class OpenSSL::Cipher
Overview
A class which can be used to encrypt and decrypt data using a specified cipher.
require "random/secure" key = Random::Secure.random_bytes(64) # You can also use OpenSSL::Cipher#random_key to do this same thing iv = Random::Secure.random_bytes(32) # You can also use OpenSSL::Cipher#random_iv to do this same thing def encrypt(data) cipher = OpenSSL::Cipher.new("aes-256-cbc") cipher.encrypt cipher.key = key cipher.iv = iv io = IO::Memory.new io.write(cipher.update(data)) io.write(cipher.final) io.rewind io.to_slice end def decrypt(data) cipher = OpenSSL::Cipher.new("aes-256-cbc") cipher.decrypt cipher.key = key cipher.iv = iv io = IO::Memory.new io.write(cipher.update(data)) io.write(cipher.final) io.rewind io.gets_to_end end
Defined in:
openssl/cipher.crConstructors
Instance Method Summary
- #authenticated? : Bool
- #block_size : Int32
- #decrypt : Nil
Sets this cipher to decryption mode.
- #encrypt : Nil
Sets this cipher to encryption mode.
- #final : Bytes
Outputs the decrypted or encrypted buffer.
- #finalize
- #iv=(iv)
- #iv_len : Int32
How many bytes the iv should be.
- #key=(key)
- #key_len : Int32
How many bytes the key should be.
- #name : String
- #padding=(pad : Bool)
- #random_iv
Sets the iv using
Random::Secure
. - #random_key
Sets the key using
Random::Secure
. - #reset
Resets the encrypt/decrypt mode.
- #update(data)
Add the data to be encrypted or decrypted to this cipher's buffer.
Instance methods inherited from class Reference
==(other : self)==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup, hash(hasher) hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference) : Bool
same?(other : Nil) same?, to_s(io : IO) : Nil to_s
Constructor methods inherited from class Reference
new new Instance methods inherited from class Object
! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(collection : Object) : Bool
in?(*values : Object) : Bool in?, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO) : Nil
to_json : String to_json, to_pretty_json(indent : String = " ") : String
to_pretty_json(io : IO, indent : String = " ") : Nil to_pretty_json, to_s(io : IO) : Nil
to_s : String to_s, to_yaml(io : IO) : Nil
to_yaml : String to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as
Class methods inherited from class Object
from_json(string_or_io, root : String)from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml
Constructor Detail
def self.new(name)Source
Instance Method Detail
def finalizeSource
def iv=(iv)Source
def key=(key)Source
def random_ivSource
Sets the iv using Random::Secure
.
def random_keySource
Sets the key using Random::Secure
.
def resetSource
Resets the encrypt/decrypt mode.
def update(data)Source
Add the data to be encrypted or decrypted to this cipher's buffer.
© 2012–2021 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/1.2.1/OpenSSL/Cipher.html