the U disk thing, which is stored in the private key and decryption program, is not readable. However, this method also has disadvantages. If anyone divulges something, the whole encryption system will collapse

so there is no absolutely secure encryption algorithm

9. Encryption algorithm

encryption technology is the technology of encoding and decoding information. Encoding is to translate the original readable information (also known as plaintext) into code form (also known as ciphertext), and its reverse process is decoding (decryption). The key point of encryption technology is encryption algorithm, which can be divided into symmetric encryption, asymmetric encryption and irreversible encryption

symmetric encryption algorithm symmetric encryption algorithm is an early encryption algorithm with mature technology. In symmetric encryption algorithm, the sender of data will process the plaintext (original data) and encryption key together by a special encryption algorithm to make it become a complex encrypted ciphertext and send it out. After receiving the ciphertext, if the receiver wants to interpret the original text, it needs to decrypt the ciphertext with the encryption key and the inverse algorithm of the same algorithm, so that it can be restored to readable plaintext. In symmetric encryption algorithm, only one key is used. Both sender and receiver use this key to encrypt and decrypt the data, which requires the decryptor to know the encryption key in advance. Symmetric encryption algorithm is characterized by open algorithm, small amount of calculation, fast encryption speed and high encryption efficiency. The disadvantage is that both sides of the transaction use the same key, so the security is not guaranteed. In addition, each pair of users need to use a unique key that others don't know when they use symmetric encryption algorithm, which will make the number of keys owned by both sender and receiver increase geometrically, and key management becomes the burden of users. Symmetric encryption algorithm is difficult to use in distributed network system, mainly because of the difficulty of key management and high cost. The symmetric encryption algorithms widely used in computer private network system include DES and idea. AES advocated by the National Bureau of standards will replace des as a new standard

asymmetric encryption algorithm asymmetric encryption algorithm uses two completely different but matching keys public key and private key. When asymmetric encryption algorithm is used to encrypt files, only a pair of matching public key and private key can complete the process of plaintext encryption and decryption. Public key encryption is used to encrypt plaintext, and private key is used to decrypt ciphertext. The sender (encryptor) knows the receiver's public key, and only the receiver (decryptor) knows his private key. The basic principle of asymmetric encryption algorithm is that if the sender wants to send the encrypted information that only the receiver can read, the sender must first know the public key of the receiver, and then use the public key of the receiver to encrypt the original text; After receiving the encrypted ciphertext, the receiver can decrypt the ciphertext with his private key. Obviously, using asymmetric encryption algorithm, before the sender and receiver communicate, the receiver must send the public key which has been randomly generated to the sender, and keep the private key. Since the asymmetric algorithm has two keys, it is especially suitable for data encryption in distributed systems. RSA algorithm and DSA proposed by National Bureau of standards are widely used in asymmetric encryption. Encryption technology based on asymmetric encryption algorithm is widely used

irreversible encryption algorithm the characteristic of irreversible encryption algorithm is that there is no need to use the key in the encryption process. After inputting the plaintext, the system directly processes it into ciphertext through the encryption algorithm. The encrypted data can't be decrypted, so we have to re-enter the plaintext and process it through the same irreversible encryption algorithm again, Only when the same encrypted ciphertext is obtained and re recognized by the system can it be decrypted. Obviously, in this kind of encryption process, encryption is their own, decryption has to be their own, and the so-called decryption, in fact, is to re encrypt, the application of the "password" is the input plaintext. Irreversible encryption algorithm does not have the problem of key storage and distribution, so it is very suitable for use in distributed network system. However, because of the complexity of encryption calculation and heavy workload, it is usually only used in the case of limited data, such as password encryption, which is widely used in computer systems. In recent years, with the continuous improvement of computer system performance, the application field of irreversible encryption is graally increasing. MD5 algorithm invented by RSA company and SHS (secure hash standard) proposed by National Bureau of standards are widely used in computer network

encryption technology

encryption algorithm is the foundation of encryption technology. Any mature encryption technology is based on the combination of multiple encryption algorithms or the organic combination of encryption algorithm and other application software. Now we introce several encryption technologies which are widely used in the field of computer network applications

non repudiation technology the core of this technology is the public key technology of asymmetric encryption algorithm, which is completed by generating a digital signature related to user authentication data. When the user executes a transaction, this signature can ensure that the user can not deny the fact that the transaction happened in the future. Because the operation process of non repudiation technology is simple, and it is directly included in some normal electronic transactions of users, it becomes an important guarantee for current users to conct e-commerce and obtain business trust

