[{"data":1,"prerenderedAt":250},["ShallowReactive",2],{"navigation_docs":3,"-algorithms-scrypt":148,"-algorithms-scrypt-surround":245},[4,40],{"title":5,"path":6,"stem":7,"children":8,"icon":39},"Guide","\u002Fguide","1.guide\u002F01.index",[9,11,15,19,23,27,31,35],{"title":10,"path":6,"stem":7},"Getting Started",{"title":12,"path":13,"stem":14},"Hashing","\u002Fguide\u002Fhashing","1.guide\u002F02.hashing",{"title":16,"path":17,"stem":18},"HMAC and verify","\u002Fguide\u002Fverify","1.guide\u002F03.verify",{"title":20,"path":21,"stem":22},"Salted KDFs","\u002Fguide\u002Fkdf","1.guide\u002F04.kdf",{"title":24,"path":25,"stem":26},"CLI","\u002Fguide\u002Fcli","1.guide\u002F05.cli",{"title":28,"path":29,"stem":30},"Agents","\u002Fguide\u002Fagents","1.guide\u002F06.agents",{"title":32,"path":33,"stem":34},"Custom algorithms","\u002Fguide\u002Fcustom","1.guide\u002F07.custom",{"title":36,"path":37,"stem":38},"Playground","\u002Fguide\u002Fplayground","1.guide\u002F08.playground","i-lucide-book-open",{"title":41,"path":42,"stem":43,"children":44,"icon":147},"Algorithms","\u002Falgorithms","2.algorithms\u002F00.index",[45,47,51,55,59,63,67,71,75,79,83,87,91,95,99,103,107,111,115,119,123,127,131,135,139,143],{"title":46,"path":42,"stem":43},"Every algorithm",{"title":48,"path":49,"stem":50},"SHA-256","\u002Falgorithms\u002Fsha256","2.algorithms\u002F01.sha256",{"title":52,"path":53,"stem":54},"SHA-384","\u002Falgorithms\u002Fsha384","2.algorithms\u002F02.sha384",{"title":56,"path":57,"stem":58},"SHA-512","\u002Falgorithms\u002Fsha512","2.algorithms\u002F03.sha512",{"title":60,"path":61,"stem":62},"SHA-512Half","\u002Falgorithms\u002Fsha512-half","2.algorithms\u002F04.sha512-half",{"title":64,"path":65,"stem":66},"SHA3-256","\u002Falgorithms\u002Fsha3-256","2.algorithms\u002F05.sha3-256",{"title":68,"path":69,"stem":70},"SHA3-512","\u002Falgorithms\u002Fsha3-512","2.algorithms\u002F06.sha3-512",{"title":72,"path":73,"stem":74},"Keccak-256","\u002Falgorithms\u002Fkeccak256","2.algorithms\u002F07.keccak256",{"title":76,"path":77,"stem":78},"BLAKE2b","\u002Falgorithms\u002Fblake2b","2.algorithms\u002F08.blake2b",{"title":80,"path":81,"stem":82},"BLAKE2b-256","\u002Falgorithms\u002Fblake2b-256","2.algorithms\u002F09.blake2b-256",{"title":84,"path":85,"stem":86},"BLAKE2b-224","\u002Falgorithms\u002Fblake2b-224","2.algorithms\u002F10.blake2b-224",{"title":88,"path":89,"stem":90},"BLAKE2s","\u002Falgorithms\u002Fblake2s","2.algorithms\u002F11.blake2s",{"title":92,"path":93,"stem":94},"BLAKE3","\u002Falgorithms\u002Fblake3","2.algorithms\u002F12.blake3",{"title":96,"path":97,"stem":98},"BLAKE-256","\u002Falgorithms\u002Fblake256","2.algorithms\u002F13.blake256",{"title":100,"path":101,"stem":102},"RIPEMD-160","\u002Falgorithms\u002Fripemd160","2.algorithms\u002F14.ripemd160",{"title":104,"path":105,"stem":106},"HASH160","\u002Falgorithms\u002Fhash160","2.algorithms\u002F15.hash160",{"title":108,"path":109,"stem":110},"HASH256","\u002Falgorithms\u002Fhash256","2.algorithms\u002F16.hash256",{"title":112,"path":113,"stem":114},"MD5","\u002Falgorithms\u002Fmd5","2.algorithms\u002F17.md5",{"title":116,"path":117,"stem":118},"SHA-1","\u002Falgorithms\u002Fsha1","2.algorithms\u002F18.sha1",{"title":120,"path":121,"stem":122},"SHA-0","\u002Falgorithms\u002Fsha0","2.algorithms\u002F19.sha0",{"title":124,"path":125,"stem":126},"CRC-32","\u002Falgorithms\u002Fcrc32","2.algorithms\u002F20.crc32",{"title":128,"path":129,"stem":130},"CRC-16\u002FXMODEM","\u002Falgorithms\u002Fcrc16-xmodem","2.algorithms\u002F21.crc16-xmodem",{"title":132,"path":133,"stem":134},"xxHash (XXH64)","\u002Falgorithms\u002Fxxhash","2.algorithms\u002F22.xxhash",{"title":136,"path":137,"stem":138},"FNV-1a (64-bit)","\u002Falgorithms\u002Ffnv1a","2.algorithms\u002F23.fnv1a",{"title":140,"path":141,"stem":142},"scrypt","\u002Falgorithms\u002Fscrypt","2.algorithms\u002F24.scrypt",{"title":144,"path":145,"stem":146},"PBKDF2","\u002Falgorithms\u002Fpbkdf2","2.algorithms\u002F25.pbkdf2","i-lucide-library",{"id":149,"title":140,"body":150,"description":238,"extension":239,"links":240,"meta":241,"navigation":242,"path":141,"seo":243,"stem":142,"__hash__":244},"docs\u002F2.algorithms\u002F24.scrypt.md",{"type":151,"value":152,"toc":236},"minimark",[153,156,160,214,229,232],[154,155],"algorithm-facts",{"name":140},[157,158,159],"p",{},"scrypt fills a big block of memory and reads it back in an order that depends on the data. That makes it expensive on GPUs and ASICs, which is the whole reason it exists. Litecoin mines with it, and wallets from Ethereum's keystore to BIP38 derive keys with it.",[161,162,167],"pre",{"className":163,"code":164,"language":165,"meta":166,"style":166},"language-ts shiki shiki-themes hashes hashes hashes","create(\"scrypt\").hash(\"password\", { salt: \"4e61436c\", N: 1024, r: 8, p: 16 }).digest;\n\u002F\u002F \"fdbabe1c9d3472007856e7190d01e9fe7c6ad7cbc8237830e77376634b3731622eaf30d92e22a3886ff109279d9830dac727afb94a83ee6d8360cbdfa2cc0640\"\n","ts","",[168,169,170,207],"code",{"__ignoreMap":166},[171,172,175,179,183,187,190,193,195,198,201,204],"span",{"class":173,"line":174},"line",1,[171,176,178],{"class":177},"sK71F","create",[171,180,182],{"class":181},"s38Sx","(",[171,184,186],{"class":185},"shU9J","\"scrypt\"",[171,188,189],{"class":181},").",[171,191,192],{"class":177},"hash",[171,194,182],{"class":181},[171,196,197],{"class":185},"\"password\"",[171,199,200],{"class":181},", { salt: ",[171,202,203],{"class":185},"\"4e61436c\"",[171,205,206],{"class":181},", N: 1024, r: 8, p: 16 }).digest;\n",[171,208,210],{"class":173,"line":209},2,[171,211,213],{"class":212},"scIB-","\u002F\u002F \"fdbabe1c9d3472007856e7190d01e9fe7c6ad7cbc8237830e77376634b3731622eaf30d92e22a3886ff109279d9830dac727afb94a83ee6d8360cbdfa2cc0640\"\n",[157,215,216,217,220,221,224,225,228],{},"That's the second test vector of RFC 7914: ",[168,218,219],{},"NaCl"," as salt, in hex here, because the salt is hex by default. Without a salt, 32 random bytes are drawn and reported in ",[168,222,223],{},"result.options",". Keep them, ",[226,227,20],"a",{"href":21}," has the full story.",[157,230,231],{},"Memory is 128·r·N bytes, 16 MiB at the defaults. The page above computes its sample at N 1024, so the tab doesn't freeze while it renders.",[233,234,235],"style",{},"html pre.shiki code .sK71F, html code.shiki .sK71F{--shiki-light:var(--shiki-token-function);--shiki-default:var(--shiki-token-function);--shiki-dark:var(--shiki-token-function)}html pre.shiki code .s38Sx, html code.shiki .s38Sx{--shiki-light:var(--ui-text-highlighted);--shiki-default:var(--ui-text-highlighted);--shiki-dark:var(--ui-text-highlighted)}html pre.shiki code .shU9J, html code.shiki .shU9J{--shiki-light:var(--shiki-token-string);--shiki-default:var(--shiki-token-string);--shiki-dark:var(--shiki-token-string)}html pre.shiki code .scIB-, html code.shiki .scIB-{--shiki-light:var(--shiki-token-comment);--shiki-default:var(--shiki-token-comment);--shiki-dark:var(--shiki-token-comment)}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":166,"searchDepth":209,"depth":209,"links":237},[],"A memory-hard password KDF. Needs a salt and prints the one it drew and the cost it ran with","md",null,{},true,{"title":140,"description":238},"ROG9D4JjrgWJKIXXYwD4lFs-sVknL__-QMyADwe7INo",[246,248],{"title":136,"path":137,"stem":138,"description":247,"children":-1},"FNV-1a in 64 bits. XOR a byte and multiply by a prime and repeat. For tables and fingerprints",{"title":144,"path":145,"stem":146,"description":249,"children":-1},"HMAC run a few hundred thousand times. The NIST password KDF with a salt and iterations and a choice of hash",1790683657652]