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yass id:yass

hashã«é–¢ã™ã‚‹yassã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (114)

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Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? ã€Œãƒãƒƒã‚·ãƒ¥å€¤ã®è¡çªã€ï¼ˆã‚³ãƒªã‚¸ãƒ§ãƒ³ï¼‰ã‚„ã€Œãƒ‡ãƒ¼ã‚¿ã®æ”¹ã–ã‚“ã€ãªã©ã®å¯¾ç–ã§ã€ãƒ™ã‚¹ãƒˆãªãƒãƒƒã‚·ãƒ¥ãƒ»ã‚¢ãƒ«ã‚´ãƒªãƒ ã‚’åˆ¤æ–ã™ã‚‹ãŸã‚ã«ã€ãƒãƒƒã‚·ãƒ¥å€¤ã®ã€Œé•·ã•ã€ã‚„ã€Œé€Ÿåº¦ã®ç›®å®‰ã€ä¸€è¦§ãŒæ¬²ã—ã„ã€‚ ãƒ ... ... ãƒãƒƒã‚·ãƒ¥ï¼Ÿ ... ã£ã¦ã‹ã€ãƒãƒƒã‚·ãƒ¥ã£ã¦ã€ãã‚“ãªã«ãŠã„ã—ã„ã®ï¼Ÿåœ§ç¸®ã•ã‚ŒãŸæš—å·ã¨ã¡ã‚ƒã†ã‚“ï¼Ÿ TL; DR ï¼ˆä»ŠåŒ—ç”£æ¥ï¼‰ ã“ã®è¨˜äº‹ã¯ãƒãƒƒã‚·ãƒ¥é–¢æ•°ã®å‡ºåŠ›çµæžœã‚’æ¡æ•°ã”ã¨ã«ã€ã¾ã¨ã‚ãŸã‚‚ã®ã§ã™ã€‚ ãƒãƒƒã‚·ãƒ¥é–¢æ•°ã®å„ã€…ã®ã€Œã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ãŒæœ€å¤§ä½•æ–‡å—ãƒ»ãƒ»ã® 16 é€²æ•°ã§è¿”ã—ã¦ãã‚‹ã‹ã€ã®äº‹å‰ç¢ºèªã«åˆ©ç”¨ãã ã•ã„ã€‚ ãƒžã‚¹ã‚¿ãƒ¼ã€ä¸€ç•ªå¼·ã„ãƒ¤ãƒ„ã‚’ãã‚Œã€‚ ãƒãƒ©ãƒ³ã‚¹å„ªå…ˆ ðŸ‘‰ sha3-5
yass 2019/11/13
hash
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Writing a hash function in Java: guide to implementing hashCode()
yass 2018/08/18
hash

xor
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Sqids (formerly Hashids) Â· Generate Short Unique IDs
What is Sqids? Sqids (pronounced "squids") is an open-source library that lets you generate short unique identifiers from numbers. These IDs are URL-safe, can encode several numbers, and do not contain common profanity words. Read more . This is what they look like: Use Cases The main use of Sqids is purely visual. If you'd like to use IDs instead of numbers in your project, Sqids could be a good
yass 2018/06/07
id

hash

hashids
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xxHash - a hash algorithm as fast as memcpy
yass 2017/07/22
xxhash

hash
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Faster hashing without effort â€“ Daniel Lemire's blog
yass 2017/07/16
hash

java

superscalar
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Pusher | Leader In Realtime Technologies
Â© 2024 Pusher Ltd. All rights reserved. Pusher Limited is a company registered in England and Wales (No. 07489873) whose registered office is at MessageBird UK Limited, 3 More London Riverside, 4th Floor, London, United Kingdom, SE1 2AQ.
yass 2017/06/28
redis

