C# SHA-1 与 PHP SHA-1 ...不同的结果？
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C# SHA-1 vs. PHP SHA-1...Different Results?
提问by Anand Capur
I am trying to calculate a SHA-1 Hash from a string, but when I calculate the string using php's sha1 function I get something different than when I try it in C#. I need C# to calculate the same string as PHP (since the string from php is calculated by a 3rd party that I cannot modify). How can I get C# to generate the same hash as PHP? Thanks!!!
我正在尝试从字符串计算 SHA-1 哈希，但是当我使用 php 的 sha1 函数计算字符串时，我得到的结果与在 C# 中尝试时有所不同。我需要 C# 来计算与 PHP 相同的字符串（因为来自 php 的字符串是由我无修改的第 3 方计算的）。如何让 C# 生成与 PHP 相同的哈希？谢谢！！！
String = [email protected]
字符串 = [email protected]
C# Code (Generates d32954053ee93985f5c3ca2583145668bb7ade86)
C# 代码（生成 d32954053ee93985f5c3ca2583145668bb7ade86）
string encode = secretkey + email;
UnicodeEncoding UE = new UnicodeEncoding();
byte[] HashValue, MessageBytes = UE.GetBytes(encode);
SHA1Managed SHhash = new SHA1Managed();
string strHex = "";
HashValue = SHhash.ComputeHash(MessageBytes);
foreach(byte b in HashValue) {
strHex += String.Format("{0:x2}", b);
}
PHP Code (Generates a9410edeaf75222d7b576c1b23ca0a9af0dffa98)
PHP 代码（生成 a9410edeaf75222d7b576c1b23ca0a9af0dffa98）
sha1();
采纳答案by Andrew Moore
Use ASCIIEncoding instead of UnicodeEncoding. PHP uses ASCII charset for hash calculations.
使用 ASCIIEncoding 而不是 UnicodeEncoding。PHP 使用 ASCII 字符集进行哈希计算。
回答by Gunnar
FWIW, I had a similar issue in Java. It turned out that I had to use "UTF-8" encoding to produce the same SHA1 hashes in Java as the sha1function produces in PHP 5.3.1 (running on XAMPP Vista).
FWIW，我在 Java 中遇到了类似的问题。事实证明，我必须使用“UTF-8”编码在 Java 中sha1生成与 PHP 5.3.1（在 XAMPP Vista 上运行）中生成的函数相同的 SHA1 哈希值。
private static String SHA1(final String text) throws NoSuchAlgorithmException, UnsupportedEncodingException {
final MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(text.getBytes("UTF-8"));
return new String(org.apache.commons.codec.binary.Hex.encodeHex(md.digest()));
}
回答by nicojs
Had the same problem. This code worked for me:
有同样的问题。这段代码对我有用：
string encode = secretkey + email;
SHA1 sha1 = SHA1CryptoServiceProvider.Create();
byte[] encodeBytes = Encoding.ASCII.GetBytes(encode);
byte[] encodeHashedBytes = sha1.ComputeHash(passwordBytes);
string pencodeHashed = BitConverter.
ToString(encode HashedBytes).Replace("-", "").ToLowerInvariant();
回答by Paul Johnson
I had this problem also. The following code will work.
我也有这个问题。以下代码将起作用。
string dataString = "string to hash";
SHA1 hash = SHA1CryptoServiceProvider.Create();
byte[] plainTextBytes = Encoding.ASCII.GetBytes(dataString);
byte[] hashBytes = hash.ComputeHash(plainTextBytes);
string localChecksum = BitConverter.ToString(hashBytes)
.Replace("-", "").ToLowerInvariant();
回答by Robert
Try The following! I think it will work great:
试试下面的！我认为它会很好用：
public static string SHA1Encodeb64(string toEncrypt)
{
//Produce an array of bytes which is the SHA1 hash
byte[] sha1Signature = new byte[40];
byte[] sha = System.Text.Encoding.Default.GetBytes(toEncrypt);
SHA1 sha1 = SHA1Managed.Create();
sha1Signature = sha1.ComputeHash(sha);
/**
* The BASE64 encoding standard's 6-bit alphabet, from RFC 1521,
* plus the padding character at the end.
*/
char[] Base64Chars = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '+', '/',
'='
};
//Algorithm to encode the SHA1 hash using Base64
StringBuilder sb = new StringBuilder();
int len = sha1Signature.Length;
int i = 0;
int ival;
while (len >= 3)
{
ival = ((int)sha1Signature[i++] + 256) & 0xff;
ival <<= 8;
ival += ((int)sha1Signature[i++] + 256) & 0xff;
ival <<= 8;
ival += ((int)sha1Signature[i++] + 256) & 0xff;
len -= 3;
sb.Append(Base64Chars[(ival >> 18) & 63]);
sb.Append(Base64Chars[(ival >> 12) & 63]);
sb.Append(Base64Chars[(ival >> 6) & 63]);
sb.Append(Base64Chars[ival & 63]);
}
switch (len)
{
case 0: // No pads needed.
break;
case 1: // Two more output bytes and two pads.
ival = ((int)sha1Signature[i++] + 256) & 0xff;
ival <<= 16;
sb.Append(Base64Chars[(ival >> 18) & 63]);
sb.Append(Base64Chars[(ival >> 12) & 63]);
sb.Append(Base64Chars[64]);
sb.Append(Base64Chars[64]);
break;
case 2: // Three more output bytes and one pad.
ival = ((int)sha1Signature[i++] + 256) & 0xff;
ival <<= 8;
ival += ((int)sha1Signature[i] + 256) & 0xff;
ival <<= 8;
sb.Append(Base64Chars[(ival >> 18) & 63]);
sb.Append(Base64Chars[(ival >> 12) & 63]);
sb.Append(Base64Chars[(ival >> 6) & 63]);
sb.Append(Base64Chars[64]);
break;
}
//Encode the signature using Base64
string base64Sha1Signature = sb.ToString();
return base64Sha1Signature;
}
回答by OmarElsherif
This method in .NET is equivalent to sha1 in php:
.NET中的这个方相当于php中的sha1：
string sha1Hash(string password)
{
return string.Join("", SHA1CryptoServiceProvider.Create().ComputeHash(Encoding.UTF8.GetBytes(password)).Select(x => x.ToString("x2")));
}
