RSA Module

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Implements RSA public-key cryptography to encrypt/decrypt and sign/verify messages.

Syntax

IPWorksEncrypt.Rsa

Remarks

The RSA class implements RSA public-key cryptography to encrypt/decrypt messages and sign/verify hash signatures.

To begin you must either specify an existing key or create a new key. Existing private keys may be specified by setting the Key* properties. To create a new key call CreateKey. Alternatively an existing certificate may be specified by setting the Certificate* properties

Signing

To sign data first set Key or Certificate. Specify the input data using InputFile or InputMessage. Next call Sign. The class will populate HashValue and HashSignature. After calling Sign the public key must be sent to the recipient along with HashSignature.

Encrypting

To encrypt data set RecipientKey or RecipientCert. Specify the input data using InputFile or InputMessage. Next call Encrypt. The class will populate OutputMessage, or write to the file specified by OutputFile.

Signature Verification

To verify a signature specify the input data using InputFile or InputMessage. Set SignerKey or SignerCert. Next set HashSignature and call VerifySignature. The VerifySignature method will return True if the signature was successfully verified.

Decrypting

To decrypt data first set Key or Certificate. Specify the input data using InputFile or InputMessage. Next call Decrypt. The class will populate OutputMessage, or write to the file specified by OutputFile.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

RSA Keys

A RSA key is made up of a number of individual parameters.

The public key consists of the following parameters:

• KeyModulus
• KeyExponent

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both sides of the encryption/signing and decryption/signature verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key may be represented in one of two ways. Both are mathematically equivalent. Private key format 1:

• KeyModulus
• KeyP
• KeyQ
• KeyDP
• KeyDQ

• KeyModulus
• KeyD

Property List

The following is the full list of the properties of the module with short descriptions. Click on the links for further details.

Method List

The following is the full list of the methods of the module with short descriptions. Click on the links for further details.

Event List

The following is the full list of the events fired by the module with short descriptions. Click on the links for further details.

Config Settings

The following is a list of config settings for the module with short descriptions. Click on the links for further details.

CertEncoded Property (RSA Module)

This is the certificate (PEM/Base64 encoded).

Syntax

• Swift
• Objective-C

public var certEncoded: String {
  get {...}
  set {...}
}

public var certEncodedB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=certEncoded,setter=setCertEncoded:) NSString* certEncoded;

- (NSString*)certEncoded;
- (void)setCertEncoded :(NSString*)newCertEncoded;

@property (nonatomic,readwrite,assign,getter=certEncodedB,setter=setCertEncodedB:) NSData* certEncodedB;

- (NSData*)certEncodedB;
- (void)setCertEncodedB :(NSData*)newCertEncoded;

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The CertStore and CertSubject properties also may be used to specify a certificate.

When CertEncoded is set, a search is initiated in the current CertStore for the private key of the certificate. If the key is found, CertSubject is updated to reflect the full subject of the selected certificate; otherwise, CertSubject is set to an empty string.

If an error occurs when setting this property an error will not be thrown. This property has a related method which will throw an error:

public func setCertEncodedB(certEncoded: Data) throws
public func setCertEncoded(certEncoded: String) throws

CertStore Property (RSA Module)

This is the name of the certificate store for the client certificate.

Syntax

• Swift
• Objective-C

public var certStore: String {
  get {...}
  set {...}
}

public var certStoreB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=certStore,setter=setCertStore:) NSString* certStore;

- (NSString*)certStore;
- (void)setCertStore :(NSString*)newCertStore;

@property (nonatomic,readwrite,assign,getter=certStoreB,setter=setCertStoreB:) NSData* certStoreB;

- (NSData*)certStoreB;
- (void)setCertStoreB :(NSData*)newCertStore;

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The CertStoreType property denotes the type of the certificate store specified by CertStore. If the store is password protected, specify the password in CertStorePassword.

CertStore is used in conjunction with the CertSubject property to specify client certificates. If CertStore has a value, and CertSubject or CertEncoded is set, a search for a certificate is initiated. Please see the CertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

CertStorePassword Property (RSA Module)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

• Swift
• Objective-C

public var certStorePassword: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=certStorePassword,setter=setCertStorePassword:) NSString* certStorePassword;

- (NSString*)certStorePassword;
- (void)setCertStorePassword :(NSString*)newCertStorePassword;

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

CertStoreType Property (RSA Module)

This is the type of certificate store for this certificate.

