diff options
Diffstat (limited to 'crypto/src/x509/X509SignatureUtil.cs')
| -rw-r--r-- | crypto/src/x509/X509SignatureUtil.cs | 70 |
1 files changed, 36 insertions, 34 deletions
diff --git a/crypto/src/x509/X509SignatureUtil.cs b/crypto/src/x509/X509SignatureUtil.cs index 635e7d70b..8bffd8d37 100644 --- a/crypto/src/x509/X509SignatureUtil.cs +++ b/crypto/src/x509/X509SignatureUtil.cs @@ -7,6 +7,7 @@ using Org.BouncyCastle.Asn1.TeleTrust; using Org.BouncyCastle.Asn1.X509; using Org.BouncyCastle.Asn1.X9; using Org.BouncyCastle.Security; +using Org.BouncyCastle.Utilities; namespace Org.BouncyCastle.X509 { @@ -17,43 +18,15 @@ namespace Org.BouncyCastle.X509 if (!id1.Algorithm.Equals(id2.Algorithm)) return false; - Asn1Encodable p1 = id1.Parameters; - Asn1Encodable p2 = id2.Parameters; + // TODO Java has a property to control whether absent parameters can match NULL parameters + { + if (IsAbsentOrEmptyParameters(id1.Parameters) && IsAbsentOrEmptyParameters(id2.Parameters)) + return true; + } - if (p1 == p2) - return true; - if (p1 == null) - return p2.ToAsn1Object() is Asn1Null; - if (p2 == null) - return p1.ToAsn1Object() is Asn1Null; - - return p1.Equals(p2); + return Objects.Equals(id1.Parameters, id2.Parameters); } - internal static string GetSignatureName(AlgorithmIdentifier sigAlgID) - { - DerObjectIdentifier sigAlgOid = sigAlgID.Algorithm; - Asn1Encodable parameters = sigAlgID.Parameters; - - if (parameters != null && !DerNull.Instance.Equals(parameters)) - { - if (PkcsObjectIdentifiers.IdRsassaPss.Equals(sigAlgOid)) - { - RsassaPssParameters rsaParams = RsassaPssParameters.GetInstance(parameters); - - return GetDigestAlgName(rsaParams.HashAlgorithm.Algorithm) + "withRSAandMGF1"; - } - if (X9ObjectIdentifiers.ECDsaWithSha2.Equals(sigAlgOid)) - { - Asn1Sequence ecDsaParams = Asn1Sequence.GetInstance(parameters); - - return GetDigestAlgName((DerObjectIdentifier)ecDsaParams[0]) + "withECDSA"; - } - } - - return SignerUtilities.GetEncodingName(sigAlgOid) ?? sigAlgOid.GetID(); - } - /** * Return the digest algorithm using one of the standard JCA string * representations rather than the algorithm identifier (if possible). @@ -103,7 +76,36 @@ namespace Org.BouncyCastle.X509 else { return digestAlgOID.GetID(); + } + } + + internal static string GetSignatureName(AlgorithmIdentifier sigAlgID) + { + DerObjectIdentifier sigAlgOid = sigAlgID.Algorithm; + Asn1Encodable parameters = sigAlgID.Parameters; + + if (!IsAbsentOrEmptyParameters(parameters)) + { + if (PkcsObjectIdentifiers.IdRsassaPss.Equals(sigAlgOid)) + { + RsassaPssParameters rsaParams = RsassaPssParameters.GetInstance(parameters); + + return GetDigestAlgName(rsaParams.HashAlgorithm.Algorithm) + "withRSAandMGF1"; + } + if (X9ObjectIdentifiers.ECDsaWithSha2.Equals(sigAlgOid)) + { + Asn1Sequence ecDsaParams = Asn1Sequence.GetInstance(parameters); + + return GetDigestAlgName((DerObjectIdentifier)ecDsaParams[0]) + "withECDSA"; + } } + + return SignerUtilities.GetEncodingName(sigAlgOid) ?? sigAlgOid.GetID(); } + + private static bool IsAbsentOrEmptyParameters(Asn1Encodable parameters) + { + return parameters == null || DerNull.Instance.Equals(parameters); + } } } |