[PATCH u-boot v2019.04-aspeed-openbmc v0 1/1] rsa: adds rsa3072 algorithm

[Jamin Lin <jamin_lin@aspeedtech.com>]

Add to support rsa 3072 bits algorithm in tools
for image sign at host side and adds rsa 3072 bits
verification in the image binary.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Change-Id: I98a8b2fabc2d64e5e3c7e04bc7ba78b9f10cee35
(cherry picked from commit 21426358d482b1ea181abbca4d32426ddf887dda)
---
 common/image-sig.c   | 7 +++++++
 include/u-boot/rsa.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/common/image-sig.c b/common/image-sig.c
index e4bbac55c1..c94854ef8b 100644
--- a/common/image-sig.c
+++ b/common/image-sig.c
@@ -85,6 +85,13 @@ struct crypto_algo crypto_algos[] = {
 		.add_verify_data = rsa_add_verify_data,
 		.verify = rsa_verify,
 	},
+	{
+		.name = "rsa3072",
+		.key_len = RSA3072_BYTES,
+		.sign = rsa_sign,
+		.add_verify_data = rsa_add_verify_data,
+		.verify = rsa_verify,
+	},
 	{
 		.name = "rsa4096",
 		.key_len = RSA4096_BYTES,
diff --git a/include/u-boot/rsa.h b/include/u-boot/rsa.h
index 2d3024d8b7..d561e5f8ca 100644
--- a/include/u-boot/rsa.h
+++ b/include/u-boot/rsa.h
@@ -135,6 +135,7 @@ static inline int padding_pss_verify(struct image_sign_info *info,
 #define RSA_DEFAULT_PADDING_NAME		"pkcs-1.5"
 
 #define RSA2048_BYTES	(2048 / 8)
+#define RSA3072_BYTES	(3072 / 8)
 #define RSA4096_BYTES	(4096 / 8)
 
 /* This is the minimum/maximum key size we support, in bits */
-- 
2.17.1