Syntax

• Swift
• Objective-C

public var certStoreType: RsaCertStoreTypes {
  get {...}
  set {...}
}

public enum RsaCertStoreTypes: Int32 {
  case cstUser = 0
  case cstMachine = 1
  case cstPFXFile = 2
  case cstPFXBlob = 3
  case cstJKSFile = 4
  case cstJKSBlob = 5
  case cstPEMKeyFile = 6
  case cstPEMKeyBlob = 7
  case cstPublicKeyFile = 8
  case cstPublicKeyBlob = 9
  case cstSSHPublicKeyBlob = 10
  case cstP7BFile = 11
  case cstP7BBlob = 12
  case cstSSHPublicKeyFile = 13
  case cstPPKFile = 14
  case cstPPKBlob = 15
  case cstXMLFile = 16
  case cstXMLBlob = 17
  case cstJWKFile = 18
  case cstJWKBlob = 19
  case cstSecurityKey = 20
  case cstBCFKSFile = 21
  case cstBCFKSBlob = 22
  case cstPKCS11 = 23
  case cstAuto = 99
}

@property (nonatomic,readwrite,assign,getter=certStoreType,setter=setCertStoreType:) int certStoreType;

- (int)certStoreType;
- (void)setCertStoreType :(int)newCertStoreType;

Default Value

0

Remarks

This is the type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

CertSubject Property (RSA Module)

This is the subject of the certificate used for client authentication.

Syntax

• Swift
• Objective-C

public var certSubject: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=certSubject,setter=setCertSubject:) NSString* certSubject;

- (NSString*)certSubject;
- (void)setCertSubject :(NSString*)newCertSubject;

Default Value

""

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

If an error occurs when setting this property an error will not be thrown. This property has a related method which will throw an error:

public func setCertSubject(certSubject: String) throws

HashAlgorithm Property (RSA Module)

The hash algorithm used for signing and signature verification.

Syntax

• Swift
• Objective-C

public var hashAlgorithm: RsaHashAlgorithms {
  get {...}
  set {...}
}

public enum RsaHashAlgorithms: Int32 {
  case rhaSHA1 = 0
  case rhaSHA224 = 1
  case rhaSHA256 = 2
  case rhaSHA384 = 3
  case rhaSHA512 = 4
  case rhaRIPEMD160 = 5
  case rhaMD2 = 6
  case rhaMD5 = 7
  case rhaMD5SHA1 = 8
}

@property (nonatomic,readwrite,assign,getter=hashAlgorithm,setter=setHashAlgorithm:) int hashAlgorithm;

- (int)hashAlgorithm;
- (void)setHashAlgorithm :(int)newHashAlgorithm;

Default Value

2

Remarks

This property specifies the hash algorithm used for signing and signature verification. Possible values are:

HashSignature Property (RSA Module)

The hash signature.

Syntax

• Swift
• Objective-C

public var hashSignature: String {
  get {...}
  set {...}
}

public var hashSignatureB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=hashSignature,setter=setHashSignature:) NSString* hashSignature;

- (NSString*)hashSignature;
- (void)setHashSignature :(NSString*)newHashSignature;

@property (nonatomic,readwrite,assign,getter=hashSignatureB,setter=setHashSignatureB:) NSData* hashSignatureB;

- (NSData*)hashSignatureB;
- (void)setHashSignatureB :(NSData*)newHashSignature;

Default Value

""

Remarks

This property holds the computed hash signature. This is populated after calling Sign. This must be set before calling VerifySignature.

HashValue Property (RSA Module)

The hash value of the data.

Syntax

• Swift
• Objective-C

public var hashData: String {
  get {...}
  set {...}
}

public var hashDataB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=hashValue,setter=setHashValue:) NSString* hashValue;

- (NSString*)hashValue;
- (void)setHashValue :(NSString*)newHashValue;

@property (nonatomic,readwrite,assign,getter=hashValueB,setter=setHashValueB:) NSData* hashValueB;

- (NSData*)hashValueB;
- (void)setHashValueB :(NSData*)newHashValue;

Default Value

""

Remarks

This property holds the computed hash value for the specified data. This is populated when calling Sign or VerifySignature when an input file is specified by setting InputFile or InputMessage.

If you know the hash value prior to using the class you may specify the pre-computed hash value here.

Hash Notes

The class will determine whether or not to recompute the hash based on the properties that are set. If a file is specified by InputFile or InputMessage the hash will be recomputed when calling Sign or VerifySignature. If the HashValue property is set the class will only sign the hash or verify the hash signature. Setting InputFile or InputMessage clears the HashValue property. Setting the HashValue property clears the input file selection.

InputFile Property (RSA Module)

The file to process.

Syntax

• Swift
• Objective-C

public var inputFile: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=inputFile,setter=setInputFile:) NSString* inputFile;

- (NSString*)inputFile;
- (void)setInputFile :(NSString*)newInputFile;

Default Value

""

Remarks

This property specifies the file to be processed. Set this property to the full or relative path to the file which will be processed.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

InputMessage Property (RSA Module)

The message to process.

Syntax

• Swift
• Objective-C

public var inputMessage: String {
  get {...}
  set {...}
}

public var inputMessageB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=inputMessage,setter=setInputMessage:) NSString* inputMessage;

- (NSString*)inputMessage;
- (void)setInputMessage :(NSString*)newInputMessage;

@property (nonatomic,readwrite,assign,getter=inputMessageB,setter=setInputMessageB:) NSData* inputMessageB;

- (NSData*)inputMessageB;
- (void)setInputMessageB :(NSData*)newInputMessage;

Default Value

""

Remarks

This property specifies the message to be processed.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

Key Property (RSA Module)

The RSA key.

