diff options
Diffstat (limited to 'crypto/src/util')
| -rw-r--r-- | crypto/src/util/ssh/OpenSSHPrivateKeyUtil.cs | 302 | ||||
| -rw-r--r-- | crypto/src/util/ssh/OpenSSHPublicKeyUtil.cs | 168 | ||||
| -rw-r--r-- | crypto/src/util/ssh/SSHBuffer.cs | 151 | ||||
| -rw-r--r-- | crypto/src/util/ssh/SSHBuilder.cs | 79 | ||||
| -rw-r--r-- | crypto/src/util/ssh/SSHNamedCurves.cs | 93 |
5 files changed, 0 insertions, 793 deletions
diff --git a/crypto/src/util/ssh/OpenSSHPrivateKeyUtil.cs b/crypto/src/util/ssh/OpenSSHPrivateKeyUtil.cs deleted file mode 100644 index 0ddd90773..000000000 --- a/crypto/src/util/ssh/OpenSSHPrivateKeyUtil.cs +++ /dev/null @@ -1,302 +0,0 @@ -using System; - -using Org.BouncyCastle.Asn1; -using Org.BouncyCastle.Asn1.Nist; -using Org.BouncyCastle.Asn1.Pkcs; -using Org.BouncyCastle.Asn1.Sec; -using Org.BouncyCastle.Asn1.X9; -using Org.BouncyCastle.Crypto; -using Org.BouncyCastle.Crypto.Parameters; -using Org.BouncyCastle.Math; -using Org.BouncyCastle.Pkcs; - -namespace Org.BouncyCastle.Utilities.SSH -{ - public static class OpenSshPrivateKeyUtilities - { - /// <summary>Magic value for proprietary OpenSSH private key.</summary> - /// <remarks>C string so null terminated.</remarks> - private static readonly byte[] AUTH_MAGIC = Strings.ToByteArray("openssh-key-v1\0"); - - /** - * Encode a cipher parameters into an OpenSSH private key. - * This does not add headers like ----BEGIN RSA PRIVATE KEY---- - * - * @param parameters the cipher parameters. - * @return a byte array - */ - public static byte[] EncodePrivateKey(AsymmetricKeyParameter parameters) - { - if (parameters == null) - throw new ArgumentNullException(nameof(parameters)); - - if (parameters is RsaPrivateCrtKeyParameters || parameters is ECPrivateKeyParameters) - { - PrivateKeyInfo pInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(parameters); - return pInfo.ParsePrivateKey().GetEncoded(); - } - else if (parameters is DsaPrivateKeyParameters dsaPrivateKey) - { - DsaParameters dsaparameters = dsaPrivateKey.Parameters; - - Asn1EncodableVector vec = new Asn1EncodableVector - { - new DerInteger(0), - new DerInteger(dsaparameters.P), - new DerInteger(dsaparameters.Q), - new DerInteger(dsaparameters.G) - }; - - // public key = g.modPow(x, p); - BigInteger pubKey = dsaparameters.P.ModPow(dsaPrivateKey.X, dsaparameters.P); - vec.Add(new DerInteger(pubKey)); - vec.Add(new DerInteger(dsaPrivateKey.X)); - try - { - return new DerSequence(vec).GetEncoded(); - } - catch (Exception ex) - { - throw new InvalidOperationException("unable to encode DSAPrivateKeyParameters " + ex.Message); - } - } - else if (parameters is Ed25519PrivateKeyParameters ed25519PrivateKey) - { - Ed25519PublicKeyParameters publicKeyParameters = ed25519PrivateKey.GeneratePublicKey(); - - SshBuilder builder = new SshBuilder(); - builder.WriteBytes(AUTH_MAGIC); - builder.WriteString("none"); // cipher name - builder.WriteString("none"); // KDF name - builder.WriteString(""); // KDF options - - builder.U32(1); // Number of keys - - { - byte[] pkEncoded = OpenSshPublicKeyUtilities.EncodePublicKey(publicKeyParameters); - builder.WriteBlock(pkEncoded); - } - - { - SshBuilder pkBuild = new SshBuilder(); - - int checkint = CryptoServicesRegistrar.GetSecureRandom().NextInt(); - pkBuild.U32((uint)checkint); - pkBuild.U32((uint)checkint); - - pkBuild.WriteString("ssh-ed25519"); - - // Public key (as part of private key pair) - byte[] pubKeyEncoded = publicKeyParameters.GetEncoded(); - pkBuild.WriteBlock(pubKeyEncoded); - - // The private key in SSH is 64 bytes long and is the concatenation of the private and the public keys - pkBuild.WriteBlock(Arrays.Concatenate(ed25519PrivateKey.GetEncoded(), pubKeyEncoded)); - - // Comment for this private key (empty) - pkBuild.WriteString(""); - - builder.WriteBlock(pkBuild.GetPaddedBytes()); - } - - return builder.GetBytes(); - } - - throw new ArgumentException("unable to convert " + parameters.GetType().Name + " to openssh private key"); - - } - - /** - * Parse a private key. - * <p/> - * This method accepts the body of the OpenSSH private key. - * The easiest way to extract the body is to use PemReader, for example: - * <p/> - * byte[] blob = new PemReader([reader]).readPemObject().getContent(); - * CipherParameters params = parsePrivateKeyBlob(blob); - * - * @param blob The key. - * @return A cipher parameters instance. - */ - public static AsymmetricKeyParameter ParsePrivateKeyBlob(byte[] blob) - { - AsymmetricKeyParameter result = null; - - if (blob[0] == 0x30) - { - Asn1Sequence sequence = Asn1Sequence.GetInstance(blob); - - if (sequence.Count == 6) - { - if (AllIntegers(sequence) && ((DerInteger)sequence[0]).PositiveValue.Equals(BigIntegers.Zero)) - { - // length of 6 and all Integers -- DSA - result = new DsaPrivateKeyParameters( - ((DerInteger)sequence[5]).PositiveValue, - new DsaParameters( - ((DerInteger)sequence[1]).PositiveValue, - ((DerInteger)sequence[2]).PositiveValue, - ((DerInteger)sequence[3]).PositiveValue) - ); - } - } - else if (sequence.Count == 9) - { - if (AllIntegers(sequence) && ((DerInteger)sequence[0]).PositiveValue.Equals(BigIntegers.Zero)) - { - // length of 8 and all Integers -- RSA - RsaPrivateKeyStructure rsaPrivateKey = RsaPrivateKeyStructure.GetInstance(sequence); - - result = new RsaPrivateCrtKeyParameters( - rsaPrivateKey.Modulus, - rsaPrivateKey.PublicExponent, - rsaPrivateKey.PrivateExponent, - rsaPrivateKey.Prime1, - rsaPrivateKey.Prime2, - rsaPrivateKey.Exponent1, - rsaPrivateKey.Exponent2, - rsaPrivateKey.Coefficient); - } - } - else if (sequence.Count == 4) - { - if (sequence[3] is Asn1TaggedObject && sequence[2] is Asn1TaggedObject) - { - ECPrivateKeyStructure ecPrivateKey = ECPrivateKeyStructure.GetInstance(sequence); - DerObjectIdentifier curveOID = DerObjectIdentifier.GetInstance(ecPrivateKey.GetParameters()); - X9ECParameters x9Params = ECNamedCurveTable.GetByOid(curveOID); - result = new ECPrivateKeyParameters( - ecPrivateKey.GetKey(), - new ECNamedDomainParameters( - curveOID, - x9Params)); - } - } - } - else - { - SshBuffer kIn = new SshBuffer(AUTH_MAGIC, blob); - - String cipherName = kIn.ReadString(); - if (!"none".Equals(cipherName)) - { - throw new InvalidOperationException("encrypted keys not supported"); - } - - // KDF name - kIn.SkipBlock(); - - // KDF options - kIn.SkipBlock(); - - int publicKeyCount = kIn.ReadU32(); - if (publicKeyCount != 1) - { - throw new InvalidOperationException("multiple keys not supported"); - } - - // Burn off public key. - OpenSshPublicKeyUtilities.ParsePublicKey(kIn.ReadBlock()); - - byte[] privateKeyBlock = kIn.ReadPaddedBlock(); - - if (kIn.HasRemaining()) - { - throw new InvalidOperationException("decoded key has trailing data"); - } - - SshBuffer pkIn = new SshBuffer(privateKeyBlock); - int check1 = pkIn.ReadU32(); - int check2 = pkIn.ReadU32(); - - if (check1 != check2) - { - throw new InvalidOperationException("private key check values are not the same"); - } - - String keyType = pkIn.ReadString(); - - if ("ssh-ed25519".Equals(keyType)) - { - // Public key - pkIn.ReadBlock(); - // Private key value.. - byte[] edPrivateKey = pkIn.ReadBlock(); - if (edPrivateKey.Length != Ed25519PrivateKeyParameters.KeySize + Ed25519PublicKeyParameters.KeySize) - { - throw new InvalidOperationException("private key value of wrong length"); - } - - result = new Ed25519PrivateKeyParameters(edPrivateKey, 0); - } - else if (keyType.StartsWith("ecdsa")) - { - DerObjectIdentifier oid = SshNamedCurves.GetByName(Strings.FromByteArray(pkIn.ReadBlock())) ?? - throw new InvalidOperationException("OID not found for: " + keyType); - X9ECParameters curveParams = NistNamedCurves.GetByOid(oid) ?? throw new InvalidOperationException("Curve not found for: " + oid); - - // Skip public key. - pkIn.ReadBlock(); - byte[] privKey = pkIn.ReadBlock(); - - result = new ECPrivateKeyParameters(new BigInteger(1, privKey), - new ECNamedDomainParameters(oid, curveParams)); - } - else if (keyType.StartsWith("ssh-rsa")) - { - BigInteger modulus = new BigInteger(1, pkIn.ReadBlock()); - BigInteger pubExp = new BigInteger(1, pkIn.ReadBlock()); - BigInteger privExp = new BigInteger(1, pkIn.ReadBlock()); - BigInteger coef = new BigInteger(1, pkIn.ReadBlock()); - BigInteger p = new BigInteger(1, pkIn.ReadBlock()); - BigInteger q = new BigInteger(1, pkIn.ReadBlock()); - - BigInteger pSub1 = p.Subtract(BigIntegers.One); - BigInteger qSub1 = q.Subtract(BigIntegers.One); - BigInteger dP = privExp.Remainder(pSub1); - BigInteger dQ = privExp.Remainder(qSub1); - - result = new RsaPrivateCrtKeyParameters( - modulus, - pubExp, - privExp, - p, - q, - dP, - dQ, - coef); - } - - // Comment for private key - pkIn.SkipBlock(); - - if (pkIn.HasRemaining()) - { - throw new ArgumentException("private key block has trailing data"); - } - } - - if (result == null) - { - throw new ArgumentException("unable to parse key"); - } - - return result; - } - - /** - * allIntegers returns true if the sequence holds only DerInteger types. - **/ - private static Boolean AllIntegers(Asn1Sequence sequence) - { - for (int t = 0; t < sequence.Count; t++) - { - if (!(sequence[t] is DerInteger)) - { - return false; - } - } - return true; - } -} -} diff --git a/crypto/src/util/ssh/OpenSSHPublicKeyUtil.cs b/crypto/src/util/ssh/OpenSSHPublicKeyUtil.cs deleted file mode 100644 index 02e6928e0..000000000 --- a/crypto/src/util/ssh/OpenSSHPublicKeyUtil.cs +++ /dev/null @@ -1,168 +0,0 @@ -using System; - -using Org.BouncyCastle.Asn1; -using Org.BouncyCastle.Asn1.X9; -using Org.BouncyCastle.Crypto; -using Org.BouncyCastle.Crypto.Parameters; -using Org.BouncyCastle.Math; - -namespace Org.BouncyCastle.Utilities.SSH -{ - public static class OpenSshPublicKeyUtilities - { - private static readonly String RSA = "ssh-rsa"; - private static readonly String ECDSA = "ecdsa"; - private static readonly String ED_25519 = "ssh-ed25519"; - private static readonly String DSS = "ssh-dss"; - - /** - * Parse a public key. - * <p/> - * This method accepts the bytes that are Base64 encoded in an OpenSSH public key file. - * - * @param encoded The key. - * @return An AsymmetricKeyParameter instance. - */ - public static AsymmetricKeyParameter ParsePublicKey(byte[] encoded) - { - SshBuffer buffer = new SshBuffer(encoded); - return ParsePublicKey(buffer); - } - - /** - * Encode a public key from an AsymmetricKeyParameter instance. - * - * @param cipherParameters The key to encode. - * @return the key OpenSSH encoded. - * @throws IOException - */ - public static byte[] EncodePublicKey(AsymmetricKeyParameter cipherParameters) - { - if (cipherParameters == null) - { - throw new ArgumentException("cipherParameters was null."); - } - - if (cipherParameters is RsaKeyParameters) - { - if (cipherParameters.IsPrivate) - { - throw new ArgumentException("RSAKeyParamaters was for encryption"); - } - - RsaKeyParameters