1. Summary of information and digital signatureInformation Summary: Processing the data to obtain a fixed length of the results, its characteristics input:1, the output length is fixed. That is, the output length is independent of the input length.2,
OpenSSL is an open source SSL implementation. The simplest and most important application based on the OpenSSL directive is to use Req, CAs, and X509 to issue a certificate.OpenSSL provides command-line options and interactive two ways to perform
Let's introduce the next three encryption methods:
Symmetric encryption
Public Key Cryptography
One-way encryption
Symmetric encryptionImplementation Tool OpenSSL ENC introduction[[email protected] sh]# man encenc -
About OpenSSL
SSL is an abbreviation for the Secure Socket Layer protocol, which provides covert transmission over the Internet. Netscape Company introduced the SSL protocol standard at the same time as the first web browser, there are
Preface openSSL is a powerful encryption tool. many of us are already using openSSL to create RSA private key or certificate signature requests. However, you can use openSSL to test the computer. speed? You can also use it to encrypt files or
Openssl uses the DSA algorithm to generate a signature instance. This article introduces how to use the DSA algorithm to generate a signature instance based on openssl. the method for generating a signature is simple. it is complicated to understand
After installation, the OpenSSL package will generate three important pieces of content: the encryption librarySSL Related library filesOpenSSL command-line toolsHere's a look at the use of the OpenSSL command-line tool:OpenSSL, like Yum, has dozens
Rsautl is a tool for RSA, a subset of the features of RSA and dgst that can be used to generate digital signatures, verify digital signatures, encrypt and decrypt files .Pkeyutl is a generic tool for asymmetric encryption, which is roughly the same
Command:
openssl> dgst-dss1-sign c.pri-out Signature.bin s.txt
ExplainC.pri is the private key file generated by the DSA algorithmS.txt is the original of the signature.Signature.bin is the generated signature file
PHP can use the following
Command:
openssl> dgst-dss1-sign c.pri-out Signature.bin s.txt
Explain
C.pri is the private key file generated by the DSA algorithm
S.txt is the original of the signature.
Signature.bin is the generated signature file
PHP can use the following
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