本文整理汇总了C#中ASN1类的典型用法代码示例。如果您正苦于以下问题：C# ASN1类的具体用法？C# ASN1怎么用？C# ASN1使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
ASN1类属于命名空间，在下文中一共展示了ASN1类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: VerifySignature
internal bool VerifySignature (DSA dsa)
{
if (signatureOID != "1.2.840.10040.4.3")
throw new CryptographicException ("Unsupported hash algorithm: " + signatureOID);
DSASignatureDeformatter v = new DSASignatureDeformatter (dsa);
// only SHA-1 is supported
v.SetHashAlgorithm ("SHA1");
ASN1 sign = new ASN1 (signature);
if ((sign == null) || (sign.Count != 2))
return false;
// parts may be less than 20 bytes (i.e. first bytes were 0x00)
byte[] part1 = sign [0].Value;
byte[] part2 = sign [1].Value;
byte[] sig = new byte [40];
// parts may be less than 20 bytes (i.e. first bytes were 0x00)
// parts may be more than 20 bytes (i.e. first byte > 0x80, negative)
int s1 = System.Math.Max (0, part1.Length - 20);
int e1 = System.Math.Max (0, 20 - part1.Length);
Buffer.BlockCopy (part1, s1, sig, e1, part1.Length - s1);
int s2 = System.Math.Max (0, part2.Length - 20);
int e2 = System.Math.Max (20, 40 - part2.Length);
Buffer.BlockCopy (part2, s2, sig, e2, part2.Length - s2);
return v.VerifySignature (Hash, sig);
}示例2: X509CrlEntry
internal X509CrlEntry (ASN1 entry)
{
sn = entry [0].Value;
Array.Reverse (sn);
revocationDate = ASN1Convert.ToDateTime (entry [1]);
extensions = new X509ExtensionCollection (entry [2]);
}示例3: GetType
static public KeyInfo GetType (byte[] data)
{
if (data == null)
throw new ArgumentNullException ("data");
KeyInfo ki = KeyInfo.Unknown;
try {
ASN1 top = new ASN1 (data);
if ((top.Tag == 0x30) && (top.Count > 0)) {
ASN1 firstLevel = top [0];
switch (firstLevel.Tag) {
case 0x02:
ki = KeyInfo.PrivateKey;
break;
case 0x30:
ki = KeyInfo.EncryptedPrivateKey;
break;
}
}
}
catch {
throw new CryptographicException ("invalid ASN.1 data");
}
return ki;
}示例4: ToString
static public string ToString(ASN1 seq)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < seq.Count; i++)
{
ASN1 entry = seq[i];
AppendEntry(sb, entry, true);
// separator (not on last iteration)
if (i < seq.Count - 1)
sb.Append(", ");
}
return sb.ToString();
}示例5: Decode
internal AsnDecodeStatus Decode (byte[] extension)
{
if ((extension == null) || (extension.Length == 0))
return AsnDecodeStatus.BadAsn;
_ski = String.Empty;
if (extension [0] != 0x04)
return AsnDecodeStatus.BadTag;
if (extension.Length == 2)
return AsnDecodeStatus.InformationNotAvailable;
if (extension.Length < 3)
return AsnDecodeStatus.BadLength;
try {
ASN1 ex = new ASN1 (extension);
_subjectKeyIdentifier = ex.Value;
}
catch {
return AsnDecodeStatus.BadAsn;
}
return AsnDecodeStatus.Ok;
}示例6: Encode
internal byte[] Encode ()
{
ASN1 ex = null;
int kubits = (int)_keyUsages;
byte empty = 0;
if (kubits == 0) {
ex = new ASN1 (0x03, new byte[] { empty });
} else {
// count empty bits (applicable to first byte only)
int ku = ((kubits < Byte.MaxValue) ? kubits : (kubits >> 8));
while (((ku & 0x01) == 0x00) && (empty < 8)) {
empty++;
ku >>= 1;
}
if (kubits <= Byte.MaxValue) {
ex = new ASN1 (0x03, new byte[] { empty, (byte)kubits });
} else {
ex = new ASN1 (0x03, new byte[] { empty, (byte)kubits, (byte)(kubits >> 8) });
}
}
return ex.GetBytes ();
}示例7: AppendEntry
static private void AppendEntry(StringBuilder sb, ASN1 entry, bool quotes)
{
// multiple entries are valid
