public bool SignatureDeformatter(string p_strHashbyteDeformatter, string p_strDeformatterData)
{
bool result;
try
{
byte[] rgbHash = System.Convert.FromBase64String(p_strHashbyteDeformatter);
System.Security.Cryptography.RSACryptoServiceProvider rSACryptoServiceProvider = new System.Security.Cryptography.RSACryptoServiceProvider();
rSACryptoServiceProvider.FromXmlString(this.p_strKeyPublic);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter rSAPKCS1SignatureDeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(rSACryptoServiceProvider);
rSAPKCS1SignatureDeformatter.SetHashAlgorithm("MD5");
byte[] rgbSignature = System.Convert.FromBase64String(p_strDeformatterData);
if (rSAPKCS1SignatureDeformatter.VerifySignature(rgbHash, rgbSignature))
{
result = true;
}
else
{
result = false;
}
}
catch
{
result = false;
}
return(result);
}
private static async System.Threading.Tasks.Task <ResultType> TaskMain(Fee.Crypt.OnCryptTask_CallBackInterface a_callback_interface, byte[] a_binary, byte[] a_signature_binary, string a_key, Fee.TaskW.CancelToken a_cancel)
#endif
{
ResultType t_ret;
{
t_ret.verify = false;
t_ret.errorstring = null;
}
try{
//ハッシュの計算。
byte[] t_hash_binary = null;
using (System.Security.Cryptography.SHA1Managed t_sha1 = new System.Security.Cryptography.SHA1Managed()){
t_hash_binary = t_sha1.ComputeHash(a_binary);
}
if (t_hash_binary == null)
{
t_ret.verify = false;
t_ret.errorstring = "Task_VerifySignaturePublicKey : hash == null";
}
else
{
using (System.Security.Cryptography.RSACryptoServiceProvider t_rsa = new System.Security.Cryptography.RSACryptoServiceProvider()){
t_rsa.FromXmlString(a_key);
//証明書検証。
System.Security.Cryptography.RSAPKCS1SignatureDeformatter t_deformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(t_rsa);
t_deformatter.SetHashAlgorithm("SHA1");
t_ret.verify = t_deformatter.VerifySignature(t_hash_binary, a_signature_binary);
}
}
}catch (System.Exception t_exception) {
t_ret.verify = false;
t_ret.errorstring = "Task_VerifySignaturePublicKey : " + t_exception.Message;
}
if (a_cancel.IsCancellationRequested() == true)
{
t_ret.verify = false;
t_ret.errorstring = "Task_VerifySignaturePublicKey : Cancel";
a_cancel.ThrowIfCancellationRequested();
}
if (t_ret.verify == false)
{
if (t_ret.errorstring == null)
{
t_ret.errorstring = "Task_VerifySignaturePublicKey : null";
}
}
return(t_ret);
}
public static bool VerifyDigitalSignature(byte[] bytes, byte[] signature, string publicKey)
{
using (var sha = new System.Security.Cryptography.SHA256Managed())
{
var hashData = sha.ComputeHash(bytes);
using (var rsa = new System.Security.Cryptography.RSACryptoServiceProvider())
{
rsa.FromXmlString(publicKey);
var rsaDeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(rsa);
rsaDeformatter.SetHashAlgorithm("SHA256");
return(rsaDeformatter.VerifySignature(hashData, signature));
}
}
}
public bool verify(byte[] sig)
{
cs.Close();
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.ImportParameters(RSAKeyInfo);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
RSADeformatter.SetHashAlgorithm("SHA1");
long i = 0;
long j = 0;
byte[] tmp;
//Util.Dump("c:\\sig.bin", sig);
if (sig[0] == 0 && sig[1] == 0 && sig[2] == 0)
{
long i1 = (sig[i++] << 24) & 0xff000000;
long i2 = (sig[i++] << 16) & 0x00ff0000;
long i3 = (sig[i++] << 8) & 0x0000ff00;
long i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
i += j;
i1 = (sig[i++] << 24) & 0xff000000;
i2 = (sig[i++] << 16) & 0x00ff0000;
i3 = (sig[i++] << 8) & 0x0000ff00;
i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
tmp = new byte[j];
Array.Copy(sig, i, tmp, 0, j);
sig = tmp;
}
//System.out.println("j="+j+" "+Integer.toHexString(sig[0]&0xff));
//return signature.verify(sig);
bool verify = RSADeformatter.VerifySignature(sha1, sig);
return(verify);
}
public bool verify(byte[] sig)
{
cs.Close();
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.ImportParameters(RSAKeyInfo);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
RSADeformatter.SetHashAlgorithm("SHA1");
long i=0;
long j=0;
byte[] tmp;
//Util.Dump("c:\\sig.bin", sig);
if(sig[0]==0 && sig[1]==0 && sig[2]==0)
{
long i1 = (sig[i++]<<24)&0xff000000;
long i2 = (sig[i++]<<16)&0x00ff0000;
long i3 = (sig[i++]<<8)&0x0000ff00;
long i4 = (sig[i++])&0x000000ff;
j = i1 | i2 | i3 | i4;
i+=j;
i1 = (sig[i++]<<24)&0xff000000;
i2 = (sig[i++]<<16)&0x00ff0000;
i3 = (sig[i++]<<8)&0x0000ff00;
i4 = (sig[i++])&0x000000ff;
j = i1 | i2 | i3 | i4;
tmp=new byte[j];
Array.Copy(sig, i, tmp, 0, j); sig=tmp;
}
//System.out.println("j="+j+" "+Integer.toHexString(sig[0]&0xff));
//return signature.verify(sig);
bool verify = RSADeformatter.VerifySignature(sha1, sig);
return verify;
}
public bool verify(byte[] sig)
{
cs.Close();
System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider();
RSA.ImportParameters(RSAKeyInfo);
System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA);
RSADeformatter.SetHashAlgorithm("SHA1");
int i=0;
int j=0;
byte[] tmp;
if(sig[0]==0 && sig[1]==0 && sig[2]==0)
{
j=(int)((sig[i++]<<24)&0xff000000)|(byte)((sig[i++]<<16)&0x00ff0000)|(byte)
((sig[i++]<<8)&0x0000ff00)|(byte)((sig[i++])&0x000000ff);
i+=j;
j=(int)((sig[i++]<<24)&0xff000000)|(byte)((sig[i++]<<16)&0x00ff0000)|(byte)
((sig[i++]<<8)&0x0000ff00)|(byte)((sig[i++])&0x000000ff);
tmp=new byte[j];
Array.Copy(sig, i, tmp, 0, j); sig=tmp;
}
//System.out.println("j="+j+" "+Integer.toHexString(sig[0]&0xff));
//return signature.verify(sig);
return RSADeformatter.VerifySignature(sha1, sig);
}
