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Catch exceptions coming from decrypt() #5

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16 changes: 10 additions & 6 deletions lib/cipher.ex
Original file line number Diff line number Diff line change
Expand Up @@ -33,12 +33,16 @@ defmodule Cipher do
```
"""
def decrypt(crypted) when is_binary(crypted) do
res = crypted |> URI.decode_www_form |> Base.decode64
case res do
{:ok, decoded} ->
:crypto.block_decrypt(:aes_cbc128, @k, @i, decoded) |> depad
:error ->
{:error, "Could not decode crypted string '#{crypted}'"}
try do
res = crypted |> URI.decode_www_form |> Base.decode64
case res do
{:ok, decoded} ->
:crypto.block_decrypt(:aes_cbc128, @k, @i, decoded) |> depad
:error ->
{:error, "Could not decode crypted string '#{crypted}'"}
end
rescue
e in ArgumentError -> {:error, e.message}
end
end

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