From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
u-boot/lib/rsa/rsa-sign.c | 21 +++++++++++++++------
1 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/u-boot/lib/rsa/rsa-sign.c b/u-boot/lib/rsa/rsa-sign.c
index fed64d5..71a940c 100644
--- a/u-boot/lib/rsa/rsa-sign.c
+++ b/u-boot/lib/rsa/rsa-sign.c
@@ -610,7 +610,7 @@
BIGNUM **modulusp, BIGNUM **exponent_BN, BIGNUM **r_squaredp,
BIGNUM **c_factorp, BIGNUM **np_factorp)
{
- BIGNUM *big1, *big2, *big32, *big2_32, *big4100, *big2180;
+ BIGNUM *big1, *big2, *big32, *big2_32, *big4100, *big2180, *big4228;
BIGNUM *n, *e, *r, *r_squared, *tmp, *c_factor, *np_factor;
const BIGNUM *key_n, *key_e;
BN_CTX *bn_ctx = BN_CTX_new();
@@ -622,6 +622,7 @@
big32 = BN_new();
big4100 = BN_new();
big2180 = BN_new();
+ big4228 = BN_new();
r = BN_new();
r_squared = BN_new();
@@ -631,7 +632,7 @@
big2_32 = BN_new();
n = BN_new();
e = BN_new();
- if (!big1 || !big2 || !big32 || !big4100 || !big2180 || !r ||
+ if (!big1 || !big2 || !big32 || !big4100 || !big2180 || !big4228 || !r ||
!r_squared || !tmp || !big2_32 || !n || !e ||
!c_factor || !np_factor) {
fprintf(stderr, "Out of memory (bignum)\n");
@@ -645,7 +646,8 @@
if (!BN_copy(n, key_n) || !BN_copy(e, key_e) ||
!BN_set_word(big1, 1L) ||
!BN_set_word(big2, 2L) || !BN_set_word(big32, 32L) ||
- !BN_set_word(big4100, 4100L) || !BN_set_word(big2180, 2180L))
+ !BN_set_word(big4100, 4100L) || !BN_set_word(big2180, 2180L) ||
+ !BN_set_word(big4228, 4228L))
ret = -1;
/* big2_32 = 2^32 */
@@ -675,9 +677,15 @@
ret = -1;
/* Calculate np_factor = 2^2180 div n */
- if (!BN_exp(tmp, big2, big2180, bn_ctx) ||
- !BN_div(np_factor, NULL, tmp, n, bn_ctx))
- ret = -1;
+ if (BN_num_bits(n) == 2048) {
+ if (!BN_exp(tmp, big2, big2180, bn_ctx) ||
+ !BN_div(np_factor, NULL, tmp, n, bn_ctx))
+ ret = -1;
+ } else {/* Calculate 4096 np_factor = 2^4228 div n */
+ if (!BN_exp(tmp, big2, big4228, bn_ctx) ||
+ !BN_div(np_factor, NULL, tmp, n, bn_ctx))
+ ret = -1;
+ }
*modulusp = n;
*exponent_BN = e;
@@ -690,6 +698,7 @@
BN_free(big32);
BN_free(big4100);
BN_free(big2180);
+ BN_free(big4228);
BN_free(r);
BN_free(tmp);
BN_free(big2_32);
--
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