45 lines
1.4 KiB
Elixir
45 lines
1.4 KiB
Elixir
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# Pleroma: A lightweight social networking server
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# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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# SPDX-License-Identifier: AGPL-3.0-only
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defmodule Pleroma.Keys do
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# Native generation of RSA keys is only available since OTP 20+ and in default build conditions
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# We try at compile time to generate natively an RSA key otherwise we fallback on the old way.
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try do
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_ = :public_key.generate_key({:rsa, 2048, 65_537})
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def generate_rsa_pem do
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key = :public_key.generate_key({:rsa, 2048, 65_537})
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entry = :public_key.pem_entry_encode(:RSAPrivateKey, key)
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pem = :public_key.pem_encode([entry]) |> String.trim_trailing()
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{:ok, pem}
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end
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rescue
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_ ->
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def generate_rsa_pem do
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port = Port.open({:spawn, "openssl genrsa"}, [:binary])
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{:ok, pem} =
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receive do
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{^port, {:data, pem}} -> {:ok, pem}
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end
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Port.close(port)
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if Regex.match?(~r/RSA PRIVATE KEY/, pem) do
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{:ok, pem}
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else
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:error
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end
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end
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end
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def keys_from_pem(pem) do
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[private_key_code] = :public_key.pem_decode(pem)
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private_key = :public_key.pem_entry_decode(private_key_code)
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{:RSAPrivateKey, _, modulus, exponent, _, _, _, _, _, _, _} = private_key
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public_key = {:RSAPublicKey, modulus, exponent}
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{:ok, private_key, public_key}
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end
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end
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