{"id":557117,"date":"2026-05-27T03:32:42","date_gmt":"2026-05-27T03:32:42","guid":{"rendered":"https:\/\/notonbluray.com\/blog\/?p=557117"},"modified":"2026-05-27T03:34:51","modified_gmt":"2026-05-27T03:34:51","slug":"benchmarking-aes-256-sha256-and-crc-64-on-apple-silicon","status":"publish","type":"post","link":"https:\/\/notonbluray.com\/blog\/benchmarking-aes-256-sha256-and-crc-64-on-apple-silicon\/","title":{"rendered":"Benchmarking AES-256, SHA256 and CRC-64 on Apple Silicon"},"content":{"rendered":"
\n

Just a quick one – I needed some numbers for crypto and hashing performance on Apple Silicon so I vibe coded something quick and dirty to establish some, hoping it is useful for someone out there.. I only have access to two Apple Silicon CPUs a M2 Macbook Air<\/a>, and a M4 Pro Macmini<\/a>. All numbers are warmed up and averaged across multiple runs<\/p>\n\n\n\n

SHA-256<\/h2>\n\n\n\n

Using CC_SHA256 which provides hardware SHA2 acceleration.<\/p>\n\n\n\n

Block size<\/strong><\/td>M2 Mac Book Air (GiB\/Sec)<\/strong><\/td>M4 Pro Macmini (GiB\/Sec)<\/strong><\/td><\/tr>
4 KiB<\/strong><\/td>2.33<\/td>2.97<\/td><\/tr>
8 KiB<\/strong><\/td>2.45<\/td>3.13<\/td><\/tr>
16 KiB<\/strong><\/td>2.51<\/td>3.18<\/td><\/tr>
32 KiB<\/strong><\/td>2.54<\/td>3.21<\/td><\/tr>
64 KiB<\/strong><\/td>2.55<\/td>3.26<\/td><\/tr>
128 KiB<\/strong><\/td>2.56<\/td>3.27<\/td><\/tr>
256 KiB<\/strong><\/td>2.57<\/td>3.28<\/td><\/tr>
512 KiB<\/strong><\/td>2.57<\/td>3.28<\/td><\/tr>
1 MiB<\/strong><\/td>2.57<\/td>3.27<\/td><\/tr>
2 MiB<\/strong><\/td>2.57<\/td>3.27<\/td><\/tr>
4 MiB<\/strong><\/td>2.57<\/td>3.27<\/td><\/tr>
8 MiB<\/strong><\/td>2.57<\/td>3.28<\/td><\/tr>
16 MiB<\/strong><\/td>2.56<\/td>3.28<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

AES-256<\/h2>\n\n\n\n

Via CCCrypt, using ECB mode.<\/p>\n\n\n\n

Block size<\/strong><\/td>M2 Mac Book Air (GiB\/Sec)<\/strong><\/td>M4 Pro Macmini (GiB\/Sec)<\/strong><\/td><\/tr>
4 KiB<\/strong><\/td>6.43<\/td>8.66<\/td><\/tr>
8 KiB<\/strong><\/td>7.73<\/td>10.89<\/td><\/tr>
16 KiB<\/strong><\/td>8.59<\/td>12.45<\/td><\/tr>
32 KiB<\/strong><\/td>9.12<\/td>13.46<\/td><\/tr>
64 KiB<\/strong><\/td>9.21<\/td>13.84<\/td><\/tr>
128 KiB<\/strong><\/td>9.28<\/td>14.32<\/td><\/tr>
256 KiB<\/strong><\/td>9.35<\/td>14.56<\/td><\/tr>
512 KiB<\/strong><\/td>9.39<\/td>14.53<\/td><\/tr>
1 MiB<\/strong><\/td>9.40<\/td>14.63<\/td><\/tr>
2 MiB<\/strong><\/td>9.41<\/td>14.66<\/td><\/tr>
4 MiB<\/strong><\/td>9.43<\/td>14.70<\/td><\/tr>
8 MiB<\/strong><\/td>9.42<\/td>14.66<\/td><\/tr>
16 MiB<\/strong><\/td>9.37<\/td>14.49<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

CRC-64 PMULL<\/h2>\n\n\n\n

Since there is no specific support for CRC in CCCrypt, this is just hand-rolled using the ARM NEON PMULL instruction to accelerate the calculation (without it performance is in the hundreds of megabytes per second). This is using the ECMA constant 0x42F0E1EBA9EA3693.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Block size<\/strong><\/td>M2 Mac Book Air (GiB\/Sec)<\/strong><\/td>M4 Pro Macmini (GiB\/Sec)<\/strong><\/td><\/tr>
4 KiB<\/strong><\/td>58.89<\/td>67.50<\/td><\/tr>
8 KiB<\/strong><\/td>49.98<\/td>61.30<\/td><\/tr>
16 KiB<\/strong><\/td>53.52<\/td>63.76<\/td><\/tr>
32 KiB<\/strong><\/td>51.17<\/td>63.15<\/td><\/tr>
64 KiB<\/strong><\/td>50.74<\/td>63.09<\/td><\/tr>
128 KiB<\/strong><\/td>50.79<\/td>62.95<\/td><\/tr>
256 KiB<\/strong><\/td>50.35<\/td>62.50<\/td><\/tr>
512 KiB<\/strong><\/td>50..36<\/td>61.72<\/td><\/tr>
1 MiB<\/strong><\/td>50.28<\/td>57.87<\/td><\/tr>
2 MiB<\/strong><\/td>50.34<\/td>61.36<\/td><\/tr>
4 MiB<\/strong><\/td>50.27<\/td>61.58<\/td><\/tr>
8 MiB<\/strong><\/td>50.29<\/td>61.38<\/td><\/tr>
16 MiB<\/strong><\/td>49.67<\/td>61.01<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Conclusion<\/h2>\n\n\n\n

Both the M2 and M4 Pro perform excellently here, worth noting that there is not a huge generational difference evident. <\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Just a quick one – I needed some numbers for crypto and hashing performance on Apple Silicon so I vibe coded something quick and dirty to establish some, hoping it is useful for someone out there.. I only have access to two Apple Silicon CPUs a M2 Macbook Air, and a M4 Pro Macmini. All […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[72],"tags":[114,117,120,116,118,119,115],"class_list":["post-557117","post","type-post","status-publish","format-standard","hentry","category-mac","tag-aes","tag-apple-silicon","tag-benchmark","tag-crc-64","tag-m2","tag-m4","tag-sha-256"],"yoast_head":"\nBenchmarking AES-256, SHA256 and CRC-64 on Apple Silicon - Not on Blu-ray<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/notonbluray.com\/blog\/benchmarking-aes-256-sha256-and-crc-64-on-apple-silicon\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Benchmarking AES-256, SHA256 and CRC-64 on Apple Silicon - Not on Blu-ray\" \/>\n<meta property=\"og:description\" content=\"Just a quick one – I needed some numbers for crypto and hashing performance on Apple Silicon so I vibe coded something quick and dirty to establish some, hoping it is useful for someone out there.. 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