Syntax

• Swift
• Objective-C

public var key: RSAKey {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=keyD,setter=setKeyD:) NSString* keyD;

- (NSString*)keyD;
- (void)setKeyD :(NSString*)newKeyD;

@property (nonatomic,readwrite,assign,getter=keyDB,setter=setKeyDB:) NSData* keyDB;

- (NSData*)keyDB;
- (void)setKeyDB :(NSData*)newKeyD;
@property (nonatomic,readwrite,assign,getter=keyDP,setter=setKeyDP:) NSString* keyDP;

- (NSString*)keyDP;
- (void)setKeyDP :(NSString*)newKeyDP;

@property (nonatomic,readwrite,assign,getter=keyDPB,setter=setKeyDPB:) NSData* keyDPB;

- (NSData*)keyDPB;
- (void)setKeyDPB :(NSData*)newKeyDP;
@property (nonatomic,readwrite,assign,getter=keyDQ,setter=setKeyDQ:) NSString* keyDQ;

- (NSString*)keyDQ;
- (void)setKeyDQ :(NSString*)newKeyDQ;

@property (nonatomic,readwrite,assign,getter=keyDQB,setter=setKeyDQB:) NSData* keyDQB;

- (NSData*)keyDQB;
- (void)setKeyDQB :(NSData*)newKeyDQ;
@property (nonatomic,readwrite,assign,getter=keyExponent,setter=setKeyExponent:) NSString* keyExponent;

- (NSString*)keyExponent;
- (void)setKeyExponent :(NSString*)newKeyExponent;

@property (nonatomic,readwrite,assign,getter=keyExponentB,setter=setKeyExponentB:) NSData* keyExponentB;

- (NSData*)keyExponentB;
- (void)setKeyExponentB :(NSData*)newKeyExponent;
@property (nonatomic,readwrite,assign,getter=keyInverseQ,setter=setKeyInverseQ:) NSString* keyInverseQ;

- (NSString*)keyInverseQ;
- (void)setKeyInverseQ :(NSString*)newKeyInverseQ;

@property (nonatomic,readwrite,assign,getter=keyInverseQB,setter=setKeyInverseQB:) NSData* keyInverseQB;

- (NSData*)keyInverseQB;
- (void)setKeyInverseQB :(NSData*)newKeyInverseQ;
@property (nonatomic,readwrite,assign,getter=keyModulus,setter=setKeyModulus:) NSString* keyModulus;

- (NSString*)keyModulus;
- (void)setKeyModulus :(NSString*)newKeyModulus;

@property (nonatomic,readwrite,assign,getter=keyModulusB,setter=setKeyModulusB:) NSData* keyModulusB;

- (NSData*)keyModulusB;
- (void)setKeyModulusB :(NSData*)newKeyModulus;
@property (nonatomic,readwrite,assign,getter=keyP,setter=setKeyP:) NSString* keyP;

- (NSString*)keyP;
- (void)setKeyP :(NSString*)newKeyP;

@property (nonatomic,readwrite,assign,getter=keyPB,setter=setKeyPB:) NSData* keyPB;

- (NSData*)keyPB;
- (void)setKeyPB :(NSData*)newKeyP;
@property (nonatomic,readwrite,assign,getter=keyPrivateKey,setter=setKeyPrivateKey:) NSString* keyPrivateKey;

- (NSString*)keyPrivateKey;
- (void)setKeyPrivateKey :(NSString*)newKeyPrivateKey;

@property (nonatomic,readwrite,assign,getter=keyPublicKey,setter=setKeyPublicKey:) NSString* keyPublicKey;

- (NSString*)keyPublicKey;
- (void)setKeyPublicKey :(NSString*)newKeyPublicKey;

@property (nonatomic,readwrite,assign,getter=keyQ,setter=setKeyQ:) NSString* keyQ;

- (NSString*)keyQ;
- (void)setKeyQ :(NSString*)newKeyQ;

@property (nonatomic,readwrite,assign,getter=keyQB,setter=setKeyQB:) NSData* keyQB;

- (NSData*)keyQB;
- (void)setKeyQB :(NSData*)newKeyQ;
 

Default Value

False

Remarks

This property specifies the RSA key used to sign or decrypt data. This property must be set before calling Sign or Decrypt. Alternatively, a certificate may be specified by setting Certificate

RSA Keys

A RSA key is made up of a number of individual parameters.

The public key consists of the following parameters:

• KeyModulus
• KeyExponent

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both sides of the encryption/signing and decryption/signature verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key may be represented in one of two ways. Both are mathematically equivalent. Private key format 1:

• KeyModulus
• KeyP
• KeyQ
• KeyDP
• KeyDQ

• KeyModulus
• KeyD

OutputFile Property (RSA Module)

The output file when encrypting or decrypting.

