| private ExtractKeyData ( char passPhrase ) : byte[] | ||
| passPhrase | char | |
| return | byte[] | |
internal static PgpSecretKey DoCopyWithNewPassword(PgpSecretKey key, byte[] rawOldPassPhrase, byte[] rawNewPassPhrase, bool clearPassPhrase, SymmetricKeyAlgorithmTag newEncAlgorithm, SecureRandom rand)
{
if (key.IsPrivateKeyEmpty)
{
throw new PgpException("no private key in this SecretKey - public key present only.");
}
byte[] array = key.ExtractKeyData(rawOldPassPhrase, clearPassPhrase);
int num = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
PublicKeyPacket publicKeyPacket = key.secret.PublicKeyPacket;
byte[] array2;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
num = 0;
if (key.secret.S2kUsage == 254)
{
array2 = new byte[array.Length - 18];
global::System.Array.Copy((global::System.Array)array, 0, (global::System.Array)array2, 0, array2.Length - 2);
byte[] array3 = Checksum(useSha1: false, array2, array2.Length - 2);
array2[array2.Length - 2] = array3[0];
array2[array2.Length - 1] = array3[1];
}
else
{
array2 = array;
}
}
else
{
if (num == 0)
{
num = 255;
}
try
{
array2 = ((publicKeyPacket.Version < 4) ? EncryptKeyDataV3(array, newEncAlgorithm, rawNewPassPhrase, clearPassPhrase, rand, out s2k, out iv) : EncryptKeyDataV4(array, newEncAlgorithm, HashAlgorithmTag.Sha1, rawNewPassPhrase, clearPassPhrase, rand, out s2k, out iv));
}
catch (PgpException ex)
{
throw ex;
}
catch (global::System.Exception exception)
{
throw new PgpException("Exception encrypting key", exception);
}
}
SecretKeyPacket secretKeyPacket = ((!(key.secret is SecretSubkeyPacket)) ? new SecretKeyPacket(publicKeyPacket, newEncAlgorithm, num, s2k, iv, array2) : new SecretSubkeyPacket(publicKeyPacket, newEncAlgorithm, num, s2k, iv, array2));
return(new PgpSecretKey(secretKeyPacket, key.pub));
}
internal static PgpSecretKey DoCopyWithNewPassword(
PgpSecretKey key,
byte[] rawOldPassPhrase,
byte[] rawNewPassPhrase,
bool clearPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
if (key.IsPrivateKeyEmpty)
throw new PgpException("no private key in this SecretKey - public key present only.");
byte[] rawKeyData = key.ExtractKeyData(rawOldPassPhrase, clearPassPhrase);
int s2kUsage = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
byte[] keyData;
PublicKeyPacket pubKeyPacket = key.secret.PublicKeyPacket;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
s2kUsage = SecretKeyPacket.UsageNone;
if (key.secret.S2kUsage == SecretKeyPacket.UsageSha1) // SHA-1 hash, need to rewrite Checksum
{
keyData = new byte[rawKeyData.Length - 18];
Array.Copy(rawKeyData, 0, keyData, 0, keyData.Length - 2);
byte[] check = Checksum(false, keyData, keyData.Length - 2);
keyData[keyData.Length - 2] = check[0];
keyData[keyData.Length - 1] = check[1];
}
else
{
keyData = rawKeyData;
}
}
else
{
if (s2kUsage == SecretKeyPacket.UsageNone)
{
s2kUsage = SecretKeyPacket.UsageChecksum;
}
try
{
if (pubKeyPacket.Version >= 4)
{
keyData = EncryptKeyDataV4(rawKeyData, newEncAlgorithm, HashAlgorithmTag.Sha1, rawNewPassPhrase, clearPassPhrase, rand, out s2k, out iv);
}
else
{
keyData = EncryptKeyDataV3(rawKeyData, newEncAlgorithm, rawNewPassPhrase, clearPassPhrase, rand, out s2k, out iv);
}
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception encrypting key", e);
}
}
SecretKeyPacket secret;
if (key.secret is SecretSubkeyPacket)
{
secret = new SecretSubkeyPacket(pubKeyPacket, newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
else
{
secret = new SecretKeyPacket(pubKeyPacket, newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
return new PgpSecretKey(secret, key.pub);
}
/// <summary>
/// Return a copy of the passed in secret key, encrypted using a new password
/// and the passed in algorithm.