hash

Linked List
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ãƒãƒƒã‚·ãƒ¥ã¨æš—å·ã¯é•ã†ãžï¼ / Do not confuse hashes and ciphers.
PHPå‹‰å¼·ä¼š#110ã§ã®ç™ºè¡¨è³‡æ–™ã§ã™ã€‚
yass 2017/02/01
hash
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Reddit - Dive into anything
ï¿½×»8ï¿½U Get the Reddit app Scan this QR code to download the app now Or check it out in the app stores
yass 2016/11/30
hash
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é«˜é€Ÿãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ â€“ YOSBITS
ã“ã®è¨˜äº‹ã¯ç‰¹ã«é«˜é€Ÿãªãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã‚’ã¾ã¨ã‚ãŸè³‡æ–™ã§ã™ã€‚ æš—å·çš„ãªå¼·åº¦ãŒé‡è¦ã§ãªã„å ´åˆã«ä½¿ç”¨ã§ãã‚‹ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¨æš—å·å¼·åº¦ãŒè€ƒæ…®ã•ã‚ŒãŸã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ãŒã‚ã‚Šãƒãƒƒã‚·ãƒ¥é–¢æ•°ã®åˆ©ç”¨ç’°å¢ƒã‚ã‚ã›ã¦æ¤œè¨Žã™ã¹ãã§ã‚ã‚‹ã€‚ã¾ãŸã€å®Ÿè¡Œé€Ÿåº¦ã¯å®Ÿè¡Œç’°å¢ƒã«ä¾å˜ã™ã‚‹ã®ã§å®Ÿéš›ã®å®Ÿè¡Œç’°å¢ƒã§å®Ÿæ¸¬ã—ã¦åˆ¤æ–ã™ã‚‹ã¹ãã§ã‚ã‚‹ã€‚ MurmurHash 2008å¹´ã«â€Austin Applebyâ€ãŒè€ƒæ¡ˆã—ãŸéžæš—å·ãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªãƒ ã§ã™ã€‚ã“ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã¯æš—å·åŒ–å‡¦ç†ãªã©ã«å‘ã„ã¦ã„ãªã„ã€‚MurmurHash3 ã¯ç¾åœ¨ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã€32ãƒ“ãƒƒãƒˆã¾ãŸã¯128ãƒ“ãƒƒãƒˆã®ãƒãƒƒã‚·ãƒ¥ã‚’ç”Ÿæˆã™ã‚‹ã€‚MurmurHash2 ã¯å¤ã„ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã€32ãƒ“ãƒƒãƒˆã¾ãŸã¯64ãƒ“ãƒƒãƒˆã®ãƒãƒƒã‚·ãƒ¥ã‚’ç”Ÿæˆã™ã‚‹ã€‚64ãƒ“ãƒƒãƒˆã®ãƒãƒƒã‚·ãƒ¥å€¤ç”Ÿæˆã™ã‚‹ã‚½ãƒ¼ã‚¹ã«ã¯2ã¤ã®å¤‰ç¨®ãŒã‚ã‚‹ã€‚64ãƒ“ãƒƒãƒˆãƒ—ãƒã‚»ãƒƒã‚µç”¨ã«æœ€é©åŒ–ã•ã‚ŒãŸç”¨ã® MurmurHash64A ã¨32ãƒ“ãƒƒãƒˆãƒ—ãƒã‚»ãƒƒã‚µç”¨ã«æœ€é©åŒ–ã•ã‚ŒãŸ Mu
yass 2016/06/23
hash

murmur

cityhash

SipHash

xxhash

FarmHash
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GitHub - benalexau/hash-bench: Java Hashing, CRC and Checksum Benchmark (JMH)
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yass 2015/12/19
java

