{"id":2720,"date":"2022-12-29T03:26:02","date_gmt":"2022-12-29T03:26:02","guid":{"rendered":"https:\/\/seedsecu.com\/vn\/?p=2720"},"modified":"2022-12-29T04:10:33","modified_gmt":"2022-12-29T04:10:33","slug":"cach-tao-ra-chuoi-24-ky-tu-hat-giong-cua-ledger","status":"publish","type":"post","link":"https:\/\/seedsecu.com\/vn\/cach-tao-ra-chuoi-24-ky-tu-hat-giong-cua-ledger\/","title":{"rendered":"C\u00e1ch t\u1ea1o ra chu\u1ed7i 24 k\u00fd t\u1ef1 h\u1ea1t gi\u1ed1ng c\u1ee7a Ledger"},"content":{"rendered":"

Chu\u1ed7i 24 k\u00fd t\u1ef1 h\u1ea1t gi\u1ed1ng (seedphrase, recovery phrase, mnemonic seeds) l\u00e0 kh\u00f3a master c\u1ee7a v\u00ed. Chu\u1ed7i k\u00fd t\u1ef1 n\u00e0y d\u00e0i v\u00e0 kh\u00f4ng th\u1ec3 n\u00e0o \u0111o\u00e1n ra \u0111\u01b0\u1ee3c.
\nV\u00ec sao l\u1ea1i kh\u00f4ng th\u1ec3 n\u00e0o \u0111o\u00e1n ra \u0111\u01b0\u1ee3c, \u0111i\u1ec1u n\u00e0y c\u00f3 tin t\u01b0\u1edfng \u0111\u01b0\u1ee3c kh\u00f4ng?
\nC\u00f9ng xem l\u1ea1i thu\u1eadt to\u00e1n t\u1ea1o ra chu\u1ed7i 24 k\u00fd t\u1ef1 n\u00e0y l\u00e0 nh\u01b0 th\u1ebf n\u00e0o!<\/p>\n

C\u00f3 nhi\u1ec1u lo\u1ea1i chu\u1ed7i k\u00fd t\u1ef1 h\u1ea1t gi\u1ed1ng, trong \u0111\u00f3 th\u00ec chu\u1ed7i c\u00f3 24 k\u00fd t\u1ef1 th\u00ec c\u00f3 \u0111\u1ed9 an to\u00e0n cao nh\u1ea5t. Ledger s\u1eed d\u1ee5ng BIP-39 Word list<\/a> \u0111\u1ec3 t\u1ea1o ra chu\u1ed7i 24 k\u00fd t\u1ef1 n\u00e0y.
\nBIP-39 word list<\/a> l\u00e0 m\u1ed9t danh s\u00e1ch c\u00e1ch t\u1eeb, bao g\u1ed3m 2048 t\u1eeb. M\u1ed7i t\u1eeb s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t s\u1ed1 th\u1ee9 t\u1ef1. V\u1eady th\u00ec chi ti\u1ebft c\u00e1ch t\u1ea1o ra 24 k\u00fd t\u1ef1 h\u1ea1t gi\u1ed1ng l\u00e0 nh\u01b0 sau:<\/p>\n

V\u00ed l\u1ea1nh Ledger t\u1ea1o chu\u1ed7i 256 bits<\/h2>\n

1. M\u00e1y Ledger t\u1ea1o m\u1ed9t chu\u1ed7i g\u1ed3m 256 bits ng\u1eabu nhi\u00ean b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng tr\u00ecnh t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean th\u1ef1c Random Number Generator (RNG) \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p trong Ph\u1ea7n t\u1eed b\u1ea3o m\u1eadt c\u1ee7a thi\u1ebft b\u1ecb.
\nTr\u00ecnh t\u1ea1o s\u1ed1 ng\u1eabu nhi\u00ean th\u1ef1c (RNG) \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1edfi b\u00ean th\u1ee9 3 v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u1ea3o m\u1eadt cao nh\u1ea5t: EAL5+, AIS-31.<\/p>\n

V\u00ed l\u1ea1nh Ledger t\u1ea1o ra 8 bits ti\u1ebfp theo<\/h2>\n

2. M\u00e3 h\u00f3a SHA c\u00f3 t\u00ean \u0111\u1ea7y \u0111\u1ee7 l\u00e0 Secure Hash Algorithm hay c\u00f2n g\u1ecdi l\u00e0 thu\u1eadt gi\u1ea3i b\u0103m an to\u00e0n. \u0110\u00e2y l\u00e0 t\u1ed5 h\u1ee3p 5 thu\u1eadt gi\u1ea3i b\u0103m m\u1eadt \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi NSA (National Security Agency) \u2013 C\u1ee5c An ninh Qu\u1ed1c gia M\u1ef9 v\u00e0 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n th\u00e0nh chu\u1ea9n c\u1ee7a ch\u00ednh ph\u1ee7 M\u1ef9 b\u1edfi NIST (National Institute of Standards and Technology) \u2013 Vi\u1ec7n C\u00f4ng ngh\u1ec7 v\u00e0 chu\u1ea9n qu\u1ed1c gia M\u1ef9.
\nN\u0103m thu\u1eadt gi\u1ea3i SHA chu\u1ea9n bao g\u1ed3m:
\nSHA-1: Tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 d\u00e0i 160 bit
\nSHA-224: Tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 d\u00e0i 224 bit
\nSHA-256: Tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 d\u00e0i 256 bit
\nSHA-384: Tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 d\u00e0i 384 bit
\nSHA-512: Tr\u1ea3 l\u1ea1i k\u1ebft qu\u1ea3 d\u00e0i 512 bit<\/p>\n

