Command Line Utilities

When installed on your system openssl binary is entry point for many functions.

• launching openssl without any parameter will enter an interactive mode with an OpenSSL> prompt
  • to quit: quit
  • enter a command it will set a command context in which parameters depends on command.
• to known what commands and parameters you can issue for openssl do :
  • openssl help

openssl:Error: 'help' is an invalid command.

Standard commands
asn1parse         ca                ciphers           cms               
crl               crl2pkcs7         dgst              dh                
dhparam           dsa               dsaparam          ec                
ecparam           enc               engine            errstr            
gendh             gendsa            genpkey           genrsa            
nseq              ocsp              passwd            pkcs12            
pkcs7             pkcs8             pkey              pkeyparam         
pkeyutl           prime             rand              req               
rsa               rsautl            s_client          s_server          
s_time            sess_id           smime             speed             
spkac             srp               ts                verify            
version           x509              

Message Digest commands (see the `dgst' command for more details)
md4               md5               rmd160            sha               
sha1              

Cipher commands (see the `enc' command for more details)
aes-128-cbc       aes-128-ecb       aes-192-cbc       aes-192-ecb       
aes-256-cbc       aes-256-ecb       base64            bf                
bf-cbc            bf-cfb            bf-ecb            bf-ofb            
camellia-128-cbc  camellia-128-ecb  camellia-192-cbc  camellia-192-ecb  
camellia-256-cbc  camellia-256-ecb  cast              cast-cbc          
cast5-cbc         cast5-cfb         cast5-ecb         cast5-ofb         
des               des-cbc           des-cfb           des-ecb           
des-ede           des-ede-cbc       des-ede-cfb       des-ede-ofb       
des-ede3          des-ede3-cbc      des-ede3-cfb      des-ede3-ofb      
des-ofb           des3              desx              rc2               
rc2-40-cbc        rc2-64-cbc        rc2-cbc           rc2-cfb           
rc2-ecb           rc2-ofb           rc4               rc4-40            
seed              seed-cbc          seed-cfb          seed-ecb          
seed-ofb          zlib              

commands

Get information about your openssl toolkit

version

OpenSSL> version OpenSSL 1.0.1e 11 Feb 2013

ciphers

returns SSL/TLS ciphers supported.

OpenSSL> ciphers ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:SRP-DSS-AES-256-CBC-SHA:SRP-RSA-AES-256-CBC-SHA:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-CAMELLIA256-SHA:DHE-DSS-CAMELLIA256-SHA:ECDH-RSA-AES256-GCM-SHA384:ECDH-ECDSA-AES256-GCM-SHA384:ECDH-RSA-AES256-SHA384:ECDH-ECDSA-AES256-SHA384:ECDH-RSA-AES256-SHA:ECDH-ECDSA-AES256-SHA:AES256-GCM-SHA384:AES256-SHA256:AES256-SHA:CAMELLIA256-SHA:PSK-AES256-CBC-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:SRP-DSS-3DES-EDE-CBC-SHA:SRP-RSA-3DES-EDE-CBC-SHA:EDH-RSA-DES-CBC3-SHA:EDH-DSS-DES-CBC3-SHA:ECDH-RSA-DES-CBC3-SHA:ECDH-ECDSA-DES-CBC3-SHA:DES-CBC3-SHA:PSK-3DES-EDE-CBC-SHA:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:SRP-DSS-AES-128-CBC-SHA:SRP-RSA-AES-128-CBC-SHA:DHE-DSS-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES128-SHA256:DHE-DSS-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA:DHE-RSA-SEED-SHA:DHE-DSS-SEED-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-DSS-CAMELLIA128-SHA:ECDH-RSA-AES128-GCM-SHA256:ECDH-ECDSA-AES128-GCM-SHA256:ECDH-RSA-AES128-SHA256:ECDH-ECDSA-AES128-SHA256:ECDH-RSA-AES128-SHA:ECDH-ECDSA-AES128-SHA:AES128-GCM-SHA256:AES128-SHA256:AES128-SHA:SEED-SHA:CAMELLIA128-SHA:PSK-AES128-CBC-SHA:ECDHE-RSA-RC4-SHA:ECDHE-ECDSA-RC4-SHA:ECDH-RSA-RC4-SHA:ECDH-ECDSA-RC4-SHA:RC4-SHA:RC4-MD5:PSK-RC4-SHA:EDH-RSA-DES-CBC-SHA:EDH-DSS-DES-CBC-SHA:DES-CBC-SHA:EXP-EDH-RSA-DES-CBC-SHA:EXP-EDH-DSS-DES-CBC-SHA:EXP-DES-CBC-SHA:EXP-RC2-CBC-MD5:EXP-RC4-MD5

