commit c569fc268f9195fd19decbcd6cfe1954767a54cf
author Paul Elliott <paul.elliott@arm.com> Fri Feb 10 13:02:54 2023 +0000
committer Paul Elliott <paul.elliott@arm.com> Wed Feb 15 23:34:29 2023 +0000
tree c256a9cc6ef6e2c26cf297edb71b9d6629e73679
parent 6d99f0c265305fddecf05b2f63c948163c380660

Switch from nbits to pbits

Correct coordinate size is grp.nbits, not grp.pbits.

Signed-off-by: Paul Elliott <paul.elliott@arm.com>

library/psa_crypto.c

diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 2328e35..776a9c8 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -3556,7 +3556,7 @@
     mbedtls_ecdsa_restart_init(&operation->restart_ctx);
 
     operation->coordinate_bytes = PSA_BITS_TO_BYTES(
-        operation->ctx->grp.pbits);
+        operation->ctx->grp.nbits);
 
     psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH(alg);
     operation->md_alg = mbedtls_hash_info_md_from_psa(hash_alg);
@@ -3758,7 +3758,7 @@
         return status;
     }
 
-    coordinate_bytes = PSA_BITS_TO_BYTES(operation->ctx->grp.pbits);
+    coordinate_bytes = PSA_BITS_TO_BYTES(operation->ctx->grp.nbits);
 
     if (signature_length != 2 * coordinate_bytes) {
         return PSA_ERROR_INVALID_SIGNATURE;