OTPServer Class
Properties Methods Events Configuration Settings Errors
The OTPServer class checks the validity of one-time passwords.
Syntax
OTPServer
Remarks
A One-Time Password (OTP) is a password that is valid for only one session or transaction. OTPs were designed to overcome the weaknesses of traditional static passwords such as vulnerability to replay attacks. The OTPServer class can check the validity of HMAC-Based One-Time Passwords (HOTP) and Time-Based One-Time Passwords (TOTP).
Property List
The following is the full list of the properties of the class with short descriptions. Click on the links for further details.
FIPSMode | Reserved. |
UserCount | The number of records in the User arrays. |
UserAssociatedData | Contains the user's Associated Data when SSH AEAD (Authenticated Encryption with Associated Data) algorithm is used. |
UserBasePath | Base path for this user in the server's file system. |
UserCert | Contains the user's certificate. |
UserData | Contains uninterpreted user-defined data that should be associated with the user account, such as comments or custom settings. |
UserHandle | Allows to get or set a 'handle', a unique identifier of the underlying property object. |
UserHashAlgorithm | Specifies the hash algorithm used to generate TOTP (Time-based One-Time Passwords) passwords for this user. |
UserIncomingSpeedLimit | Specifies the incoming speed limit for this user. |
UserOtpAlgorithm | The algorithm used to generate one-time passwords (OTP) for this user, either HOTP (Hash-based OTP) or TOTP (Time-based OTP). |
UserOtpValue | The user's time interval (TOTP) or Counter (HOTP). |
UserOutgoingSpeedLimit | Specifies the outgoing speed limit for this user. |
UserPassword | The user's authentication password. |
UserPasswordLen | Specifies the length of the user's OTP password. |
UserSharedSecret | Contains the user's secret key, which is essentially a shared secret between the client and server. |
UserSSHKey | Contains the user's SSH key. |
UserUsername | The registered name (login) of the user. |
Method List
The following is the full list of the methods of the class with short descriptions. Click on the links for further details.
Config | Sets or retrieves a configuration setting. |
DoAction | Performs an additional action. |
IsHOTPPasswordValid | Validates a hash-based one-time password. |
IsPasswordValid | Validates an OTP password for a user. |
IsTOTPPasswordValid | Validates a time-based one-time password. |
Event List
The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.
Error | Information about errors during one-time password (OTP) processing. |
Notification | This event notifies the application about an underlying control flow event. |
Configuration Settings
The following is a list of configuration settings for the class with short descriptions. Click on the links for further details.
BaseTime | . |
Delta | . |
CheckKeyIntegrityBeforeUse | Enables or disable private key integrity check before use. |
CookieCaching | Specifies whether a cookie cache should be used for HTTP(S) transports. |
Cookies | Gets or sets local cookies for the class (supported for HTTPClient, RESTClient and SOAPClient only). |
DefDeriveKeyIterations | Specifies the default key derivation algorithm iteration count. |
EnableClientSideSSLFFDHE | Enables or disables finite field DHE key exchange support in TLS clients. |
GlobalCookies | Gets or sets global cookies for all the HTTP transports. |
HttpUserAgent | Specifies the user agent name to be used by all HTTP clients. |
LogDestination | Specifies the debug log destination. |
LogDetails | Specifies the debug log details to dump. |
LogFile | Specifies the debug log filename. |
LogFilters | Specifies the debug log filters. |
LogFlushMode | Specifies the log flush mode. |
LogLevel | Specifies the debug log level. |
LogMaxEventCount | Specifies the maximum number of events to cache before further action is taken. |
LogRotationMode | Specifies the log rotation mode. |
MaxASN1BufferLength | Specifies the maximal allowed length for ASN.1 primitive tag data. |
MaxASN1TreeDepth | Specifies the maximal depth for processed ASN.1 trees. |
OCSPHashAlgorithm | Specifies the hash algorithm to be used to identify certificates in OCSP requests. |
Tag | Allows to store any custom data. |
UseSharedSystemStorages | Specifies whether the validation engine should use a global per-process copy of the system certificate stores. |
UseSystemOAEPAndPSS | Enforces or disables the use of system-driven RSA OAEP and PSS computations. |
UseSystemRandom | Enables or disables the use of the OS PRNG. |
FIPSMode Property (OTPServer Class)
Reserved.
Syntax
bool GetFIPSMode();
int SetFIPSMode(bool bFIPSMode);
Default Value
false
Remarks
This property is reserved for future use.
Data Type
Boolean
UserCount Property (OTPServer Class)
The number of records in the User arrays.
Syntax
int GetUserCount();
int SetUserCount(int iUserCount);
Default Value
0
Remarks
This property controls the size of the following arrays:
- UserAssociatedData
- UserBasePath
- UserCert
- UserData
- UserHandle
- UserHashAlgorithm
- UserIncomingSpeedLimit
- UserOtpAlgorithm
- UserOtpValue
- UserOutgoingSpeedLimit
- UserPassword
- UserPasswordLen
- UserSharedSecret
- UserSSHKey
- UserUsername
This property is not available at design time.
Data Type
Integer
UserAssociatedData Property (OTPServer Class)
Contains the user's Associated Data when SSH AEAD (Authenticated Encryption with Associated Data) algorithm is used.