hash

benchmark
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MetroHash: Faster, Better Hash Functions Â· J. Andrew Rogers
MetroHash: Faster, Better Hash Functions 27 May 2015 MetroHash is a set of state-of-the-art hash functions for non-cryptographic use cases. They are notable for being algorithmically generated in addition to their exceptional performance. Get the source here. The set of published hash functions may expand in the future. Fastest general-purpose algorithms for bulk hashing Fastest general-purpose al
yass 2015/12/06
hash
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How does a HashMap work in JAVA | Coding Geek
Most JAVA developers are using Maps and especially HashMaps. A HashMap is a simple yet powerful way to store and get data. But how many developers know how a HashMap works internally? A few daysÂ ago, Iâ€™ve read a huge part of the source code of java.util.HashMap (in Java 7 then Java 8) in order to have a deepÂ understanding of this fundamental data structure. In this post, Iâ€™ll explain the implement
yass 2015/08/23
hash

hashmap

java
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#JJUG - Java ã§æœ€é€Ÿã®ãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã‚’æ±‚ã‚ã¦
ã€æ±äº¬ã€‘ã€è´è¬›è€…å‹Ÿé›†ã€‘JJUG ãƒŠã‚¤ãƒˆãƒ»ã‚»ãƒŸãƒŠãƒ¼ ã€Œãƒ“ãƒ¼ãƒ«ç‰‡æ‰‹ã«LT&ç´æ¶¼ä¼šã€ã®ç™ºè¡¨è³‡æ–™ã§ã™ã€‚ https://jjug.doorkeeper.jp/events/28182
yass 2015/08/11
hash

murmur

xxhash

unsafe
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GitHub - yomorun/hashids-java: Hashids algorithm v1.0.0 implementation in Java
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yass 2015/06/24
" A small Java class to generate YouTube-like hashes from one or many numbers. "

java

id

hash
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ã€Java SE 8é™å®šã€‘å®‰å…¨ãªãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’ç”Ÿæˆã™ã‚‹æ–¹æ³• | Casley Deep Innovationsæ ªå¼ä¼šç¤¾ æŠ€è¡“ãƒ–ãƒã‚°
ã“ã‚“ã«ã¡ã¯ã€‚SIéƒ¨ã®æº€çŸ³ã§ã™ã€‚ ä»Šå›žã¯Java SE 8é™å®šã¨ãªã‚Šã¾ã™ãŒã€å®‰å…¨ãªãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’ç”Ÿæˆã™ã‚‹æ–¹æ³•ã«ã¤ã„ã¦ã”ç´¹ä»‹ã—ã¾ã™ã€‚ å®‰å…¨ãªãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã®æœ€å°é™ã®è¦ä»¶ ä»Šå¹´ã®ãƒ™ãƒãƒƒã‚»ã®æƒ…å ±æ¼æ´©äº‹ä»¶ã¯ã¾ã è¨˜æ†¶ã«æ–°ã—ã„ã¨æ€ã„ã¾ã™ã—ã€ã‚ã¾ã‚Šå¤§ããå–ã‚Šä¸Šã’ã‚‰ã‚Œã¦ã„ãªã„ã‚ˆã†ã§ã™ãŒæœ€è¿‘500ä¸‡ä»¶ã®Gmailã®ã‚¢ã‚«ã‚¦ãƒ³ãƒˆæƒ…å ±ãŒæµå‡ºã—ãŸã‚‰ã—ãã€ãŠãã‚‰ããã®å½±éŸ¿ã§æ§˜ã€…ãªã‚µã‚¤ãƒˆã§ãªã‚Šã™ã¾ã—ãƒã‚°ã‚¤ãƒ³ãŒç™ºç”Ÿã—ã¦ã„ã‚‹ã‚ˆã†ã§ã™ã€‚ã“ã®ã‚ˆã†ãªä¾‹ã‚‚ã‚ã‚Šã€ã“ã“æ•°å¹´ã§å€‹äººæƒ…å ±ã‚’å®ˆã‚‹ãŸã‚ã«ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ãŒã©ã‚“ã©ã‚“é‡è¦è¦–ã•ã‚Œã‚‹ã‚ˆã†ã«ãªã£ã¦ãã¦ã„ã¾ã™ã€‚ ã‚‚ã¯ã‚„ã‚·ã‚¹ãƒ†ãƒ ã‚’è¨è¨ˆã™ã‚‹ã«ã‚ãŸã£ã¦ã€SQLã‚¤ãƒ³ã‚¸ã‚§ã‚¯ã‚·ãƒ§ãƒ³ã€XSS(ã‚¯ãƒã‚¹ã‚µã‚¤ãƒˆã‚¹ã‚¯ãƒªãƒ—ãƒ†ã‚£ãƒ³ã‚°)ã€CSRF(ã‚¯ãƒã‚¹ã‚µã‚¤ãƒˆãƒªã‚¯ã‚¨ã‚¹ãƒˆãƒ•ã‚©ãƒ¼ã‚¸ã‚§ãƒª)ã®ã‚ˆã†ãªä»£è¡¨çš„ãªè„†å¼±æ€§ã«ã¤ã„ã¦å¯¾å¿œã™ã‚‹ã“ã¨ã¯å½“ãŸã‚Šå‰ã«ãªã£ã¦ã„ã‚‹ã®ã§ã¯ãªã„ã§ã—ã‚‡ã†ã‹ã€‚ ã—ã‹ã—ãªãŒã‚‰ã€ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’ä¿å˜ã™ã‚‹ã¨ã„ã†ã“ã¨ã«ã¤ã„ã¦ã¯ã€ã¨ã‚Š
yass 2015/05/13
java

