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OpenDarwin 7.2.1 - man page for openssl (opendarwin section 1)

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OPENSSL(1)				     OpenSSL				       OPENSSL(1)

NAME
       openssl - OpenSSL command line tool

SYNOPSIS
       openssl command [ command_opts ] [ command_args ]

       openssl [ list-standard-commands | list-message-digest-commands | list-cipher-commands ]

       openssl no-XXX [ arbitrary options ]

DESCRIPTION
       OpenSSL is a cryptography toolkit implementing the Secure Sockets Layer (SSL v2/v3) and
       Transport Layer Security (TLS v1) network protocols and related cryptography standards
       required by them.

       The openssl program is a command line tool for using the various cryptography functions of
       OpenSSL's crypto library from the shell.  It can be used for

	o  Creation of RSA, DH and DSA key parameters
	o  Creation of X.509 certificates, CSRs and CRLs
	o  Calculation of Message Digests
	o  Encryption and Decryption with Ciphers
	o  SSL/TLS Client and Server Tests
	o  Handling of S/MIME signed or encrypted mail

COMMAND SUMMARY
       The openssl program provides a rich variety of commands (command in the SYNOPSIS above),
       each of which often has a wealth of options and arguments (command_opts and command_args
       in the SYNOPSIS).

       The pseudo-commands list-standard-commands, list-message-digest-commands, and list-cipher-
       commands output a list (one entry per line) of the names of all standard commands, message
       digest commands, or cipher commands, respectively, that are available in the present
       openssl utility.

       The pseudo-command no-XXX tests whether a command of the specified name is available.  If
       no command named XXX exists, it returns 0 (success) and prints no-XXX; otherwise it
       returns 1 and prints XXX.  In both cases, the output goes to stdout and nothing is printed
       to stderr.  Additional command line arguments are always ignored.  Since for each cipher
       there is a command of the same name, this provides an easy way for shell scripts to test
       for the availability of ciphers in the openssl program.	(no-XXX is not able to detect
       pseudo-commands such as quit, list-...-commands, or no-XXX itself.)

       STANDARD COMMANDS

       asn1parse Parse an ASN.1 sequence.

       ca	 Certificate Authority (CA) Management.

       ciphers	 Cipher Suite Description Determination.

       crl	 Certificate Revocation List (CRL) Management.

       crl2pkcs7 CRL to PKCS#7 Conversion.

       dgst	 Message Digest Calculation.

       dh	 Diffie-Hellman Parameter Management.  Obsoleted by dhparam.

       dsa	 DSA Data Management.

       dsaparam  DSA Parameter Generation.

       enc	 Encoding with Ciphers.

       errstr	 Error Number to Error String Conversion.

       dhparam	 Generation and Management of Diffie-Hellman Parameters.

       gendh	 Generation of Diffie-Hellman Parameters.  Obsoleted by dhparam.

       gendsa	 Generation of DSA Parameters.

       genrsa	 Generation of RSA Parameters.

       ocsp	 Online Certificate Status Protocol utility.

       passwd	 Generation of hashed passwords.

       pkcs12	 PKCS#12 Data Management.

       pkcs7	 PKCS#7 Data Management.

       rand	 Generate pseudo-random bytes.

       req	 X.509 Certificate Signing Request (CSR) Management.

       rsa	 RSA Data Management.

       rsautl	 RSA utility for signing, verification, encryption, and decryption.

       s_client  This implements a generic SSL/TLS client which can establish a transparent con-
		 nection to a remote server speaking SSL/TLS. It's intended for testing purposes
		 only and provides only rudimentary interface functionality but internally uses
		 mostly all functionality of the OpenSSL ssl library.

       s_server  This implements a generic SSL/TLS server which accepts connections from remote
		 clients speaking SSL/TLS. It's intended for testing purposes only and provides
		 only rudimentary interface functionality but internally uses mostly all func-
		 tionality of the OpenSSL ssl library.	It provides both an own command line ori-
		 ented protocol for testing SSL functions and a simple HTTP response facility to
		 emulate an SSL/TLS-aware webserver.

       s_time	 SSL Connection Timer.

       sess_id	 SSL Session Data Management.

       smime	 S/MIME mail processing.

       speed	 Algorithm Speed Measurement.

       verify	 X.509 Certificate Verification.

       version	 OpenSSL Version Information.

       x509	 X.509 Certificate Data Management.

       MESSAGE DIGEST COMMANDS

       md2	 MD2 Digest

       md5	 MD5 Digest

       mdc2	 MDC2 Digest

       rmd160	 RMD-160 Digest

       sha	 SHA Digest

       sha1	 SHA-1 Digest

       ENCODING AND CIPHER COMMANDS

       base64	 Base64 Encoding

       bf bf-cbc bf-cfb bf-ecb bf-ofb
		 Blowfish Cipher

       cast cast-cbc
		 CAST Cipher

       cast5-cbc cast5-cfb cast5-ecb cast5-ofb
		 CAST5 Cipher

       des des-cbc des-cfb des-ecb des-ede des-ede-cbc des-ede-cfb des-ede-ofb des-ofb
		 DES Cipher

       des3 desx des-ede3 des-ede3-cbc des-ede3-cfb des-ede3-ofb
		 Triple-DES Cipher

       idea idea-cbc idea-cfb idea-ecb idea-ofb
		 IDEA Cipher

       rc2 rc2-cbc rc2-cfb rc2-ecb rc2-ofb
		 RC2 Cipher

       rc4	 RC4 Cipher

       rc5 rc5-cbc rc5-cfb rc5-ecb rc5-ofb
		 RC5 Cipher

PASS PHRASE ARGUMENTS
       Several commands accept password arguments, typically using -passin and -passout for input
       and output passwords respectively. These allow the password to be obtained from a variety
       of sources. Both of these options take a single argument whose format is described below.
       If no password argument is given and a password is required then the user is prompted to
       enter one: this will typically be read from the current terminal with echoing turned off.

       pass:password
		 the actual password is password. Since the password is visible to utilities
		 (like 'ps' under Unix) this form should only be used where security is not
		 important.

       env:var	 obtain the password from the environment variable var. Since the environment of
		 other processes is visible on certain platforms (e.g. ps under certain Unix
		 OSes) this option should be used with caution.

       file:pathname
		 the first line of pathname is the password. If the same pathname argument is
		 supplied to -passin and -passout arguments then the first line will be used for
		 the input password and the next line for the output password. pathname need not
		 refer to a regular file: it could for example refer to a device or named pipe.

       fd:number read the password from the file descriptor number. This can be used to send the
		 data via a pipe for example.

       stdin	 read the password from standard input.

SEE ALSO
       asn1parse(1), ca(1), config(5), crl(1), crl2pkcs7(1), dgst(1), dhparam(1), dsa(1),
       dsaparam(1), enc(1), gendsa(1), genrsa(1), nseq(1), openssl(1), passwd(1), pkcs12(1),
       pkcs7(1), pkcs8(1), rand(1), req(1), rsa(1), rsautl(1), s_client(1), s_server(1),
       s_time(1), smime(1), spkac(1), verify(1), version(1), x509(1), crypto(3), ssl(3)

HISTORY
       The openssl(1) document appeared in OpenSSL 0.9.2.  The list-XXX-commands pseudo-commands
       were added in OpenSSL 0.9.3; the no-XXX pseudo-commands were added in OpenSSL 0.9.5a.  For
       notes on the availability of other commands, see their individual manual pages.

0.9.7d					    2004-05-17				       OPENSSL(1)
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