从CLI生成一个base64连接codeD哈希相匹配的Java [英] Generating a base64 encoded hash from CLI to match Java

问题描述

我有一个从字符串生成一个网址安全base64 EN codeD哈希一个java code碱基，并想知道如果/如何做到这一点有可能与Linux的命令行工具。我与我在做什么这里是与字符集/编码猜测的问题，或与字符串转换为字节数组做。 Java的code：

I have a java code base that generates an URL safe base64 encoded hash from a string, and wondering if / how this would be possible with linux command line tools. I'm guessing the problem with what I am doing here is with the character set / encoding or to do with converting the string to a byte array. Java code:

MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] digest = md.digest("testString".getBytes());
// ^^ this is where the difference is?
String b64url = Base64.encodeBase64URLSafeString(digest);
// b64url: Ss8LOdnEdmcJo2ifVTrAGrVQVF_6RUTfwLLOqC-6AqM

命令行：

echo testString | sha256sum | cut -d" " -f1 | base64
# NDgxOGEyY2JkODYwOTY1NjJkODFmYzIwNmQ3ZTYyNWVlNGFjMTU5MmViNTc0MjQwMDQ4OTIzOTBl
# MDQzZTNlYwo=

是否有可能通过CLI工具生成的base64 EN codeD SHA256？

Is it possible to generate base64 encoded sha256 via cli tools?

推荐答案

您是编码十六进制字符串的base64，不散列，这是相当于的字节值：

You're base64 encoding a hexadecimal string, not the byte values of the hash, which is the equivalent of:

MessageDigest md = MessageDigest.getInstance("SHA-256");
byte[] digest = md.digest("testString".getBytes()); // Missing charset
String hex = Hex.encodeHexString(digest);
String base64 = Base64.encodeBase64(hex.getBytes());

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