System.Security.Cryptography.AsymmetricSignatureFormatter.CreateSignature C# (CSharp) Метод

		public virtual byte[] CreateSignature (HashAlgorithm hash) 
		{
			if (hash == null)
				throw new ArgumentNullException ("hash");

			SetHashAlgorithm (hash.ToString ());
			return CreateSignature (hash.Hash);
		}
	}

 void ComputeSignature(HashAlgorithm hash, AsymmetricSignatureFormatter formatter, string signatureMethod)
 {
     this.Signature.SignedInfo.ComputeReferenceDigests();
     this.Signature.SignedInfo.ComputeHash(hash);
     byte[] signature;
     if (SecurityUtils.RequiresFipsCompliance && signatureMethod == SecurityAlgorithms.RsaSha256Signature)
     {
         // This is to avoid the RSAPKCS1SignatureFormatter.CreateSignature from using SHA256Managed (non-FIPS-Compliant).
         // Hence we precompute the hash using SHA256CSP (FIPS compliant) and pass it to method.
         // NOTE: RSAPKCS1SignatureFormatter does not understand SHA256CSP inherently and hence this workaround. 
         formatter.SetHashAlgorithm("SHA256");
         signature = formatter.CreateSignature(hash.Hash);
     }
     else
     {
         signature = formatter.CreateSignature(hash);
     }
     this.Signature.SetSignatureValue(signature);
 }