Syntax

• Swift
• Objective-C

public var outputFile: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=outputFile,setter=setOutputFile:) NSString* outputFile;

- (NSString*)outputFile;
- (void)setOutputFile :(NSString*)newOutputFile;

Default Value

""

Remarks

This property specifies the file to which the output will be written when Encrypt or Decrypt is called. This may be set to an absolute or relative path.

This property is only applicable to Encrypt and Decrypt.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

OutputMessage Property (RSA Module)

The output message after processing.

Syntax

• Swift
• Objective-C

public var outputMessage: String {
  get {...}
}

public var outputMessageB: Data {
  get {...}
}

@property (nonatomic,readonly,assign,getter=outputMessage) NSString* outputMessage;

- (NSString*)outputMessage;

@property (nonatomic,readonly,assign,getter=outputMessageB) NSData* outputMessageB;

- (NSData*)outputMessageB;

Default Value

""

Remarks

This property will be populated with the output from the operation if OutputFile is not set.

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

This property is read-only.

Overwrite Property (RSA Module)

Indicates whether or not the module should overwrite files.

Syntax

• Swift
• Objective-C

public var overwrite: Bool {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=overwrite,setter=setOverwrite:) BOOL overwrite;

- (BOOL)overwrite;
- (void)setOverwrite :(BOOL)newOverwrite;

Default Value

False

Remarks

This property indicates whether or not the class will overwrite OutputFile. If Overwrite is False, an error will be thrown whenever OutputFile exists before an operation. The default value is False.

RecipientCertEncoded Property (RSA Module)

This is the certificate (PEM/Base64 encoded).

Syntax

• Swift
• Objective-C

public var recipientCertEncoded: String {
  get {...}
  set {...}
}

public var recipientCertEncodedB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=recipientCertEncoded,setter=setRecipientCertEncoded:) NSString* recipientCertEncoded;

- (NSString*)recipientCertEncoded;
- (void)setRecipientCertEncoded :(NSString*)newRecipientCertEncoded;

@property (nonatomic,readwrite,assign,getter=recipientCertEncodedB,setter=setRecipientCertEncodedB:) NSData* recipientCertEncodedB;

- (NSData*)recipientCertEncodedB;
- (void)setRecipientCertEncodedB :(NSData*)newRecipientCertEncoded;

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The RecipientCertStore and RecipientCertSubject properties also may be used to specify a certificate.

When RecipientCertEncoded is set, a search is initiated in the current RecipientCertStore for the private key of the certificate. If the key is found, RecipientCertSubject is updated to reflect the full subject of the selected certificate; otherwise, RecipientCertSubject is set to an empty string.

If an error occurs when setting this property an error will not be thrown. This property has a related method which will throw an error:

public func setRecipientCertEncodedB(recipientCertEncoded: Data) throws
public func setRecipientCertEncoded(recipientCertEncoded: String) throws

RecipientCertStore Property (RSA Module)

This is the name of the certificate store for the client certificate.

Syntax

• Swift
• Objective-C

public var recipientCertStore: String {
  get {...}
  set {...}
}

public var recipientCertStoreB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=recipientCertStore,setter=setRecipientCertStore:) NSString* recipientCertStore;

- (NSString*)recipientCertStore;
- (void)setRecipientCertStore :(NSString*)newRecipientCertStore;

@property (nonatomic,readwrite,assign,getter=recipientCertStoreB,setter=setRecipientCertStoreB:) NSData* recipientCertStoreB;

- (NSData*)recipientCertStoreB;
- (void)setRecipientCertStoreB :(NSData*)newRecipientCertStore;

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The RecipientCertStoreType property denotes the type of the certificate store specified by RecipientCertStore. If the store is password protected, specify the password in RecipientCertStorePassword.

RecipientCertStore is used in conjunction with the RecipientCertSubject property to specify client certificates. If RecipientCertStore has a value, and RecipientCertSubject or RecipientCertEncoded is set, a search for a certificate is initiated. Please see the RecipientCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

RecipientCertStorePassword Property (RSA Module)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

• Swift
• Objective-C

public var recipientCertStorePassword: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=recipientCertStorePassword,setter=setRecipientCertStorePassword:) NSString* recipientCertStorePassword;

- (NSString*)recipientCertStorePassword;
- (void)setRecipientCertStorePassword :(NSString*)newRecipientCertStorePassword;

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

RecipientCertStoreType Property (RSA Module)

This is the type of certificate store for this certificate.

Syntax

• Swift
• Objective-C

public var recipientCertStoreType: RsaRecipientCertStoreTypes {
  get {...}
  set {...}
}

public enum RsaRecipientCertStoreTypes: Int32 {
  case cstUser = 0
  case cstMachine = 1
  case cstPFXFile = 2
  case cstPFXBlob = 3
  case cstJKSFile = 4
  case cstJKSBlob = 5
  case cstPEMKeyFile = 6
  case cstPEMKeyBlob = 7
  case cstPublicKeyFile = 8
  case cstPublicKeyBlob = 9
  case cstSSHPublicKeyBlob = 10
  case cstP7BFile = 11
  case cstP7BBlob = 12
  case cstSSHPublicKeyFile = 13
  case cstPPKFile = 14
  case cstPPKBlob = 15
  case cstXMLFile = 16
  case cstXMLBlob = 17
  case cstJWKFile = 18
  case cstJWKBlob = 19
  case cstSecurityKey = 20
  case cstBCFKSFile = 21
  case cstBCFKSBlob = 22
  case cstPKCS11 = 23
  case cstAuto = 99
}

@property (nonatomic,readwrite,assign,getter=recipientCertStoreType,setter=setRecipientCertStoreType:) int recipientCertStoreType;

- (int)recipientCertStoreType;
- (void)setRecipientCertStoreType :(int)newRecipientCertStoreType;

Default Value

0

Remarks

This is the type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

RecipientCertSubject Property (RSA Module)

This is the subject of the certificate used for client authentication.

Syntax

• Swift
• Objective-C

public var recipientCertSubject: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=recipientCertSubject,setter=setRecipientCertSubject:) NSString* recipientCertSubject;

- (NSString*)recipientCertSubject;
- (void)setRecipientCertSubject :(NSString*)newRecipientCertSubject;

Default Value

""

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

If an error occurs when setting this property an error will not be thrown. This property has a related method which will throw an error:

public func setRecipientCertSubject(recipientCertSubject: String) throws

RecipientKey Property (RSA Module)

The recipient's public key used when encrypting.

Syntax

• Swift
• Objective-C

public var recipientKey: RSAKey {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=recipientKeyExponent,setter=setRecipientKeyExponent:) NSString* recipientKeyExponent;

- (NSString*)recipientKeyExponent;
- (void)setRecipientKeyExponent :(NSString*)newRecipientKeyExponent;

@property (nonatomic,readwrite,assign,getter=recipientKeyExponentB,setter=setRecipientKeyExponentB:) NSData* recipientKeyExponentB;

- (NSData*)recipientKeyExponentB;
- (void)setRecipientKeyExponentB :(NSData*)newRecipientKeyExponent;
@property (nonatomic,readwrite,assign,getter=recipientKeyModulus,setter=setRecipientKeyModulus:) NSString* recipientKeyModulus;

- (NSString*)recipientKeyModulus;
- (void)setRecipientKeyModulus :(NSString*)newRecipientKeyModulus;

@property (nonatomic,readwrite,assign,getter=recipientKeyModulusB,setter=setRecipientKeyModulusB:) NSData* recipientKeyModulusB;

- (NSData*)recipientKeyModulusB;
- (void)setRecipientKeyModulusB :(NSData*)newRecipientKeyModulus;
@property (nonatomic,readwrite,assign,getter=recipientKeyPublicKey,setter=setRecipientKeyPublicKey:) NSString* recipientKeyPublicKey;

- (NSString*)recipientKeyPublicKey;
- (void)setRecipientKeyPublicKey :(NSString*)newRecipientKeyPublicKey;

 

Default Value

False

Remarks

This property specifies the recipient's public key. This property must be set before calling Encrypt. Alternatively, a certificate may be specified by setting RecipientCert

RSA Keys

A RSA key is made up of a number of individual parameters.

The public key consists of the following parameters:

• KeyModulus
• KeyExponent

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both sides of the encryption/signing and decryption/signature verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key may be represented in one of two ways. Both are mathematically equivalent. Private key format 1:

• KeyModulus
• KeyP
• KeyQ
• KeyDP
• KeyDQ

• KeyModulus
• KeyD

SignerCertEncoded Property (RSA Module)

This is the certificate (PEM/Base64 encoded).

Syntax

• Swift
• Objective-C

public var signerCertEncoded: String {
  get {...}
  set {...}
}

public var signerCertEncodedB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=signerCertEncoded,setter=setSignerCertEncoded:) NSString* signerCertEncoded;

- (NSString*)signerCertEncoded;
- (void)setSignerCertEncoded :(NSString*)newSignerCertEncoded;

@property (nonatomic,readwrite,assign,getter=signerCertEncodedB,setter=setSignerCertEncodedB:) NSData* signerCertEncodedB;

- (NSData*)signerCertEncodedB;
- (void)setSignerCertEncodedB :(NSData*)newSignerCertEncoded;

Default Value

""

Remarks

This is the certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SignerCertStore and SignerCertSubject properties also may be used to specify a certificate.

When SignerCertEncoded is set, a search is initiated in the current SignerCertStore for the private key of the certificate. If the key is found, SignerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SignerCertSubject is set to an empty string.

