commit 4ce523256b1a4800271fca8bc79f8de05c4bfed6
author Przemek Stekiel <przemyslaw.stekiel@mobica.com> Fri Apr 28 13:40:34 2023 +0200
committer Przemek Stekiel <przemyslaw.stekiel@mobica.com> Fri Apr 28 13:40:34 2023 +0200
tree 4c0987454bd0bb2b32f9ef7dd8c23e975a1fc12f
parent eb511a44954a4cab120c26a87e9b47e2764471b4

Fix definition of PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE (ECC vs FFDH max)

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>

include/psa/crypto_sizes.h

diff --git a/include/psa/crypto_sizes.h b/include/psa/crypto_sizes.h
index 1b46c56..8fd91ff 100644
--- a/include/psa/crypto_sizes.h
+++ b/include/psa/crypto_sizes.h
@@ -987,8 +987,11 @@
  *
  * See also #PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(\p key_type, \p key_bits).
  */
-#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE   \
-    (PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS))
+#define PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE             \
+    (PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS) >   \
+     PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS) ?    \
+     PSA_BITS_TO_BYTES(PSA_VENDOR_ECC_MAX_CURVE_BITS) :   \
+     PSA_BITS_TO_BYTES(PSA_VENDOR_FFDH_MAX_KEY_BITS))
 
 /** The default IV size for a cipher algorithm, in bytes.
  *