Add a minimum rsa key size config to psa config
Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
diff --git a/include/psa/crypto_sizes.h b/include/psa/crypto_sizes.h
index 8cc965b..fd0eeb9 100644
--- a/include/psa/crypto_sizes.h
+++ b/include/psa/crypto_sizes.h
@@ -208,6 +208,18 @@
* operations, and does not need to accept all key sizes up to the limit. */
#define PSA_VENDOR_RSA_MAX_KEY_BITS 4096
+/* The minimum size of an RSA key on this implementation, in bits.
+ * This is a vendor-specific macro.
+ *
+ * Limits RSA key generation to a minimum due to security reasons.
+ * This value cannot be less than 128 bits.
+ */
+#if defined(MBEDTLS_RSA_MIN_KEY_SIZE)
+#define PSA_VENDOR_RSA_MIN_KEY_BITS MBEDTLS_RSA_MIN_KEY_SIZE
+#else
+#define PSA_VENDOR_RSA_MIN_KEY_BITS 1024
+#endif
+
/* The maximum size of an DH key on this implementation, in bits.
*
* Note that an implementation may set different size limits for different