{"id":4190,"date":"2016-07-20T14:19:46","date_gmt":"2016-07-20T05:19:46","guid":{"rendered":"http:\/\/blog.bitmeister.jp\/?p=4190"},"modified":"2016-07-19T14:20:07","modified_gmt":"2016-07-19T05:20:07","slug":"sha-512t%e3%81%aeiv%e5%88%9d%e6%9c%9f%e5%8c%96%e3%83%99%e3%82%af%e3%83%88%e3%83%ab%e7%94%9f%e6%88%90%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/blog.bitmeister.jp\/?p=4190","title":{"rendered":"SHA-512\/t\u306eIV(\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb)\u751f\u6210\u65b9\u6cd5"},"content":{"rendered":"

\u5143\u3005\u306f\u4e88\u5b9a\u3057\u3066\u3044\u306a\u304b\u3063\u305fSHA\u95a2\u9023\u30cd\u30bf\u3067\u3059\u304c\u3001\u6298\u89d2\u306a\u306e\u3067\u6b8b\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n

SHA\u306e\u4ed5\u69d8\u304c\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308b\u304a\u99b4\u67d3\u307f\u306eFIPS 180-4<\/a>\u306b\u306f\u3001SHA-512\/t\u3068\u3044\u3046SHA-512\u3092\u30d9\u30fc\u30b9\u306b\u3001SHA-512\u306e\u51fa\u529b\u3092\u4efb\u610f\u306et\u30d3\u30c3\u30c8\u306b\u5207\u308a\u8a70\u3081\u308b\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u3064\u3044\u3066\u306e\u8a18\u8ff0\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u305d\u306e\u4e2d\u306bSHA-512\/t\u306eIV(\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3001initialization vector)\u306e\u751f\u6210\u65b9\u6cd5\u3082\u8a18\u8ff0\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u3044\u307e\u3044\u3061\u30d4\u30f3\u3068\u3053\u306a\u304b\u3063\u305f\u306e\u3067\u8abf\u67fb\u3092\u884c\u3044\u307e\u3057\u305f\u3002
\n\u305d\u306e\u8abf\u67fb\u306e\u7d50\u679c\u3092\u3001\u5099\u5fd8\u9332\u4ee3\u308f\u308a\u306b\u6b8b\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n

\u3053\u308c\u3092\u8aad\u3093\u3060\u3042\u306a\u305f\u306f\u3001384\u3092\u9664\u304f\u4efb\u610f\u306et\u30d3\u30c3\u30c8(t<512)\u306e\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u304c\u4f5c\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u306f\u305a\u3067\u3059(\u4f8b\u3048\u3070\u3001SHA-512\/448\u3068\u304b)\u3002\n\n<\/p>\n

FIPS 180-4\u306b\u8a18\u8ff0\u306e\u3042\u308b\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u751f\u6210\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\"IV<\/a><\/p>\n

\u307e\u305f\u3001SHA-512\/224\u3068SHA-512\/256\u3068\u3044\u3046\u627f\u8a8d\u3055\u308c\u305f\u30cf\u30c3\u30b7\u30e5\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306b\u3064\u3044\u3066\u3082\u8a18\u8ff0\u304c\u3042\u308a\u307e\u3059(\u4ed6\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u5fc5\u8981\u6027\u304c\u51fa\u3066\u304d\u305f\u3089\u660e\u8a18\u3055\u308c\u308b\u307f\u305f\u3044\u3067\u3059)\u3002
\n\"SHA-512_224_IV\"<\/a>
\n\"SHA-512_256_IV\"<\/a><\/p>\n

