tree 0a660fed2f1a8f8d3ff8a9253548ce60ac65972c
parent a395bdd06601da6853b5c50afd3eb1c738aa15f8
author Gilles Peskine <Gilles.Peskine@arm.com> 1708346985 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1708346985 +0100

mbedtls_ecp_write_key: document and test smaller output buffer

Document and test the current behavior, even if it is weird:

* For Weierstrass keys, the error is MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL,
  not MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL.
* For Weierstrass keys, a smaller output buffer is ok if the output fits.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>