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30 lines
1018 B
30 lines
1018 B
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package pbkdf2 implements the key derivation function PBKDF2 as defined in
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// RFC 8018 (PKCS #5 v2.1).
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//
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// This package is a wrapper for the PBKDF2 implementation in the
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// [crypto/pbkdf2] package. It is [frozen] and is not accepting new features.
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//
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// [frozen]: https://go.dev/wiki/Frozen
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package pbkdf2
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import (
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"crypto/pbkdf2"
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"hash"
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)
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// Key derives a key from the password, salt and iteration count, returning a
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// []byte of length keylen that can be used as cryptographic key. The key is
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// derived based on the method described as PBKDF2 with the HMAC variant using
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// the supplied hash function.
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func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
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out, err := pbkdf2.Key(h, string(password), salt, iter, keyLen)
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if err != nil {
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// FIPS 140 enforcement, or an invalid key length.
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panic(err)
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}
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return out
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}
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