{"id":2833,"date":"2025-06-06T15:12:19","date_gmt":"2025-06-06T15:12:19","guid":{"rendered":"https:\/\/diznr.com\/?p=2833"},"modified":"2025-06-06T15:12:19","modified_gmt":"2025-06-06T15:12:19","slug":"network-security-secure-hashing-algorithm-1-or-sha1-algorithm-attack-in-network-computer-security","status":"publish","type":"post","link":"https:\/\/www.reilsolar.com\/pdf\/network-security-secure-hashing-algorithm-1-or-sha1-algorithm-attack-in-network-computer-security\/","title":{"rendered":"Network Security Secure hashing Algorithm 1 or SHA1 algorithm Attack in network Security Computer"},"content":{"rendered":"<p>Network Security Secure hashing Algorithm 1 or SHA1 algorithm Attack in network Security Computer<\/p>\n<p>[fvplayer id=&#8221;135&#8243;]<\/p>\n<h3 data-start=\"0\" data-end=\"89\"><strong data-start=\"7\" data-end=\"87\">Network Security: Secure Hashing Algorithm 1 (SHA-1) and Its Vulnerabilities<\/strong><\/h3>\n<h3 data-start=\"96\" data-end=\"122\"><strong data-start=\"102\" data-end=\"120\">What is SHA-1?<\/strong><\/h3>\n<p data-start=\"123\" data-end=\"336\">SHA-1 (<strong data-start=\"130\" data-end=\"160\">Secure Hashing Algorithm 1<\/strong>) is a cryptographic hash function developed by the <strong data-start=\"212\" data-end=\"246\">National Security Agency (NSA)<\/strong> and published by the <strong data-start=\"268\" data-end=\"325\">National Institute of Standards and Technology (NIST)<\/strong> in 1993.<\/p>\n<ul data-start=\"338\" data-end=\"542\">\n<li data-start=\"338\" data-end=\"385\"><strong data-start=\"340\" data-end=\"350\">Input:<\/strong> Any message of arbitrary length.<\/li>\n<li data-start=\"386\" data-end=\"439\"><strong data-start=\"388\" data-end=\"399\">Output:<\/strong> A fixed 160-bit (20-byte) hash value.<\/li>\n<li data-start=\"440\" data-end=\"542\"><strong data-start=\"442\" data-end=\"454\">Purpose:<\/strong> Used in digital signatures, certificates, integrity verification, and authentication.<\/li>\n<\/ul>\n<h3 data-start=\"549\" data-end=\"581\"><strong data-start=\"555\" data-end=\"579\">How Does SHA-1 Work?<\/strong><\/h3>\n<ol data-start=\"582\" data-end=\"952\">\n<li data-start=\"582\" data-end=\"672\"><strong data-start=\"585\" data-end=\"605\">Message Padding:<\/strong> The message is padded to make its length a multiple of 512 bits.<\/li>\n<li data-start=\"673\" data-end=\"747\"><strong data-start=\"676\" data-end=\"695\">Initialization:<\/strong> Uses five 32-bit variables to initialize buffers.<\/li>\n<li data-start=\"748\" data-end=\"890\"><strong data-start=\"751\" data-end=\"766\">Processing:<\/strong> The padded message is divided into 512-bit blocks, processed in 80 rounds using logical functions and bitwise operations.<\/li>\n<li data-start=\"891\" data-end=\"952\"><strong data-start=\"894\" data-end=\"909\">Final Hash:<\/strong> Produces a 160-bit (20-byte) hash value.<\/li>\n<\/ol>\n<h3 data-start=\"959\" data-end=\"993\"><strong data-start=\"965\" data-end=\"991\">Applications of SHA-1:<\/strong><\/h3>\n<ul data-start=\"994\" data-end=\"1187\">\n<li data-start=\"994\" data-end=\"1037\"><strong data-start=\"996\" data-end=\"1035\">Digital certificates and signatures<\/strong><\/li>\n<li data-start=\"1038\" data-end=\"1088\"><strong data-start=\"1040\" data-end=\"1061\">SSL\/TLS protocols<\/strong> for secure communication<\/li>\n<li data-start=\"1089\" data-end=\"1129\"><strong data-start=\"1091\" data-end=\"1118\">Version control systems<\/strong> like Git<\/li>\n<li