[PATCH v2] rsa: adds rsa3072 algorithm

[Jamin Lin <jamin_lin@aspeedtech.com>]

Add to support rsa 30272 bits algorithm in tools
for image sign at host side and adds rsa 3027 bits
verification in the image binary.

Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
wq
---
 include/u-boot/rsa.h   | 1 +
 lib/rsa/rsa-verify.c   | 6 ++++++
 tools/image-sig-host.c | 7 +++++++
 3 files changed, 14 insertions(+)

diff --git a/include/u-boot/rsa.h b/include/u-boot/rsa.h
index 7556aa5b4b..bb56c2243c 100644
--- a/include/u-boot/rsa.h
+++ b/include/u-boot/rsa.h
@@ -110,6 +110,7 @@ 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 */
diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c
index 83f7564101..4fe487d7e5 100644
--- a/lib/rsa/rsa-verify.c
+++ b/lib/rsa/rsa-verify.c
@@ -588,6 +588,12 @@ U_BOOT_CRYPTO_ALGO(rsa2048) = {
 	.verify = rsa_verify,
 };
 
+U_BOOT_CRYPTO_ALGO(rsa3072) = {
+	.name = "rsa3072",
+	.key_len = RSA3072_BYTES,
+	.verify = rsa_verify,
+};
+
 U_BOOT_CRYPTO_ALGO(rsa4096) = {
 	.name = "rsa4096",
 	.key_len = RSA4096_BYTES,
diff --git a/tools/image-sig-host.c b/tools/image-sig-host.c
index 8ed6998dab..d0133aec4c 100644
--- a/tools/image-sig-host.c
+++ b/tools/image-sig-host.c
@@ -55,6 +55,13 @@ 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,
-- 
2.17.1