for (int k = 0; k < entry.Count; k++)
{
ASN1 pair = entry[k];
ASN1 s = pair[1];
if (s == null)
continue;
ASN1 poid = pair[0];
if (poid == null)
continue;
if (poid.CompareValue(countryName))
sb.Append("C=");
else if (poid.CompareValue(organizationName))
sb.Append("O=");
else if (poid.CompareValue(organizationalUnitName))
sb.Append("OU=");
else if (poid.CompareValue(commonName))
sb.Append("CN=");
else if (poid.CompareValue(localityName))
sb.Append("L=");
else if (poid.CompareValue(stateOrProvinceName))
sb.Append("ST="); // Changed to be RFC2253 Compliant
else if (poid.CompareValue(streetAddress))
sb.Append("STREET=");
else if (poid.CompareValue(domainComponent))
sb.Append("DC=");
else if (poid.CompareValue(userid))
sb.Append("UID=");
//else if (poid.CompareValue(email))
// sb.Append("E="); // NOTE: Not part of RFC2253
else if (poid.CompareValue(dnQualifier))
sb.Append("dnQualifier=");
else if (poid.CompareValue(title))
sb.Append("T=");
else if (poid.CompareValue(surname))
sb.Append("SN=");
else if (poid.CompareValue(givenName))
sb.Append("G=");
else if (poid.CompareValue(initial))
sb.Append("I=");
else
{
// unknown OID
// sb.Append("OID."); // NOTE: Not present as RFC2253
sb.Append(ASN1Convert.ToOid(poid));
sb.Append("=");
}
string sValue = null;
// 16bits or 8bits string ? TODO not complete (+special chars!)
if (s.Tag == 0x1E)
{
// BMPSTRING
StringBuilder sb2 = new StringBuilder();
for (int j = 1; j < s.Value.Length; j += 2)
sb2.Append((char)s.Value[j]);
sValue = sb2.ToString();
}
else
{
if (s.Tag == 0x14)
sValue = Encoding.UTF7.GetString(s.Value);
else
sValue = Encoding.UTF8.GetString(s.Value);
// in some cases we must quote (") the value
// Note: this doesn't seems to conform to RFC2253
char[] specials = { ',', '+', '"', '\\', '<', '>', ';' };
if (quotes)
{
if ((sValue.IndexOfAny(specials, 0, sValue.Length) > 0) ||
sValue.StartsWith(" ") || (sValue.EndsWith(" ")))
sValue = "\"" + sValue + "\"";
}
}
sb.Append(sValue);
// separator (not on last iteration)
if (k < entry.Count - 1)
sb.Append(", ");
}
}示例8: Decode
// methods
private void Decode (byte[] data)
{
ASN1 encryptedPrivateKeyInfo = new ASN1 (data);
if (encryptedPrivateKeyInfo.Tag != 0x30)
throw new CryptographicException ("invalid EncryptedPrivateKeyInfo");
ASN1 encryptionAlgorithm = encryptedPrivateKeyInfo [0];
if (encryptionAlgorithm.Tag != 0x30)
throw new CryptographicException ("invalid encryptionAlgorithm");
ASN1 algorithm = encryptionAlgorithm [0];
if (algorithm.Tag != 0x06)
throw new CryptographicException ("invalid algorithm");
_algorithm = ASN1Convert.ToOid (algorithm);
// parameters ANY DEFINED BY algorithm OPTIONAL
if (encryptionAlgorithm.Count > 1) {
ASN1 parameters = encryptionAlgorithm [1];
if (parameters.Tag != 0x30)
throw new CryptographicException ("invalid parameters");
ASN1 salt = parameters [0];
if (salt.Tag != 0x04)
throw new CryptographicException ("invalid salt");
_salt = salt.Value;
ASN1 iterationCount = parameters [1];
if (iterationCount.Tag != 0x02)
throw new CryptographicException ("invalid iterationCount");
_iterations = ASN1Convert.ToInt32 (iterationCount);
}
ASN1 encryptedData = encryptedPrivateKeyInfo [1];
if (encryptedData.Tag != 0x04)
throw new CryptographicException ("invalid EncryptedData");
_data = encryptedData.Value;
}示例9: Encode
/*
* RSAPrivateKey ::= SEQUENCE {
* version Version,
* modulus INTEGER, -- n