data-start=\"1130\" data-end=\"1187\"><strong data-start=\"1132\" data-end=\"1152\">Password hashing<\/strong> (though considered insecure now)<\/li>\n<\/ul>\n<h3 data-start=\"1194\" data-end=\"1240\"><strong data-start=\"1200\" data-end=\"1238\">SHA-1 Attacks and Vulnerabilities:<\/strong><\/h3>\n<h3 data-start=\"1241\" data-end=\"1271\"><strong data-start=\"1245\" data-end=\"1269\">1. Collision Attack:<\/strong><\/h3>\n<ul data-start=\"1272\" data-end=\"1527\">\n<li data-start=\"1272\" data-end=\"1354\">A <strong data-start=\"1276\" data-end=\"1289\">collision<\/strong> occurs when two different inputs produce the same hash output.<\/li>\n<li data-start=\"1355\" data-end=\"1527\">In <strong data-start=\"1360\" data-end=\"1368\">2017<\/strong>, <strong data-start=\"1370\" data-end=\"1380\">Google<\/strong> and <strong data-start=\"1385\" data-end=\"1402\">CWI Amsterdam<\/strong> successfully demonstrated a <strong data-start=\"1431\" data-end=\"1450\">SHA-1 collision<\/strong> known as the <strong data-start=\"1464\" data-end=\"1484\">SHAttered Attack<\/strong>, proving that SHA-1 is no longer secure.<\/li>\n<\/ul>\n<h3 data-start=\"1529\" data-end=\"1558\"><strong data-start=\"1533\" data-end=\"1556\">2. Birthday Attack:<\/strong><\/h3>\n<ul data-start=\"1559\" data-end=\"1805\">\n<li data-start=\"1559\" data-end=\"1659\">Based on the <strong data-start=\"1574\" data-end=\"1594\">Birthday Paradox<\/strong>, where the probability of a collision is higher than expected.<\/li>\n<li data-start=\"1660\" data-end=\"1805\">For a 160-bit hash like SHA-1, a collision can be found with approximately <strong data-start=\"1737\" data-end=\"1754\">2^80 attempts<\/strong>, which is feasible for powerful computing systems.<\/li>\n<\/ul>\n<h3 data-start=\"1807\" data-end=\"1844\"><strong data-start=\"1811\" data-end=\"1842\">3. Length Extension Attack:<\/strong><\/h3>\n<ul data-start=\"1845\" data-end=\"1975\">\n<li data-start=\"1845\" data-end=\"1975\">Attackers can append data to a message without invalidating its hash if they know the hash and length of the original message.<\/li>\n<\/ul>\n<h3 data-start=\"1982\" data-end=\"2031\"><strong data-start=\"1988\" data-end=\"2029\">Why Is SHA-1 Considered Insecure Now?<\/strong><\/h3>\n<ul data-start=\"2032\" data-end=\"2288\">\n<li data-start=\"2032\" data-end=\"2112\">Increased <strong data-start=\"2044\" data-end=\"2067\">computational power<\/strong> has made collision attacks more practical.<\/li>\n<li data-start=\"2113\" data-end=\"2197\">Modern hash functions like <strong data-start=\"2142\" data-end=\"2153\">SHA-256<\/strong> and <strong data-start=\"2158\" data-end=\"2167\">SHA-3<\/strong> are considered more secure.<\/li>\n<li data-start=\"2198\" data-end=\"2288\">Most web browsers, operating systems, and cybersecurity protocols have deprecated SHA-1.<\/li>\n<\/ul>\n<h3 data-start=\"2295\" data-end=\"2329\"><strong data-start=\"2301\" data-end=\"2327\">Mitigation Strategies:<\/strong><\/h3>\n<ol data-start=\"2330\" data-end=\"2728\">\n<li data-start=\"2330\" data-end=\"2423\"><strong data-start=\"2333\" data-end=\"2368\">Transition to SHA-256 or SHA-3:<\/strong> Use stronger hashing algorithms for better security.<\/li>\n<li data-start=\"2424\" data-end=\"2536\"><strong data-start=\"2427\" data-end=\"2483\">Implement HMAC (Hashed Message Authentication Code):<\/strong> Reduces vulnerability to length extension attacks.