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Size: 1.87 KB
Versions: 15
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Stored size: 1.87 KB
Contents
module RASN1
module Types
# ASN.1 Object ID
# @author Sylvain Daubert
class ObjectId < Primitive
TAG = 6
private
def value_to_der
ids = @value.split('.').map! { |str| str.to_i }
if ids[0] > 2
raise ASN1Error, 'OBJECT ID #@name: first subidentifier should be less than 3'
end
if ids[0] < 2 and ids[1] > 39
raise ASN1Error, 'OBJECT ID #@name: second subidentifier should be less than 40'
end
ids[0, 2] = ids[0] * 40 + ids[1]
ids.map! do |v|
next v if v < 128
ary = []
while v > 0
ary.unshift (v & 0x7f) | 0x80
v >>= 7
end
ary[-1] &= 0x7f
ary
end
ids.flatten.pack('C*')
end
def der_to_value(der, ber: false)
bytes = der.unpack('C*')
ids = if bytes[0] < 80
remove = 1
[ bytes[0] / 40, bytes[0] % 40]
elsif bytes[0] < 128
remove = 1
[2, bytes[0] - 80]
else
remove = 1
second_id = bytes[0] & 0x7f
bytes[1..-1].each do |byte|
remove += 1
second_id <<= 7
if byte < 128
second_id |= byte
break
else
second_id |= byte & 0x7f
end
end
[2, second_id - 80]
end
id = 0
bytes.shift(remove)
bytes.each do |byte|
if byte < 128
if id == 0
ids << byte
else
ids << ((id << 7) | byte)
id = 0
end
else
id = (id << 7) | (byte & 0x7f)
end
end
@value = ids.join('.')
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems