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| -rw-r--r-- | docs/security.rst | 37 | ||||
| -rw-r--r-- | docs/spelling_wordlist.txt | 1 |
2 files changed, 36 insertions, 2 deletions
diff --git a/docs/security.rst b/docs/security.rst index 13f99960..1cc1273d 100644 --- a/docs/security.rst +++ b/docs/security.rst @@ -5,6 +5,39 @@ We take the security of ``cryptography`` seriously. The following are a set of policies we have adopted to ensure that security issues are addressed in a timely fashion. +What is a security issue? +------------------------- + +Anytime it's possible to write code using ``cryptography``'s public API which +does not provide the guarantees that a reasonable developer would expect it to +based on our documentation. + +That's a bit academic, but basically it means the scope of what we consider a +vulnerability is broad, and we do not require a proof of concept or even a +specific exploit, merely a reasonable threat model under which ``cryptography`` +could be attacked. + +To give a few examples of things we would consider security issues: + +* If a recipe, such as Fernet, made it easy for a user to bypass + confidentiality or integrity with the public API (e.g. if the API let a user + reuse nonces). +* If, under any circumstances, we used a CSPRNG which wasn't fork-safe. +* If ``cryptography`` used an API in an underlying C library and failed to + handle error conditions safely. + +Examples of things we wouldn't consider security issues: + +* Offering ECB mode for symmetric encryption in the *Hazmat* layer. Though ECB + is critically weak, it is documented as being weak in our documentation. +* Using a variable time comparison somewhere, if it's not possible to + articulate any particular program in which this would result in problematic + information disclosure. + +In general, if you're unsure, we request that you to default to treating things +as security issues and handling them sensitively, the worst thing that can +happen is that we'll ask you to file a bug issue. + Reporting a security issue -------------------------- @@ -14,7 +47,7 @@ tracker. If you believe you've identified a security issue with ``cryptography``, please report it to ``alex.gaynor@gmail.com``. Messages may be optionally encrypted with PGP using key fingerprint -``E27D 4AA0 1651 72CB C5D2 AF2B 125F 5C67 DFE9 4084`` (this public key is +``F7FC 698F AAE2 D2EF BECD E98E D1B3 ADC0 E023 8CA6`` (this public key is available from most commonly-used key servers). Once you've submitted an issue via email, you should receive an acknowledgment @@ -25,7 +58,7 @@ Supported Versions ------------------ At any given time, we will provide security support for the `master`_ branch -as well as the 2 most recent releases. +as well as the most recent release. New releases for OpenSSL updates -------------------------------- diff --git a/docs/spelling_wordlist.txt b/docs/spelling_wordlist.txt index 6def7959..47415a7e 100644 --- a/docs/spelling_wordlist.txt +++ b/docs/spelling_wordlist.txt @@ -45,6 +45,7 @@ multi naïve namespace namespaces +nonces Nonces online paddings |