<\/li>\n<li data-start=\"2537\" data-end=\"2626\"><strong data-start=\"2540\" data-end=\"2556\">Use Salting:<\/strong> Add random data to inputs before hashing to reduce collision risks.<\/li>\n<li data-start=\"2627\" data-end=\"2728\"><strong data-start=\"2630\" data-end=\"2658\">Regular Security Audits:<\/strong> Continuously monitor systems and protocols to prevent exploitation.<\/li>\n<\/ol>\n<h3 data-start=\"2735\" data-end=\"2758\"><strong data-start=\"2741\" data-end=\"2756\">Conclusion:<\/strong><\/h3>\n<p data-start=\"2759\" data-end=\"2994\">SHA-1 played a crucial role in early cryptographic security but is no longer reliable due to successful collision attacks. Transitioning to more secure hashing algorithms is recommended to maintain data integrity and confidentiality.<\/p>\n<p data-start=\"3001\" data-end=\"3104\" data-is-last-node=\"\" data-is-only-node=\"\">Would you like more information on any specific aspect or need help with practical implementation?<\/p>\n<h3 data-start=\"3001\" data-end=\"3104\"><a href=\"https:\/\/engineering.purdue.edu\/kak\/compsec\/NewLectures\/Lecture15.pdf\" target=\"_blank\" rel=\"noopener\">Network Security Secure hashing Algorithm 1 or SHA1 algorithm Attack in network Security Computer<\/a><\/h3>\n<h3 class=\"LC20lb MBeuO DKV0Md\"><a href=\"https:\/\/www.vssut.ac.in\/lecture_notes\/lecture1428550736.pdf\" target=\"_blank\" rel=\"noopener\">cryptography and network security lecture notes<\/a><\/h3>\n<h3 class=\"LC20lb MBeuO DKV0Md\"><a href=\"https:\/\/www.net.in.tum.de\/fileadmin\/TUM\/teaching\/netzsicherheit\/ws1011\/02_3_CryptoHashFunctions_2up.pdf\" target=\"_blank\" rel=\"noopener\">Network Security &#8211; Chapter 2 Basics 2.3 Cryptographic<\/a><\/h3>\n<p data-start=\"0\" data-end=\"138\">Here is a detailed explanation of <strong data-start=\"34\" data-end=\"69\">SHA-1 (Secure Hash Algorithm 1)<\/strong> and the <strong data-start=\"78\" data-end=\"98\">attacks on SHA-1<\/strong> in the context of <strong data-start=\"117\" data-end=\"137\">Network Security<\/strong>.<\/p>\n<hr data-start=\"140\" data-end=\"143\" \/>\n<h3 data-start=\"145\" data-end=\"218\">\ud83d\udd10 Network Security: Secure Hashing Algorithm 1 (SHA-1) and Its Attacks<\/h3>\n<hr data-start=\"220\" data-end=\"223\" \/>\n<h2 data-start=\"225\" data-end=\"245\">\ud83d\udcd8 What is SHA-1?<\/h2>\n<p data-start=\"247\" data-end=\"432\"><strong data-start=\"247\" data-end=\"256\">SHA-1<\/strong> stands for <strong data-start=\"268\" data-end=\"295\">Secure Hash Algorithm 1<\/strong>, developed by the <strong data-start=\"314\" data-end=\"321\">NSA<\/strong> (National Security Agency) in 1995 and published by <strong data-start=\"374\" data-end=\"382\">NIST<\/strong> (National Institute of Standards and Technology).<\/p>\n<p data-start=\"434\" data-end=\"541\">It belongs to the <strong data-start=\"452\" data-end=\"498\">SHA family of cryptographic hash functions<\/strong>, including SHA-0, SHA-1, SHA-2, and SHA-3.<\/p>\n<hr data-start=\"543\" data-end=\"546\" \/>\n<h2 data-start=\"548\" data-end=\"572\">\ud83d\udd39 Features of SHA-1:<\/h2>\n<div class=\"_tableContainer_16hzy_1\">\n<div class=\"_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"574\" data-end=\"919\">\n<thead data-start=\"574\" data-end=\"608\">\n<tr data-start=\"574\" data-end=\"608\">\n<th data-start=\"574\" data-end=\"593\" data-col-size=\"sm\">Property<\/th>\n<th data-start=\"593\" data-end=\"608\" data-col-size=\"md\">Description<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"644\" data-end=\"919\">\n<tr