rsaPubKey = (RsaKeyParameters)cipherParameters; - - SshBuilder builder = new SshBuilder(); - builder.WriteString(RSA); - builder.WriteBigNum(rsaPubKey.Exponent); - builder.WriteBigNum(rsaPubKey.Modulus); - - return builder.GetBytes(); - - } - else if (cipherParameters is ECPublicKeyParameters ecPublicKey) - { - SshBuilder builder = new SshBuilder(); - - // - // checked for named curve parameters.. - // - String name = SshNamedCurves.GetNameForParameters(ecPublicKey.Parameters); - - if (name == null) - { - throw new ArgumentException("unable to derive ssh curve name for " + ecPublicKey.Parameters.Curve.GetType().Name); - } - - builder.WriteString(ECDSA + "-sha2-" + name); // Magic - builder.WriteString(name); - builder.WriteBlock(ecPublicKey.Q.GetEncoded(false)); //Uncompressed - return builder.GetBytes(); - } - else if (cipherParameters is DsaPublicKeyParameters dsaPubKey) - { - DsaParameters dsaParams = dsaPubKey.Parameters; - - SshBuilder builder = new SshBuilder(); - builder.WriteString(DSS); - builder.WriteBigNum(dsaParams.P); - builder.WriteBigNum(dsaParams.Q); - builder.WriteBigNum(dsaParams.G); - builder.WriteBigNum(dsaPubKey.Y); - return builder.GetBytes(); - } - else if (cipherParameters is Ed25519PublicKeyParameters ed25519PublicKey) - { - SshBuilder builder = new SshBuilder(); - builder.WriteString(ED_25519); - builder.WriteBlock(ed25519PublicKey.GetEncoded()); - return builder.GetBytes(); - } - - throw new ArgumentException("unable to convert " + cipherParameters.GetType().Name + " to private key"); - } - - /** - * Parse a public key from an SSHBuffer instance. - * - * @param buffer containing the SSH public key. - * @return A CipherParameters instance. - */ - private static AsymmetricKeyParameter ParsePublicKey(SshBuffer buffer) - { - AsymmetricKeyParameter result = null; - - string magic = buffer.ReadString(); - if (RSA.Equals(magic)) - { - BigInteger e = buffer.ReadBigNumPositive(); - BigInteger n = buffer.ReadBigNumPositive(); - result = new RsaKeyParameters(false, n, e); - } - else if (DSS.Equals(magic)) - { - BigInteger p = buffer.ReadBigNumPositive(); - BigInteger q = buffer.ReadBigNumPositive(); - BigInteger g = buffer.ReadBigNumPositive(); - BigInteger pubKey = buffer.ReadBigNumPositive(); - - result = new DsaPublicKeyParameters(pubKey, new DsaParameters(p, q, g)); - } - else if (magic.StartsWith(ECDSA)) - { - String curveName = buffer.ReadString(); - DerObjectIdentifier oid = SshNamedCurves.GetByName(curveName); - X9ECParameters x9ECParameters = SshNamedCurves.GetParameters(oid) ?? - throw new InvalidOperationException("unable to find curve for " + magic + " using curve name " + curveName); - var curve = x9ECParameters.Curve; - byte[] pointRaw = buffer.ReadBlock(); - - result = new ECPublicKeyParameters( - curve.DecodePoint(pointRaw), - new ECNamedDomainParameters(oid, x9ECParameters)); - } - else if (ED_25519.Equals(magic)) - { - byte[] pubKeyBytes = buffer.ReadBlock(); - if (pubKeyBytes.Length != Ed25519PublicKeyParameters.KeySize) - { - throw new InvalidOperationException("public key value of wrong length"); - } - - result = new Ed25519PublicKeyParameters(pubKeyBytes, 0); - } - - if (result == null) - { - throw new ArgumentException("unable to parse key"); - } - - if (buffer.HasRemaining()) - { - throw new ArgumentException("decoded key has trailing data"); - } - - return result; - } - } -} diff --git a/crypto/src/util/ssh/SSHBuffer.cs b/crypto/src/util/ssh/SSHBuffer.cs deleted file mode 100644 index 795641032..000000000 --- a/crypto/src/util/ssh/SSHBuffer.cs +++ /dev/null @@ -1,151 +0,0 @@ -using System; - -using