8000 Behaviour change in `crypto:verify/5` between 24.3.4.5 and 25.0 · Issue #6313 · erlang/otp · GitHub
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Behaviour change in crypto:verify/5 between 24.3.4.5 and 25.0 #6313

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mtrudel opened this issue Sep 18, 2022 · 2 comments
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Behaviour change in crypto:verify/5 between 24.3.4.5 and 25.0 #6313

mtrudel opened this issue Sep 18, 2022 · 2 comments
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@IngelaAndin
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bug Issue is reported as a bug duplicate team:PS Assigned to OTP team PS
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OTP-25.1

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@mtrudel
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mtrudel commented Sep 18, 2022 •
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Describe the bug
Calls to crypto:verify/5 which succeeded on OTP up to and including 24.3.4.5 now fail on OTP 25.0 and newer.

To Reproduce

Message = <<115, 205, 18, 146, 208, 219, 183, 107, 241, 205, 182, 147, 60, 175, 110, 115,
  186, 186, 9, 228, 115, 196, 97, 28, 38, 200, 191, 59, 112, 141, 3, 54, 69, 66,
  70, 66, 56, 65, 56, 50, 45, 57, 69, 52, 48, 45, 52, 57, 57, 69, 45, 66, 68,
  53, 49, 45, 51, 50, 52, 50, 68, 55, 48, 57, 57, 69, 56, 53, 86, 64, 132, 242,
  162, 131, 28, 46, 85, 114, 54, 183, 19, 255, 150, 107, 23, 18, 227, 60, 190,
  106, 248, 156, 48, 74, 18, 58, 235, 168, 156, 216>>.
Signature = <<214, 188, 190, 17, 243, 236, 205, 32, 101, 36, 137, 44, 107, 221, 72, 134,
  119, 8, 223, 217, 136, 25, 143, 111, 222, 79, 160, 76, 59, 163, 75, 126, 3,
  177, 69, 235, 36, 216, 139, 69, 213, 24, 115, 198, 42, 227, 173, 162, 136,
  163, 8, 149, 154, 201, 73, 78, 254, 67, 75, 69, 82, 176, 13, 8>>.
Key = <<86, 64, 132, 242, 162, 131, 28, 46, 85, 114, 54, 183, 19, 255, 150, 107, 23,
  18, 227, 60, 190, 106, 248, 156, 48, 74, 18, 58, 235, 168, 156, 216>>.
crypto:verify(eddsa, sha512, Message, Signature, [Key, ed25519]).

The above call returns true on OTP 24.3.4.5 (and all earlier versions that I've tried), and false on OTP 25.0 and newer

(Mis)behaviour verified on macOS 12.3.1 (Erlang installed via asdf), and aarch64 linux (via official Docker images)

Expected behavior

OTP behaviour should be unchanged

Affected versions

OTP 25.0 and newer
@mtrudel mtrudel added the bug Issue is reported as a bug label Sep 18, 2022
@IngelaAndin IngelaAndin added the team:PS Assigned to OTP team PS label Sep 19, 2022
@IngelaAndin IngelaAndin self-assigned this Sep 19, 2022
@IngelaAndin IngelaAndin added this to the OTP-25.1 milestone Sep 19, 2022
@IngelaAndin
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This has been fixed in OTP-25.1, planned to be released on Wednesday 21 September. This issue is a duplicate of #6219

@mtrudel
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mtrudel commented Sep 19, 2022

I can confirm that this is fixed on master. Thanks for the quick turnaround!

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@IngelaAndin IngelaAndin

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