data-start=\"644\" data-end=\"686\">\n<td data-start=\"644\" data-end=\"663\" data-col-size=\"sm\">Hash Length<\/td>\n<td data-col-size=\"md\" data-start=\"663\" data-end=\"686\">160 bits (20 bytes)<\/td>\n<\/tr>\n<tr data-start=\"687\" data-end=\"731\">\n<td data-start=\"687\" data-end=\"706\" data-col-size=\"sm\">Input<\/td>\n<td data-start=\"706\" data-end=\"731\" data-col-size=\"md\">Any length of message<\/td>\n<\/tr>\n<tr data-start=\"732\" data-end=\"773\">\n<td data-start=\"732\" data-end=\"751\" data-col-size=\"sm\">Output<\/td>\n<td data-start=\"751\" data-end=\"773\" data-col-size=\"md\">Fixed 160-bit hash<\/td>\n<\/tr>\n<tr data-start=\"774\" data-end=\"824\">\n<td data-start=\"774\" data-end=\"793\" data-col-size=\"sm\">Type<\/td>\n<td data-start=\"793\" data-end=\"824\" data-col-size=\"md\">Cryptographic hash function<\/td>\n<\/tr>\n<tr data-start=\"825\" data-end=\"919\">\n<td data-start=\"825\" data-end=\"844\" data-col-size=\"sm\">Purpose<\/td>\n<td data-start=\"844\" data-end=\"919\" data-col-size=\"md\">Ensuring data integrity, used in digital signatures, certificates, etc.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\">\n<div class=\"absolute end-0 flex items-end\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<hr data-start=\"921\" data-end=\"924\" \/>\n<h2 data-start=\"926\" data-end=\"959\">\ud83e\uddee How SHA-1 Works (In Brief):<\/h2>\n<ol data-start=\"961\" data-end=\"1382\">\n<li data-start=\"961\" data-end=\"1058\">\n<p data-start=\"964\" data-end=\"1058\"><strong data-start=\"964\" data-end=\"984\">Message Padding:<\/strong> The original message is padded to make its length a multiple of 512 bits.<\/p>\n<\/li>\n<li data-start=\"1059\" data-end=\"1134\">\n<p data-start=\"1062\" data-end=\"1134\"><strong data-start=\"1062\" data-end=\"1085\">Divide into Blocks:<\/strong> The padded message is split into 512-bit blocks.<\/p>\n<\/li>\n<li data-start=\"1135\" data-end=\"1201\">\n<p data-start=\"1138\" data-end=\"1201\"><strong data-start=\"1138\" data-end=\"1162\">Initial Hash Values:<\/strong> Five 32-bit variables are initialized.<\/p>\n<\/li>\n<li data-start=\"1202\" data-end=\"1317\">\n<p data-start=\"1205\" data-end=\"1317\"><strong data-start=\"1205\" data-end=\"1220\">Processing:<\/strong> Each 512-bit block is processed in 80 rounds using bitwise operations, constants, and functions.<\/p>\n<\/li>\n<li data-start=\"1318\" data-end=\"1382\">\n<p data-start=\"1321\" data-end=\"1382\"><strong data-start=\"1321\" data-end=\"1338\">Final Output:<\/strong> A 160-bit digest (hash value) is generated.<\/p>\n<\/li>\n<\/ol>\n<hr data-start=\"1384\" data-end=\"1387\" \/>\n<h2 data-start=\"1389\" data-end=\"1434\">\u2757 Weaknesses and Vulnerabilities of SHA-1:<\/h2>\n<p data-start=\"1436\" data-end=\"1595\">SHA-1 was <strong data-start=\"1446\" data-end=\"1467\">considered secure<\/strong> until <strong data-start=\"1474\" data-end=\"1499\">major vulnerabilities<\/strong> were discovered over time. The biggest weakness is its <strong data-start=\"1555\" data-end=\"1594\">susceptibility to collision attacks<\/strong>.<\/p>\n<hr data-start=\"1597\" data-end=\"1600\" \/>\n<h2 data-start=\"1602\" data-end=\"1636\">\ud83d\udee0\ufe0f What is a Collision Attack?<\/h2>\n<p data-start=\"1638\" data-end=\"1800\">A <strong data-start=\"1640\" data-end=\"1653\">collision<\/strong> occurs when <strong data-start=\"1666\" data-end=\"1719\">two different inputs produce the same hash output<\/strong>. In cryptography, this should be <strong data-start=\"1753\" data-end=\"1774\">almost impossible<\/strong> for a good hash function.