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Add blake2b benchmark and examples/pwhash_selector.cr

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Didactic Drunk 2019-06-25 12:40:58 -07:00
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3
README.md
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@ -108,6 +108,9 @@ hash = pwhash.hash_str pass
pwhash.verify hash, pass
```
Use `examples/pwhash_selector.cr` to help choose ops/mem limits.
## Contributing
1. Fork it ( https://github.com/andrewhamon/cox/fork )

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benchmarks/blake2b.cr Normal file
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require "benchmark"
require "../src/cox"
require "openssl"
require "openssl/digest"
output_size = 64
sizes = [16, 64, 256, 1024, 8192, 16384]
bufs = sizes.map { |size| Bytes.new size }.to_a
puts "Compare against 'openssl speed digestname'"
puts "'crystal run --release benchmarks/blake2b.cr sha1 sha256'"
Benchmark.ips(warmup: 0.5) do |bm|
sizes.each_with_index do |size, i|
bm.report "blake2b new obj per iter #{size}" do
d = Cox::Blake2b.new 64
d.update bufs[i]
d.digest
end
d = Cox::Blake2b.new output_size
bm.report "blake2b reset per iter #{size}" do
d.reset
d.update bufs[i]
d.digest
end
d = Cox::Blake2b.new output_size
dst = Bytes.new d.digest_size
bm.report "blake2b reset reusing buffer per iter #{size}" do
d.reset
d.update bufs[i]
d.finish dst
end
end
ARGV.each do |arg|
sizes.each_with_index do |size, i|
bm.report "#{arg} new obj per iter #{size}" do
d = OpenSSL::Digest.new arg
d.update bufs[i]
d.digest
end
d = OpenSSL::Digest.new arg
bm.report "#{arg} reset per iter #{size}" do
d.reset
d.update bufs[i]
d.digest
end
# OpenSSL::Digest doesn't have a public .finish (yet)
end
end
end

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benchmarks/blake2b.txt Normal file
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# ARGV (md5) uses OpenSSL::Digest for comparison
crystal run --release benchmark/blake2b.cr -- md5
blake2b.new 16 1.67M (599.94ns) (± 1.72%) 1.07kB/op 3.11× slower
blake2b.reset 16 1.86M (536.20ns) (±30.19%) 592B/op 2.78× slower
blake2b.finish 16 5.19M (192.64ns) (± 7.99%) 0.0B/op fastest
md5.new 16 947.11k ( 1.06µs) (± 1.82%) 224B/op 5.48× slower
md5.reset 16 1.64M (609.26ns) (± 6.35%) 128B/op 3.16× slower
blake2b.new 64 1.63M (611.95ns) (± 4.92%) 1.07kB/op 3.18× slower
blake2b.reset 64 2.36M (423.98ns) (± 6.72%) 592B/op 2.20× slower
blake2b.finish 64 5.14M (194.38ns) (± 6.64%) 0.0B/op 1.01× slower
md5.new 64 782.61k ( 1.28µs) (±11.20%) 224B/op 6.63× slower
md5.reset 64 1.37M (728.47ns) (±10.08%) 128B/op 3.78× slower
blake2b.new 256 1.29M (774.20ns) (±12.59%) 1.07kB/op 4.02× slower
blake2b.reset 256 1.64M (609.63ns) (±12.04%) 592B/op 3.16× slower
blake2b.finish 256 2.92M (341.95ns) (± 4.12%) 0.0B/op 1.78× slower
md5.new 256 696.63k ( 1.44µs) (± 4.63%) 224B/op 7.45× slower
md5.reset 256 969.33k ( 1.03µs) (± 8.35%) 128B/op 5.36× slower
blake2b.new 1024 623.42k ( 1.60µs) (± 4.12%) 1.07kB/op 8.33× slower
blake2b.reset 1024 708.85k ( 1.41µs) (± 3.29%) 592B/op 7.32× slower
blake2b.finish 1024 739.69k ( 1.35µs) (±24.97%) 0.0B/op 7.02× slower
md5.new 1024 377.38k ( 2.65µs) (±13.05%) 224B/op 13.76× slower
md5.reset 1024 481.61k ( 2.08µs) (± 2.06%) 128B/op 10.78× slower
blake2b.new 8192 103.77k ( 9.64µs) (± 3.57%) 1.07kB/op 50.02× slower
