ark1668ed-bsp/doc/RSA2048验签使用说明/ark1668ed安全升级验证说明.txt

#使用RSA2048验签的过程中，使用的RSS模式填充数据，盐度是32.
打开include/configs/your_board.h中的
设置 #define ARK_UPDATE_SECURITY     1
使用安全升级

# 生成RSA2048密钥对
openssl genpkey -algorithm RSA -pkeyopt rsa_keygen_bits:2048 -out rsa_private.pem
openssl rsa -pubout -in rsa_private.pem -out rsa_public.pem

#将公钥数据十六进制的数据转换成数组数据形式
openssl rsa -pubin -in rsa_public.pem -modulus -noout | awk -F '=' '{print $2}' |  xxd -r -p |  xxd -i

  0xcd, 0xf4, 0x38, 0x81, 0x83, 0x2a, 0x03, 0x1c, 0xf2, 0x11, 0xe8, 0xd5,
  0x9a, 0xec, 0xa6, 0x27, 0x1c, 0x22, 0x1a, 0x0b, 0x82, 0x7c, 0xe9, 0xb2,
  0x1b, 0x0a, 0x23, 0xf5, 0x07, 0x57, 0x6e, 0x5e, 0x28, 0x5c, 0x17, 0xcd,
  0x6e, 0xae, 0x63, 0x9c, 0x01, 0x1c, 0xd1, 0xf1, 0x67, 0xbc, 0xa3, 0x6d,
  0x26, 0x99, 0x5e, 0x82, 0xce, 0x57, 0x68, 0xbb, 0xbb, 0x39, 0x39, 0x97,
  0x5f, 0x27, 0x50, 0xcc, 0x29, 0xda, 0x40, 0x97, 0x77, 0x52, 0x87, 0xc4,
  0xfb, 0x8f, 0x1e, 0xa0, 0xc2, 0x09, 0xc9, 0x45, 0x8f, 0x45, 0x55, 0x00,
  0xe9, 0xb4, 0x8d, 0x6a, 0x2e, 0x56, 0xec, 0xb6, 0x3f, 0x05, 0x1b, 0x89,
  0xaa, 0xb9, 0x83, 0xa8, 0x60, 0xc4, 0xe5, 0xc2, 0x79, 0x9e, 0x02, 0x85,
  0x66, 0x47, 0xdc, 0xe3, 0x89, 0x38, 0x64, 0x6e, 0x26, 0xc1, 0x01, 0x9e,
  0x54, 0x2d, 0xc4, 0x7e, 0x88, 0x78, 0x81, 0xb8, 0x41, 0xa2, 0x08, 0x5f,
  0xa5, 0xb8, 0xbc, 0x4b, 0x6c, 0x95, 0xae, 0x95, 0xb7, 0x15, 0x48, 0x58,
  0x41, 0x4a, 0x3c, 0xe5, 0xe4, 0xb2, 0xe0, 0x97, 0x10, 0x04, 0x77, 0x43,
  0x4d, 0x50, 0xab, 0xac, 0xcf, 0xe8, 0x43, 0x7c, 0x12, 0x96, 0x7c, 0x85,
  0x71, 0x10, 0x50, 0xc0, 0x7f, 0x46, 0x38, 0x0e, 0xef, 0xd5, 0xb3, 0x62,
  0xd7, 0x84, 0xa9, 0xc6, 0xc2, 0x62, 0xbb, 0xc3, 0x31, 0x42, 0xe6, 0x91,
  0x55, 0x5e, 0xdc, 0xf2, 0xe5, 0xc7, 0x96, 0x7e, 0x37, 0x2b, 0x20, 0x20,
  0x0e, 0x22, 0x5d, 0x5d, 0x84, 0x2c, 0xd3, 0xa5, 0xb5, 0x6a, 0x44, 0x97,
  0xa0, 0x41, 0xdb, 0x3f, 0x59, 0x04, 0xf5, 0x62, 0xef, 0x69, 0x95, 0xfb,
  0x63, 0xcb, 0xb6, 0xe2, 0x88, 0x42, 0x83, 0x86, 0x58, 0xe1, 0xc7, 0x87,
  0x48, 0x92, 0x95, 0x3b, 0x33, 0x9c, 0xc8, 0x02, 0x3b, 0x3d, 0x77, 0x35,
  0xd5, 0x1d, 0x16, 0x07
生成的公钥替换u-boot/boatd/arkmicro/your_board/keys.h中的key_pm值


#计算数据的 SHA-256 哈希
openssl dgst -sha256 -binary -out META-INF/u-boot.SF u-boot.img

#使用私钥对哈希进行签名
openssl pkeyutl -sign -in META-INF/u-boot.SF -out META-INF/u-boot.RSA -inkey private_key.pem -pkeyopt digest:sha256 -pkeyopt rsa_padding_mode:pss -pkeyopt rsa_pss_saltlen:-1

#最后将生成的文件压缩成update.zip文件，放置在u盘/sd卡的根目录下。
#注意空片升级的时候要将arksdldr.bin和u-boot.bin 同时放在u盘/sd卡的根目录下。