public string GetSigningCertificateFingerprint(HashAlgorithmName algorithm)
{
if (!Enum.IsDefined(typeof(HashAlgorithmName), algorithm))
{
throw new ArgumentException(
string.Format(
CultureInfo.CurrentCulture,
Strings.UnrecognizedEnumValue,
algorithm),
nameof(algorithm));
}
var certificate = SignerInfo.Certificate;
if (certificate == null)
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, Strings.Verify_ErrorNoCertificate, FriendlyName));
}
if (_signingCertificateFingerprintLookup == null)
{
_signingCertificateFingerprintLookup = new Dictionary <HashAlgorithmName, string>();
}
if (_signingCertificateFingerprintLookup.TryGetValue(algorithm, out var fingerprint))
{
return(fingerprint);
}
fingerprint = CertificateUtility.GetHashString(certificate, algorithm);
_signingCertificateFingerprintLookup.Add(algorithm, fingerprint);
return(fingerprint);
}
private static string GetCertificateFingerprint(
Signature signature,
HashAlgorithmName fingerprintAlgorithm,
IDictionary <HashAlgorithmName, string> CertificateFingerprintLookUp)
{
if (!CertificateFingerprintLookUp.TryGetValue(fingerprintAlgorithm, out var fingerprintString))
{
fingerprintString = CertificateUtility.GetHashString(signature.SignerInfo.Certificate, fingerprintAlgorithm);
CertificateFingerprintLookUp[fingerprintAlgorithm] = fingerprintString;
}
return(fingerprintString);
}