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identity of each other. Identity authentication is divided into one-way authentication and two-way authentication. One-way authentication only the server side has the certificate, two-way authentication in the server and the client has the certificate. A typical HTTPS site only has a certificate for the server and no certificate for the client. One-way certification is a simplified version of two-way certification, the discussion process in this article without special instructions are consider
This article all source code download:/files/chnking/encryptlongdata.rarI. Use of certificates combined with symmetric encryption algorithm to add and decrypt Long dataThe previous section discussed how to encrypt data using RSA certificates, which mentions: "The RSA implementation of dotnet has a characteristic that it must add some random numbers in the clear text, so the plaintext cannot fill 128 bytes, the actual test, the plaintext is up to 117 b
Symmetric key encryption in HTTPS, public key encryption, digital certificate keyWe call unencrypted content plaintext, and the encrypted content is called ciphertext.In short, to encrypt a piece of plaintext, you can enter this content into an encryption function, output ciphertext. However, this simple encryption met
PDF encryption and decryption (I)-Analysis of PDF encryption dictionary objects 0 keywordsPDF encryption has two passwords: Owner (to set the PDF document permission or change the permission) password and user password. In this document, the master (permission) password and user password are translated, I think the permission password is better, so it is called t
First of all, it is said that SSH is not the three main framework of Java tradition, but a kind of security shell protocol based on application layer and transport layer, and familiar with Linux friends often use a tool of SSH Secure Shell cilent. This paper is also based on this tool encryption principle of learning, in the SSH encryption principle, the use of RSA Asymmetric
Encryption in another way -Liu taotao, a famous programmer, talks about the distorted encryption and transformation technologyWhat is distorted encryption transformation? This is a software I developed. The official term may be "mixed encryption". I name my software "distorted encr
Digital signatures are common: Before learning about digital signatures, you must first understand the SHA-1 digest and RSA encryption algorithm. Then, learn more about digital signatures.SHA-1 SHA-1 (secure hash algorithm) is Data encryption algorithm.The idea of this algorithm is to receive a piece of plain text, and then convert it into a section (usually smaller) ciphertext in an irreversible way, it ca
PHP Development of Web applications, often complete the user registration information, registration information, including mailbox and password verification issues, this article is mainly for encryption of the technician way. MD5 I believe many PHP developers in the first contact with PHP, the first encryption function to handle the password may be MD5, I was like this: Copy Code code as follows:
Encryption and decryption overview and. Net Support for encryption and decryption Introduction In some important application scenarios, data transmission over the network needs to be encrypted to ensure security. This article briefly introduces some concepts of encryption and decryption, as well as related digital signatures and certificates, and finally introd
PHP Development Web application, often complete user registration information, registration information including the mailbox and password verification issues, this article is mainly for the password encryption technician way. MD5 I believe that many PHP developers in the first contact with PHP, the first cryptographic function to handle the password may be MD5, I was like this: Copy the Code code as follows:$password = MD5 ($_post["password"]); Is t
Recently accidentally and colleagues to exchange data security transmission problems, think of their own used RSA asymmetric encryption algorithm, idle down to sum up. What is RSA encryption? RSA algorithm is the most popular public key cryptography algorithm, using the length can change the key. RSA is the first algorithm that can be used both for data encryption
Android security encryption feature article index Android Secure encryption: Symmetric encryption Android Secure encryption: Asymmetric encryption Android Secure encryption: Message digest Digest A
private key encryption) refers to encrypting and decrypting cryptographic algorithms that use the same key. Sometimes called a traditional cryptographic algorithm, the encryption key can be inferred from the decryption key, and the decryption key can also be inferred from the encryption key. In most symmetric algorithms, the
key, the confidentiality of the entire enterprise document cannot be discussed. Common symmetric encryption algorithms include DES, 3DES, Blowfish, IDEA, RC4, RC5, RC6, and AES. Asymmetric encryption Encryption algorithms that use different keys for encryption and decryptio
Preface I have written many articles about data migration and introduced many tools and features related to HDFS, suchDistcp, viewfilesystemAnd so on. But the theme I want to talk about today has moved to another field.Data securityData security has always been a key concern for users. Therefore, data managers must follow the following principles: The data is not lost or damaged, and the data content cannot be accessed illegally. The main aspect described in this article is the last point in the
encryption extension Library Mcrypt algorithm and encryption mode The Mcrypt library supports more than 20 encryption algorithms and 8 encryption modes. you can use the mcrypt_list_algorithms () and mcrypt_list_modes () functions to display them. The results are as follows: Mcrypt supports the following algorithms: ca
Mcrypt algorithm and encryption modeThe Mcrypt library supports more than 20 encryption algorithms and 8 encryption modes. you can use the mcrypt_list_algorithms () and mcrypt_list_modes () functions to display them. The results are as follows: Mcrypt supports the following algorithms:Cast-128 gost rijndael-128 twofish arcfour cast-256 loki97 rijndael-192 saferp
standard class library, mcrypt completed a lot of common encryption algorithms, such as DES, TripleDES, Blowfish (default), 3-WAY, SAFER-SK64, SAFER-SK128, TWOFISH, TEA, RC2 and GOST encryption algorithms, and provides four block encryption models: CBC, OFB, CFB, and ECB. 2. Installation and Use To use this extension,
PHP and Javades encryption and decryption instances, and des encryption and decryption. For PHP and Javades encryption and decryption instances, des encryption and decryption des encryption is a more popular encryption method for
This article describes in detail the phpblowfish encryption and decryption algorithm. if you are interested, refer to the encryption and decryption of the PHP Blowfish algorithm for your reference. the specific content is as follows: Pkcs5_pad ($ str, $ size); if (mcrypt_generic_init ($ cipher, $ this-> key, $ this-> iv )! =-1) {$ cipherText = mcrypt_generic (
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