在Go语言中生成crypt() sha512哈希值

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英文:

Generating crypt() sha512 hashes in Go

问题

我正在使用GoLang开发我的授权模块。之前我们使用的是带有crypt函数的PHP5。哈希值是使用SHA-512生成的:

$6$rounds=5000$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21

并且以这种方式存储在数据库中。但现在我需要在GoLang中实现相同的功能。我在Google上搜索并尝试了不同的方法,例如:

t512 := sha512_crypt.Crypt("rasmuslerdorf", "$6$usesomesillystringforsalt")
fmt.Printf("hash: %v\n", t512)

但是它们生成的结果都不同。谁能帮助我们进一步解决问题?

我们希望能够验证和创建与PHP版本相同的哈希值。

提前感谢。

英文:

I am working on my authorization module in GoLang. Before we used PHP5 with the crypt function. The hash was generated like SHA-512:

$6$rounds=5000$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21

And stored like that in the database. But now I need make it work also in GoLang. I have searched on Google and tried different things, such as:

t512 := sha512_crypt.Crypt("rasmuslerdorf", "$6$usesomesillystringforsalt$")
fmt.Printf("hash: %v\n", t512)

But all generate different things. Who can help us further?

We want validate and create hashes like the php version.

Thanks in advance.

答案1

得分: 9

osutil库(https://github.com/kless/osutil)支持所有crypt()哈希类型。

你可以使用以下PHP代码生成密码哈希:

echo crypt('rasmuslerdorf', '$6$usesomesillystringforsalt');

这段代码生成以下哈希值:

$6$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21

在Go语言中,可以这样实现:

package main                                                

import (
    "fmt"

    "github.com/kless/osutil/user/crypt/sha512_crypt"
)

func main() {
    c := sha512_crypt.New()
    hash, err := c.Generate([]byte("rasmuslerdorf"), []byte("$6$usesomesillystringforsalt"))
    if err != nil {
        panic(err)
    }

    fmt.Println(hash)
}

运行时,它也会生成正确的哈希值:

$6$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21

希望这回答了你的问题。

在实现时,请注意只使用了盐值的前16个字符,因此对于盐值usesomesillystri,会返回相同的哈希值。请确保在生产代码中选择随机的盐值。

英文:

The osutil library at https://github.com/kless/osutil has support for all crypt() hash types.

Your password hash can be produced with the following php code:

echo crypt('rasmuslerdorf', '$6$usesomesillystringforsalt');

This code produces the following hash:

$6$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21

This can be reproduced in Go like this:

package main                                                

import (
    "fmt"

    "github.com/kless/osutil/user/crypt/sha512_crypt"
)

func main() {
    c := sha512_crypt.New()
    hash, err := c.Generate([]byte("rasmuslerdorf"), []byte("$6$usesomesillystringforsalt"))
    if err != nil {
        panic(err)
    }

    fmt.Println(hash)
}

When run, it also produces the correct hash:

$6$usesomesillystri$D4IrlXatmP7rx3P3InaxBeoomnAihCKRVQP22JZ6EY47Wc6BkroIuUUBOov1i.S5KPgErtP/EN5mcO.ChWQW21

I hope this answers your question.

While implementing this please note that only 16 characters are used from the salt, so the same hash is returned for the salt usesomesillystri. Make sure that you choose random salts in the production code.

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  • 本文由 发表于 2014年10月5日 14:08:00
  • 转载请务必保留本文链接:https://go.coder-hub.com/26200107.html
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