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Viewing changes to src/launchpad.net/goamz/iam/sign.go

  • Committer: Package Import Robot
  • Author(s): Curtis C. Hovey
  • Date: 2015-09-29 19:43:29 UTC
  • mfrom: (47.1.4 wily-proposed)
  • Revision ID: package-import@ubuntu.com-20150929194329-9y496tbic30hc7vp
Tags: 1.24.6-0ubuntu1~15.04.1
https://launchpad.net/bugs/1500916
https://launchpad.net/bugs/1497087
Backport of 1.24.6 from wily. (LP: #1500916, #1497087)

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Lines of Context:
src/launchpad.net/goamz/iam/sign.go
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package iam
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import (
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        "crypto/hmac"
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        "crypto/sha256"
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        "encoding/base64"
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        "launchpad.net/goamz/aws"
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        "sort"
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        "strings"
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)
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// ----------------------------------------------------------------------------
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// Version 2 signing (http://goo.gl/RSRp5)
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var b64 = base64.StdEncoding
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func sign(auth aws.Auth, method, path string, params map[string]string, host string) {
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        params["AWSAccessKeyId"] = auth.AccessKey
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        params["SignatureVersion"] = "2"
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        params["SignatureMethod"] = "HmacSHA256"
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        var sarray []string
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        for k, v := range params {
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                sarray = append(sarray, aws.Encode(k)+"="+aws.Encode(v))
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        }
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        sort.StringSlice(sarray).Sort()
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        joined := strings.Join(sarray, "&")
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        payload := method + "\n" + host + "\n" + path + "\n" + joined
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        hash := hmac.New(sha256.New, []byte(auth.SecretKey))
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        hash.Write([]byte(payload))
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        signature := make([]byte, b64.EncodedLen(hash.Size()))
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        b64.Encode(signature, hash.Sum(nil))
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        params["Signature"] = string(signature)
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}