blake2b.reset 8192 106.93k ( 9.35µs) (± 1.89%) 592B/op 48.55× slower
blake2b.finish 8192 110.76k ( 9.03µs) (± 0.92%) 0.0B/op 46.87× slower
md5.new 8192 76.17k ( 13.13µs) (± 2.55%) 224B/op 68.15× slower
md5.reset 8192 78.80k ( 12.69µs) (± 1.30%) 128B/op 65.88× slower
blake2b.new 16384 54.25k ( 18.43µs) (± 1.50%) 1.07kB/op 95.68× slower
blake2b.reset 16384 50.62k ( 19.75µs) (±11.75%) 592B/op 102.54× slower
blake2b.finish 16384 53.59k ( 18.66µs) (± 6.43%) 0.0B/op 96.86× slower
md5.new 16384 40.35k ( 24.78µs) (± 2.77%) 224B/op 128.64× slower
md5.reset 16384 39.44k ( 25.35µs) (± 4.71%) 128B/op 131.62× slower
openssl speed -evp blake2b512 md5
OpenSSL 1.1.1a 20 Nov 2018
options:bn(64,64) rc4(16x,int) des(int) aes(partial) idea(int) blowfish(ptr)
compiler: clang -fPIC -arch x86_64 -O3 -Wall -DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_IA32_SSE2 -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DRC4_ASM -DMD5_ASM -DAES_ASM -DVPAES_ASM -DBSAES_ASM -DGHASH_ASM -DECP_NISTZ256_ASM -DX25519_ASM -DPADLOCK_ASM -DPOLY1305_ASM -D_REENTRANT -DNDEBUG
Doing blake2b512 for 3s on 16 size blocks: 5998042 blake2b512's in 2.99s
Doing blake2b512 for 3s on 64 size blocks: 6057697 blake2b512's in 3.00s
Doing blake2b512 for 3s on 256 size blocks: 4325714 blake2b512's in 2.99s
Doing blake2b512 for 3s on 1024 size blocks: 1611100 blake2b512's in 2.99s
Doing blake2b512 for 3s on 8192 size blocks: 237548 blake2b512's in 2.99s
Doing blake2b512 for 3s on 16384 size blocks: 119315 blake2b512's in 2.97s
Doing md5 for 3s on 16 size blocks: 8250787 md5's in 2.98s
Doing md5 for 3s on 64 size blocks: 6621343 md5's in 2.99s
Doing md5 for 3s on 256 size blocks: 4110946 md5's in 2.98s
Doing md5 for 3s on 1024 size blocks: 1645393 md5's in 2.99s
Doing md5 for 3s on 8192 size blocks: 246308 md5's in 2.99s
Doing md5 for 3s on 16384 size blocks: 125954 md5's in 2.99s
# In all tests crystal Cox::Blake2b(512) beats crystal OpenSSL::Digest::SHA256.
# Using .reset instead of creating new objects gives a significant performance boost when hashing small data sizes.
# Reusing an output buffer with .reset gives a further performance boost when hashing small data sizes.
# New objects have a significant penalty for hashing small data sizes. Only problematic with iterative hashing or in a tight loop.

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examples/pwhash_selector.cr Normal file
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require "../src/cox"
if ARGV.empty?
puts "Help select Pwhash ops/mem limits for your application."
puts "Usage: #{PROGRAM_NAME} time_min [time_max] [mem_max]"
puts "\ttime is in seconds"
puts "\tmem is in K"
exit 1
end
time_min = ARGV.shift?.try &.to_f || 0.1
time_limit = if t = ARGV.shift?
t.to_f
else
time_min * 4
end
mem_limit = (ARGV.shift?.try &.to_i || (128*1024)).to_u64
pwhash = Cox::Pwhash.new
pass = "1234"
pwhash.memlimit = Cox::Pwhash::MEMLIMIT_MIN
loop do
pwhash.opslimit = Cox::Pwhash::OPSLIMIT_MIN
loop do
# p pwhash
t = Time.measure { pwhash.hash_str pass }.to_f
s = String.build do |sb|
sb << "mem_limit "
sb << "%7d" % pwhash.memlimit
sb << "K ops_limit "
sb << "%7d" % pwhash.opslimit
sb << " "
sb << "%8.4fs" % t
end
puts s if t >= time_min
break if t >= time_limit
pwhash.opslimit *= 2
end
puts ""
break if pwhash.memlimit >= mem_limit
pwhash.memlimit *= 2
end
# TODO: table format