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3 commits

Author SHA1 Message Date
Gilles Peskine af3baabd05 Define max sizes for MAC and signatures
This requires defining a maximum RSA key size, since the RSA key size
is the signature size. Enforce the maximum RSA key size when importing
or generating a key.
2018-09-12 16:41:11 +03:00
Gilles Peskine 49cee6c582 Move implementation-dependent size macros to crypto_sizes.h
Macros such as PSA_HASH_SIZE whose definitions can be the same
everywhere except in implementations that support non-standard
algorithms remain in crypto.h, at least for the time being.
2018-09-12 16:41:11 +03:00
Gilles Peskine 0cad07c2fb New header crypto_sizes.h
This header will contain macros that calculate buffer sizes, whose
semantics are standardized but whose definitions are
implementation-specific because they depend on the available algorithms
and on some permitted buffer size tolerances.

Move size macros from crypto_struct.h to crypto_sizes.h, because these
definitions need to be available both in the frontend and in the
backend, whereas structures have different contents.
2018-09-12 16:41:11 +03:00