password

hash
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Fast Compact Sparse Bit Sets
Imagine you need a relatively compact data structure for quickly checking membership of mostly-consecutive non-negative integers. (If this sounds really specific, it is because it is precisely what I needed for a particular project.) The Ruby standard library contains a Set class which may be a good starting point. Set is actually implemented as a Hash with the Set elements as keys and true as the
yass 2015/01/14
bit

hash

bitset
ãƒªãƒ³ã‚¯
GitHub - OpenHFT/Zero-Allocation-Hashing: Zero-allocation hashing for Java
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yass 2014/12/28
hash

murmur

cityhash
ãƒªãƒ³ã‚¯
A Fast, Minimal Memory, Consistent Hash Algorithm ã”ç´¹ä»‹(ã‚·ã‚¹ãƒ†ãƒ ç³»è«–æ–‡ç´¹ä»‹ Advent Calendar 2014ï¼‰. - Qiita
(æœ¬ç¨¿ã¯, ã‚·ã‚¹ãƒ†ãƒ ç³»è«–æ–‡ç´¹ä»‹ Advent Calendar 2014, 12/20 ã§ã™ http://www.adventar.org/calendars/440) è«–æ–‡ã¯ arXiv ã‹ã‚‰å–å¾—ã§ãã¾ã™. http://arxiv.org/abs/1406.2294 Jump Consitent Hash ã¨å‘¼ã°ã‚Œã‚‹, åˆ†æ•£ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ç³»ã§æœ‰ç›Šãªãƒãƒƒã‚·ãƒ¥é–¢æ•°ã‚’æ±‚ã‚ã‚‹ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã§ã™. ç¾åœ¨å²ä¸Šæœ€å¼·ã®ãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®ã²ã¨ã¤ã¨è¨€ãˆã‚‹ã§ã—ã‚‡ã†. ç„¡æ€§ã«åˆ†æ•£ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ä½œã‚ŠãŸããªã£ã¦ãã¾ã™ã! å…±è‘—è€…ã® Eric Veach ã«ã‚‚æ³¨ç›®ã§ã™. Google ã‚’æ•‘ã£ãŸã¨è¨€ã‚ã‚Œã¦ã„ã‚‹ distinguished engineer ã§ã™. (G ç¤¾ã®ã²ã¨ã¯å½¼ã®åå‰ã‚’ç¤¾å“¡åç°¿ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹? ã‹ã‚‰æŽ¢ã—ã¦ã¿ã¾ã—ã‚‡ã†! ç¤¾å“¡ç•ªå· 20 ãã‚‰ã„ã«ã‚ã‚‹ã‚‰ã—ã„ã§ã™ã‚ˆ!) ãã‚“ãªå½¼ãŒãªã‚“ã¨ 10 å¹´ä»¥
yass 2014/12/23
" æœ€åˆã® 10 å€‹ã®ãƒã‚±ãƒƒãƒˆã«ã‚ã£ãŸ 1/6 ã®ãƒ‡ãƒ¼ã‚¿ã®ã¿ãŒ, æ–°ã—ã„ 2 å€‹ã®ãƒã‚±ãƒƒãƒˆã«ç§»å‹•ã—(1/6 = 12/(12-10)), æ®‹ã‚Šã¯å…ƒã€…ã®ãƒã‚±ãƒƒãƒˆç•ªå·ã®å ´æ‰€ã«ã¨ã©ã¾ã£ã¦ã»ã—ã„ã§ã™ã. / ã“ã®ã‚ˆã†ãªç‰¹æ€§ãŒå‡ºã‚‹ã‚ˆã†ãªãƒãƒƒã‚·ãƒ¥ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ "

