verisign digital signature

MIDP 2.0 security mechanism and MIDlet Digital SignatureThis document is translated by wotrust according to the technical documentation MIDP 2.0: tutorial on signed midlets provided by Forum Nokia, please refer to this original English document: http://www.wotrust.com/support/resou...ts_v1_1_en.pdf at the same time. Please read this document before writing the MIDlet and signature MIDlet, so that you can ha

Information Digest, digital signatureAccording to the article, the asymmetric key algorithm is:http://blog.csdn.net/u014419512/article/details/26290821Now we are able to continue our scene:If one day. Alice received a copy of the signature Bob the file. Alice wished to confirm that the document must have come from Bob, and Alice wished to be sure. The document was not tampered with in the course of its tra

Turn from: HTTPS Unidirectional authentication Instructions _ digital certificate, digital signature, SSL (TLS), SASLBecause TLS + SASL is used in the project to do the security authentication layer. So read some online information, here to do a summary.1. First recommend several articles:Digital certificate: http://www.cnblogs.com/hyddd/archive/2009/01/07/137129

and decryption speed is slow. The representation algorithm includes: RSA, ElGamal, Elliptic Curve Series algorithm. Generally applicable to the signature scene or key negotiation, not suitable for large amounts of data encryption and decryption. Combination mechanism The first is to negotiate a temporary symmetric encryption key (session key) with asymmetric encryption with high computational complexity, and then encrypt and decrypt the large amount

 Original (English): http://www.youdzone.com/signature.html This article (Chinese, translated) is reproduced in: http://www.ruanyifeng.com/blog/2011/08/what_is_a_digital_signature.html 1. Bob has two keys, one is the public key, the other is the private key. 2. Bob gave his public key to his friends----patty, Doug, Susan----each one. 3. Susan is going to write a confidential letter to Bob. When she finished, she used Bob's public key to encrypt it, and it was a secret effect. 4. When Bob

of root certificates. The root certificate used to sign the MIDlet signature certificate must be included in these root certificates, different signature certificates are automatically assigned to the protected domain to which the root certificate belongs. The relationship between the root certificate and the protected domain is: a protected domain can have multiple root certificates, A root certificate ca

the data must be decrypted with another key.) ), get a summary of the text, and then use the same hash algorithm as the sender to calculate the digest value, and then compare with the decrypted summary, found that the two are exactly the same, the text has not been tampered with.In fact, the two concepts of encryption, decryption and digital signature are introduced, and the process of implementation is ex

Encryption and decryption use the same key algorithm, called symmetric encryption algorithm. encryption and decryption use different keys, called asymmetric encryption algorithms. The public key system is an asymmetric encryption algorithm. For symmetric encryption, symmetric keys must be protected. For public key algorithms, private keys must be protected.Public key encryption algorithms and derived digital signatures and

Public key* @param data encryption* @param key key* @return* @throws Exception*/public static byte[] Decryptbypublickey (byte[] data,string key) throws exception{Decrypt the private keybyte[] keybytes = decryptBASE64 (key);X509encodedkeyspec X509encodedkeyspec = new X509encodedkeyspec (keybytes);Keyfactory keyfactory = keyfactory.getinstance (key_algorthm);Key PublicKey = Keyfactory.generatepublic (X509encodedkeyspec);Decryption of dataCipher Cipher = cipher.getinstance (Keyfactory.getalgorithm

Reference to this blog: Introduction to RSA encryption algorithm basic knowledge of digital signature 1. Digital signatures and data encryption are required to use the RSA and other asymmetric encryption algorithm Where the digital signature is the sender with the priv

Paperless Signature Overview In this chapter, we will study digital signatures, which are the first level to determine the identity of the contact who exchanges messages. We will use code samples to describe the two methods used to identify the message source (one is more difficult and the other is easier ). We will also list the digital

I. Overview 1, the digital Signature algorithm can be regarded as a message digest algorithm with a key, and this key includes the public and private keys. He's a combination of asymmetric encryption algorithms and message digest algorithms. 2, the digital Signature algorithm is the public Key Infrastructure (PKI), as

specifies the Certificate Name of the topic. This name must comply with X.500 standards. The simplest way is to specify this name in double quotes with the prefix CN =; for example, "CN = myName ". Note that CN must be capitalized. -Sk specifies the location of the key container of the topic, which contains the private key. If the key container does not exist, the system creates one. Enter makecert -? You can view the usage of other parameters. Step 4: Create a issuer certificate (SPC ). Note

In an Android system, all applications installed to the system must have a digital certificate that identifies the author of the application and establishes a trust relationship between the applications, if a permission ProtectionLevel is signature, Then only applications that have the same digital certificate as the program where the permission resides can get t

1. What is a digital signature? A digital signature is a sign of your program as your own, and when someone sees the signature, they know it's relevant to you .2. Why digital signatures? The simplest and most straightforward answe

CA certificates are widely used in digital signatures, and because Windows supports RSA algorithms well, many third-party applications under the Windows platform support the application of cryptography for RSA algorithm certificates. Recently, the opportunity to take advantage of project summary, especially in Windows under the common CA Certificate digital signature