48 lines
975 B
Ruby
48 lines
975 B
Ruby
module Fog
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class HMAC
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def initialize(type, key)
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@key = key
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case type
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when 'sha1'
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setup_sha1
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when 'sha256'
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setup_sha256
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end
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end
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def sign(data)
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@signer.call(data)
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end
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private
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def setup_sha1
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@digest = OpenSSL::Digest::Digest.new('sha1')
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@signer = lambda do |data|
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OpenSSL::HMAC.digest(@digest, @key, data)
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end
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end
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def setup_sha256
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begin
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@digest = OpenSSL::Digest::Digest.new('sha256')
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@signer = lambda do |data|
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OpenSSL::HMAC.digest(@digest, @key, data)
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end
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rescue RuntimeError => error
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unless error.message == 'Unsupported digest algorithm (sha256).'
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raise error
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else
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require 'hmac-sha2'
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@hmac = ::HMAC::SHA256.new(@key)
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@signer = lambda do |data|
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@hmac.update(data)
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@hmac.digest
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end
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end
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end
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end
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end
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end |