Change IMAGE_TLV_RSA2048 -> IMAGE_TLV_RSA2048_PSS

Clarify the name of the TLV field to more fully describe the signature
type.

Signed-off-by: Marko Kiiskila <marko@runtime.io>
Signed-off-by: David Brown <david.brown@linaro.org>

Author: Marko Kiiskila

boot/bootutil/include/bootutil/image.h

@@ -58,7 +58,7 @@ struct flash_area;
  */
 #define IMAGE_TLV_KEYHASH           0x01   /* hash of the public key */
 #define IMAGE_TLV_SHA256            0x10   /* SHA256 of image hdr and body */
-#define IMAGE_TLV_RSA2048           0x20   /* RSA2048 of hash output */
+#define IMAGE_TLV_RSA2048_PSS       0x20   /* RSA2048 of hash output */
 #define IMAGE_TLV_ECDSA224          0x21   /* ECDSA of hash output */
 #define IMAGE_TLV_ECDSA256          0x22   /* ECDSA of hash output */
 

boot/bootutil/src/image_validate.c

@@ -94,7 +94,7 @@ bootutil_img_hash(struct image_header *hdr, const struct flash_area *fap,
  * configured for any signature, don't define this macro.
  */
 #if defined(MCUBOOT_SIGN_RSA)
-#    define EXPECTED_SIG_TLV IMAGE_TLV_RSA2048
+#    define EXPECTED_SIG_TLV IMAGE_TLV_RSA2048_PSS
 #    define EXPECTED_SIG_LEN(x) ((x) == 256) /* 2048 bits */
 #    if defined(MCUBOOT_SIGN_EC) || defined(MCUBOOT_SIGN_EC256)
 #        error "Multiple signature types not yet supported"

doc/design.txt

@@ -91,7 +91,7 @@ struct image_tlv {
  * Image trailer TLV types.
  */
 #define IMAGE_TLV_SHA256            0x10   /* SHA256 of image hdr and body */
-#define IMAGE_TLV_RSA2048           0x20   /* RSA2048 of hash output */
+#define IMAGE_TLV_RSA2048_PSS       0x20   /* RSA2048 of hash output */
 #define IMAGE_TLV_ECDSA224          0x21   /* ECDSA of hash output */
 #define IMAGE_TLV_ECDSA256          0x22   /* ECDSA of hash output */