But in general, more primes lead to less generation time of a key. A newline means that the number has passed all the prime tests (the actual number depends on the key size).īecause key generation is a random process the time taken to generate a key may vary somewhat. represents each number which has passed an initial sieve test, + means a number has passed a single round of the Miller-Rabin primality test, * means the current prime starts a regenerating progress due to some failed tests. When generating a private key various symbols will be output to indicate the progress of the generation. RSA private key generation essentially involves the generation of two or more prime numbers. The default is 2048 and values less than 512 are not allowed. The size of the private key to generate in bits. See "Provider Options" in openssl(1), provider(7), and property(7). provider name -provider-path path -propquery propq ![]() See "Random State Options" in openssl(1) for details. Write the key using the traditional PKCS#1 format instead of the PKCS#8 format. Print fewer details about the operations being performed, which may be handy during batch scripts and pipelines. Print extra details about the operations being performed. If num is greater than 2, then the generated key is called a 'multi-prime' RSA key, which is defined in RFC 8017. The num parameter must be a positive integer that is greater than 1 and less than 16. Specify the number of primes to use while generating the RSA key. The public exponent to use, either 65537 or 3. If encryption is used a pass phrase is prompted for if it is not supplied via the -passout argument. If none of these options is specified no encryption is used. These options encrypt the private key with specified cipher before outputting it. ![]() For more information about the format see openssl-passphrase-options(1). If this argument is not specified then standard output is used. ![]() This command generates an RSA private key. The openssl-genpkey(1) command should be used instead. IMPORTANT: The key pair below is provided for testing only.Openssl-genrsa - generate an RSA private key SYNOPSIS This may help if you just want a real-simple private/public key pair: Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search
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