Files
forge/modules/auth/password/hash/argon2.go
zeekayandHanzo Dev 9a07b4d089 legal: Hanzo AI, Inc. copyright above the upstream notices
2978 files. The fork is 2026-07-15 (rebrand: gitea.dev -> github.com/hanzoai/git),
so 2026 is the year, and "Copyright 2026 Hanzo AI, Inc." was already the form
used by the handful of files that had ours.

Shape is now:

	// Copyright 2026 Hanzo AI, Inc. All rights reserved.
	// Copyright 2015 The Gogs Authors. All rights reserved.
	// Copyright 2019 The Gitea Authors. All rights reserved.
	// SPDX-License-Identifier: MIT

Ours on top, theirs retained verbatim. Retained because MIT requires it, and
separately because they are true — those authors did write that code.

Not renamed to "The Git Authors": Git is a different project under a different
license, and putting its name here would attribute this code to people who have
nothing to do with it. Adding our line is the fix; overwriting theirs would have
been both a licence violation and a false statement.

gofmt still reports import-order drift in some of these files. It predates this
change (verified against a stash) and is left alone rather than burying a
one-line-per-file legal change under 3000 files of unrelated reordering.

Build clean.

Co-authored-by: Hanzo Dev <[email protected]>
2026-07-27 13:49:52 -07:00

76 lines
2.1 KiB
Go

// Copyright 2026 Hanzo AI, Inc. All rights reserved.
// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package hash
import (
"encoding/hex"
"strings"
"github.com/hanzoai/git/modules/log"
"golang.org/x/crypto/argon2"
)
func init() {
MustRegister("argon2", NewArgon2Hasher)
}
// Argon2Hasher implements PasswordHasher
// and uses the Argon2 key derivation function, hybrant variant
type Argon2Hasher struct {
time uint32
memory uint32
threads uint8
keyLen uint32
}
// HashWithSaltBytes a provided password and salt
func (hasher *Argon2Hasher) HashWithSaltBytes(password string, salt []byte) string {
if hasher == nil {
return ""
}
return hex.EncodeToString(argon2.IDKey([]byte(password), salt, hasher.time, hasher.memory, hasher.threads, hasher.keyLen))
}
// NewArgon2Hasher is a factory method to create an Argon2Hasher
// The provided config should be either empty or of the form:
// "<time>$<memory>$<threads>$<keyLen>", where <x> is the string representation
// of an integer
func NewArgon2Hasher(config string) *Argon2Hasher {
// This default configuration uses the following parameters:
// time=2, memory=64*1024, threads=8, keyLen=50.
// It will make two passes through the memory, using 64MiB in total.
// This matches the original configuration for `argon2` prior to storing hash parameters
// in the database.
// THESE VALUES MUST NOT BE CHANGED OR BACKWARDS COMPATIBILITY WILL BREAK
hasher := &Argon2Hasher{
time: 2,
memory: 1 << 16,
threads: 8,
keyLen: 50,
}
if config == "" {
return hasher
}
vals := strings.SplitN(config, "$", 4)
if len(vals) != 4 {
log.Error("invalid argon2 hash spec %s", config)
return nil
}
var err error
hasher.time, err = parseUintParam[uint32](vals[0], "time", "argon2", config, nil)
hasher.memory, err = parseUintParam[uint32](vals[1], "memory", "argon2", config, err)
hasher.threads, err = parseUintParam[uint8](vals[2], "threads", "argon2", config, err)
hasher.keyLen, err = parseUintParam[uint32](vals[3], "keyLen", "argon2", config, err)
if err != nil {
return nil
}
return hasher
}