If an error occurs when setting this property an error will not be thrown. This property has a related method which will throw an error:

public func setSignerCertEncodedB(signerCertEncoded: Data) throws
public func setSignerCertEncoded(signerCertEncoded: String) throws

SignerCertStore Property (RSA Module)

This is the name of the certificate store for the client certificate.

Syntax

• Swift
• Objective-C

public var signerCertStore: String {
  get {...}
  set {...}
}

public var signerCertStoreB: Data {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=signerCertStore,setter=setSignerCertStore:) NSString* signerCertStore;

- (NSString*)signerCertStore;
- (void)setSignerCertStore :(NSString*)newSignerCertStore;

@property (nonatomic,readwrite,assign,getter=signerCertStoreB,setter=setSignerCertStoreB:) NSData* signerCertStoreB;

- (NSData*)signerCertStoreB;
- (void)setSignerCertStoreB :(NSData*)newSignerCertStore;

Default Value

"MY"

Remarks

This is the name of the certificate store for the client certificate.

The SignerCertStoreType property denotes the type of the certificate store specified by SignerCertStore. If the store is password protected, specify the password in SignerCertStorePassword.

SignerCertStore is used in conjunction with the SignerCertSubject property to specify client certificates. If SignerCertStore has a value, and SignerCertSubject or SignerCertEncoded is set, a search for a certificate is initiated. Please see the SignerCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

SignerCertStorePassword Property (RSA Module)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

• Swift
• Objective-C

public var signerCertStorePassword: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=signerCertStorePassword,setter=setSignerCertStorePassword:) NSString* signerCertStorePassword;

- (NSString*)signerCertStorePassword;
- (void)setSignerCertStorePassword :(NSString*)newSignerCertStorePassword;

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

SignerCertStoreType Property (RSA Module)

This is the type of certificate store for this certificate.

Syntax

• Swift
• Objective-C

public var signerCertStoreType: RsaSignerCertStoreTypes {
  get {...}
  set {...}
}

public enum RsaSignerCertStoreTypes: Int32 {
  case cstUser = 0
  case cstMachine = 1
  case cstPFXFile = 2
  case cstPFXBlob = 3
  case cstJKSFile = 4
  case cstJKSBlob = 5
  case cstPEMKeyFile = 6
  case cstPEMKeyBlob = 7
  case cstPublicKeyFile = 8
  case cstPublicKeyBlob = 9
  case cstSSHPublicKeyBlob = 10
  case cstP7BFile = 11
  case cstP7BBlob = 12
  case cstSSHPublicKeyFile = 13
  case cstPPKFile = 14
  case cstPPKBlob = 15
  case cstXMLFile = 16
  case cstXMLBlob = 17
  case cstJWKFile = 18
  case cstJWKBlob = 19
  case cstSecurityKey = 20
  case cstBCFKSFile = 21
  case cstBCFKSBlob = 22
  case cstPKCS11 = 23
  case cstAuto = 99
}

@property (nonatomic,readwrite,assign,getter=signerCertStoreType,setter=setSignerCertStoreType:) int signerCertStoreType;

- (int)signerCertStoreType;
- (void)setSignerCertStoreType :(int)newSignerCertStoreType;

Default Value

0

Remarks

This is the type of certificate store for this certificate.

The class supports both public and private keys in a variety of formats. When the cstAuto value is used, the class will automatically determine the type. This property can take one of the following values:

SignerCertSubject Property (RSA Module)

This is the subject of the certificate used for client authentication.

Syntax

• Swift
• Objective-C

public var signerCertSubject: String {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=signerCertSubject,setter=setSignerCertSubject:) NSString* signerCertSubject;

- (NSString*)signerCertSubject;
- (void)setSignerCertSubject :(NSString*)newSignerCertSubject;

Default Value

""

Remarks

This is the subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

If an error occurs when setting this property an error will not be thrown. This property has a related method which will throw an error:

public func setSignerCertSubject(signerCertSubject: String) throws

SignerKey Property (RSA Module)

The public key used to verify the signature.

Syntax

• Swift
• Objective-C

public var signerKey: RSAKey {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=signerKeyExponent,setter=setSignerKeyExponent:) NSString* signerKeyExponent;

- (NSString*)signerKeyExponent;
- (void)setSignerKeyExponent :(NSString*)newSignerKeyExponent;

@property (nonatomic,readwrite,assign,getter=signerKeyExponentB,setter=setSignerKeyExponentB:) NSData* signerKeyExponentB;

- (NSData*)signerKeyExponentB;
- (void)setSignerKeyExponentB :(NSData*)newSignerKeyExponent;
@property (nonatomic,readwrite,assign,getter=signerKeyModulus,setter=setSignerKeyModulus:) NSString* signerKeyModulus;

- (NSString*)signerKeyModulus;
- (void)setSignerKeyModulus :(NSString*)newSignerKeyModulus;

@property (nonatomic,readwrite,assign,getter=signerKeyModulusB,setter=setSignerKeyModulusB:) NSData* signerKeyModulusB;

- (NSData*)signerKeyModulusB;
- (void)setSignerKeyModulusB :(NSData*)newSignerKeyModulus;
@property (nonatomic,readwrite,assign,getter=signerKeyPublicKey,setter=setSignerKeyPublicKey:) NSString* signerKeyPublicKey;

- (NSString*)signerKeyPublicKey;
- (void)setSignerKeyPublicKey :(NSString*)newSignerKeyPublicKey;

 

Default Value

False

Remarks

This property specifies the public key used to verify the signature. This public key corresponds to the private key used when creating the signature. This must be set before calling VerifySignature. Alternatively, a certificate may be specified by setting SignerCert

RSA Keys

A RSA key is made up of a number of individual parameters.

