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class Digest::MD5

Overview

Implements the MD5 digest algorithm.

Warning: MD5 is no longer a cryptographically secure hash, and should not be used in security-related components, like password hashing. For passwords, see Crypto::Bcrypt::Password. For a generic cryptographic hash, use SHA-256 via OpenSSL::Digest.new("SHA256").

Defined in:

digest/md5.cr

Constant Summary

S11 = 7
S12 = 12
S13 = 17
S14 = 22
S21 = 5
S22 = 9
S23 = 14
S24 = 20
S31 = 4
S32 = 11
S33 = 16
S34 = 23
S41 = 6
S42 = 10
S43 = 15
S44 = 21

Constructors

Class Method Summary

Instance Method Summary

Instance methods inherited from class Digest::Base

digest : Bytes digest, digest_size : Int32 digest_size, final(dst : Bytes) : Bytes
final : Bytes final, final_impl(dst : Bytes) : Nil final_impl, hexdigest : String hexdigest, reset : self reset, reset_impl : Nil reset_impl, update(data : Bytes) : self
update(data) : self update, update_impl(data : Bytes) : Nil update_impl

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)
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?(*values : Object) : Bool
in?(collection) : Bool in?, inspect : String
inspect(io : IO) : Nil 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)
to_json to_json, to_pretty_json(io : IO, indent : String = " ")
to_pretty_json(indent : String = " ") to_pretty_json, to_s : String
to_s(io : IO) : Nil to_s, to_yaml(io : IO)
to_yaml 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.newSource

Class Method Detail

def self.base64digest(data) : StringSource

Returns the base64-encoded hash of data.

require "digest/sha1"

Digest::SHA1.base64digest("foo") # => "C+7Hteo/D9vJXQ3UfzxbwnXaijM="

def self.base64digest(& : self -> _) : StringSource

Yields a context object with an #update(data : String | Bytes) method available. Returns the resulting digest in base64 representation afterwards.

require "digest/sha1"

Digest::SHA1.base64digest do |ctx|
  ctx.update "f"
  ctx.update "oo"
end
# => "C+7Hteo/D9vJXQ3UfzxbwnXaijM="

def self.digest(data)Source

Returns the hash of data. data must respond to #to_slice.

def self.digest(& : self -> ) : BytesSource

Yields an instance of self which can receive calls to #update(data : String | Bytes) and returns the finalized digest afterwards.

require "digest/md5"

digest = Digest::MD5.digest do |ctx|
  ctx.update "f"
  ctx.update "oo"
end
digest.to_slice.hexstring # => "acbd18db4cc2f85cedef654fccc4a4d8"

def self.hexdigest(data) : StringSource

Returns the hexadecimal representation of the hash of data.

require "digest/md5"

Digest::MD5.hexdigest("foo") # => "acbd18db4cc2f85cedef654fccc4a4d8"

def self.hexdigest(& : self -> ) : StringSource

Yields a context object with an #update(data : String | Bytes) method available. Returns the resulting digest in hexadecimal representation afterwards.

require "digest/md5"

Digest::MD5.hexdigest("foo") # => "acbd18db4cc2f85cedef654fccc4a4d8"
Digest::MD5.hexdigest do |ctx|
  ctx.update "f"
  ctx.update "oo"
end
# => "acbd18db4cc2f85cedef654fccc4a4d8"

Instance Method Detail

def digest_size : Int32Source

Description copied from class Digest::Base

Returns the digest output size in bytes.

© 2012–2020 Manas Technology Solutions.
Licensed under the Apache License, Version 2.0.
https://crystal-lang.org/api/0.35.1/Digest/MD5.html