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Performance Tweaks about fpe HOT 3 CLOSED

capitalone avatar capitalone commented on August 16, 2024
Performance Tweaks

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Comments (3)

anitgandhi avatar anitgandhi commented on August 16, 2024

ciph and prf should have a signature closer to

func (f *Cipher) ciph(output, input []byte) error

to reduce escapes to the heap for the return value.

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anitgandhi avatar anitgandhi commented on August 16, 2024

Majority of allocations are coming from the fact that everything in this library operates on strings. In theory, the operations can be changed to using utf8 package backed by byte slices.

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anitgandhi avatar anitgandhi commented on August 16, 2024

#8 partially completes this, however I'm leaving this open as there are opportunities for more improvement with regards to strings and big integers.

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