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seansummers / jwks2asn1.py
Last active Oct 26, 2021 — forked from JonLundy/conv.py
JWKS parsing
View jwks2asn1.py
#!/usr/bin/env python3
#
# openssl asn1parse -noout -out private_key.der -genconf <(python jwks2asn1.py private_key.json)
# openssl rsa -in private_key.der -inform der > private_key.pem
#
# rfc7517.3 : urlsafe_b64decode
# rfc7517.A.1 : ints are big-indian
#
import base64
@jboner
jboner / latency.txt
Last active Aug 19, 2022
Latency Numbers Every Programmer Should Know
View latency.txt
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD