A Study on the Optimization of Blockchain Hashing Algorithm Based on PRCA

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Hash function</td><td class="align_center">Function collision threshold</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">SHA1</td><td class="align_center"><span style="width: 81.5751ptpx;"><svg height="11.9413pt" id="M48" style="vertical-align:-0.3499002pt" version="1.1" viewbox="-0.0498162 -11.5914 81.5751 11.9413" width="81.5751pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M412 140C382 77 369 73 315 73H129L270 222C362 320 402 379 402 466C402 571 322 635 234 635C177 635 130 609 99 576L42 495L64 475C90 514 133 568 201 568C274 568 318 519 318 435C318 349 255 267 193 193C144 135 87 78 32 23V0H405C417 45 427 89 440 131L412 140Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.24,-5.741)"><path d="M253 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31V0H451V31C369 38 365 43 365 108V177H462ZM284 227H88C155 336 218 430 282 519H284V227Z"></path></g></svg></span></td></tr><tr><td class="align_left">SHA256</td><td class="align_center"><span style="width: 86.0234ptpx;"><svg height="11.9413pt" id="M49" style="vertical-align:-0.3499002pt" version="1.1" viewbox="-0.0498162 -11.5914 86.0234 11.9413" width="86.0234pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M412 140C382 77 369 73 315 73H129L270 222C362 320 402 379 402 466C402 571 322 635 234 635C177 635 130 609 99 576L42 495L64 475C90 514 133 568 201 568C274 568 318 519 318 435C318 349 255 267 193 193C144 135 87 78 32 23V0H405C417 45 427 89 440 131L412 140Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.24,-5.741)"><path d="M389 0V32C297 38 291 46 291 118V635C234 613 175 595 109 583V556L161 554C203 552 207 547 207 497V118C207 46 201 38 110 32V0H389Z"></path></g><g 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<div>The threshold of hash function conflict.</div>

Security and Communication Networks

tab4

Table 4

Table 4: A Study on the Optimization of Blockchain Hashing Algorithm Based on PRCA 