SHA-512\/t IV Generation Function\u306f\u3001\u8981\u306f\u3001SHA-512\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb8\u3064\u305d\u308c\u305e\u308c\u30680xa5a5a5a5a5a5a5a5\u3067\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u3092\u53d6\u3063\u305f\u5024\u3092\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u6301\u3064SHA-512\u306b\u5bfe\u3057\u3066\u3001\u65b0\u3057\u304f\u8ffd\u52a0\u3057\u305f\u3044t\u3092\u6587\u5b57\u5217\u3068\u3057\u3066\u542b\u3080(\u4f8b\u3048\u3070\u3001”SHA-512\/448″)\u6587\u5b57\u5217\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8(512bit)\u3092\u51fa\u529b\u3055\u305b\u3001\u305d\u308c\u3089\u309264bit\u3054\u3068\u306b8\u3064\u306b\u5206\u5272\u3057\u3001SHA-512\/448\u306e8\u3064\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u304c\u8a18\u8ff0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u30fb\u30fb\u30fb\u3002<\/p>\n

\u3061\u3087\u3063\u3068\u4f55\u8a00\u3063\u3066\u3044\u308b\u304b\u5206\u304b\u308a\u307e\u305b\u3093\u306d\u3002<\/p>\n

\u305d\u308c\u3067\u306f\u9806\u756a\u306b\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n

1\uff0eSHA-512\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3068\u306e\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u3092\u5f97\u308b<\/h3>\n

SHA-512\u306e8\u3064\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u30680xa5a5a5a5a5a5a5a5\u3068\u306e\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u3092\u53d6\u3063\u3066\u3001\u51fa\u529b\u3055\u305b\u305f\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n

