Cloak issue - (UndefinedFunctionError) function :crypto.stream_init/3 is undefined or private

Questions & Help Questions
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1

Hi All,

I have upgraded cloak version from 0.6.2 to {:cloak_ecto, “~> 1.0.0”}
Erlang/OTP 25 [erts-13.0.3] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:1] [jit:ns]
Elixir 1.13.4 (compiled with Erlang/OTP 25)

Whenever I try to migrate the old data or try to access them via application, I always get this error

** (UndefinedFunctionError) function :crypto.stream_init/3 is undefined or private
    (crypto 5.1.1) :crypto.stream_init(:aes_ctr, {:ok, <<56, 138, 106, 17, 173, 175, 16, 175, 12, 85, 252, 249, 179, 209, 235, 182, 107, 31, 156, 93, 236, 143, 202, 221, 116, 65, 57, 95, 143, 79, 13, 188>>}, <<43, 125, 214, 253, 52, 165, 131, 44, 177, 202, 118, 147, 35, 5, 80, 209>>)
    (cloak 1.0.3) lib/cloak/ciphers/deprecated/aes_ctr.ex:39: Cloak.Ciphers.Deprecated.AES.CTR.decrypt/2
    (my_future_now 4.0.0) lib/cloak_ecto/type.ex:47: MyApp.Encrypted.Binary.load/1
    (ecto 3.8.4) lib/ecto/type.ex:918: Ecto.Type.process_loaders/3
    (ecto 3.8.4) lib/ecto/repo/queryable.ex:403: Ecto.Repo.Queryable.struct_load!/6

Function: &:erlang.apply/2

    Args: [#Function<5.122125288/1 in Cloak.Ecto.Migrator.migrate_schema_with_data/2>, [1]]
[error] Task #PID<0.817.0> started from #PID<0.95.0> terminating
** (UndefinedFunctionError) function :crypto.stream_init/3 is undefined or private
    (crypto 5.1.1) :crypto.stream_init(:aes_ctr, {:ok, <<56, 138, 106, 17, 173, 175, 16, 175, 12, 85, 252, 249, 179, 209, 235, 182, 107, 31, 156, 93, 236, 143, 202, 221, 116, 65, 57, 95, 143, 79, 13, 188>>}, <<225, 62, 249, 49, 101, 202, 45, 28, 221, 3, 238, 254, 112, 32, 115, 255>>)
    (cloak 1.0.3) lib/cloak/ciphers/deprecated/aes_ctr.ex:39: Cloak.Ciphers.Deprecated.AES.CTR.decrypt/2
    (my_future_now 4.0.0) lib/cloak_ecto/type.ex:47: MyApp.Encrypted.Binary.load/1
    (ecto 3.8.4) lib/ecto/type.ex:918: Ecto.Type.process_loaders/3

Please help me, how rto resolve this issue.

2

Have you tried the most recent release of cloak_ecto which is “~> 1.2” ? I ask because OTP 25 is relatively recent, perhaps it is not supported by the version of cloak you are trying?

3

The function that’s missing is from “the old API” of the crypto module, which was deprecated in OTP 23 and removed entirely in OTP 24. That version of cloak_ecto will not work on anything higher than OTP 23.

From the last couple posts in your previous thread on this issue, it sounded like migrating was going to be a lengthy, incremental process:

  • upgrade to cloak 0.7 and do the data migration
  • upgrade to 0.8 and 0.9 (minor config changes)
  • THEN upgrade to Ecto 3 + 1.0, because of the changes in the type conversion machinery
  • upgrade to 1.1 to get the fix for the functions removed in OTP 24
4

Thanks for the reply.

I tried upgrading the cloak to 0.7, but could not do the data migration. As it was already started giving the error on stream_init.
Hence I tried incrementing to later versions.

5

@santoshbt the stream_init issue is because your moved to OTP 25 too fast. You’ll need to use OTP 23 until you finish the cloak upgrade, then you can switch to OTP 25.

6

I am doing the same. For time being downgrading the OTP version.

7

Even after downgrading OTP version to 23, I am facing the error “Cloak.EncryptedBinaryField.equal?/2 is undefined or private” while inserting. But getting the data is working fine. It looks like it does not move anywhere now.

I suspect by default it upgrades ecto and ecto_sql as well.
I will install them in specific and check.