pki digital certificates

+zuacrphv6qo7n6etvbz+xhvcpeieps+slLwkydnljuf6nx1ptr+0teqchonttalxu5r6+byahdcvtzbl1b20jtg6fqsgtyx3t6j/sdjzlkrumw/lqw5hwwrmoqht0widaqab-----END publickey-----Set permissions directly with Umask, be sure to add (). Umask is executed against the shell and is not valid for the current. Otherwise the operation will be 600. [[emailprotected]~]# (umask077;opensslgenrsa-out/root/ mykey2.pri2048) Generatingrsaprivatekey,2048bitlongmodulus ...................................+++.............................

encryptionSymmetric key encryption is also called private key encryption, that is, both the sending and receiving data must use the same key to encrypt and decrypt the plaintext.3. Digital certificates and CA3.1. Confirm the authenticity of the hostServer with HTTPS (server) must request a digital certificate (or CA certificate) from the CA (certificateauthority

OrderRecent work has been around the digital certificate, the understanding of CA certificate is a little bit, but not so deep, now to use this aspect of things, obviously still a little lacking, then from this beginning, I will my own study, work history with everyone to share, I hope to understand the CA The certificate of the children's shoes is helpful.Obviously, this article is mostly a theoretical introduction, followed by a number of relevant e

Android secure encryption feature article index Android Secure encryption: Symmetric encryption Android Secure encryption: Asymmetric encryption Android Secure encryption: Message digest msg Digest Android Secure encryption: Digital signatures and digital certificates Android Secure encryption: HTTPS programming All of the above lear

Http://blog.chinaunix.net/uid-26575352-id-3073802.html Common certificate formats and mutual conversionsThe PKCS full name is Public-key cryptography standards, a set of standards developed by RSA Labs and other security system developers to facilitate the development of public key cryptography, which currently has a total of 15 standards. Commonly used are:Pkcs#7 Cryptographic Message Syntax StandardPKCS#10 Certification Request Standardpkcs#12 Personal Information Exchange Syntax Standard is

OrderThe previous article introduced several concepts related to CA certificates, which are important to understand the digital certificate and how it works. This article is mainly to analyze the CA certificate, to tell the basic composition of the certificate, which is necessary to generate a correct, accessible certificate.ConstituteNonsense not much to say, directly on the content.Let's look at what the

signature algorithm is Sha1withrsa, the most commonly used message digest algorithm is SHA1.In addition to RSA, you can also use the DSA algorithm. Only using the DSA algorithm cannot complete the cryptographic decryption implementation, that is, such a certificate does not include encryption and decryption capabilities.Digital certificates have several file encoding formats, including CER encoding, DER Encoding, and so on.CER (Canonical Encoding Rul

, do the following:A) Use your own private key to decrypt the information to remove the password, use the password to decrypt the browser's handshake message, and verify that the hash is consistent with the browser.b) Encrypt a handshake message with a password and send it to the browser.5. The browser decrypts and calculates the hash of the handshake message, if it is consistent with the hash of the server, at which point the handshake process ends, and all the communication data will be encryp

user who is requesting authentication.Role: Verify that the publisher of the public key that the user obtains is trustworthyProcess:1, the applicant carries the material to the certification body to apply for a digital certificate (that is, the certification body to sign its public key);2, the Certification Body audit, after the approval, the use of the private key to the applicant's public key signature, the applicant obtains the

OrderThe previous article talked about Java generating digital certificates, using third-party component BC. This article also introduces the generation of digital certificates, but unlike the previous one, this article uses the KeyStore storage method, the exported certificate file format is PFX, this format of the ce

Formats and differences of digital certificates Certificates that exist as files are generally in the following formats: 　　1.Certificate with Private Key It is defined by the public key cryptography standards #12 and PKCS #12 standards. It contains the certificate format in binary format of the public key and private key, and uses pfx as the suffix of the Certifi

also set to 2048-bit, according to your own needs to choose. However, it is important to note that the use of the public (PrivateWhen the key is encrypted, the length of the string that needs to be encrypted is required, in terms of 1024-bit key length, the length of the string that needs to be encrypted cannot exceed 117 characters, and the formula is calculated as: 1024/8-11 = 117. Therefore, in the encryption of long strings, you need to use the method of Shard encryption, this need to note,

Keytool.exe in Java can be used to create digital certificates, where all digital certificates are stored in a certificate library in a single piece (in the form of aliases), and a certificate in the certificate store contains information about the private key of the certificate, the public key, and the corresponding

Encryption and digital certificates Encryption and digital certificates Concept Digital summary Key encryption Technology Private key (symmetric encryption) Public key (Asymmetric encryption)

the "server" sent over the public key, after some kind of check, if you can find that the public key is not "server" is good (this is the key)Solution:Introduction of digital certificates:A digital certificate contains the following:1. Issuing authority for certificates2. Validity of the certificate3. Public key4. Certificate owner (Subject)5. Algorithms used for signing6. Fingerprint and fingerprint algor

addition to the encryption mechanism. The certificate ensures that a site is indeed a site.With the certificate, when your browser accesses an HTTPS website, it verifies the CA certificate on that site (similar to the official seal of the Certification Letter of introduction). If the browser discovers that the certificate is not a problem (the certificate is trusted by a root certificate, the domain name bound on the certificate is consistent with the domain name of the website, the certificate

information. A digital certificate is issued by an authoritative authority that becomes a certification authority (CA). Since the digital certificate is issued by a certificate authority, the Authority guarantees the validity of the certificate information. In addition, digital certificates are only valid for a specif

Summary : In this article, I use a detailed language and a large number of pictures and complete program source to show you how in Java in the implementation of message digest, message authentication code to achieve secure communication, and the use of Java tools to generate digital certificates, and use the program to sign digital

Digital signature is an application of digital certificates. At present, the most important application in China is the application of electronic signatures. There are two types: electronic seals and electronic signatures.Digital signature: 1. Hard to deny 2. confirm that the file is true. Digital signature is an en

Java and digital certificates Java and digital certificates Issuance and application of certificates The content and meaning of the certificate Other A certificate (Certificate, also known as Public-key Certificate) is a