blocks|key|1014636|text|这不起作用的原因是，当您调用String(md.digest(convertme))时，您告诉Java将一个加密字节序列解释为一个字符串。您想要的是将字节转换为十六进制字符。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1014637|entityMap^0|E|S|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

The reason this doesn't work is that when you call <code>String(md.digest(convertme))</code>, you are telling Java to interpret a sequence of encrypted bytes as a String. What you want is to convert the bytes into hexadecimal characters.

blocks|key|800285|text|只需使用apache+commons编解码库。他们有一个名为DigestUtils的实用程序类|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|800286|不需要深入了解细节。|800287|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/codec/apidocs/org/apache/commons/codec/digest/DigestUtils.html#sha%2528java.lang.String%2529^0|U|B|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Just use the apache commons codec library. They have a utility class called <a href="http://commons.apache.org/codec/apidocs/org/apache/commons/codec/digest/DigestUtils.html#sha%28java.lang.String%29" rel="noreferrer">DigestUtils</a>

No need to get into details.

blocks|key|1014715|text|将字节数组转换为十六进制字符串。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1014716|public+static+String+toSHA1(byte[]+convertme)+{
++++final+char[]+HEX_CHARS+=+"0123456789ABCDEF".toCharArray();
++++MessageDigest+md+=+null;
++++try+{
++++++++md+=+MessageDigest.getInstance("SHA-1");
++++}
++++catch(NoSuchAlgorithmException+e)+{
++++++++e.printStackTrace();
++++}
++++byte[]+buf+=+md.digest(convertme);
++++char[]+chars+=+new+char[2+*+buf.length];
++++for+(int+i+=+0;+i+<+buf.length;+%2B%2Bi)+{
++++++++chars[2+*+i]+=+HEX_CHARS[(buf[i]+&+0xF0)+>>>+4];
++++++++chars[2+*+i+%2B+1]+=+HEX_CHARS[buf[i]+&+0x0F];
++++}
++++return+new+String(chars);
}|code-block|syntax|javascript|1014717|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Convert byte array to hex string.

<pre><code>public static String toSHA1(byte[] convertme) {
 final char[] HEX_CHARS = "0123456789ABCDEF".toCharArray();
 MessageDigest md = null;
 try {
 md = MessageDigest.getInstance("SHA-1");
 }
 catch(NoSuchAlgorithmException e) {
 e.printStackTrace();
 }
 byte[] buf = md.digest(convertme);
 char[] chars = new char[2 * buf.length];
 for (int i = 0; i &lt; buf.length; ++i) {
 chars[2 * i] = HEX_CHARS[(buf[i] &amp; 0xF0) &gt;&gt;&gt; 4];
 chars[2 * i + 1] = HEX_CHARS[buf[i] &amp; 0x0F];
 }
 return new String(chars);
}
</code></pre>

blocks|key|800360|text|这是我将字符串转换为sha1的解决方案。它在我的Android应用程序中运行良好：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|800361|private+static+String+encryptPassword(String+password)
{
++++String+sha1+=+"";
++++try
++++{
++++++++MessageDigest+crypt+=+MessageDigest.getInstance("SHA-1");
++++++++crypt.reset();
++++++++crypt.update(password.getBytes("UTF-8"));
++++++++sha1+=+byteToHex(crypt.digest());
++++}
++++catch(NoSuchAlgorithmException+e)
++++{
++++++++e.printStackTrace();
++++}
++++catch(UnsupportedEncodingException+e)
++++{
++++++++e.printStackTrace();
++++}
++++return+sha1;
}

private+static+String+byteToHex(final+byte[]+hash)
{
++++Formatter+formatter+=+new+Formatter();
++++for+(byte+b+:+hash)
++++{
++++++++formatter.format("%2502x",+b);
++++}
++++String+result+=+formatter.toString();
++++formatter.close();
++++return+result;
}|code-block|syntax|javascript|800362|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is my solution of converting string to sha1. It works well in my Android app:

<pre><code>private static String encryptPassword(String password)
{
 String sha1 = "";
 try
 {
 MessageDigest crypt = MessageDigest.getInstance("SHA-1");
 crypt.reset();
 crypt.update(password.getBytes("UTF-8"));
 sha1 = byteToHex(crypt.digest());
 }
 catch(NoSuchAlgorithmException e)
 {
 e.printStackTrace();
 }
 catch(UnsupportedEncodingException e)
 {
 e.printStackTrace();
 }
 return sha1;
}

private static String byteToHex(final byte[] hash)
{
 Formatter formatter = new Formatter();
 for (byte b : hash)
 {
 formatter.format("%02x", b);
 }
 String result = formatter.toString();
 formatter.close();
 return result;
}
</code></pre>

blocks|key|1014769|text|使用Guava+Hashing+class|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1014770|Hashing.sha1().hashString(+"password",+Charsets.UTF_8+).toString()|code-block|syntax|javascript|1014771|entityMap|0|LINK|mutability|MUTABLE|url|https://google.github.io/guava/releases/22.0/api/docs/com/google/common/hash/Hashing.html^0|2|J|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Using <a href="https://google.github.io/guava/releases/22.0/api/docs/com/google/common/hash/Hashing.html" rel="noreferrer">Guava Hashing class</a>:

<pre><code>Hashing.sha1().hashString( "password", Charsets.UTF_8 ).toString()
</code></pre>

blocks|key|1014796|text|这是一个简单的解决方案，可以在将字符串转换为十六进制格式时使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1014797|private+static+String+encryptPassword(String+password)+throws+NoSuchAlgorithmException,+UnsupportedEncodingException+{

++++MessageDigest+crypt+=+MessageDigest.getInstance("SHA-1");
++++crypt.reset();
++++crypt.update(password.getBytes("UTF-8"));

++++return+new+BigInteger(1,+crypt.digest()).toString(16);
}|code-block|syntax|javascript|1014798|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is a simple solution that can be used when converting a string to a hex format:

<pre><code>private static String encryptPassword(String password) throws NoSuchAlgorithmException, UnsupportedEncodingException {

 MessageDigest crypt = MessageDigest.getInstance("SHA-1");
 crypt.reset();
 crypt.update(password.getBytes("UTF-8"));

 return new BigInteger(1, crypt.digest()).toString(16);
}
</code></pre>

blocks|key|1014878|text|如前所述，使用apache+commons编解码器。它也是Spring+guys推荐的(参见Spring文档中的DigestUtils+)。例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1014879|DigestUtils.sha1Hex(b);|code-block|syntax|javascript|1014880|绝对不会在这里使用最高评分的答案。|1014881|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

As mentioned before use apache commons codec. It's recommended by Spring guys as well (see DigestUtils in Spring doc). E.g.:

<pre><code>DigestUtils.sha1Hex(b);
</code></pre>

Definitely wouldn't use the top rated answer here.

blocks|key|1014913|text|SHA1散列的64位表示形式：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1014914|String+hashedVal+=+Base64.getEncoder().encodeToString(DigestUtils.sha1(stringValue.getBytes(Charset.forName("UTF-8"))));|code-block|syntax|javascript|1014915|entityMap^0|0|4|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Base 64 Representation of <code>SHA1</code> Hash:

<pre><code>String hashedVal = Base64.getEncoder().encodeToString(DigestUtils.sha1(stringValue.getBytes(Charset.forName("UTF-8"))));
</code></pre>

I'm trying to make a simple String to SHA1 converter in Java and this is what I've got...

<pre><code>public static String toSHA1(byte[] convertme) {
 MessageDigest md = null;
 try {
 md = MessageDigest.getInstance("SHA-1");
 }
 catch(NoSuchAlgorithmException e) {
 e.printStackTrace();
 } 
 return new String(md.digest(convertme));
}
</code></pre>

When I pass it <code>toSHA1("password".getBytes())</code>, I get <code>[�a�ɹ??�%l�3~��.</code> I know it's probably a simple encoding fix like UTF-8, but could someone tell me what I should do to get what I want which is <code>5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8</code>? Or am I doing this completely wrong?

Java String to SHA1

Android

Java

我正在尝试用Java语言做一个简单的字符串到SHA1的转换器，这就是我得到的……public static String toSHA1(byte[] convertme) {    MessageDigest md = null;    try {        md = MessageDigest.getInstan...

问SHA1的Java字符串
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