/// <summary>
/// Default constructor for PaymentCardSecret
/// </summary>
/// <param name="paymentCard">PaymentCard to encrypt</param>
/// <param name="keyIdentifier">Key identifier</param>
/// <param name="algorithm">Symmetric Key Algorithm used for encryption</param>
/// <param name="derivedPassword">Derived password</param>
public PaymentCardSecret(PaymentCard paymentCard, string keyIdentifier, SymmetricKeyAlgorithm algorithm, byte[] derivedPassword)
{
Dictionary <string, object> dictionaryForAUDALF = new Dictionary <string, object>()
{
{ PaymentCard.titleKey, paymentCard.GetTitle() },
{ PaymentCard.nameOnCardKey, paymentCard.GetNameOnCard() },
{ PaymentCard.cardTypeKey, paymentCard.GetCardType() },
{ PaymentCard.numberKey, paymentCard.GetNumber() },
{ PaymentCard.securityCodeKey, paymentCard.GetSecurityCode() },
{ PaymentCard.startDateKey, paymentCard.GetStartDate() },
{ PaymentCard.expirationDateKey, paymentCard.GetExpirationDate() },
{ PaymentCard.notesKey, paymentCard.GetNotes() },
{ PaymentCard.creationTimeKey, DateTimeOffset.FromUnixTimeSeconds(paymentCard.creationTime) },
{ PaymentCard.modificationTimeKey, DateTimeOffset.FromUnixTimeSeconds(paymentCard.modificationTime) },
};
this.keyIdentifier = Encoding.UTF8.GetBytes(keyIdentifier);
this.algorithm = algorithm;
// Create AUDALF payload from dictionary
byte[] serializedBytes = AUDALF_Serialize.Serialize(dictionaryForAUDALF, valueTypes: null, serializationSettings: serializationSettings);
// Encrypt the AUDALF payload with given algorithm
this.audalfData = algorithm.EncryptBytes(serializedBytes, derivedPassword);
// Calculate new checksum
this.CalculateAndUpdateChecksum();
}
/// <summary>
/// Deep copy existing PaymentCard to new PaymentCard
/// </summary>
/// <param name="copyThis">PaymentCard to copy</param>
public PaymentCard(PaymentCard copyThis)
{
this.title = new byte[copyThis.title.Length];
Buffer.BlockCopy(copyThis.title, 0, this.title, 0, copyThis.title.Length);
this.nameOnCard = new byte[copyThis.nameOnCard.Length];
Buffer.BlockCopy(copyThis.nameOnCard, 0, this.nameOnCard, 0, copyThis.nameOnCard.Length);
this.cardType = new byte[copyThis.cardType.Length];
Buffer.BlockCopy(copyThis.cardType, 0, this.cardType, 0, copyThis.cardType.Length);
this.number = new byte[copyThis.number.Length];
Buffer.BlockCopy(copyThis.number, 0, this.number, 0, copyThis.number.Length);
this.securityCode = new byte[copyThis.securityCode.Length];
Buffer.BlockCopy(copyThis.securityCode, 0, this.securityCode, 0, copyThis.securityCode.Length);
this.startDate = new byte[copyThis.startDate.Length];
Buffer.BlockCopy(copyThis.startDate, 0, this.startDate, 0, copyThis.startDate.Length);
this.expirationDate = new byte[copyThis.expirationDate.Length];
Buffer.BlockCopy(copyThis.expirationDate, 0, this.expirationDate, 0, copyThis.expirationDate.Length);
this.notes = new byte[copyThis.notes.Length];
Buffer.BlockCopy(copyThis.notes, 0, this.notes, 0, copyThis.notes.Length);
this.creationTime = copyThis.creationTime;
this.modificationTime = copyThis.modificationTime;
this.checksum = copyThis.checksum;
}
/// <summary>
/// Get PaymentCard. Use this for situation where you want to convert secret -> non secret
/// </summary>
/// <param name="derivedPassword">Derived password</param>
/// <returns>PaymentCard</returns>
public PaymentCard GetPaymentCard(byte[] derivedPassword)
{
Dictionary <string, object> dict = this.GetPaymentCardAsDictionary(derivedPassword);
PaymentCard returnValue = new PaymentCard((string)dict[PaymentCard.titleKey], (string)dict[PaymentCard.nameOnCardKey], (string)dict[PaymentCard.cardTypeKey],
(string)dict[PaymentCard.numberKey], (string)dict[PaymentCard.securityCodeKey], (string)dict[PaymentCard.startDateKey],
(string)dict[PaymentCard.expirationDateKey], (string)dict[PaymentCard.notesKey]);
returnValue.creationTime = ((DateTimeOffset)dict[PaymentCard.creationTimeKey]).ToUnixTimeSeconds();
returnValue.modificationTime = ((DateTimeOffset)dict[PaymentCard.modificationTimeKey]).ToUnixTimeSeconds();
return(returnValue);
}
/// <summary>
/// Replace existing payment card in Common secret container with another one (basically for editing purposes)
/// </summary>
/// <param name="zeroBasedIndex">Zero based index of payment card secret that will be replaced</param>
/// <param name="derivedPassword">Derived password</param>
/// <param name="paymentCard">Payment card to add</param>
/// <param name="keyIdentifier">Key identifier</param>
/// <param name="algorithm">Symmetric Encryption Algorithm to use</param>
/// <returns>Tuple that tells if add was success, and possible error</returns>
public (bool success, string possibleError) ReplacePaymentCardSecret(int zeroBasedIndex, byte[] derivedPassword, PaymentCard paymentCard, string keyIdentifier, SymmetricEncryptionAlgorithm algorithm = SymmetricEncryptionAlgorithm.AES_CTR)
{
if (zeroBasedIndex < 0 || zeroBasedIndex >= this.paymentCardSecrets.Count)
{
return(false, $"Index {zeroBasedIndex} is out of bounds [0, {this.paymentCardSecrets.Count})");
}
(bool checkResult, string possibleError) = MandatoryChecks(paymentCard, "PaymentCard", keyIdentifier, derivedPassword);
if (!checkResult)
{
return(checkResult, possibleError);
}
SymmetricKeyAlgorithm ska = SymmetricKeyAlgorithm.GenerateNew(algorithm);
this.paymentCardSecrets[zeroBasedIndex] = new PaymentCardSecret(paymentCard, keyIdentifier, ska, derivedPassword);
return(success : true, possibleError : "");
}
/// <summary>
/// Add payment card to Common secret container
/// </summary>
/// <param name="derivedPassword">Derived password</param>
/// <param name="paymentCard">Payment card to add</param>
/// <param name="keyIdentifier">Key identifier</param>
/// <param name="algorithm">Symmetric Encryption Algorithm to use</param>
/// <returns>Tuple that tells if add was success, and possible error</returns>
public (bool success, string possibleError) AddPaymentCardSecret(byte[] derivedPassword, PaymentCard paymentCard, string keyIdentifier, SymmetricEncryptionAlgorithm algorithm = SymmetricEncryptionAlgorithm.AES_CTR)
{
(bool checkResult, string possibleError) = MandatoryChecks(paymentCard, "PaymentCard", keyIdentifier, derivedPassword);
if (!checkResult)
{
return(checkResult, possibleError);
}
SymmetricKeyAlgorithm ska = SymmetricKeyAlgorithm.GenerateNew(algorithm);
this.paymentCardSecrets.Add(new PaymentCardSecret(paymentCard, keyIdentifier, ska, derivedPassword));
return(success : true, possibleError : "");
}
