熟悉OPENSSL的請進

huxk

現(xiàn)在我要使用 DES_ncbc_encrypt 加密報文，密鑰需要動態(tài)生成
開始使用 DES_random_key 這個函數(shù) 這個函數(shù)可用 而且也不會報 weak key

但看到OPENSSL作者的注釋【見下面】 我使用

1. void des_key_gen(const char *str,DES_cblock *deskey)
   
2.         {
   
3.         unsigned char        b[16] = {0};
   
4.         unsigned char *out = &(*deskey)[0];
   
5.         MD5(str,strlen(str),b);
   
6.         memcpy(out,b,8);
   
7.         }
   

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函數(shù)來產生KEY    但 DES_set_key_checked 函數(shù)檢查時報weak key

有人這樣搞過么？或者大家動態(tài)生成DES密鑰用什么算法好？不吝賜教。

1. void des_string_to_key( char *str, des_cblock *key);

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This function takes str and converts it into a DES key.  
I would recommend using MD5 instead and use the first 8 bytes of output.When I wrote the first version of these routines back in 1990, MD5 did not exist but I feel these routines are still sound.  This
routines is compatible with the one in MIT's libdes.

1. void des_random_seed( des_cblock key);

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This routine sets a starting point for des_random_key().

1. void des_random_key( des_cblock ret); This function return a random key.

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Make sure to 'seed' the random number generator (with des_random_seed()) before using this function.
I personally now use a MD5 based random number system.

huxk

有人嗎？呼叫 ....................

bittertea

1。自己生成密鑰，然后調用des_set_key_unchecked

2�；蛘哂肞BE方式（PKCS#5）根據(jù)一個密碼產生任意長度得密鑰

yahnn

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