$ openssl help enc
Usage: enc [options]
General options:
-help Display this summary
-list List ciphers
-ciphers Alias for -list
-e Encrypt
-d Decrypt
-p Print the iv/key
-P Print the iv/key and exit
-engine val Use engine, possibly a hardware device
Input options:
-in infile Input file
-k val Passphrase
-kfile infile Read passphrase from file
Output options:
-out outfile Output file
-pass val Passphrase source
-v Verbose output
-a Base64 encode/decode, depending on encryption flag
-base64 Same as option -a
-A Used with -[base64|a] to specify base64 buffer as a single line
Encryption options:
-nopad Disable standard block padding
-salt Use salt in the KDF (default)
-nosalt Do not use salt in the KDF
-debug Print debug info
-bufsize val Buffer size
-K val Raw key, in hex
-S val Salt, in hex
-iv val IV in hex
-md val Use specified digest to create a key from the passphrase
-iter +int Specify the iteration count and force the use of PBKDF2
Default: 10000
-pbkdf2 Use password-based key derivation function 2 (PBKDF2)
Use -iter to change the iteration count from 10000
-none Don't encrypt
-* Any supported cipher
Random state options:
-rand val Load the given file(s) into the random number generator
-writerand outfile Write random data to the specified file
Provider options:
-provider-path val Provider load path (must be before 'provider' argument if required)
-provider val Provider to load (can be specified multiple times)
-propquery val Property query used when fetching algorithms
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