engine

OpenSSL> engine (rsax) RSAX engine support (dynamic) Dynamic engine loading support

speed

returns informations of toolkit performance on cryptographic functions computations.

( Ex: on Linux 3.1.0-1-amd64 #1 SMP x86_64 GNU/Linux, HP dv7 i7 4Gb )

Doing md4 for 3s on 16 size blocks: 12430613 md4's in 3.00s
...
Doing md5 for 3s on 16 size blocks: 8943943 md5's in 2.99s
Doing md5 for 3s on 64 size blocks: 6560162 md5's in 3.00s
Doing md5 for 3s on 256 size blocks: 3674563 md5's in 3.00s
Doing md5 for 3s on 1024 size blocks: 1325803 md5's in 3.00s
Doing md5 for 3s on 8192 size blocks: 190271 md5's in 3.00s
Doing hmac(md5) for 3s on 16 size blocks: 7289025 hmac(md5)'s in 3.00s
Doing hmac(md5) for 3s on 64 size blocks: 5519732 hmac(md5)'s in 3.00s
Doing hmac(md5) for 3s on 256 size blocks: 3319123 hmac(md5)'s in 3.00s
Doing hmac(md5) for 3s on 1024 size blocks: 1275475 hmac(md5)'s in 3.00s
Doing hmac(md5) for 3s on 8192 size blocks: 187134 hmac(md5)'s in 3.00s
Doing sha1 for 3s on 16 size blocks: 10089842 sha1's in 2.99s
Doing sha1 for 3s on 64 size blocks: 7033355 sha1's in 3.00s
Doing sha1 for 3s on 256 size blocks: 3919372 sha1's in 3.00s
Doing sha1 for 3s on 1024 size blocks: 1374314 sha1's in 3.00s
Doing sha1 for 3s on 8192 size blocks: 198808 sha1's in 3.00s
Doing sha256 for 3s on 16 size blocks: 6462822 sha256's in 3.00s
Doing sha256 for 3s on 64 size blocks: 3504641 sha256's in 3.00s
Doing sha256 for 3s on 256 size blocks: 1486771 sha256's in 3.00s
Doing sha256 for 3s on 1024 size blocks: 440613 sha256's in 3.00s
Doing sha256 for 3s on 8192 size blocks: 58418 sha256's in 3.00s
Doing sha512 for 3s on 16 size blocks: 5040453 sha512's in 2.99s
Doing sha512 for 3s on 64 size blocks: 5089425 sha512's in 3.00s
Doing sha512 for 3s on 256 size blocks: 1865240 sha512's in 3.00s
Doing sha512 for 3s on 1024 size blocks: 643708 sha512's in 3.00s
Doing sha512 for 3s on 8192 size blocks: 90615 sha512's in 3.00s
...
Doing whirlpool for 3s on 8192 size blocks: 33204 whirlpool's in 3.00s
...
Doing rmd160 for 3s on 8192 size blocks: 66719 rmd160's in 3.00s
...
Doing rc4 for 3s on 8192 size blocks: 238972 rc4's in 3.00s
...
Doing des cbc for 3s on 8192 size blocks: 19837 des cbc's in 3.00s
...
Doing des ede3 for 3s on 8192 size blocks: 7706 des ede3's in 3.00s
...
Doing aes-128 cbc for 3s on 8192 size blocks: 35217 aes-128 cbc's in 3.00s
...
Doing aes-192 cbc for 3s on 8192 size blocks: 29225 aes-192 cbc's in 3.01s
...
Doing aes-256 cbc for 3s on 8192 size blocks: 24414 aes-256 cbc's in 3.00s
...
Doing aes-256 ige for 3s on 8192 size blocks: 23331 aes-256 ige's in 2.99s
...