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Add output size parameter to signature functions

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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>
This commit is contained in:
Gilles Peskine 2021-06-22 00:09:00 +02:00
parent 1fed4b8324
commit f00f152444
19 changed files with 131 additions and 81 deletions
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2
programs/ssl/ssl_server2.c
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@ -1131,7 +1131,7 @@ static int ssl_async_resume( mbedtls_ssl_context *ssl,
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: