// Note: Errors are reported by throwing an IOException
internal static StrongNameKeys CreateHelper(ImmutableArray <byte> keyFileContent, string keyFilePath, bool hasCounterSignature)
{
ImmutableArray <byte> keyPair;
ImmutableArray <byte> publicKey;
RSAParameters? privateKey = null;
// Check the key pair cache
var cachedKeyPair = s_lastSeenKeyPair;
if (cachedKeyPair != null && keyFileContent == cachedKeyPair.Item1)
{
keyPair = cachedKeyPair.Item1;
publicKey = cachedKeyPair.Item2;
privateKey = cachedKeyPair.Item3;
}
else
{
if (MetadataHelpers.IsValidPublicKey(keyFileContent))
{
publicKey = keyFileContent;
keyPair = default(ImmutableArray <byte>);
}
else if (CryptoBlobParser.TryParseKey(keyFileContent, out publicKey, out privateKey))
{
keyPair = keyFileContent;
}
else
{
throw new IOException(CodeAnalysisResources.InvalidPublicKey);
}
// Cache the key pair
cachedKeyPair = new Tuple <ImmutableArray <byte>, ImmutableArray <byte>, RSAParameters?>(keyPair, publicKey, privateKey);
Interlocked.Exchange(ref s_lastSeenKeyPair, cachedKeyPair);
}
return(new StrongNameKeys(keyPair, publicKey, privateKey, null, keyFilePath, hasCounterSignature));
}
internal static bool IsValidPublicKey(ImmutableArray <byte> bytes) => CryptoBlobParser.IsValidPublicKey(bytes);