Add ed25519 TLV to design doc
Signed-off-by: Fabio Utzig <utzig@apache.org>
diff --git a/docs/design.md b/docs/design.md
index 7955d64..f469d45 100644
--- a/docs/design.md
+++ b/docs/design.md
@@ -97,6 +97,7 @@
#define IMAGE_TLV_ECDSA224 0x21 /* ECDSA of hash output */
#define IMAGE_TLV_ECDSA256 0x22 /* ECDSA of hash output */
#define IMAGE_TLV_RSA3072_PSS 0x23 /* RSA3072 of hash output */
+#define IMAGE_TLV_ED25519 0x24 /* ED25519 of hash output */
```
Optional type-length-value records (TLVs) containing image metadata are placed