* publicExponent INTEGER, -- e
* privateExponent INTEGER, -- d
* prime1 INTEGER, -- p
* prime2 INTEGER, -- q
* exponent1 INTEGER, -- d mod (p-1)
* exponent2 INTEGER, -- d mod (q-1)
* coefficient INTEGER, -- (inverse of q) mod p
* otherPrimeInfos OtherPrimeInfos OPTIONAL
* }
*/
static public byte[] Encode (RSA rsa)
{
RSAParameters param = rsa.ExportParameters (true);
ASN1 rsaPrivateKey = new ASN1 (0x30);
rsaPrivateKey.Add (new ASN1 (0x02, new byte [1] { 0x00 }));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.Modulus));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.Exponent));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.D));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.P));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.Q));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.DP));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.DQ));
rsaPrivateKey.Add (ASN1Convert.FromUnsignedBigInteger (param.InverseQ));
return rsaPrivateKey.GetBytes ();
}示例10: GetBytes
public byte[] GetBytes ()
{
ASN1 privateKeyAlgorithm = new ASN1 (0x30);
privateKeyAlgorithm.Add (ASN1Convert.FromOid (_algorithm));
privateKeyAlgorithm.Add (new ASN1 (0x05)); // ASN.1 NULL
ASN1 pki = new ASN1 (0x30);
pki.Add (new ASN1 (0x02, new byte [1] { (byte) _version }));
pki.Add (privateKeyAlgorithm);
pki.Add (new ASN1 (0x04, _key));
if (_list.Count > 0) {
ASN1 attributes = new ASN1 (0xA0);
foreach (ASN1 attribute in _list) {
attributes.Add (attribute);
}
pki.Add (attributes);
}
return pki.GetBytes ();
}示例11: Read
protected override void Read (TlsBuffer incoming)
{
var length = incoming.ReadByte ();
for (int i = 0; i < length; i++)
Parameters.CertificateTypes.Add ((ClientCertificateType)incoming.ReadByte ());
if (Protocol == TlsProtocolCode.Tls12) {
var length2 = incoming.ReadInt16 ();
if ((length2 % 2) != 0)
throw new TlsException (AlertDescription.IlegalParameter);
var signatureTypes = new SignatureAndHashAlgorithm [length2 >> 1];
for (int i = 0; i < signatureTypes.Length; i++)
Parameters.SignatureParameters.SignatureAndHashAlgorithms.Add (new SignatureAndHashAlgorithm (incoming));
}
var length3 = incoming.ReadInt16 ();
if (incoming.Remaining != length3)
throw new TlsException (AlertDescription.DecodeError);
/*
* Read requested certificate authorities (Distinguised Names)
*
* Name ::= SEQUENCE OF RelativeDistinguishedName
*
* RelativeDistinguishedName ::= SET OF AttributeValueAssertion
*
* AttributeValueAssertion ::= SEQUENCE {
* attributeType OBJECT IDENTIFIER
* attributeValue ANY
* }
*
*/
while (incoming.Remaining > 0) {
var rdn = new ASN1 (incoming.ReadBytes (incoming.ReadInt16 ()));
Parameters.CertificateAuthorities.Add (X501.ToString (rdn));
}
}示例12: Encode
internal byte[] Encode ()
{
ASN1 ex = new ASN1 (0x04, _subjectKeyIdentifier);
return ex.GetBytes ();
}示例13: Parse
private void Parse (byte[] crl)
{
string e = "Input data cannot be coded as a valid CRL.";
try {
// CertificateList ::= SEQUENCE {
ASN1 encodedCRL = new ASN1 (encoded);
if ((encodedCRL.Tag != 0x30) || (encodedCRL.Count != 3))
throw new CryptographicException (e);
// CertificateList / TBSCertList,
ASN1 toBeSigned = encodedCRL [0];
if ((toBeSigned.Tag != 0x30) || (toBeSigned.Count < 3))
throw new CryptographicException (e);
int n = 0;
// CertificateList / TBSCertList / Version OPTIONAL, -- if present, MUST be v2
if (toBeSigned [n].Tag == 0x02) {
