func golang.org/x/crypto/argon2.extractKey
2 uses
golang.org/x/crypto/argon2 (current package)
argon2.go#L115: return extractKey(B, memory, uint32(threads), keyLen)
argon2.go#L240: func extractKey(B []block, memory, threads, keyLen uint32) []byte {
The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)