M\u00e1y Ledger s\u1eed d\u1ee5ng 8 bit \u0111\u1ea7u ti\u00ean c\u1ee7a 256 bits tr\u00ean, v\u00e0 d\u00f9ng m\u00e3 h\u00f3a SHA-256 \u0111\u1ec3 t\u1ea1o ra 8 bits v\u00e0 \u0111\u01b0a v\u00e0o cu\u1ed1i c\u1ee7a chu\u1ed7i bit \u1edf (1) \u0111\u1ec3 t\u1ea1o n\u00ean chu\u1ed7i 264 bits.<\/p>\n

V\u00ed l\u1ea1nh chia nh\u00f3m bits t\u1ea1o ra 24 nh\u00f3m<\/h2>\n

3. T\u1ea5t c\u1ea3 264 bits n\u00e0y \u0111\u01b0\u1ee3c c\u1eaft th\u00e0nh 24 nh\u00f3m, m\u1ed7i nh\u00f3m g\u1ed3m 11 bits<\/p>\n

D\u00f9ng 24 nh\u00f3m l\u00e0m ch\u1ec9 m\u1ee5c \u0111\u1ec3 l\u1ea5y ra 24 t\u1eeb trong BIP-39<\/h2>\n

4. M\u1ed7i nh\u00f3m 11 bits n\u00e0y s\u1ebd t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ed9t s\u1ed1 trong ph\u1ea1m vi t\u1eeb 0 – 2047, t\u1eeb s\u1ed1 t\u01b0\u01a1ng \u1ee9ng c\u1ee7a m\u1ed7i nh\u00f3m t\u1ea1o \u0111\u01b0\u1ee3c ch\u1ec9 m\u1ee5c \u0111\u1ec3 l\u1ea5y ra 24 k\u00fd t\u1ef1 t\u1eeb BIP39 word list bitcoin<\/a><\/p>\n

K\u1ebft qu\u1ea3 v\u00e0 checksum<\/h2>\n

K\u1ebft qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh tr\u00ean t\u1ea1o n\u00ean m\u1ed9t b\u1ed9 kh\u00f3a duy nh\u1ea5t trong s\u1ed1 (2 ^ 256 = 115.792.089.237.316.195.423.570.985.008 687.907.853.269.984.665.640.564.039.457.584.007.913.129.639.936) b\u1ed9 kh\u00f3a c\u00f3 th\u1ec3 t\u1ea1o ra. Ch\u00fa \u00fd r\u1eb1ng, 24 k\u00fd t\u1ef1 ch\u01b0a ph\u1ea3i l\u00e0 24 k\u00fd t\u1ef1 cu\u1ed1i c\u00f9ng \u0111\u1ec3 s\u1eed d\u1ee5ng l\u00e0m b\u1ed9 kh\u00f3a. Trong \u0111\u00f3 th\u00ec 23 k\u00fd t\u1ef1 \u0111\u1ea7u \u0111\u01b0\u1ee3c t\u1ea1o ra th\u00ec k\u00fd t\u1ef1 cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb ramdom 3 bits b\u1ea5t k\u1ef3 v\u00e0 s\u1eed d\u1ee5ng 8 bits l\u1ea5y ra b\u1eb1ng c\u00e1ch d\u00f9ng SHA-256 hash. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 t\u1eeb cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 m\u1ed9t t\u1ed5ng ki\u1ec3m tra – n\u1ebfu b\u1ea1n nh\u1eadp m\u1ed9t t\u1eeb g\u1ed1c kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0o thi\u1ebft b\u1ecb trong khi kh\u00f4i ph\u1ee5c n\u00f3, th\u00ec thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng t\u1eeb g\u1ed1c \u0111\u00e3 nh\u1eadp kh\u00f4ng h\u1ee3p l\u1ec7.<\/p>\n

Ki\u1ebfn th\u1ee9c t\u1ed5ng h\u1ee3p t\u1eeb ngu\u1ed3n: Ledger Developer Document<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Chu\u1ed7i 24 k\u00fd t\u1ef1 h\u1ea1t gi\u1ed1ng (seedphrase, recovery phrase, mnemonic seeds) l\u00e0 kh\u00f3a master c\u1ee7a v\u00ed. Chu\u1ed7i k\u00fd t\u1ef1 n\u00e0y d\u00e0i v\u00e0 kh\u00f4ng th\u1ec3 n\u00e0o \u0111o\u00e1n ra \u0111\u01b0\u1ee3c. V\u00ec sao l\u1ea1i kh\u00f4ng th\u1ec3 n\u00e0o \u0111o\u00e1n ra \u0111\u01b0\u1ee3c, \u0111i\u1ec1u n\u00e0y c\u00f3 tin t\u01b0\u1edfng \u0111\u01b0\u1ee3c kh\u00f4ng? C\u00f9ng xem l\u1ea1i thu\u1eadt to\u00e1n t\u1ea1o ra chu\u1ed7i 24 k\u00fd t\u1ef1 <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[82],"tags":[],"yoast_head":"\nC\u00e1ch t\u1ea1o ra chu\u1ed7i 24 k\u00fd t\u1ef1 h\u1ea1t gi\u1ed1ng c\u1ee7a Ledger - V\u00ed C\u1ee9ng Seedsecu<\/title>\n<meta name=\"description\" content=\"V\u00ed l\u1ea1nh Ledger t\u1ea1o ra 24 chu\u1ed7i k\u00fd t\u1ef1 nh\u01b0 th\u1ebf n\u00e0o? 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