Difference between revisions of "OpenSSL/Cheatsheet"

Latest revision as of 08:27, 4 October 2015

Command line shortcuts

Type	Action	Command	Comment
Help	List	`openssl list-standard-commands`
Base64	Encode	`openssl base64 -in <INPUT>.txt -out <OUTPUT>.b64`
Base64	Decode	`openssl base64 -d -in <File>.b64 -out <File>.txt`
MD5	Checksum	`openssl md5 <File>`	Same as `md5sum <File>`
SHA1	Checksum	`openssl sha1 <File>`	Same as `sha1sum <File>`
SHA224	Checksum	`openssl sha224 <File>`	Same as `sha224sum <File>`
SHA256	Checksum	`openssl sha256 <File>`	Same as `sha256sum <File>`
SHA384	Checksum	`openssl sha384 <File>`	Same as `sha384sum <File>`
SHA512	Checksum	`openssl sha512 <File>`	Same as `sha512sum <File>`
Password	Encrypt	`openssl passwd <Password>`	Creates a crypt-ed password for use with `/etc/shadow` [1]
Password	Encrypt	`openssl passwd -1 <Password>`	Creates a md5 password for use with `/etc/shadow` [1]

Notes

Newer versions of Debian use the sha-512 there is a tool called mkpasswd that will create compatible passwords.

File encryption

Encrypt

openssl enc -aes-256-cbc -in <File> -out <File>.aes
enter aes-256-cbc encryption password:
Verifying - enter aes-256-cbc encryption password:

Encrypt with password from file

openssl enc -aes-256-cbc -pass file:<PwFile>> -in <File> -out <File>.aes

Decrypt

openssl enc -d -aes-256-cbc -in <File>.aes -out <File> 
enter aes-256-cbc decryption password:

Decrypt with password from file

openssl enc -d -aes-256-cbc -pass file:<PwFile> -in <File>.aes -out <File>

@@ Line 1: / Line 1: @@
 == Command line shortcuts ==
-=== Base64 ===
-Encode
- openssl base64 < file.b64 > file.txt
+{| class="wikitable sortable collapsible"
-Decode
+|-
- openssl base64 -d < file.txt > file.b64
+! Type    !! Action !! Command !! Comment
+|-
+| Help  || List || <tt>openssl list-standard-commands</tt> ||
+|-
+| Base64  || Encode || <tt>openssl base64 -in <span class="input"><INPUT>.txt</span> -out <span class="input"><OUTPUT>.b64</span></tt> ||
+|-
+| Base64  || Decode || <tt>openssl base64 -d -in <span class="input"><File>.b64</span> -out <span class="input"><File>.txt</span></tt> ||
+|-
+| MD5     || Checksum || <tt>openssl md5 <span class="input"><File></span> </tt> || Same as <tt>md5sum <span class="input"><File></span></tt>
+|-
+| SHA1     || Checksum || <tt>openssl sha1 <span class="input"><File></span> </tt> || Same as <tt>sha1sum <span class="input"><File></span></tt>
+|-
+| SHA224     || Checksum || <tt>openssl sha224 <span class="input"><File></span> </tt> || Same as <tt>sha224sum <span class="input"><File></span></tt>
+|-
+| SHA256     || Checksum || <tt>openssl sha256 <span class="input"><File></span> </tt> || Same as <tt>sha256sum <span class="input"><File></span></tt>
+|-
+| SHA384     || Checksum || <tt>openssl sha384 <span class="input"><File></span> </tt> || Same as <tt>sha384sum <span class="input"><File></span></tt>
+|-
+| SHA512     || Checksum || <tt>openssl sha512 <span class="input"><File></span> </tt> || Same as <tt>sha512sum <span class="input"><File></span></tt>
+|-
+| Password || Encrypt || <tt>openssl passwd <span class="input"><Password></span> </tt> || Creates a crypt-ed password for use with <tt>/etc/shadow</tt> [1]
+|-
+| Password || Encrypt || <tt>openssl passwd -1 <span class="input"><Password></span> </tt> || Creates a md5 password for use with <tt>/etc/shadow</tt> [1]
+|-
+|}
-=== MD5 ===
+=== Notes ===
+# Newer versions of Debian use the sha-512 there is a tool called <tt>mkpasswd</tt> that will create compatible passwords.
-Checksum a file
- openssl md5 file
-=== SHA1 ===
-Checksum a file
- openssl sha1 file
-=== Generate Passwords ===
-Crypt
- openssl passwd <password>
-MD5 (for /etc/passwd and /etc/shadow)
- openssl passwd -1
 === File encryption ===
 Encrypt
- openssl enc -aes-256-cbc < file > file.aes
+ openssl enc -aes-256-cbc -in <span class="input"><File></span> -out <span class="input"><File></span>.aes
  enter aes-256-cbc encryption password:
  Verifying - enter aes-256-cbc encryption password:
+Encrypt with password from file
+ openssl enc -aes-256-cbc -pass file:<span class="input"><PwFile></span>> -in <span class="input"><File></span> -out <span class="input"><File></span>.aes
 Decrypt
- openssl enc -d -aes-256-cbc -in file.aes > file
+ openssl enc -d -aes-256-cbc -in <span class="input"><File></span>.aes -out <span class="input"><File></span>
  enter aes-256-cbc decryption password:
+Decrypt with password from file
+ openssl enc -d -aes-256-cbc -pass file:<span class="input"><PwFile></span> -in <span class="input"><File></span>.aes -out <span class="input"><File></span>
 [[Category:OpenSSL]]

Difference between revisions of "OpenSSL/Cheatsheet"

Latest revision as of 08:27, 4 October 2015

Command line shortcuts

Notes

File encryption

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