The public key consists of the following parameters:

• KeyModulus
• KeyExponent

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both sides of the encryption/signing and decryption/signature verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key may be represented in one of two ways. Both are mathematically equivalent. Private key format 1:

• KeyModulus
• KeyP
• KeyQ
• KeyDP
• KeyDQ

• KeyModulus
• KeyD

UseHex Property (RSA Module)

Whether input or output is hex encoded.

Syntax

• Swift
• Objective-C

public var useHex: Bool {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=useHex,setter=setUseHex:) BOOL useHex;

- (BOOL)useHex;
- (void)setUseHex :(BOOL)newUseHex;

Default Value

False

Remarks

This property specifies whether the encrypted data, HashValue, and HashSignature are hex encoded.

If set to True, when Encrypt is called the class will perform the encryption as normal and then hex encode the output. OutputMessage or OutputFile will hold hex encoded data.

If set to True, when Decrypt is called the class will expect InputMessage or InputFile to hold hex encoded data. The class will then hex decode the data and perform decryption as normal.

If set to True, when Sign is called the class will compute the hash for the specified file and populate HashValue with the hex encoded hash value. It will then create the hash signature and populate HashSignature with the hex encoded hash signature value. If HashValue is specified directly it must be a hex encoded value.

If set to True, when VerifySignature is called the class will compute the hash value for the specified file and populate HashValue with the hex encoded hash value. It will then hex decode HashSignature and verify the signature. HashSignature must hold a hex encoded value. If HashValue is specified directly it must be a hex encoded value.

UseOAEP Property (RSA Module)

Whether to use Optimal Asymmetric Encryption Padding (OAEP).

Syntax

• Swift
• Objective-C

public var useOAEP: Bool {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=useOAEP,setter=setUseOAEP:) BOOL useOAEP;

- (BOOL)useOAEP;
- (void)setUseOAEP :(BOOL)newUseOAEP;

Default Value

False

Remarks

Whether to use Optimal Asymmetric Encryption Padding (OAEP). By default this value is False and the class will use PKCS1.

Note: When set to True the HashAlgorithm is also applicable when calling Encrypt and Decrypt.

UsePSS Property (RSA Module)

Whether to use RSA-PSS during signing and verification.

Syntax

• Swift
• Objective-C

public var usePSS: Bool {
  get {...}
  set {...}
}

@property (nonatomic,readwrite,assign,getter=usePSS,setter=setUsePSS:) BOOL usePSS;

- (BOOL)usePSS;
- (void)setUsePSS :(BOOL)newUsePSS;

Default Value

False

Remarks

This property specifies whether RSA-PSS will be used when signing and verifying messages. The default value is False.

Config Method (RSA Module)

Sets or retrieves a configuration setting.

Syntax

• Swift
• Objective-C

public func config(configurationString: String) throws -> String

- (NSString*)config:(NSString*)configurationString;

Remarks

Config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

CreateKey Method (RSA Module)

Creates a new key.

Syntax

• Swift
• Objective-C

public func createKey() throws -> Void

- (void)createKey;

Remarks

This method creates a new public and private key.

When calling CreateKey the Key* properties are populated with a new private and public key.

RSA Keys

A RSA key is made up of a number of individual parameters.

The public key consists of the following parameters:

• KeyModulus
• KeyExponent

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both sides of the encryption/signing and decryption/signature verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key may be represented in one of two ways. Both are mathematically equivalent. Private key format 1:

• KeyModulus
• KeyP
• KeyQ
• KeyDP
• KeyDQ

• KeyModulus
• KeyD

Decrypt Method (RSA Module)

Decrypts the input data using the specified private key.

Syntax

• Swift
• Objective-C

public func decrypt() throws -> Void

- (void)decrypt;

Remarks

This method decrypts the input data using the private key specified in the Key* properties. Alternatively, a certificate may be specified by setting Certificate

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

Key Size and the Maximum Length of Data

RSA has an upper limit to the amount of data that can be encrypted or decrypted, also known as message length. This can typically be calculated as the size of the key minus the size of the RSA header and padding.

When not using OAEP, the following formula and table can be referenced. (RSA Key Bytes) - (Header Bytes) = Length of data, where Header Bytes is always 11.

When using OAEP, the following formula and table can be referenced. (RSA Key Bytes) - (2 * Hash Length Bytes) - 2 = Length of data. The table below assumes SHA-256 for the hash, so Hash Length Bytes is 32.

Encrypt Method (RSA Module)

Encrypts the input data using the recipient's public key.

Syntax

• Swift
• Objective-C

public func encrypt() throws -> Void

- (void)encrypt;

Remarks

This method encrypts the input data using the public key specified in the RecipientKey* properties. Alternatively, a certificate may be specified by setting RecipientCert

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• InputFile
• InputMessage

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• OutputFile
• OutputMessage: The output data is written to this property if no other destination is specified.

Key Size and the Maximum Length of Data

RSA has an upper limit to the amount of data that can be encrypted or decrypted, also known as message length. This can typically be calculated as the size of the key minus the size of the RSA header and padding.

When not using OAEP, the following formula and table can be referenced. (RSA Key Bytes) - (Header Bytes) = Length of data, where Header Bytes is always 11.

When using OAEP, the following formula and table can be referenced. (RSA Key Bytes) - (2 * Hash Length Bytes) - 2 = Length of data. The table below assumes SHA-256 for the hash, so Hash Length Bytes is 32.

Reset Method (RSA Module)

Resets the component.

Syntax

• Swift
• Objective-C

public func reset() throws -> Void

- (void)reset;

Remarks

When called, the class will reset all of its properties to their default values.

Sign Method (RSA Module)

Creates a hash signature.

Syntax

• Swift
• Objective-C

public func sign() throws -> Void

- (void)sign;

Remarks

This method will create a hash signature.

Before calling this method specify the input file by setting InputFile or InputMessage.

A key is required to create the hash signature. You may create a new key by calling CreateKey, or specify an existing key pair in Key. Alternatively, a certificate may be specified by setting Certificate. When this method is called the class will compute the hash for the specified file and populate HashValue. It will then create the hash signature using the specified Key and populate HashSignature.

To create the hash signature without first computing the hash simply specify HashValue before calling this method.

The Progress event will fire with updates for the hash computation progress only. The hash signature creation process is quick and does not require progress updates.

VerifySignature Method (RSA Module)

Verifies the signature for the specified data.

Syntax

• Swift
• Objective-C

public func verifySignature() throws -> Bool

- (BOOL)verifySignature;

Remarks

This method will verify a hash signature.

Before calling this method specify the input file by setting InputFile or InputMessage.

A public key and the hash signature are required to perform the signature verification. Specify the public key in SignerKey. Alternatively, a certificate may be specified by setting SignerCert. Specify the hash signature in HashSignature.

When this method is called the class will compute the hash for the specified file and populate HashValue. It will verify the signature using the specified SignerKey and HashSignature.

To verify the hash signature without first computing the hash simply specify HashValue before calling this method.

The Progress event will fire with updates for the hash computation progress only. The hash signature verification process is quick and does not require progress updates.

Error Event (RSA Module)

Fired when information is available about errors during data delivery.

Syntax

• Swift
• Objective-C

func onError(errorCode: Int32, description: String)

- (void)onError:(int)errorCode :(NSString*)description;

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class .

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

Progress Event (RSA Module)

Fired as progress is made.

Syntax

• Swift
• Objective-C

func onProgress(bytesProcessed: Int64, percentProcessed: Int32)

- (void)onProgress:(long long)bytesProcessed :(int)percentProcessed;

Remarks

This event is fired automatically as data is processed by the class.

The PercentProcessed parameter indicates the current status of the operation.

The BytesProcessed parameter holds the total number of bytes processed so far.

RSAKey Type

Contains the typical parameters for the RSA algorithm.

Remarks

This type is made up of fields that represent the private and public key parameters used by the RSA algorithm.

RSA Keys

A RSA key is made up of a number of individual parameters.

The public key consists of the following parameters:

• KeyModulus
• KeyExponent

The class also includes the KeyPublicKey property which holds the PEM formatted public key for ease of use. This is helpful if you are in control of both sides of the encryption/signing and decryption/signature verification process. When sending the public key to a recipient note that not all implementations will support using the PEM formatted value in KeyPublicKey in which case the individual parameters must be sent.

The private key may be represented in one of two ways. Both are mathematically equivalent. Private key format 1:

• KeyModulus
• KeyP
• KeyQ
• KeyDP
• KeyDQ

• KeyModulus
• KeyD

Fields

Constructors

public init()

The default constructor creates a new RSAKey instance but does not assign a public or private key.

public init(modulus: , exponent: )

The public key constructor assigns an existing public key.

public init(modulus: , d: , p: , q: , dP: , dQ: )

The private key constructor assigns an existing private key. Any valid combination of parameters representing a private key may be supplied. See the description at the top of this page for details on RSA private key formats.

Config Settings (RSA Module)

RSA Config Settings

Base Config Settings

Trappable Errors (RSA Module)

RSA Errors