Possible candidates golang.org/x/crypto/

[ccoVeille]

https://pkg.go.dev/golang.org/x/crypto/ed25519
vs
https://pkg.go.dev/crypto/ed25519

https://cs.opensource.google/go/x/crypto/+/refs/tags/v0.32.0:ed25519/ed25519.go

I don't know if this one matches your linter logic as it's not a golang.org/x/exp/ package

[ccoVeille]

https://tip.golang.org/doc/go1.24

New crypto/hkdf, crypto/pbkdf2, and crypto/sha3 packages

The new crypto/hkdf package implements the HMAC-based Extract-and-Expand key derivation function HKDF, as defined in RFC 5869.

The new crypto/pbkdf2 package implements the password-based key derivation function PBKDF2, as defined in RFC 8018.

The new crypto/sha3 package implements the SHA-3 hash function and SHAKE and cSHAKE extendable-output functions, as defined in FIPS 202.

All three packages are based on pre-existing golang.org/x/crypto/... packages.