英文:
GOLANG 64decode string illegal data, not sure why
问题
亲爱的Gophers：
我遇到了一个简单的问题。我正在尝试解码一个64编码的字符串（确切地说是OAUTH令牌）。
我将字符串拆分，并将拆分的部分之一进行64解码，但总是发现一个非法字符。当我将相同的值放入任何基于Web的64解码器中时，它可以正常工作。
我认为可能存在一个尾随的空字符或其他问题。有人可以给我一些建议吗？我在这里放置了代码：https://play.golang.org/p/cf-x6GgpEp
确切的错误是：illegal base64 data at input byte 408
以下也是代码，非常简短：
package main
import (
"fmt"
"strings"
b64 "encoding/base64"
)
func main() {
fmt.Println("Hello, playground and stackoverflow users")
token := `eyJhbGciOiJSUzI1NiIsImtpZCI6IkNKc2hmNnhMOGVuODlhVVZVenJaX1JqMTJwS3pqZkFUdkNqcT lNbUxGTlUifQ.eyJ2ZXIiO
jEsImp0aSI6IkFULlFxN21mck94RnhZaVFXZWpGQjczMTZnRXdQbWJBVGtsVzB6Sm1FWVRPU0UiLCJp c3MiOiJodHRwczovL2Nvb
XBhbnl4Lm9rdGEuY29tL29hdXRoMi9hdXMxYTRpYmRhdDBKWXc1czFkOCIsImF1ZCI6Imh0dHA6Ly9s b2NhbGhvc3Q6MzAwMCIsI
mlhdCI6MTQ4ODA2MDgxMywiZXhwIjoxNDg4MDY0NDEzLCJjaWQiOiIzam1OdlZDRlo1RjZsV096SU9O TyIsInVpZCI6IjAwdTFhOXNrMXloenR3Y3FSMWQ4Iiwic2NwIjpbInJlYWQiLCJyZW1vdmUiLCJyZXN lcnZlIl0sInN1YiI6InJlbW92ZUB3b3cuY29tIn0
.XFGZoVv-w4kRgqMDB-Me1RM1aO5f5JH8W_fLFGnYzkLXGassbKMWafAfVx9j- wzaWVFfHtsH4fiLjZZbCRYkWli0b6Q3VjdDPJq
YcvhN_wQ9WTmqoJLNyY- AA5o7yThL4Vz5ih7P_nJWMN7xEWUpWadeJbShvPNtdFHHPBFTAiDx0fXFs98vZHfeLEy2dnwYf4aY4p w
jcfmhOZNaVahMtQh0dJVa0ai4KPMqQXDXMHDrbEwa2eWY_2pCPXUZekvC3DyRFeSfkRJ6fIe3d6XccDgAy_qzjBCjnutyezg7ZzV
d866wkb2j2kJwyr0w3Q5iBBFgxEv6vpcpaM_KHSXTyA`
// 将令牌拆分以获取中间值 xx。（我们需要这个）。xx
fragments := strings.Split(token, ".")
fmt.Println("这是值\n" + fragments[1])
jwtFragment, err := b64.StdEncoding.DecodeString(fragments[1])
_ = jwtFragment //
fmt.Println(err)
fmt.Println("有什么想法")
}
希望对你有所帮助！
英文:
Fellow Gophers:
I'm stuck on something simple. I'm trying to convert decode a 64endoded string (OAUTH token to be exact).
I split the string, and put one of the parts of the split to be 64decoded, and I always find an illegal character. When I put the same value into any web based 64decoder it works.
I think that maybe there is a trailing null or something. Can anyone give me some advice. I put the code here: https://play.golang.org/p/cf-x6GgpEp
The exact error is: <code>illegal base64 data at input byte 408</code>
Below is the code as well, its pretty short:
package main
import (
"fmt"
"strings"
b64 "encoding/base64"
)
func main() {
fmt.Println("Hello, playground and stackover flow users")
token := `eyJhbGciOiJSUzI1NiIsImtpZCI6IkNKc2hmNnhMOGVuODlhVVZVenJaX1JqMTJwS3pqZkFUdkNqcT lNbUxGTlUifQ.eyJ2ZXIiO
jEsImp0aSI6IkFULlFxN21mck94RnhZaVFXZWpGQjczMTZnRXdQbWJBVGtsVzB6Sm1FWVRPU0UiLCJp c3MiOiJodHRwczovL2Nvb
XBhbnl4Lm9rdGEuY29tL29hdXRoMi9hdXMxYTRpYmRhdDBKWXc1czFkOCIsImF1ZCI6Imh0dHA6Ly9s b2NhbGhvc3Q6MzAwMCIsI
mlhdCI6MTQ4ODA2MDgxMywiZXhwIjoxNDg4MDY0NDEzLCJjaWQiOiIzam1OdlZDRlo1RjZsV096SU9O TyIsInVpZCI6IjAwdTFhOXNrMXloenR3Y3FSMWQ4Iiwic2NwIjpbInJlYWQiLCJyZW1vdmUiLCJyZXN lcnZlIl0sInN1YiI6InJlbW92ZUB3b3cuY29tIn0
.XFGZoVv-w4kRgqMDB-Me1RM1aO5f5JH8W_fLFGnYzkLXGassbKMWafAfVx9j- wzaWVFfHtsH4fiLjZZbCRYkWli0b6Q3VjdDPJq
YcvhN_wQ9WTmqoJLNyY- AA5o7yThL4Vz5ih7P_nJWMN7xEWUpWadeJbShvPNtdFHHPBFTAiDx0fXFs98vZHfeLEy2dnwYf4aY4p w
jcfmhOZNaVahMtQh0dJVa0ai4KPMqQXDXMHDrbEwa2eWY_2pCPXUZekvC3DyRFeSfkRJ6fIe3d6XccDgAy_qzjBCjnutyezg7ZzV
d866wkb2j2kJwyr0w3Q5iBBFgxEv6vpcpaM_KHSXTyA`
// Spit the token to get the middle value xx.(we want this).xx
fragments := strings.Split(token,".")
fmt.Println ( "Here is the value\n"+fragments[1])
jwtFragment, err := b64.StdEncoding.DecodeString(fragments[1])
_=jwtFragment //
fmt.Println (err)
fmt.Println ("any ideas")
}
答案1
得分: 0
JWT（JSON Web Tokens）是进行 base64 URL 编码的，而且没有填充。
唯一的区别是我使用了 base64.RawURLEncoding
英文:
JWT's are base64 URL encoded and not padded.
Here's a fixed version on play
Only difference is I used base64.RawURLEncoding
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