tree 9758909fe748ea9b0027dad6124c67c832cb0a02
parent 2975571ff560dd9863f77c2771c365ec6b90cf4a
author Gilles Peskine <Gilles.Peskine@arm.com> 1573226656 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1573639079 +0100

Fix errors in the definition of MBEDTLS_PK_SIGNATURE_MAX_SIZE

The initial value for the max calculation needs to be 0. The fallback
needs to come last. With the old code, the value was never smaller
than the fallback.

For RSA_ALT, use MPI_MAX_SIZE. Only use this if RSA_ALT is enabled.

For PSA, check PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE, and separately check
the special case of ECDSA where PSA and mbedtls have different
representations for the signature.