Contents

# ronin-decrypt 1 "2023-02-01" Ronin "User Manuals"

## SYNOPSIS

`ronin decrypt` [*options*] [*FILE* ...]

## DESCRIPTION

Encrypts data.

## ARGUMENTS

*FILE*
  The optional file to read and decrypt. If no *FILE* arguments are given,
  input will be read from `stdin`.

## OPTIONS

`-k`, `--key` *STRING*
  The raw key string for the cipher.

`-K`, `--key-file` *FILE*
  Reads the key string from the file.

`-c`, `--cipher` *NAME*
  The cipher to decrypt with. See `--list-ciphers` for a list of supported
  ciphers. Default to `aes-256-cbc` if not given.

`-P`, `--password` *PASSWORD*
  The password to decrypt with.

`-H`, `--hash` `md5`\|`sha1`\|`sha256`\|`sha512`
  The hash algorithm to use for the password. Default to `sha256` if not given.

`--iv` *STRING*
  Sets the Initial Vector (IV) value of the cipher.

`--padding` *NUM*
  Sets the padding size, in bytes, of the decryption cipher.

`-b`, `--block-size` *NUM*
  The size, in bytes, to read data in. Default to `16384` if not given.

`--list-ciphers`
  List the supported ciphers and exits.

`-h`, `--help`
  Print help information.

## EXAMPLES

Decrypt a file using AES-256 (CBC mode) with a password:

        $ ronin decrypt --cipher aes-256-cbc --password "..." encrypted.bin

Decrypt a file using a raw key string:

        $ ronin decrypt --cipher aes-256-cbc --key "12345abcdef..." encrypted.bin

Decrypt a file using a raw key read from a file:

        $ ronin decrypt --cipher aes-256-cbc --key-file key.bin encrypted.bin

Specifying a custom IV (initialization vector):

        $ ronin decrypt --cipher aes-256-cbc --key "..." --iv "..." encrypted.bin

## AUTHOR

Postmodern <[e-mail]>

## SEE ALSO

ronin-encrypt(1)

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
ronin-2.0.5	man/ronin-decrypt.1.md
ronin-2.0.4	man/ronin-decrypt.1.md
ronin-2.0.3	man/ronin-decrypt.1.md
ronin-2.0.2	man/ronin-decrypt.1.md