<\/p>\n<h3 data-start=\"1802\" data-end=\"1829\">SHA-1 Collision Attack:<\/h3>\n<ul data-start=\"1830\" data-end=\"2042\">\n<li data-start=\"1830\" data-end=\"1947\">\n<p data-start=\"1832\" data-end=\"1947\">A <strong data-start=\"1834\" data-end=\"1854\">collision attack<\/strong> on SHA-1 means an attacker can create two different files that have the <strong data-start=\"1927\" data-end=\"1946\">same SHA-1 hash<\/strong>.<\/p>\n<\/li>\n<li data-start=\"1948\" data-end=\"2042\">\n<p data-start=\"1950\" data-end=\"2042\">This can lead to <strong data-start=\"1967\" data-end=\"1988\">fake certificates<\/strong>, <strong data-start=\"1990\" data-end=\"2036\">malicious software that appears legitimate<\/strong>, etc.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2044\" data-end=\"2047\" \/>\n<h2 data-start=\"2049\" data-end=\"2080\">\ud83d\udd25 Real-World SHA-1 Attacks:<\/h2>\n<h3 data-start=\"2082\" data-end=\"2141\">1. <strong data-start=\"2089\" data-end=\"2141\">SHAttered Attack (2025) \u2013 Google &amp; CWI Amsterdam<\/strong><\/h3>\n<ul data-start=\"2142\" data-end=\"2331\">\n<li data-start=\"2142\" data-end=\"2184\">\n<p data-start=\"2144\" data-end=\"2184\">First <strong data-start=\"2150\" data-end=\"2173\">practical collision<\/strong> for SHA-1.<\/p>\n<\/li>\n<li data-start=\"2185\" data-end=\"2261\">\n<p data-start=\"2187\" data-end=\"2261\">Google generated <strong data-start=\"2204\" data-end=\"2231\">two different PDF files<\/strong> with the <strong data-start=\"2241\" data-end=\"2260\">same SHA-1 hash<\/strong>.<\/p>\n<\/li>\n<li data-start=\"2262\" data-end=\"2331\">\n<p data-start=\"2264\" data-end=\"2331\">Proved that <strong data-start=\"2276\" data-end=\"2295\">SHA-1 is broken<\/strong> and unsafe for use in cryptography.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2333\" data-end=\"2381\">2. <strong data-start=\"2340\" data-end=\"2381\">Chosen-prefix Collision Attack (2025)<\/strong><\/h3>\n<ul data-start=\"2382\" data-end=\"2584\">\n<li data-start=\"2382\" data-end=\"2413\">\n<p data-start=\"2384\" data-end=\"2413\">More advanced than SHAttered.<\/p>\n<\/li>\n<li data-start=\"2414\" data-end=\"2509\">\n<p data-start=\"2416\" data-end=\"2509\">Attackers can craft <strong data-start=\"2436\" data-end=\"2462\">two arbitrary messages<\/strong> with <strong data-start=\"2468\" data-end=\"2487\">same SHA-1 hash<\/strong>, giving more control.<\/p>\n<\/li>\n<li data-start=\"2510\" data-end=\"2584\">\n<p data-start=\"2512\" data-end=\"2584\">Practical implication: forged digital signatures, fake software updates.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2586\" data-end=\"2589\" \/>\n<h2 data-start=\"2591\" data-end=\"2619\">\ud83d\udeab Why SHA-1 is Insecure:<\/h2>\n<ul data-start=\"2621\" data-end=\"2854\">\n<li data-start=\"2621\" data-end=\"2703\">\n<p data-start=\"2623\" data-end=\"2703\"><strong data-start=\"2623\" data-end=\"2654\">Collision resistance broken<\/strong> (with much fewer computations than brute force).<\/p>\n<\/li>\n<li data-start=\"2704\" data-end=\"2749\">\n<p data-start=\"2706\" data-end=\"2749\">Vulnerable to <strong data-start=\"2720\" data-end=\"2748\">chosen-prefix collisions<\/strong>.<\/p>\n<\/li>\n<li data-start=\"2750\" data-end=\"2798\">\n<p data-start=\"2752\" data-end=\"2798\"><strong data-start=\"2752\" data-end=\"2771\">Not recommended<\/strong> for any cryptographic use.