Module: SecureRandom

Defined in:
activesupport/lib/active_support/core_ext/securerandom.rb

Constant Summary collapse

BASE58_ALPHABET = 
("0".."9").to_a + ("A".."Z").to_a + ("a".."z").to_a - ["0", "O", "I", "l"]
BASE36_ALPHABET = 
("0".."9").to_a + ("a".."z").to_a
BASE32_ALPHABET = 
("0".."9").to_a + ("A".."Z").to_a - ["I", "L", "O", "U"]

Class Method Summary collapse

Class Method Details

.base32(n = 16) ⇒ Object

SecureRandom.base32 generates a random Crockford base32 string in uppercase.

The argument n specifies the length of the random string to be generated.

If n is not specified or is nil, 16 is assumed. It may be larger in the future. This method can be used over base58 if a case-insensitive key that’s unambiguous to humans is necessary.

The result may contain alphanumeric characters in uppercase except I, L, O, and U.

p SecureRandom.base32 # => "PAK1NG78CM1HJ44A"
p SecureRandom.base32(24) # => "BN9EAB8RG9BNTTC9BX7P5JGJ"



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# File 'activesupport/lib/active_support/core_ext/securerandom.rb', line 50

def self.base32(n = 16)
  alphanumeric(n, chars: BASE32_ALPHABET)
end

.base36(n = 16) ⇒ Object

SecureRandom.base36 generates a random base36 string in lowercase.

The argument n specifies the length of the random string to be generated.

If n is not specified or is nil, 16 is assumed. It may be larger in the future. This method can be used over base58 if a deterministic case key is necessary.

The result will contain alphanumeric characters in lowercase.

p SecureRandom.base36 # => "4kugl2pdqmscqtje"
p SecureRandom.base36(24) # => "77tmhrhjfvfdwodq8w7ev2m7"



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# File 'activesupport/lib/active_support/core_ext/securerandom.rb', line 35

def self.base36(n = 16)
  alphanumeric(n, chars: BASE36_ALPHABET)
end

.base58(n = 16) ⇒ Object

SecureRandom.base58 generates a random base58 string.

The argument n specifies the length of the random string to be generated.

If n is not specified or is nil, 16 is assumed. It may be larger in the future.

The result may contain alphanumeric characters except 0, O, I, and l.

p SecureRandom.base58 # => "4kUgL2pdQMSCQtjE"
p SecureRandom.base58(24) # => "77TMHrHJFvFDwodq8w7Ev2m7"



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# File 'activesupport/lib/active_support/core_ext/securerandom.rb', line 20

def self.base58(n = 16)
  alphanumeric(n, chars: BASE58_ALPHABET)
end