/// </summary>
/// <param name="key">The PgpSecretKey to be copied.</param>
/// <param name="oldPassPhrase">The current password for the key.</param>
/// <param name="newPassPhrase">The new password for the key.</param>
/// <param name="newEncAlgorithm">The algorithm to be used for the encryption.</param>
/// <param name="rand">Source of randomness.</param>
public static PgpSecretKey CopyWithNewPassword(
PgpSecretKey key,
char[] oldPassPhrase,
char[] newPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
if (key.IsPrivateKeyEmpty)
{
throw new PgpException("no private key in this SecretKey - public key present only.");
}
byte[] rawKeyData = key.ExtractKeyData(oldPassPhrase);
int s2kUsage = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
byte[] keyData;
PublicKeyPacket pubKeyPacket = key.secret.PublicKeyPacket;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
s2kUsage = SecretKeyPacket.UsageNone;
if (key.secret.S2kUsage == SecretKeyPacket.UsageSha1) // SHA-1 hash, need to rewrite Checksum
{
keyData = new byte[rawKeyData.Length - 18];
Array.Copy(rawKeyData, 0, keyData, 0, keyData.Length - 2);
byte[] check = Checksum(false, keyData, keyData.Length - 2);
keyData[keyData.Length - 2] = check[0];
keyData[keyData.Length - 1] = check[1];
}
else
{
keyData = rawKeyData;
}
}
else
{
try
{
if (pubKeyPacket.Version >= 4)
{
keyData = EncryptKeyData(rawKeyData, newEncAlgorithm, newPassPhrase, rand, out s2k, out iv);
}
else
{
// TODO v3 RSA key encryption
throw Platform.CreateNotImplementedException("v3 RSA");
}
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception encrypting key", e);
}
}
SecretKeyPacket secret;
if (key.secret is SecretSubkeyPacket)
{
secret = new SecretSubkeyPacket(pubKeyPacket, newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
else
{
secret = new SecretKeyPacket(pubKeyPacket, newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
return(new PgpSecretKey(secret, key.pub));
}
/// <summary>
/// Return a copy of the passed in secret key, encrypted using a new password
/// and the passed in algorithm.
/// </summary>
/// <param name="key">The PgpSecretKey to be copied.</param>
/// <param name="oldPassPhrase">The current password for the key.</param>
/// <param name="newPassPhrase">The new password for the key.</param>
/// <param name="newEncAlgorithm">The algorithm to be used for the encryption.</param>
/// <param name="rand">Source of randomness.</param>
public static PgpSecretKey CopyWithNewPassword(
PgpSecretKey key,
char[] oldPassPhrase,
char[] newPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
byte[] rawKeyData = key.ExtractKeyData(oldPassPhrase);
int s2kUsage = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
byte[] keyData;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
s2kUsage = SecretKeyPacket.UsageNone;
if (key.secret.S2kUsage == SecretKeyPacket.UsageSha1) // SHA-1 hash, need to rewrite Checksum
{
keyData = new byte[rawKeyData.Length - 18];
Array.Copy(rawKeyData, 0, keyData, 0, keyData.Length - 2);
byte[] check = Checksum(false, keyData, keyData.Length - 2);
keyData[keyData.Length - 2] = check[0];
keyData[keyData.Length - 1] = check[1];
}
else
{
keyData = rawKeyData;
}
}
else
{
try
{
keyData = EncryptKeyData(rawKeyData, newEncAlgorithm, newPassPhrase, rand, out s2k, out iv);
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception encrypting key", e);
}
}
SecretKeyPacket secret;
if (key.secret is SecretSubkeyPacket)
{
secret = new SecretSubkeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
else
{
secret = new SecretKeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
return(new PgpSecretKey(secret, key.pub));
}
/// <summary>
/// Return a copy of the passed in secret key, encrypted using a new password
/// and the passed in algorithm.
/// </summary>
/// <param name="key">The PgpSecretKey to be copied.</param>
/// <param name="oldPassPhrase">The current password for the key.</param>
/// <param name="newPassPhrase">The new password for the key.</param>
/// <param name="newEncAlgorithm">The algorithm to be used for the encryption.</param>
/// <param name="rand">Source of randomness.</param>
public static PgpSecretKey CopyWithNewPassword(
PgpSecretKey key,
char[] oldPassPhrase,
char[] newPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
byte[] rawKeyData = key.ExtractKeyData(oldPassPhrase);
int s2kUsage = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
byte[] keyData;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
s2kUsage = SecretKeyPacket.UsageNone;
if (key.secret.S2kUsage == SecretKeyPacket.UsageSha1) // SHA-1 hash, need to rewrite Checksum
{
keyData = new byte[rawKeyData.Length - 18];
Array.Copy(rawKeyData, 0, keyData, 0, keyData.Length - 2);
byte[] check = Checksum(false, keyData, keyData.Length - 2);
keyData[keyData.Length - 2] = check[0];
keyData[keyData.Length - 1] = check[1];
}
else
{
keyData = rawKeyData;
}
}
else
{
try
{
keyData = EncryptKeyData(rawKeyData, newEncAlgorithm, newPassPhrase, rand, out s2k, out iv);
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception encrypting key", e);
}
}
SecretKeyPacket secret;
if (key.secret is SecretSubkeyPacket)
{
secret = new SecretSubkeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
else
{
secret = new SecretKeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
return new PgpSecretKey(secret, key.pub);
}
/// <summary>
/// Return a copy of the passed in secret key, encrypted using a new password
/// and the passed in algorithm.