<\/p>\n<\/li>\n<li data-start=\"2799\" data-end=\"2854\">\n<p data-start=\"2801\" data-end=\"2854\">Browsers and organizations have <strong data-start=\"2833\" data-end=\"2847\">deprecated<\/strong> SHA-1.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"2856\" data-end=\"2859\" \/>\n<h2 data-start=\"2861\" data-end=\"2888\">\u2705 Alternatives to SHA-1:<\/h2>\n<div class=\"_tableContainer_16hzy_1\">\n<div class=\"_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2890\" data-end=\"3143\">\n<thead data-start=\"2890\" data-end=\"2934\">\n<tr data-start=\"2890\" data-end=\"2934\">\n<th data-start=\"2890\" data-end=\"2902\" data-col-size=\"sm\">Algorithm<\/th>\n<th data-start=\"2902\" data-end=\"2916\" data-col-size=\"sm\">Hash Length<\/th>\n<th data-start=\"2916\" data-end=\"2934\" data-col-size=\"sm\">Security Level<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"2980\" data-end=\"3143\">\n<tr data-start=\"2980\" data-end=\"3039\">\n<td data-start=\"2980\" data-end=\"3007\" data-col-size=\"sm\">SHA-2 (SHA-256, SHA-512)<\/td>\n<td data-col-size=\"sm\" data-start=\"3007\" data-end=\"3022\">256\u2013512 bits<\/td>\n<td data-col-size=\"sm\" data-start=\"3022\" data-end=\"3039\">Highly secure<\/td>\n<\/tr>\n<tr data-start=\"3040\" data-end=\"3093\">\n<td data-start=\"3040\" data-end=\"3048\" data-col-size=\"sm\">SHA-3<\/td>\n<td data-start=\"3048\" data-end=\"3063\" data-col-size=\"sm\">224\u2013512 bits<\/td>\n<td data-start=\"3063\" data-end=\"3093\" data-col-size=\"sm\">Future-proof, newer design<\/td>\n<\/tr>\n<tr data-start=\"3094\" data-end=\"3143\">\n<td data-start=\"3094\" data-end=\"3103\" data-col-size=\"sm\">BLAKE3<\/td>\n<td data-start=\"3103\" data-end=\"3114\" data-col-size=\"sm\">256 bits<\/td>\n<td data-start=\"3114\" data-end=\"3143\" data-col-size=\"sm\">Extremely fast and secure<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\">\n<div class=\"absolute end-0 flex items-end\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<hr data-start=\"3145\" data-end=\"3148\" \/>\n<h2 data-start=\"3150\" data-end=\"3182\">\ud83d\udd10 SHA-1 in Network Security:<\/h2>\n<p data-start=\"3184\" data-end=\"3213\">SHA-1 was previously used in:<\/p>\n<ul data-start=\"3214\" data-end=\"3320\">\n<li data-start=\"3214\" data-end=\"3240\">\n<p data-start=\"3216\" data-end=\"3240\"><strong data-start=\"3216\" data-end=\"3240\">SSL\/TLS certificates<\/strong><\/p>\n<\/li>\n<li data-start=\"3241\" data-end=\"3265\">\n<p data-start=\"3243\" data-end=\"3265\"><strong data-start=\"3243\" data-end=\"3265\">Digital signatures<\/strong><\/p>\n<\/li>\n<li data-start=\"3266\" data-end=\"3288\">\n<p data-start=\"3268\" data-end=\"3288\"><strong data-start=\"3268\" data-end=\"3288\">Password hashing<\/strong><\/p>\n<\/li>\n<li data-start=\"3289\" data-end=\"3320\">\n<p data-start=\"3291\" data-end=\"3320\"><strong data-start=\"3291\" data-end=\"3320\">Software integrity checks<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3322\" data-end=\"3367\">Now, replaced with <strong data-start=\"3341\" data-end=\"3350\">SHA-2<\/strong> or <strong data-start=\"3354\" data-end=\"3363\">SHA-3<\/strong> in:<\/p>\n<ul data-start=\"3368\" data-end=\"3427\">\n<li data-start=\"3368\" data-end=\"3386\">\n<p data-start=\"3370\" data-end=\"3386\">HTTPS (TLS 1.2+)<\/p>\n<\/li>\n<li data-start=\"3387\" data-end=\"3399\">\n<p data-start=\"3389\" data-end=\"3399\">Blockchain<\/p>\n<\/li>\n<li data-start=\"3400\" data-end=\"3406\">\n<p