Org.BouncyCastle.Math; - -namespace Org.BouncyCastle.Utilities.SSH -{ - internal class SshBuffer - { - private readonly byte[] buffer; - private int pos = 0; - - internal SshBuffer(byte[] magic, byte[] buffer) - { - this.buffer = buffer; - for (int i = 0; i != magic.Length; i++) - { - if (magic[i] != buffer[i]) - { - throw new ArgumentException("magic-number incorrect"); - } - } - - pos += magic.Length; - } - - internal SshBuffer(byte[] buffer) - { - this.buffer = buffer; - } - - public int ReadU32() - { - if (pos > (buffer.Length - 4)) - { - throw new ArgumentOutOfRangeException("4 bytes for U32 exceeds buffer."); - } - - int i = (buffer[pos++] & 0xFF) << 24; - i |= (buffer[pos++] & 0xFF) << 16; - i |= (buffer[pos++] & 0xFF) << 8; - i |= (buffer[pos++] & 0xFF); - - return i; - } - - public String ReadString() - { - return Strings.FromByteArray(ReadBlock()); - } - - public byte[] ReadBlock() - { - int len = ReadU32(); - if (len == 0) - { - return new byte[0]; - } - - if (pos > (buffer.Length - len)) - { - throw new ArgumentException("not enough data for block"); - } - - int start = pos; pos += len; - return Arrays.CopyOfRange(buffer, start, pos); - } - - public void SkipBlock() - { - int len = ReadU32(); - if (pos > (buffer.Length - len)) - { - throw new ArgumentException("not enough data for block"); - } - - pos += len; - } - - public byte[] ReadPaddedBlock() - { - return ReadPaddedBlock(8); - } - - public byte[] ReadPaddedBlock(int blockSize) - { - int len = ReadU32(); - if (len == 0) - { - return new byte[0]; - } - - if (pos > (buffer.Length - len)) - { - throw new ArgumentException("not enough data for block"); - } - - int align = len % blockSize; - if (0 != align) - { - throw new ArgumentException("missing padding"); - } - - int start = pos; pos += len; - int end = pos; - - if (len > 0) - { - // TODO If encryption is supported, should be constant-time - int lastByte = buffer[pos - 1] & 0xFF; - if (0 < lastByte && lastByte < blockSize) - { - int padCount = lastByte; - end -= padCount; - - for (int i = 1, padPos = end; i <= padCount; ++i, ++padPos) - { - if (i != (buffer[padPos] & 0xFF)) - { - throw new ArgumentException("incorrect padding"); - } - } - } - } - - return Arrays.CopyOfRange(buffer, start, end); - } - - public BigInteger ReadBigNumPositive() - { - int len = ReadU32(); - if (pos + len > buffer.Length) - { - throw new ArgumentException("not enough data for big num"); - } - - int start = pos; pos += len; - byte[] d = Arrays.CopyOfRange(buffer, start, pos); - return new BigInteger(1, d); - } - - public byte[] GetBuffer() - { - return Arrays.Clone(buffer); - } - - public Boolean HasRemaining() - { - return pos < buffer.Length; - } - } -} diff --git a/crypto/src/util/ssh/SSHBuilder.cs b/crypto/src/util/ssh/SSHBuilder.cs deleted file mode 100644 index 24121d0d8..000000000 --- a/crypto/src/util/ssh/SSHBuilder.cs +++ /dev/null @@ -1,79 +0,0 @@ -using System; -using System.IO; - -using Org.BouncyCastle.Math; - -namespace Org.BouncyCastle.Utilities.SSH -{ - internal class SshBuilder - { - private readonly MemoryStream bos = new MemoryStream(); - - public void U32(uint value) - { - bos.WriteByte(Convert.ToByte((value >> 24) & 0xFF)); - bos.WriteByte(Convert.ToByte((value >> 16) & 0xFF)); - bos.WriteByte(Convert.ToByte((value >> 8) & 0xFF)); - bos.WriteByte(Convert.ToByte(value & 0xFF)); - } - - public void WriteBigNum(BigInteger n) - { - WriteBlock(n.ToByteArray()); - } - - public void WriteBlock(byte[] value) - { - U32((uint)value.Length); - try - { - bos.Write(value, 0, value.Length); - } - catch (IOException e) - { - throw new