hash

consistent hashing
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æš—å·åŒ–ã¨ç½²åã¯å¯¾ç§°ã˜ã‚ƒãªã„ã‚ˆã¨ã„ã†è©± - ã¾ã¡ã‚…ãƒ€ã‚¤ã‚¢ãƒªãƒ¼ (2008-03-02)
yass 2014/11/24
hash

rsa

ssl
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Javaã§ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’ãƒãƒƒã‚·ãƒ¥åŒ–ã™ã‚‹ã®ã«è‰¯ã„æ–¹æ³•ã‚’èª¿ã¹ã¦ã¿ãŸ - Qiita
Javaã§ãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã‚’ãƒãƒƒã‚·ãƒ¥åŒ–ã™ã‚‹ã®ã«è‰¯ã„æ–¹æ³•ã‚’èª¿ã¹ãŸã®ã§ãƒ¡ãƒ¢ã—ã¦ãŠã è¦ä»¶ãƒ»æ–¹é‡ å¿…è¦ãªå…¨æƒ…å ±ãŒæ”»æ’ƒè€…ã®æ‰‹ã«å…¥ã£ã¦ã‚ªãƒ•ãƒ©ã‚¤ãƒ³ã§è§£æžã•ã‚Œã¦ã‚‚å›°ã‚‰ãªã„ã€‚ å¼·åŠ›ãªHASHé–¢æ•°ã¨ã€ã‚¢ã‚«ã‚¦ãƒ³ãƒˆæ¯Žã«é•ã†Saltã€ãã—ã¦ã‚¹ãƒˆãƒ¬ãƒƒãƒãƒ³ã‚°ãŒå¿…è¦ã€‚ Saltã¯HASHåŒ–ã•ã‚ŒãŸãƒ‘ã‚¹ãƒ¯ãƒ¼ãƒ‰ã¨ä¸€ç·’ã«ä¿ç®¡ã—ã¦OK Saltã¨ã‚¹ãƒˆãƒ¬ãƒƒãƒãƒ³ã‚°ã®å‡¦ç†ã¯ã€ç‹¬è‡ªå®Ÿè£…ã§ã¯ãªãæ—¢å˜ã®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®æ—¢å˜å®Ÿè£…ä½¿ã† PBKDF2 ã¨ã‹ Bcrypt, Scrypt ãªã©ã€‚ JCA(Java Cryptography Architecture) ãŒåˆ©ç”¨å‡ºæ¥ã‚‹ãªã‚‰æœ€å–„ã ã‚ã†ã€‚ãã†ã§ãªã‘ã‚Œã°è‘—åãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ç‰©ã‚’ä½¿ã„ãŸã„ å‚è€ƒ http://www.f-secure.com/weblog/archives/00002095.html æ—¥æœ¬èªžè¨³ï¼šhttp://blog.f-secure.jp/archives/50564743.htm *ã€Œ
yass 2014/09/24
java

hash

password

hmac

bcrypt

PBKDF2
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