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* perf(internal): Use FastHash for internal hashing docs: Add xxhash performance improvement to changelog entry feat(hash): Add fast non-cryptographic hash function Signed-off-by: Jason Cameron <git@jasoncameron.dev> * test(hash): add xxhash benchmarks and collision tests Signed-off-by: Jason Cameron <git@jasoncameron.dev> * Update metadata check-spelling run (pull_request) for json/hash Signed-off-by: check-spelling-bot <check-spelling-bot@users.noreply.github.com> on-behalf-of: @check-spelling <check-spelling-bot@check-spelling.dev> --------- Signed-off-by: Jason Cameron <git@jasoncameron.dev> Signed-off-by: check-spelling-bot <check-spelling-bot@users.noreply.github.com>
26 lines
717 B
Go
26 lines
717 B
Go
package internal
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import (
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"crypto/sha256"
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"encoding/hex"
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"strconv"
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"github.com/cespare/xxhash/v2"
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)
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// SHA256sum computes a cryptographic hash. Still used for proof-of-work challenges
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// where we need the security properties of a cryptographic hash function.
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func SHA256sum(text string) string {
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hash := sha256.New()
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hash.Write([]byte(text))
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return hex.EncodeToString(hash.Sum(nil))
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}
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// FastHash is a high-performance non-cryptographic hash function suitable for
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// internal caching, policy rule identification, and other performance-critical
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// use cases where cryptographic security is not required.
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func FastHash(text string) string {
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h := xxhash.Sum64String(text)
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return strconv.FormatUint(h, 16)
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}
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