PGP (pretty good privacy) technology PGP technology is a mail encryption technology based on asymmetric encryption algorithm RSA public key system, and it is also a simple, convenient and popular encryption software. PGP technology can not only encrypt e-mail, but also prevent unauthorized persons from reading letters; It can also attach digital signature to the e-mail, so that the receiver can clearly understand the real identity of the sender; It can also make people communicate safely without any secret channel. PGP technology creatively combines the convenience of RSA asymmetric encryption algorithm with traditional encryption system, and adopts the ingenious design of seamless combination in digital signature and key authentication management mechanism, making it almost the most popular public key encryption software package

digital signature technology is a typical application of asymmetric encryption algorithm. The application process of digital signature is that the sender of data source uses its own private key to encrypt the data checksums or other variables related to the data content to complete the legal "signature" of the data. The receiver of data uses the public key of the other party to interpret the received "digital signature", and uses the interpretation results to test the integrity of the data, To confirm the validity of the signature. Digital signature technology is an important technology to confirm the identity in the virtual environment of network system. It can completely replace the "autograph" in the real process, which is guaranteed technically and legally. In the aspect of public key and private key management, the application of digital signature is just opposite to PGP technology. In digital signature applications, the sender's public key can be easily obtained, but his private key needs to be strictly confidential

PKI (public key infrastructure) technology PKI technology is a public key infrastructure which takes asymmetric encryption technology as the core and can provide security services for the network. PKI technology is mainly used in the Internet environment, which provides a unified identity authentication, data encryption and integrity protection mechanism for complex Internet systems. Due to the great advantages of PKI technology in the field of network security, it is favored by core application systems such as banks, securities, government and so on. PKI technology is not only the core of information security technology, but also the key and basic technology of e-commerce. Due to the lack of physical contact in e-commerce, e-government and other activities through the network, it is very important to verify the trust relationship by electronic means. PKI technology can effectively solve the security problems of confidentiality, authenticity, integrity, non repudiation and access control in e-commerce applications. A practical PKI system must also fully consider the interoperability and scalability. PKI system includes authentication center (CA), registration center (RA), policy management, key and certificate management, key backup and recovery, revocation system and other functional moles should be organically combined

the future trend of encryption

although the double key cryptosystem is more reliable than the single key cryptosystem, the encryption rate of the double key cryptosystem is only 1 / 100 or even 1 / 1000 of the single key cryptosystem when it carries out large amount of information communication e to the complexity of calculation. It is because different encryption algorithms have their own advantages that all kinds of encryption systems will develop together for a long time in the future. In the protocol standard set (secure electronic transaction) for e-commerce jointly launched by IBM and other companies in 1996 and the PGP technology jointly developed by many countries in 1992, hybrid cryptosystems including single key cryptosystem, double key cryptosystem, one-way hash algorithm and random number generation algorithm are adopted, This seems to show the future of Cryptography Application from one side

in the field of single key cryptography, one key at a time is considered to be the most reliable mechanism. However, because the key stream generator in stream cipher system fails to break through the finite cycle in algorithm, it has not been widely used. If we find a key stream generator which is close to infinite loop in algorithm, the system will have a qualitative leap. In recent years, the research of chaos theory has brought the dawn of a breakthrough in this direction. In addition, the energetic quantum cryptography is considered as a potential development direction because it is based on the theory of Optics and quantum mechanics. This theory is undoubtedly an ideal solution to enhance information security in optical fiber communication and deal with the deciphering of quantum computing capability

e to the application requirements of civil systems such as e-commerce, authentication encryption algorithm will also have great development. In addition, in the traditional cryptosystem, there will be new members like idea. One of the main characteristics of new members is that they have innovation and breakthrough in the algorithm, not just to modify or improve the traditional algorithm. Cryptography is a developing young subject, in which any unknown encryption / decryption mechanism may occupy a place

at present, there is no very effective solution to the security problem of information system or e-mail. The main reason is that e to the inherent heterogeneity of the Internet, there is no single trust institution that can meet all the needs of the whole process heterogeneity of the Internet, and there is no single protocol that can be applied to all cases of the whole process heterogeneity of the Internet. The only way to solve this problem is to rely on the software agent, that is to use the software agent to automatically manage the user's certificate (that is, the user's trust structure) and all the user's behaviors. Every time a user wants to send a message or an e-mail, the agent will automatically negotiate with the other agent to find a common trust organization or a common protocol to communicate. In the Internet environment, the next generation of security information system will automatically send encrypted e-mail for users. Similarly, when a user wants to send e-mail to someone, the user's local agent will first interact with each other's agent to negotiate a suitable authentication authority for both sides. Of course, email also needs to be free