[英]How to convert Java MessageDigest with two update statements to C#
How can I convert this Java code to C#?如何将此 Java 代码转换为 C#?
byte[] a = ...some byte array...;
byte[] b = ...some byte array...;
MessageDigest m_Hash = MessageDigest.getInstance("SHA-1");
m_Hash.update(a);
m_Hash.update(b);
byte[] ub = m_Hash.digest();
So far I have:到目前为止,我有:
var hash = HashAlgorithm.Create("SHA-1");
hash.ComputeHash(a);
hash.ComputeHash(b);
But I don't think this is going in the right direction because ComputeHash actually returns a byte[].但我不认为这是朝着正确的方向发展,因为 ComputeHash 实际上返回了一个字节 []。
So... it looks like update just appends the byte arrays... I wrote a function to do this and it looks like this:所以......看起来更新只是附加字节数组......我写了一个函数来做到这一点,它看起来像这样:
var hash = HashAlgorithm.Create("SHA-1");
byte[] ub = hash.ComputeHash(AppendArrays(a, b));
public byte[] AppendArrays(byte[] b1, params byte[][] others)
{
int n = b1.Length;
foreach (var other in others)
n += other.Length;
var result = new byte[n];
n = 0;
Array.Copy(b1, 0, result, n, b1.Length);
n += b1.Length;
foreach (var other in others)
{
Array.Copy(other, 0, result, n, other.Length);
n += other.Length;
}
return result;
}
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