/// </summary>
/// <param name="key">The PgpSecretKey to be copied.</param>
/// <param name="oldPassPhrase">The current password for the key.</param>
/// <param name="newPassPhrase">The new password for the key.</param>
/// <param name="newEncAlgorithm">The algorithm to be used for the encryption.</param>
/// <param name="rand">Source of randomness.</param>
public static PgpSecretKey CopyWithNewPassword(
PgpSecretKey key,
char[] oldPassPhrase,
char[] newPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
byte[] rawKeyData = key.ExtractKeyData(oldPassPhrase);
int s2kUsage = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
byte[] keyData;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
s2kUsage = SecretKeyPacket.UsageNone;
if (key.secret.S2kUsage == SecretKeyPacket.UsageSha1) // SHA-1 hash, need to rewrite Checksum
{
keyData = new byte[rawKeyData.Length - 18];
Array.Copy(rawKeyData, 0, keyData, 0, keyData.Length - 2);
byte[] check = Checksum(false, keyData, keyData.Length - 2);
keyData[keyData.Length - 2] = check[0];
keyData[keyData.Length - 1] = check[1];
}
else
{
keyData = rawKeyData;
}
}
else
{
IBufferedCipher c;
try
{
string cName = PgpUtilities.GetSymmetricCipherName(newEncAlgorithm);
c = CipherUtilities.GetCipher(cName + "/CFB/NoPadding");
}
catch (Exception e)
{
throw new PgpException("Exception creating cipher", e);
}
iv = new byte[8];
rand.NextBytes(iv);
s2k = new S2k(HashAlgorithmTag.Sha1, iv, 0x60);
try
{
KeyParameter sKey = PgpUtilities.MakeKeyFromPassPhrase(newEncAlgorithm, s2k, newPassPhrase);
iv = new byte[c.GetBlockSize()];
rand.NextBytes(iv);
c.Init(true, new ParametersWithIV(sKey, iv));
keyData = c.DoFinal(rawKeyData);
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception encrypting key", e);
}
}
SecretKeyPacket secret;
if (key.secret is SecretSubkeyPacket)
{
secret = new SecretSubkeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
else
{
secret = new SecretKeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
if (key.subSigs == null)
{
return new PgpSecretKey(secret, key.trust, key.keySigs, key.ids,
key.idTrusts, key.idSigs, key.pub);
}
return new PgpSecretKey(secret, key.trust, key.subSigs, key.pub);
}
/// <summary>
/// Return a copy of the passed in secret key, encrypted using a new password
/// and the passed in algorithm.
/// </summary>
/// <param name="key">The PgpSecretKey to be copied.</param>
/// <param name="oldPassPhrase">The current password for the key.</param>
/// <param name="newPassPhrase">The new password for the key.</param>
/// <param name="newEncAlgorithm">The algorithm to be used for the encryption.</param>
/// <param name="rand">Source of randomness.</param>
public static PgpSecretKey CopyWithNewPassword(
PgpSecretKey key,
char[] oldPassPhrase,
char[] newPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
byte[] rawKeyData = key.ExtractKeyData(oldPassPhrase);
int s2kUsage = key.secret.S2kUsage;
byte[] iv = null;
S2k s2k = null;
byte[] keyData = null;
if (newEncAlgorithm == SymmetricKeyAlgorithmTag.Null)
{
s2kUsage = SecretKeyPacket.UsageNone;
if (key.secret.S2kUsage == SecretKeyPacket.UsageSha1) // SHA-1 hash, need to rewrite Checksum
{
keyData = new byte[rawKeyData.Length - 18];
Array.Copy(rawKeyData, 0, keyData, 0, keyData.Length - 2);
byte[] check = Checksum(false, keyData, keyData.Length - 2);
keyData[keyData.Length - 2] = check[0];
keyData[keyData.Length - 1] = check[1];
}
else
{
keyData = rawKeyData;
}
}
else
{
IBufferedCipher c;
try
{
string cName = PgpUtilities.GetSymmetricCipherName(newEncAlgorithm);
c = CipherUtilities.GetCipher(cName + "/CFB/NoPadding");
}
catch (Exception e)
{
throw new PgpException("Exception creating cipher", e);
}
iv = new byte[8];
rand.NextBytes(iv);
s2k = new S2k(HashAlgorithmTag.Sha1, iv, 0x60);
try
{
KeyParameter sKey = PgpUtilities.MakeKeyFromPassPhrase(newEncAlgorithm, s2k, newPassPhrase);
iv = new byte[c.GetBlockSize()];
rand.NextBytes(iv);
c.Init(true, new ParametersWithIV(sKey, iv));
keyData = c.DoFinal(rawKeyData);
}
catch (PgpException e)
{
throw e;
}
catch (Exception e)
{
throw new PgpException("Exception encrypting key", e);
}
}
SecretKeyPacket secret;
if (key.secret is SecretSubkeyPacket)
{
secret = new SecretSubkeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
else
{
secret = new SecretKeyPacket(key.secret.PublicKeyPacket,
newEncAlgorithm, s2kUsage, s2k, iv, keyData);
}
if (key.subSigs == null)
{
return(new PgpSecretKey(secret, key.trust, key.keySigs, key.ids,
key.idTrusts, key.idSigs, key.pub));
}
return(new PgpSecretKey(secret, key.trust, key.subSigs, key.pub));
}