version = (byte) (toBeSigned [n++].Value [0] + 1);
}
else
version = 1; // DEFAULT
// CertificateList / TBSCertList / AlgorithmIdentifier,
signatureOID = ASN1Convert.ToOid (toBeSigned [n++][0]);
// CertificateList / TBSCertList / Name,
issuer = X501.ToString (toBeSigned [n++]);
// CertificateList / TBSCertList / Time,
thisUpdate = ASN1Convert.ToDateTime (toBeSigned [n++]);
// CertificateList / TBSCertList / Time OPTIONAL,
ASN1 next = toBeSigned [n++];
if ((next.Tag == 0x17) || (next.Tag == 0x18)) {
nextUpdate = ASN1Convert.ToDateTime (next);
next = toBeSigned [n++];
}
// CertificateList / TBSCertList / revokedCertificates SEQUENCE OF SEQUENCE {
entries = new ArrayList ();
// this is OPTIONAL so it may not be present if no entries exists
if ((next != null) && (next.Tag == 0x30)) {
ASN1 revokedCertificates = next;
for (int i=0; i < revokedCertificates.Count; i++) {
entries.Add (new X509CrlEntry (revokedCertificates [i]));
}
} else {
n--;
}
// CertificateList / TBSCertList / crlExtensions [0] Extensions OPTIONAL }
ASN1 extns = toBeSigned [n];
if ((extns != null) && (extns.Tag == 0xA0) && (extns.Count == 1))
extensions = new X509ExtensionCollection (extns [0]);
else
extensions = new X509ExtensionCollection (null); // result in a read only object
// CertificateList / AlgorithmIdentifier
string signatureAlgorithm = ASN1Convert.ToOid (encodedCRL [1][0]);
if (signatureOID != signatureAlgorithm)
throw new CryptographicException (e + " [Non-matching signature algorithms in CRL]");
// CertificateList / BIT STRING
byte[] bitstring = encodedCRL [2].Value;
// first byte contains unused bits in first byte
signature = new byte [bitstring.Length - 1];
Buffer.BlockCopy (bitstring, 1, signature, 0, signature.Length);
}
catch {
throw new CryptographicException (e);
}
}示例14: GetBytes
public byte[] GetBytes ()
{
ASN1 sequence = new ASN1 (0x30);
sequence.Add (new ASN1 (0x02, sn));
sequence.Add (ASN1Convert.FromDateTime (revocationDate));
if (extensions.Count > 0)
sequence.Add (new ASN1 (extensions.GetBytes ()));
return sequence.GetBytes ();
}示例15: Encode_v15
// PKCS #1 v.2.1, Section 9.2
// EMSA-PKCS1-v1_5-Encode
public static byte[] Encode_v15 (HashAlgorithm hash, byte[] hashValue, int emLength)
{
if (hashValue.Length != (hash.HashSize >> 3))
throw new CryptographicException ("bad hash length for " + hash.ToString ());
// DigestInfo ::= SEQUENCE {
// digestAlgorithm AlgorithmIdentifier,
// digest OCTET STRING
// }
byte[] t = null;
string oid = CryptoConfig.MapNameToOID (hash.ToString ());
if (oid != null)
{
ASN1 digestAlgorithm = new ASN1 (0x30);
digestAlgorithm.Add (new ASN1 (CryptoConfig.EncodeOID (oid)));
digestAlgorithm.Add (new ASN1 (0x05)); // NULL
ASN1 digest = new ASN1 (0x04, hashValue);
ASN1 digestInfo = new ASN1 (0x30);
digestInfo.Add (digestAlgorithm);
digestInfo.Add (digest);
t = digestInfo.GetBytes ();
}
else
{
// There are no valid OID, in this case t = hashValue
// This is the case of the MD5SHA hash algorithm
t = hashValue;
}
Buffer.BlockCopy (hashValue, 0, t, t.Length - hashValue.Length, hashValue.Length);
int PSLength = System.Math.Max (8, emLength - t.Length - 3);
// PS = PSLength of 0xff
// EM = 0x00 | 0x01 | PS | 0x00 | T
byte[] EM = new byte [PSLength + t.Length + 3];
EM [1] = 0x01;
for (int i=2; i < PSLength + 2; i++)
EM[i] = 0xff;
Buffer.BlockCopy (t, 0, EM, PSLength + 3, t.Length);
return EM;
}