# File lib/hmac/hmac.rb, line 74 def digest check_status @md.digest end
# File lib/hmac/hmac.rb, line 79 def hexdigest check_status @md.hexdigest end
# File lib/hmac/hmac.rb, line 51 def reset_key @key_xor_ipad.gsub!(/./, '?') @key_xor_opad.gsub!(/./, '?') @key_xor_ipad[0..-1] = '' @key_xor_opad[0..-1] = '' @status = STATUS_UNDEFINED end
# File lib/hmac/hmac.rb, line 35 def set_key(key) # If key is longer than the block size, apply hash function # to key and use the result as a real key. key = @algorithm.digest(key) if key.size > @block_size key_xor_ipad = "\x36" * @block_size key_xor_opad = "\x5C" * @block_size for i in 0 .. key.size - 1 key_xor_ipad[i] ^= key[i] key_xor_opad[i] ^= key[i] end @key_xor_ipad = key_xor_ipad @key_xor_opad = key_xor_opad @md = @algorithm.new @status = STATUS_INITIALIZED end
# File lib/hmac/hmac.rb, line 59 def update(text) check_status # perform inner H md = @algorithm.new md.update(@key_xor_ipad) md.update(text) str = md.digest # perform outer H md = @algorithm.new md.update(@key_xor_opad) md.update(str) @md = md end
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