VAMPIRE	eBACS: ECRYPT Benchmarking of Cryptographic Systems	ECRYPT II

Measurements of stream ciphers on one machine: aarch64; Cortex-A53 (410fd034); 2018 Broadcom BCM2837B0; 4 x 1400MHz; pi3aplus, supercop-20250922

[Page version: 20251128 09:21:59]

eBASC (ECRYPT Benchmarking of Stream Ciphers) is a project to measure the performance of stream ciphers. This page presents benchmark results collected in eBASC:

• Speed (cycles/byte) of encrypting an 8-byte message.
• Speed of encrypting a 64-byte message.
• Speed of encrypting a 576-byte message.
• Speed of encrypting a 1536-byte message.
• Speed of encrypting a 4096-byte message.
• Speed of encrypting a long message. This is computed as 1/3072 of the difference in cycle counts between encrypting 4096-byte messages and encrypting 1024-byte messages.

Graphs show timings for all message lengths between 0 and 4096 bytes. The stair-step shape of a typical curve on the graphs reflects the fact that these stream ciphers handle messages in blocks, such as 64-byte blocks.

Each table row lists the first quartile of many speed measurements, the median of many speed measurements, the third quartile of many speed measurements, and the name of the primitive. Measurements with large variance are indicated in red with question marks. The symbol T: (starting with supercop-20200816) means that the SUPERCOP database at the time of benchmarking did not list constant time as a goal for this implementation. The symbol T!!! means that constant time was listed as a goal for this implementation, but that the implementation failed TIMECOP. (TIMECOP failures are not necessarily security issues; they can sometimes be resolved by, e.g., declaring that a rejection-sampling condition is safe to declassify.)

There is a separate page with more information about each stream cipher and each implementation. Designers and implementors interested in submitting new stream ciphers and new implementations should read the call for submissions.

Test results

Graphs: (bytes,cycles)

Cycles/byte for long messages 25% 50% 75% stream 1.65 1.66 1.66 tango642 2.52 2.52 2.52 chacha8 3.46 3.46 3.46 chacha12 3.98 3.98 3.99 salsa208 5.01 5.02 5.02 salsa2012 5.25 5.25 5.27 T:tpy 5.36 5.37 5.37 chacha20 5.38 5.38 5.38 T:tpy6 6.86 6.87 6.88 T:nlsv2 7.11 7.12 7.12 T:cryptmtv3 7.20 7.21 7.21 xsalsa20 7.21 7.21 7.22 salsa20 9.09 9.30 9.42 T:tpypy 17.44 17.49 17.54 T:aes128estream 17.49 17.60 18.02 T:aes128ctr 20.43 20.90 21.64 T:aes192ctr 24.12 24.25 24.65 T:aes256ctr 24.46 24.47 24.52 T:aes256estream 50.36 50.42 52.07 T:ocelot1 52.89 52.98 54.66 T:ocelot2 77.19 78.69 79.79 T:amastrid

Cycles/byte for 4096 bytes 25% 50% 75% stream 1.92 1.92 1.93 tango642 2.55 2.55 2.55 chacha8 3.49 3.49 3.49 chacha12 4.02 4.02 4.02 salsa208 5.05 5.05 5.06 salsa2012 5.40 5.40 5.40 chacha20 6.47 6.47 6.47 T:tpy6 7.12 7.12 7.13 T:nlsv2 7.24 7.24 7.25 salsa20 7.35 7.35 7.35 xsalsa20 7.99 7.99 8.00 T:tpy 8.28 8.28 8.28 T:cryptmtv3 11.68 11.82 11.88 T:tpypy 17.56 17.58 17.61 T:aes128estream 19.92 19.96 20.25 T:aes128ctr 23.22 23.28 23.80 T:aes192ctr 24.59 24.59 24.63 T:aes256estream 26.55 26.63 26.90 T:aes256ctr 52.76 52.79 54.03 T:ocelot1 55.34 55.38 56.61 T:ocelot2 80.49 81.57 81.97 T:amastrid

