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added comment about security of zero iv + nonce first data block

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wangyu 2017-08-13 21:27:53 +08:00
parent 7ac0d3561d
commit 5a4e3302e2
1 changed files with 5 additions and 2 deletions
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7
encrypt.cpp
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@ -11,8 +11,11 @@
//static uint64_t seq=1; //static uint64_t seq=1;
static int8_t zero_iv[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0};//this prog use zero iv,you should make sure first block of data contains a random/nonce data static int8_t zero_iv[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0};//this prog use zero iv,you should make sure first block of data contains a random/nonce data
/****
* important!
* why zero iv + nonce first data block is secure?
* https://crypto.stackexchange.com/questions/5421/using-cbc-with-a-fixed-iv-and-a-random-first-plaintext-block
****/
unordered_map<int, const char *> auth_mode_tostring = {{auth_none, "none"}, {auth_md5, "md5"}, {auth_crc32, "crc32"},{auth_simple,"simple"}}; unordered_map<int, const char *> auth_mode_tostring = {{auth_none, "none"}, {auth_md5, "md5"}, {auth_crc32, "crc32"},{auth_simple,"simple"}};
unordered_map<int, const char *> cipher_mode_tostring={{cipher_none,"none"},{cipher_aes128cbc,"aes128cbc"},{cipher_xor,"xor"}}; unordered_map<int, const char *> cipher_mode_tostring={{cipher_none,"none"},{cipher_aes128cbc,"aes128cbc"},{cipher_xor,"xor"}};