commit f00f15244428a917503182c16d1c2a5cd738f91a
author Gilles Peskine <Gilles.Peskine@arm.com> Tue Jun 22 00:09:00 2021 +0200
committer Gilles Peskine <Gilles.Peskine@arm.com> Fri Jun 25 00:46:22 2021 +0200
tree 5f772ca9e07e23a296f7641530eca1f2643ce982
parent 1fed4b8324f640802e281504bfa4c8f1c0b276bb

Add output size parameter to signature functions

The functions mbedtls_pk_sign(), mbedtls_pk_sign_restartable(),
mbedtls_ecdsa_write_signature() and mbedtls_ecdsa_write_signature_restartable()
now take an extra parameter indicating the size of the output buffer for the
signature.

No change to RSA because for RSA, the output size is trivial to calculate.

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

programs/ssl/ssl_server2.c

diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index cf608b9..d2aa48a 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -1131,7 +1131,7 @@
             ret = mbedtls_pk_sign( key_slot->pk,
                                    ctx->md_alg,
                                    ctx->input, ctx->input_len,
-                                   output, output_len,
+                                   output, output_size, output_len,
                                    config_data->f_rng, config_data->p_rng );
             break;
         default: