diff options
Diffstat (limited to 'crypto/src/security/ParameterUtilities.cs')
| -rw-r--r-- | crypto/src/security/ParameterUtilities.cs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/crypto/src/security/ParameterUtilities.cs b/crypto/src/security/ParameterUtilities.cs index d79f15359..d393e3d36 100644 --- a/crypto/src/security/ParameterUtilities.cs +++ b/crypto/src/security/ParameterUtilities.cs @@ -2,6 +2,7 @@ using System; using System.Collections.Generic; using Org.BouncyCastle.Asn1; +using Org.BouncyCastle.Asn1.Cms; using Org.BouncyCastle.Asn1.CryptoPro; using Org.BouncyCastle.Asn1.Kisa; using Org.BouncyCastle.Asn1.Misc; @@ -246,6 +247,30 @@ namespace Org.BouncyCastle.Security if (algorithm == null) throw new ArgumentNullException("algorithm"); + if (NistObjectIdentifiers.IdAes128Gcm.Id.Equals(algorithm) || + NistObjectIdentifiers.IdAes192Gcm.Id.Equals(algorithm) || + NistObjectIdentifiers.IdAes256Gcm.Id.Equals(algorithm)) + { + if (!(key is KeyParameter keyParameter)) + throw new ArgumentException("key data must be accessible for GCM operation"); + + var gcmParameters = GcmParameters.GetInstance(asn1Params); + + return new AeadParameters(keyParameter, gcmParameters.IcvLen * 8, gcmParameters.GetNonce()); + } + + if (NistObjectIdentifiers.IdAes128Ccm.Id.Equals(algorithm) || + NistObjectIdentifiers.IdAes192Ccm.Id.Equals(algorithm) || + NistObjectIdentifiers.IdAes256Ccm.Id.Equals(algorithm)) + { + if (!(key is KeyParameter keyParameter)) + throw new ArgumentException("key data must be accessible for CCM operation"); + + var ccmParameters = CcmParameters.GetInstance(asn1Params); + + return new AeadParameters(keyParameter, ccmParameters.IcvLen * 8, ccmParameters.GetNonce()); + } + string canonical = GetCanonicalAlgorithmName(algorithm); if (canonical == null) |