VAMPIRE	eBACS: ECRYPT Benchmarking of Cryptographic Systems	ECRYPT II

Measurements of stream ciphers on one machine: aarch64; Cortex-A72 (410fd083); 2019 Broadcom BCM2711; 4 x 1500MHz; pi4b, supercop-20250922

[Page version: 20251028 08:35:56]

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 0.98 0.98 0.99 tango642 2.20 2.20 2.20 chacha8 2.67 2.69 2.70 T:sosemanuk 2.85 2.99 3.02 T:tpy 3.02 3.06 3.34 T:tpy6 3.05 3.06 3.11 salsa208 3.01 3.14 3.18 T:nlsv2 3.15 3.16 3.16 chacha12 3.52 3.54 3.57 T:panama 4.05 4.08 4.15 salsa2012 3.96 4.09 4.20 T:tpypy 4.14 4.17 4.26 T:cryptmtv3 4.69 4.69 4.78 chacha20 6.05 6.05 6.08 salsa20 6.06 6.07 6.08 xsalsa20 11.64 11.65 11.66 T:aes128estream 16.29 16.57 16.66 T:aes256estream 19.45 19.51 20.05 T:aes128ctr 22.54 22.76 23.16 T:aes192ctr 24.43 24.74 25.19 T:ocelot1 25.66 25.85 26.43 T:aes256ctr 25.76 26.10 28.15 T:ocelot2 40.34 41.95 43.08 T:amastrid

Cycles/byte for 4096 bytes 25% 50% 75% stream 1.15 1.15 1.16 tango642 2.22 2.22 2.22 chacha8 3.08 3.09 3.12 salsa208 3.17 3.18 3.18 chacha12 3.22 3.26 3.29 T:nlsv2 3.28 3.28 3.29 T:sosemanuk 3.77 3.79 4.00 T:tpy6 4.08 4.10 4.15 salsa2012 4.65 4.66 4.72 T:cryptmtv3 4.65 4.69 4.71 T:tpy 4.72 4.72 4.78 chacha20 4.75 4.77 4.78 T:panama 5.82 5.84 5.90 T:tpypy 6.08 6.09 6.10 salsa20 6.17 6.18 6.18 xsalsa20 11.72 11.72 11.73 T:aes128estream 16.51 16.64 16.70 T:aes256estream 19.92 19.94 20.33 T:aes128ctr 23.17 23.23 23.51 T:aes192ctr 25.82 25.90 26.23 T:ocelot1 26.19 26.28 26.71 T:aes256ctr 27.81 28.03 29.02 T:ocelot2 42.36 43.23 44.04 T:amastrid

Cycles/byte for 1536 bytes 25% 50% 75% stream 1.44 1.44 1.45 tango642 2.25 2.25 2.25 chacha8 3.12 3.13 3.15 salsa208 3.21 3.21 3.21 chacha12 3.48 3.51 3.65 T:nlsv2 4.12 4.13 4.15 salsa2012 4.33 4.34 4.35 T:sosemanuk 4.76 4.76 4.77 chacha20 4.99 5.00 5.00 T:tpy6 5.54 5.59 5.66 T:cryptmtv3 6.12 6.13 6.14 salsa20 6.36 6.36 6.39 xsalsa20 6.79 6.82 6.83 T:panama 7.51 7.52 7.52 T:tpy 8.77 8.88 9.33 T:tpypy 11.85 11.87 11.88 T:aes128estream 16.66 16.73 17.03 T:aes256estream 20.59 20.60 20.67 T:aes128ctr 23.93 24.15 24.25 T:aes192ctr 26.93 26.97 27.07 T:aes256ctr 27.78 28.20 28.28 T:ocelot1 29.82 29.94 30.04 T:ocelot2 45.00 45.34 47.68 T:amastrid

Cycles/byte for 576 bytes 25% 50% 75% stream 2.21 2.21 2.23 tango642 2.65 2.65 2.65 chacha8 3.20 3.21 3.25 salsa208 3.66 3.66 3.69 chacha12 4.21 4.22 4.24 salsa2012 4.22 4.24 4.64 T:nlsv2 5.51 5.51 5.51 chacha20 6.21 6.21 6.22 salsa20 6.70 6.70 6.83 T:cryptmtv3 6.84 6.84 6.86 xsalsa20 7.18 7.22 7.26 T:sosemanuk 8.25 8.28 8.34 T:tpy6 12.11 12.12 12.13 T:aes128estream 12.22 12.27 12.39 T:panama 15.15 15.17 15.62 T:tpy 16.16 16.26 16.77 T:tpypy 17.09 17.13 17.94 T:aes256estream 22.52 22.54 22.67 T:aes128ctr 26.22 26.38 26.58 T:aes192ctr 29.00 29.04 29.18 T:aes256ctr 33.09 33.13 33.63 T:ocelot1 35.33 35.55 35.95 T:ocelot2 50.48 52.55 55.03 T:amastrid

Cycles/byte for 64 bytes 25% 50% 75% stream 3.98 3.98 4.25 salsa208 4.98 4.98 5.33 salsa2012 5.86 5.86 5.86 chacha8 6.98 6.98 7.23 salsa20 7.36 7.36 7.61 chacha12 11.28 11.28 11.36 chacha20 12.08 12.08 12.08 tango642 12.69 12.69 12.94 xsalsa20 14.88 15.45 15.56 T:nlsv2 15.62 15.69 15.98 T:aes128estream 17.03 17.09 17.23 T:cryptmtv3 22.28 22.53 22.80 T:aes256estream 41.16 41.33 41.72 T:sosemanuk 46.00 46.33 46.59 T:aes128ctr 50.61 50.61 50.69 T:tpy6 53.53 53.95 54.28 T:aes192ctr 54.77 54.86 55.08 T:aes256ctr 81.19 81.34 81.69 T:panama 101.27 102.52 102.89 T:ocelot1 107.11? 107.70? 120.66? T:ocelot2 112.73 112.77 116.17 T:tpy 115.56 115.64 120.06 T:tpypy 145.05 148.58 148.81 T:amastrid

Cycles/byte for 8 bytes 25% 50% 75% stream 34.25 34.25 34.75 salsa208 42.25 42.25 44.12 salsa2012 46.25 46.25 46.25 chacha8 55.25 55.62 57.00 T:aes128estream 58.25 58.25 58.25 chacha12 58.25 58.25 60.25 salsa20 72.12 72.12 72.25 chacha20 79.50 80.50 80.88 T:aes256estream 82.25? 82.50? 93.12? T:nlsv2 91.12 91.12 93.50 tango642 97.62 101.88 104.00 T:cryptmtv3 103.88 103.88 105.38 xsalsa20 274.25 276.25 288.25 T:aes128ctr 299.00 303.12 307.00 T:aes256ctr 327.75 328.75 332.38 T:sosemanuk 332.12 336.62 349.75 T:aes192ctr 384.38 384.38 384.38 T:tpy6 642.00 642.62 647.00 T:panama 637.75 651.62 654.38 T:ocelot1 679.12? 767.00? 768.00? T:ocelot2 881.38 883.75 908.62 T:tpy 883.88 896.00 907.12 T:tpypy 972.75 991.62 1051.75 T:amastrid