Commits on Nov 24, 2022

1. Expose num parameter of the cipher

   

   wiktor-k committed Nov 24, 2022
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2. Make CipherCtx::cipher_update more flexible …

   This change relaxes constraints on the output buffer size when it can be
   safely determined how many bytes will be put in the output buffer.
   
   For supported cryptographic backends (OpenSSL >= 1.1) the cipher's `num`
   parameter will be consulted for the number of bytes in the block cache.
   For unsupported backends the behavior will not change (the code will
   assume full block in the cache).
   
   For callers that do the check themselves and want to use other backends
   (e.g. BoringSSL or LibreSSL) and unsafe `cipher_update_unchecked`
   function is added.
   
   Additionally a `CipherCtx::minimal_output_size` function is added for
   letting the callers know how big should the output buffer be for the
   next `cipher_update` call.
   
   Fixes sfackler#1729.
   
   See: https://mta.openssl.org/pipermail/openssl-users/2022-November/015623.html

   

   wiktor-k committed Nov 24, 2022
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