\r\n$ .\/main\r\ni=[0], h0=0x6a09e667f3bcc908, xor=0xcfac43c256196cad\r\ni=[1], h1=0xbb67ae8584caa73b, xor=0x1ec20b20216f029e\r\ni=[2], h2=0x3c6ef372fe94f82b, xor=0x99cb56d75b315d8e\r\ni=[3], h3=0xa54ff53a5f1d36f1, xor=0xea509ffab89354\r\ni=[4], h4=0x510e527fade682d1, xor=0xf4abf7da08432774\r\ni=[5], h5=0x9b05688c2b3e6c1f, xor=0x3ea0cd298e9bc9ba\r\ni=[6], h6=0x1f83d9abfb41bd6b, xor=0xba267c0e5ee418ce\r\ni=[7], h7=0x5be0cd19137e2179, xor=0xfe4568bcb6db84dc\r\n<\/pre>\n
2\uff0e\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u306e\u7d50\u679c\u3092\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u6301\u3064SHA-512\u306e\u4f5c\u6210<\/h3>\n
GitHub\u304b\u3089\u53d6\u3063\u3066\u304d\u305fopenssl\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3057\u3066\u3001\u30d3\u30eb\u30c9\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u3067\u306fsha\/\u3068\u3044\u3046\u4f5c\u696d\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u914d\u4e0b\u3067\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\r\n$ mkdir sha\r\n$ cd sha\r\n$ git clone https:\/\/github.com\/openssl\/openssl.git\r\n$ cd openssl\/crypto\/sha\/\r\n$ vi sha512.c\r\n<\/pre>\n
SHA512_Init\u95a2\u6570\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n
\r\nint SHA512_Init(SHA512_CTX *c)\r\n{\r\n    \/*\r\n    c->h[0] = U64(0x6a09e667f3bcc908);\r\n    c->h[1] = U64(0xbb67ae8584caa73b);\r\n    c->h[2] = U64(0x3c6ef372fe94f82b);\r\n    c->h[3] = U64(0xa54ff53a5f1d36f1);\r\n    c->h[4] = U64(0x510e527fade682d1);\r\n    c->h[5] = U64(0x9b05688c2b3e6c1f);\r\n    c->h[6] = U64(0x1f83d9abfb41bd6b);\r\n    c->h[7] = U64(0x5be0cd19137e2179);\r\n    *\/\r\n\r\n    c->h[0] = U64(0xcfac43c256196cad);\r\n    c->h[1] = U64(0x1ec20b20216f029e);\r\n    c->h[2] = U64(0x99cb56d75b315d8e);\r\n    c->h[3] = U64(0xea509ffab89354);\r\n    c->h[4] = U64(0xf4abf7da08432774);\r\n    c->h[5] = U64(0x3ea0cd298e9bc9ba);\r\n    c->h[6] = U64(0xba267c0e5ee418ce);\r\n    c->h[7] = U64(0xfe4568bcb6db84dc);\r\n\r\n    c->Nl = 0;\r\n    c->Nh = 0;\r\n    c->num = 0;\r\n    c->md_len = SHA512_DIGEST_LENGTH;\r\n    return 1;\r\n}\r\n<\/pre>\n
\u30d3\u30eb\u30c9\u3057\u307e\u3059\u3002(\u30b3\u30f3\u30d1\u30a4\u30e9\u3084\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u7b49\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u9069\u5b9c\u5165\u308c\u3066\u304f\u3060\u3055\u3044\u3002)<\/p>\n
\r\n$ cd ..\/..\/\r\n$ .\/config\r\n$ make\r\n$ cd ..\r\n<\/pre>\n
3\uff0e\u30e1\u30c3\u30bb\u30fc\u30b8\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u306e\u51fa\u529b<\/h3>\n
2\u3067\u4f5c\u6210\u3057\u305fSHA-512\u306b\u5bfe\u3057\u3066\u3001”SHA-512\/448″\u3068\u3044\u3046\u6587\u5b57\u5217\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u3092\u51fa\u529b\u3055\u305b\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d7\u30ed\u30b0\u30e9\u30e0(\u9069\u5f53\u3067\u3059\u307f\u307e\u305b\u3093\u3002)\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n
\r\n$ vi test.c\r\n#include <stdio.h>\r\n#include <string.h>\r\n#include <openssl\/sha.h>\r\n\r\nint main(int argc, char *argv[])\r\n{\r\n    unsigned char data[] = "SHA-512\/448";\r\n    unsigned char digest[SHA512_DIGEST_LENGTH];\r\n    unsigned char md[SHA512_DIGEST_LENGTH*2+1];\r\n    int i;\r\n\r\n    SHA512((unsigned char*)&data, strlen(data), (unsigned char*)&digest);\r\n    for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {\r\n        sprintf(&md[i*2], "%02x", (unsigned int)digest[i]);\r\n    }\r\n    printf("SHA512 digest: %s\\n", md);\r\n    return 0;\r\n}\r\n<\/pre>\n
\u4f5c\u6210\u3057\u305ftest.c\u3092\u30012\u3067\u4f5c\u6210\u3057\u305f\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u3001\u30ea\u30f3\u30af\u3057\u307e\u3059\u3002<\/p>\n