data-start=\"3402\" data-end=\"3406\">VPNs<\/p>\n<\/li>\n<li data-start=\"3407\" data-end=\"3427\">\n<p data-start=\"3409\" data-end=\"3427\">Cryptographic APIs<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"3429\" data-end=\"3432\" \/>\n<h2 data-start=\"3434\" data-end=\"3451\">\ud83d\udcda Conclusion:<\/h2>\n<ul data-start=\"3453\" data-end=\"3618\">\n<li data-start=\"3453\" data-end=\"3496\">\n<p data-start=\"3455\" data-end=\"3496\">SHA-1 is <strong data-start=\"3464\" data-end=\"3478\">deprecated<\/strong> and <strong data-start=\"3483\" data-end=\"3495\">insecure<\/strong>.<\/p>\n<\/li>\n<li data-start=\"3497\" data-end=\"3542\">\n<p data-start=\"3499\" data-end=\"3542\"><strong data-start=\"3499\" data-end=\"3520\">Avoid using SHA-1<\/strong> in any modern system.<\/p>\n<\/li>\n<li data-start=\"3543\" data-end=\"3618\">\n<p data-start=\"3545\" data-end=\"3618\">Always use <strong data-start=\"3556\" data-end=\"3576\">SHA-256 or SHA-3<\/strong> for integrity and cryptographic security.<\/p>\n<\/li>\n<\/ul>\n<hr data-start=\"3620\" data-end=\"3623\" \/>\n<p data-start=\"3625\" data-end=\"3734\" data-is-last-node=\"\" data-is-only-node=\"\">Would you like a <strong data-start=\"3642\" data-end=\"3657\">PDF summary<\/strong>, <strong data-start=\"3659\" data-end=\"3693\">diagram of the SHA-1 algorithm<\/strong>, or a <strong data-start=\"3700\" data-end=\"3733\">comparison with MD5 and SHA-2<\/strong>?<\/p>\n<h3 data-start=\"3625\" data-end=\"3734\"><a href=\"https:\/\/resources.saylor.org\/wwwresources\/archived\/site\/wp-content\/uploads\/2012\/07\/SHA-1-1.pdf\" target=\"_blank\" rel=\"noopener\">Network Security Secure hashing Algorithm 1 or SHA1 algorithm Attack in network Security Computer<\/a><\/h3>\n<h3 class=\"LC20lb MBeuO DKV0Md\"><a href=\"https:\/\/aircconline.com\/ijcnc\/V16N3\/16324cnc06.pdf\" target=\"_blank\" rel=\"noopener\">Analysis and Evolution of SHA-1 Algorithm<\/a><\/h3>\n<h3 class=\"LC20lb MBeuO DKV0Md\"><a href=\"https:\/\/annamalaiuniversity.ac.in\/studport\/download\/sci\/cis\/resources\/M.Sc.(CS)-IV%20Semester-PCSE402-Network%20Security.pdf\" target=\"_blank\" rel=\"noopener\">IV Semester-PCSE402-Network Security<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Network Security Secure hashing Algorithm 1 or SHA1 algorithm Attack in network Security Computer [fvplayer id=&#8221;135&#8243;] Network Security: Secure Hashing Algorithm 1 (SHA-1) and Its Vulnerabilities What is SHA-1? SHA-1 (Secure Hashing Algorithm 1) is a cryptographic hash function developed by the National Security Agency (NSA) and published by the National Institute of Standards and [&hellip;]<\/p>\n","protected":false},"author":71,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[98],"tags":[],"class_list":["post-2833","post","type-post","status-publish","format-standard","hentry","category-computer-network"],"_links":{"self":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/posts\/2833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/users\/71"}],"replies":[{"embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/comments?post=2833"}],"version-history":[{"count":0,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/posts\/2833\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/media?parent=2833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/categories?post=2833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.reilsolar.com\/pdf\/wp-json\/wp\/v2\/tags?post=2833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}