public static string AddressFromPublicKey(PublicKey publicKey)
{
using var ripemd160 = new DevHawk.Security.Cryptography.RIPEMD160();
using var sha256 = SHA256.Create();
byte[] publicKeyPlain = publicKey.toString(encoded: false);
byte[] publicKeyCorrect = new byte[1 + publicKeyPlain.Length];
publicKeyCorrect[0] = 0x04;
Buffer.BlockCopy(publicKeyPlain, 0, publicKeyCorrect, 1, publicKeyPlain.Length);
byte[] hash1 = ripemd160.ComputeHash(sha256.ComputeHash(publicKeyCorrect));
byte[] hash2 = new byte[1 + hash1.Length];
hash2[0] = 0x32;
Buffer.BlockCopy(hash1, 0, hash2, 1, hash1.Length);
byte[] hash3 = sha256.ComputeHash(sha256.ComputeHash(hash2));
byte[] hash4 = new byte[hash2.Length + 4];
Buffer.BlockCopy(hash2, 0, hash4, 0, hash2.Length);
Buffer.BlockCopy(hash3, 0, hash4, hash4.Length - 4, 4);
var sb = StringBuilderPool.Acquire();
Base58Check.Encode(sb, hash4);
return(StringBuilderPool.GetStringAndRelease(sb));
}
public static bool VerifyAddress(string address, bool needChecksum = true)
{
if (string.IsNullOrEmpty(address))
{
return(false);
}
var hash4 = Base58Check.Decode(address);
if (hash4 == null)
{
return(false);
}
if (hash4.Length != 25 ||
hash4[0] != 0x32)
{
return(false);
}
if (needChecksum)
{
using var sha256 = SHA256.Create();
var hash2 = new byte[hash4.Length - 4];
Buffer.BlockCopy(hash4, 0, hash2, 0, hash2.Length);
var hash3 = sha256.ComputeHash(sha256.ComputeHash(hash2));
if (hash4[21] != hash3[0] ||
hash4[22] != hash3[1] ||
hash4[23] != hash3[2] ||
hash4[24] != hash3[3])
{
return(false);
}
}
return(true);
}