InvalidOperationException(e.Message, e); - } - } - - public void WriteBytes(byte[] value) - { - try - { - bos.Write(value, 0, value.Length); - } - catch (IOException e) - { - throw new InvalidOperationException(e.Message, e); - } - } - - public void WriteString(String str) - { - WriteBlock(Strings.ToByteArray(str)); - } - - public byte[] GetBytes() - { - return bos.ToArray(); - } - - public byte[] GetPaddedBytes() - { - return GetPaddedBytes(8); - } - - public byte[] GetPaddedBytes(int blockSize) - { - int align = (int)bos.Length % blockSize; - if (0 != align) - { - int padCount = blockSize - align; - for (int i = 1; i <= padCount; ++i) - { - bos.WriteByte(Convert.ToByte(i)); - } - } - return bos.ToArray(); - } - } -} diff --git a/crypto/src/util/ssh/SSHNamedCurves.cs b/crypto/src/util/ssh/SSHNamedCurves.cs deleted file mode 100644 index 6839627b8..000000000 --- a/crypto/src/util/ssh/SSHNamedCurves.cs +++ /dev/null @@ -1,93 +0,0 @@ -using System.Collections.Generic; -using System.Linq; - -using Org.BouncyCastle.Asn1; -using Org.BouncyCastle.Asn1.Nist; -using Org.BouncyCastle.Asn1.Sec; -using Org.BouncyCastle.Asn1.X9; -using Org.BouncyCastle.Crypto.EC; -using Org.BouncyCastle.Crypto.Parameters; -using Org.BouncyCastle.Math.EC; - -namespace Org.BouncyCastle.Utilities.SSH -{ - public class SshNamedCurves - { - private static readonly Dictionary<string, DerObjectIdentifier> OidMap = - new Dictionary<string, DerObjectIdentifier> - { - { "nistp256", SecObjectIdentifiers.SecP256r1 }, - { "nistp384", SecObjectIdentifiers.SecP384r1 }, - { "nistp521", SecObjectIdentifiers.SecP521r1 }, - { "nistk163", SecObjectIdentifiers.SecT163k1 }, - { "nistp192", SecObjectIdentifiers.SecP192r1 }, - { "nistp224", SecObjectIdentifiers.SecP224r1 }, - { "nistk233", SecObjectIdentifiers.SecT233k1 }, - { "nistb233", SecObjectIdentifiers.SecT233r1 }, - { "nistk283", SecObjectIdentifiers.SecT283k1 }, - { "nistk409", SecObjectIdentifiers.SecT409k1 }, - { "nistb409", SecObjectIdentifiers.SecT409r1 }, - { "nistt571", SecObjectIdentifiers.SecT571k1 } - }; - - - private static readonly Dictionary<string, string> CurveNameToSSHName = - new Dictionary<string, string> - { - {"secp256r1", "nistp256"}, - {"secp384r1", "nistp384"}, - {"secp521r1", "nistp521"}, - {"sect163k1", "nistk163"}, - {"secp192r1", "nistp192"}, - {"secp224r1", "nistp224"}, - {"sect233k1", "nistk233"}, - {"sect233r1", "nistb233"}, - {"sect283k1", "nistk283"}, - {"sect409k1", "nistk409"}, - {"sect409r1", "nistb409"}, - {"sect571k1", "nistt571"} - }; - - private static readonly Dictionary<ECCurve, string> CurveMap = - CustomNamedCurves.Names.ToDictionary(k => CustomNamedCurves.GetByNameLazy(k).Curve, v => v); - - private static readonly Dictionary<DerObjectIdentifier, string> OidToName = - OidMap.ToDictionary(k => k.Value, v => v.Key); - - - public static DerObjectIdentifier GetByName(string sshName) - { - return OidMap[sshName]; - } - - public static X9ECParameters GetParameters(string sshName) - { - return NistNamedCurves.GetByOid(OidMap[sshName.ToLower()]); - } - - public static X9ECParameters GetParameters(DerObjectIdentifier oid) - { - return NistNamedCurves.GetByOid(oid); - } - - public static string GetName(DerObjectIdentifier oid) - { - return OidToName[oid]; - } - - public static string GetNameForParameters(ECDomainParameters parameters) - { - if (parameters is ECNamedDomainParameters) - { - return GetName(((ECNamedDomainParameters)parameters).Name); - } - - return GetNameForParameters(parameters.Curve); - } - - public static string GetNameForParameters(ECCurve curve) - { - return CurveNameToSSHName[CurveMap[curve]]; - } - } -} |