Cycles/byte for 1536 bytes 25% 50% 75% stream 2.36 2.37 2.37 tango642 2.60 2.60 2.60 chacha8 3.55 3.55 3.55 chacha12 4.07 4.07 4.07 salsa208 5.11 5.11 5.12 salsa2012 5.45 5.46 5.46 chacha20 7.30 7.30 7.31 salsa20 7.59 7.59 7.60 xsalsa20 7.76 7.77 7.78 T:nlsv2 8.28 8.29 8.29 T:tpy6 10.69 10.69 10.70 T:cryptmtv3 12.55 12.55 12.56 T:tpy 15.84 16.03 16.07 T:tpypy 17.71 17.72 17.73 T:aes128estream 23.79 23.87 24.15 T:aes128ctr 24.79 24.80 24.84 T:aes256estream 27.18 27.24 27.57 T:aes192ctr 30.54 30.64 31.39 T:aes256ctr 56.72 56.73 56.88 T:ocelot1 59.33 59.40 59.59 T:ocelot2 86.24 86.68 87.14 T:amastrid

Cycles/byte for 576 bytes 25% 50% 75% stream 3.10 3.10 3.11 chacha8 3.53 3.54 3.56 tango642 4.09 4.09 4.09 chacha12 4.22 4.23 4.23 salsa208 5.26 5.26 5.31 salsa2012 6.14 6.14 6.15 chacha20 7.45 7.45 7.45 salsa20 8.23 8.23 8.23 xsalsa20 9.20 9.21 9.23 T:nlsv2 12.64 12.64 12.67 T:cryptmtv3 13.12 13.12 13.13 T:tpy6 18.16 18.16 18.19 T:aes128estream 24.71 24.71 24.72 T:tpy 25.37 25.37 25.51 T:aes256estream 27.25 27.28 27.31 T:tpypy 36.15 36.26 36.38 T:aes128ctr 39.95 40.04 40.18 T:aes192ctr 43.78 43.96 44.28 T:aes256ctr 67.29 67.31 67.34 T:ocelot1 69.93 69.97 70.02 T:ocelot2 98.82 98.92 101.93 T:amastrid

Cycles/byte for 64 bytes 25% 50% 75% stream 6.00 6.00 6.00 salsa208 7.06 7.06 7.06 salsa2012 7.17 7.17 7.17 chacha8 8.47 8.47 8.47 chacha12 9.25 9.25 9.27 salsa20 11.64 11.64 11.64 chacha20 16.27 16.28 16.28 xsalsa20 18.52 18.53 18.56 tango642 23.92 23.92 23.95 T:aes128estream 28.44? 31.83? 34.28? T:cryptmtv3 32.77 32.78 32.80 T:nlsv2 32.78 32.80 32.86 T:aes256estream 74.89 75.05 75.11 T:tpy6 167.62 169.02 170.72 T:aes128ctr 172.83 173.05 173.08 T:tpypy 173.53 174.94 176.11 T:aes192ctr 178.19 179.05 182.23 T:aes256ctr 180.16 180.19 180.41 T:tpy 203.09 203.27 203.67 T:ocelot1 205.55 206.27 206.34 T:ocelot2 266.00 266.86 271.28 T:amastrid

Cycles/byte for 8 bytes 25% 50% 75% stream 51.50 51.62 51.88 salsa208 56.00 56.12 56.12 chacha8 60.12 60.25 60.25 salsa2012 66.25 66.25 66.38 chacha12 77.88 77.88 78.00 salsa20 87.88 88.12 88.12 T:aes128estream 91.62 91.75 91.75 chacha20 117.38 118.38 118.50 T:aes256estream 134.00 134.00 135.75 xsalsa20 138.62 140.12 140.25 tango642 146.62 146.88 147.00 T:nlsv2 161.12? 200.00? 207.12? T:cryptmtv3 555.25 557.00 557.25 T:tpy6 1219.62 1226.00 1236.50 T:aes128ctr 1229.62 1237.75 1253.75 T:aes192ctr 1254.88 1266.12 1278.38 T:aes256ctr 1276.50 1280.62 1284.38 T:ocelot2 1276.62 1281.12 1284.25 T:ocelot1 1315.12 1316.50 1317.25 T:tpypy 1388.50 1388.75 1390.25 T:tpy 1751.38 1765.88 1770.12 T:amastrid