tools:dropbear添加新的密钥交换协议

最新推荐文章于 2025-06-06 10:21:48 发布

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最新推荐文章于 2025-06-06 10:21:48 发布 · 2.6k 阅读

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CC 4.0 BY-SA版权

文章标签：

#dropbear #密钥交换协议 #diffie-hellman-group

源码地址

https://github.com/barryk/android_external_dropbear

【这个版本只到0.52，而0.52只支持一种密钥交换协议diffie-hellman-group-sha1】

本文实现：添加diffie-hellman-group14-sha1

修改的源文件包括

sysoptions.h

 /* various algorithm identifiers */
 #define DROPBEAR_KEX_DH_GROUP1 0
+#define DROPBEAR_KEX_DH_GROUP14 1
 
 #define DROPBEAR_SIGNKEY_ANY 0
 #define DROPBEAR_SIGNKEY_RSA 1

common-kex.c

 	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 #define DH_P_LEN sizeof(dh_p_val)
 
+#define DH_P_1_LEN 128
+static const unsigned char dh_p_1[DH_P_1_LEN] = {
+	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2,
+    0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1,
+	0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74, 0x02, 0x0B, 0xBE, 0xA6,
+	0x3B, 0x13, 0x9B, 0x22, 0x51, 0x4A, 0x08, 0x79, 0x8E, 0x34, 0x04, 0xDD,
+	0xEF, 0x95, 0x19, 0xB3, 0xCD, 0x3A, 0x43, 0x1B, 0x30, 0x2B, 0x0A, 0x6D,
+	0xF2, 0x5F, 0x14, 0x37, 0x4F, 0xE1, 0x35, 0x6D, 0x6D, 0x51, 0xC2, 0x45,
+	0xE4, 0x85, 0xB5, 0x76, 0x62, 0x5E, 0x7E, 0xC6, 0xF4, 0x4C, 0x42, 0xE9,
+	0xA6, 0x37, 0xED, 0x6B, 0x0B, 0xFF, 0x5C, 0xB6, 0xF4, 0x06, 0xB7, 0xED,
+	0xEE, 0x38, 0x6B, 0xFB, 0x5A, 0x89, 0x9F, 0xA5, 0xAE, 0x9F, 0x24, 0x11,
+	0x7C, 0x4B, 0x1F, 0xE6, 0x49, 0x28, 0x66, 0x51, 0xEC, 0xE6, 0x53, 0x81,
+	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+
+#define DH_P_14_LEN 256
+static const unsigned char dh_p_14[DH_P_14_LEN] = {
+	0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xC9, 0x0F, 0xDA, 0xA2, 
+    0x21, 0x68, 0xC2, 0x34, 0xC4, 0xC6, 0x62, 0x8B, 0x80, 0xDC, 0x1C, 0xD1, 
+	0x29, 0x02, 0x4E, 0x08, 0x8A, 0x67, 0xCC, 0x74,