\r\n$ gcc -o test -I .\/openssl\/include\/ test.c .\/openssl\/libcrypto.a\r\n<\/pre>\n
\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
\r\n$ .\/test\r\nSHA512 digest: 8bdbdbb57b33f2bb54b6d1373964ccb9044d2d381ae3eb763d40619ccc846c46190000505524b786ae6afff7d04167eb12bdbffddbf2e23071a770ebff1126ee\r\n<\/pre>\n
\u51fa\u529b\u3055\u308c\u305f\u3001”8bdbdbb….1126ee”\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u3067\u3059\u3002
\n\u3053\u308c\u309264bit\u3054\u3068(16\u6587\u5b57\u305a\u3064)\u306b\u5206\u5272\u3057\u30018\u3064\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u4f7f\u7528\u3059\u308c\u3070\u3001SHA-512\/t\u306e\u4ed5\u69d8\u306b\u5408\u3063\u305f\u3001SHA-512\/448\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u4eca\u56de\u9069\u5f53\u306b\u4f8b\u306b\u6319\u3052\u305fSHA-512\/448\u3067\u3059\u304c\u3001\u5c06\u6765NIST(\u30a2\u30e1\u30ea\u30ab\u56fd\u7acb\u6a19\u6e96\u6280\u8853\u7814\u7a76\u6240)<\/a>\u304cSHA-512\/448\u304c\u5fc5\u8981\u3060\u3068\u5224\u65ad\u3057\u305f\u5834\u5408\u3001\u305d\u306e\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306f\u3001\u4ee5\u4e0b\u306e\u5185\u5bb9\u3068\u4e00\u81f4\u3059\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
\r\nH0 = 8bdbdbb57b33f2bb\r\nH1 = 54b6d1373964ccb9\r\nH2 = 044d2d381ae3eb76\r\nH3 = 3d40619ccc846c46\r\nH4 = 190000505524b786\r\nH5 = ae6afff7d04167eb\r\nH6 = 12bdbffddbf2e230\r\nH7 = 71a770ebff1126ee\r\n<\/pre>\n
\u5ff5\u306e\u305f\u3081\u3001FIPS 180-4\u306b\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308bSHA-512\/224\u3068SHA-512\/256\u306e\u5024\u3068\u4e00\u81f4\u3059\u308b\u304b\u78ba\u304b\u3081\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
SHA-512\/224<\/h3>\n
\r\n$ .\/test\r\nSHA512 digest: 8c3d37c819544da273e1996689dcd4d61dfab7ae32ff9c82679dd514582f9fcf0f6d2b697bd44da877e36f7304c489423f9d85a86a1d36c81112e6ad91d692a1\r\n<\/pre>\n
64bit\u3054\u3068\u306b8\u3064\u306b\u5206\u3051\u308b\u3068\u3001<\/p>\n
\r\nH0 = 8c3d37c819544da2\r\nH1 = 73e1996689dcd4d6\r\nH2 = 1dfab7ae32ff9c82\r\nH3 = 679dd514582f9fcf\r\nH4 = 0f6d2b697bd44da8\r\nH5 = 77e36f7304c48942\r\nH6 = 3f9d85a86a1d36c8\r\nH7 = 1112e6ad91d692a1\r\n<\/pre>\n
SHA-512\/256<\/h3>\n
\r\n$ .\/test\r\nSHA512 digest: 22312194fc2bf72c9f555fa3c84c64c22393b86b6f53b151963877195940eabd96283ee2a88effe3be5e1e25538639922b0199fc2c85b8aa0eb72ddc81c52ca2\r\n<\/pre>\n
64bit\u3054\u3068\u306b8\u3064\u306b\u5206\u3051\u308b\u3068\u3001<\/p>\n
\r\nH0 = 22312194fc2bf72c\r\nH1 = 9f555fa3c84c64c2\r\nH2 = 2393b86b6f53b151\r\nH3 = 963877195940eabd\r\nH4 = 96283ee2a88effe3\r\nH5 = be5e1e2553863992\r\nH6 = 2b0199fc2c85b8aa\r\nH7 = 0eb72ddc81c52ca2\r\n<\/pre>\n
\u3069\u3061\u3089\u306e\u5834\u5408\u3082\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u306e\u9055\u3044\u306f\u3042\u308c\u3069\u3001\u5024\u306f\u5b8c\u5168\u306b\u4e00\u81f4\u3057\u3066\u3044\u308b\u306e\u3067\u3001SHA-512\/t IV Generation Function\u306e\u7406\u89e3\u306f\u3001\u554f\u984c\u306a\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n
\u3042\u3068\u306f\u3001SHA-512\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u3092448bit\u306b\u5207\u308a\u8a70\u3081\u308b\u51e6\u7406\u3092\u66f8\u3051\u3070\u3001SHA-512\/t\u306e\u4ed5\u69d8\u306b\u6e96\u62e0\u3059\u308bSHA-512\/448\u304c\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002
\n\u3053\u306e\u5185\u5bb9\u3092\u8aad\u3093\u3067\u3084\u3063\u3066\u307f\u3088\u3046\u3068\u3044\u3046\u6c17\u306b\u306a\u3063\u305f\u4eba\u306f\u3001\u662f\u975e\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002
\n <\/p>\n","protected":false},"excerpt":{"rendered":"
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