50 lines
916 B
Crystal
50 lines
916 B
Crystal
require "option_parser"
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require "../src/sodium/digest/blake2b"
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require "openssl"
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out_size = 64
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buf_size = 8192
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digest_name = "blake2b"
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optp = OptionParser.new
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optp.on("--out-size=INT", "") { |arg| out_size = arg.to_i }
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optp.on("--buf-size=INT", "") { |arg| buf_size = arg.to_i }
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optp.on("--digest=NAME", "") { |arg| digest_name = arg }
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optp.parse
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class Digest::Null < Digest
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def update_impl(data : Bytes) : Nil
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end
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def final_impl(data : Bytes) : Nil
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end
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def reset_impl : Nil
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end
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def digest_size : Int32
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0
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end
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end
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digest = case digest_name
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when "blake2b"
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Sodium::Digest::Blake2b.new out_size
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when "null"
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Digest::Null.new
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else
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# raise "foo"
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OpenSSL::Digest.new digest_name
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end
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buf = Bytes.new buf_size
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loop do
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r = STDIN.read buf
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break if r <= 0
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digest.update buf[0, r]
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end
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puts digest.final.hexstring
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