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61b89747ed
This PR refactors and improves the password hashing code within gitea and makes it possible for server administrators to set the password hashing parameters In addition it takes the opportunity to adjust the settings for `pbkdf2` in order to make the hashing a little stronger. The majority of this work was inspired by PR #14751 and I would like to thank @boppy for their work on this. Thanks to @gusted for the suggestion to adjust the `pbkdf2` hashing parameters. Close #14751 --------- Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: delvh <dev.lh@web.de> Co-authored-by: John Olheiser <john.olheiser@gmail.com> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
62 lines
2.1 KiB
Go
62 lines
2.1 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package hash
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// DefaultHashAlgorithmName represents the default value of PASSWORD_HASH_ALGO
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// configured in app.ini.
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//
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// It is NOT the same and does NOT map to the defaultEmptyHashAlgorithmSpecification.
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//
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// It will be dealiased as per aliasAlgorithmNames whereas
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// defaultEmptyHashAlgorithmSpecification does not undergo dealiasing.
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const DefaultHashAlgorithmName = "pbkdf2"
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var DefaultHashAlgorithm *PasswordHashAlgorithm
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// aliasAlgorithNames provides a mapping between the value of PASSWORD_HASH_ALGO
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// configured in the app.ini and the parameters used within the hashers internally.
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//
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// If it is necessary to change the default parameters for any hasher in future you
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// should change these values and not those in argon2.go etc.
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var aliasAlgorithmNames = map[string]string{
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"argon2": "argon2$2$65536$8$50",
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"bcrypt": "bcrypt$10",
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"scrypt": "scrypt$65536$16$2$50",
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"pbkdf2": "pbkdf2_v2", // pbkdf2 should default to pbkdf2_v2
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"pbkdf2_v1": "pbkdf2$10000$50",
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// The latest PBKDF2 password algorithm is used as the default since it doesn't
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// use a lot of memory and is safer to use on less powerful devices.
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"pbkdf2_v2": "pbkdf2$50000$50",
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// The pbkdf2_hi password algorithm is offered as a stronger alternative to the
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// slightly improved pbkdf2_v2 algorithm
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"pbkdf2_hi": "pbkdf2$320000$50",
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}
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var RecommendedHashAlgorithms = []string{
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"pbkdf2",
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"argon2",
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"bcrypt",
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"scrypt",
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"pbkdf2_hi",
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}
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// SetDefaultPasswordHashAlgorithm will take a provided algorithmName and dealias it to
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// a complete algorithm specification.
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func SetDefaultPasswordHashAlgorithm(algorithmName string) (string, *PasswordHashAlgorithm) {
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if algorithmName == "" {
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algorithmName = DefaultHashAlgorithmName
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}
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alias, has := aliasAlgorithmNames[algorithmName]
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for has {
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algorithmName = alias
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alias, has = aliasAlgorithmNames[algorithmName]
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}
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// algorithmName should now be a full algorithm specification
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// e.g. pbkdf2$50000$50 rather than pbdkf2
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DefaultHashAlgorithm = Parse(algorithmName)
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return algorithmName, DefaultHashAlgorithm
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}
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