Syntax
QByteArray GetUserAssociatedData(int iUserIndex);
int SetUserAssociatedData(int iUserIndex, QByteArray qbaUserAssociatedData);
Remarks
Contains the user's Associated Data when SSH AEAD (Authenticated Encryption with Associated Data) algorithm is used.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Byte Array
UserBasePath Property (OTPServer Class)
Base path for this user in the server's file system.
Syntax
QString GetUserBasePath(int iUserIndex);
int SetUserBasePath(int iUserIndex, QString qsUserBasePath);
Default Value
""
Remarks
Base path for this user in the server's file system.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
String
UserCert Property (OTPServer Class)
Contains the user's certificate.
Syntax
QByteArray GetUserCert(int iUserIndex);
int SetUserCert(int iUserIndex, QByteArray qbaUserCert);
Remarks
Contains the user's certificate.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Byte Array
UserData Property (OTPServer Class)
Contains uninterpreted user-defined data that should be associated with the user account, such as comments or custom settings.
Syntax
QString GetUserData(int iUserIndex);
int SetUserData(int iUserIndex, QString qsUserData);
Default Value
""
Remarks
Contains uninterpreted user-defined data that should be associated with the user account, such as comments or custom settings.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
String
UserHandle Property (OTPServer Class)
Allows to get or set a 'handle', a unique identifier of the underlying property object.
Syntax
qint64 GetUserHandle(int iUserIndex);
int SetUserHandle(int iUserIndex, qint64 lUserHandle);
Default Value
0
Remarks
Allows to get or set a 'handle', a unique identifier of the underlying property object. Use this property to assign objects of the same type in a quicker manner, without copying them fieldwise.
When you pass a handle of one object to another, the source object is copied to the destination rather than assigned. It is safe to get rid of the original object
after such operation.
pdfSigner.setSigningCertHandle(certMgr.getCertHandle());
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Long64
UserHashAlgorithm Property (OTPServer Class)
Specifies the hash algorithm used to generate TOTP (Time-based One-Time Passwords) passwords for this user.
Syntax
QString GetUserHashAlgorithm(int iUserIndex);
int SetUserHashAlgorithm(int iUserIndex, QString qsUserHashAlgorithm);
Default Value
""
Remarks
Specifies the hash algorithm used to generate TOTP (Time-based One-Time Passwords) passwords for this user. Three HMAC algorithms are supported, with SHA-1, SHA-256, and SHA-512 digests:
SB_MAC_ALGORITHM_HMAC_SHA1 | SHA1 | |
SB_MAC_ALGORITHM_HMAC_SHA256 | SHA256 | |
SB_MAC_ALGORITHM_HMAC_SHA512 | SHA512 |
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
String
UserIncomingSpeedLimit Property (OTPServer Class)
Specifies the incoming speed limit for this user.
Syntax
int GetUserIncomingSpeedLimit(int iUserIndex);
int SetUserIncomingSpeedLimit(int iUserIndex, int iUserIncomingSpeedLimit);
Default Value
0
Remarks
Specifies the incoming speed limit for this user. The value of 0 (zero) means "no limitation".
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Integer
UserOtpAlgorithm Property (OTPServer Class)
The algorithm used to generate one-time passwords (OTP) for this user, either HOTP (Hash-based OTP) or TOTP (Time-based OTP).
Syntax
int GetUserOtpAlgorithm(int iUserIndex);
int SetUserOtpAlgorithm(int iUserIndex, int iUserOtpAlgorithm);
Possible Values
OA_NONE(0),
OA_HMAC(1),
OA_TIME(2)
Default Value
0
Remarks
The algorithm used to generate one-time passwords (OTP) for this user, either HOTP (Hash-based OTP) or TOTP (Time-based OTP). In the former case, a value of a dedicated counter is used to generate a unique password, while in the latter the password is generated on the basis of the current time value.
oaHmac | 0 | |
oaTime | 1 |
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Integer
UserOtpValue Property (OTPServer Class)
The user's time interval (TOTP) or Counter (HOTP).
Syntax
int GetUserOtpValue(int iUserIndex);
int SetUserOtpValue(int iUserIndex, int iUserOtpValue);
Default Value
0
Remarks
The user's time interval (TOTP) or Counter (HOTP).
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Integer
UserOutgoingSpeedLimit Property (OTPServer Class)
Specifies the outgoing speed limit for this user.
Syntax
int GetUserOutgoingSpeedLimit(int iUserIndex);
int SetUserOutgoingSpeedLimit(int iUserIndex, int iUserOutgoingSpeedLimit);
Default Value
0
Remarks
Specifies the outgoing speed limit for this user. The value of 0 (zero) means "no limitation".
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Integer
UserPassword Property (OTPServer Class)
The user's authentication password.
Syntax
QString GetUserPassword(int iUserIndex);
int SetUserPassword(int iUserIndex, QString qsUserPassword);
Default Value
""
Remarks
The user's authentication password.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
String
UserPasswordLen Property (OTPServer Class)
Specifies the length of the user's OTP password.
Syntax
int GetUserPasswordLen(int iUserIndex);
int SetUserPasswordLen(int iUserIndex, int iUserPasswordLen);
Default Value
0
Remarks
Specifies the length of the user's OTP password.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Integer
UserSharedSecret Property (OTPServer Class)
Contains the user's secret key, which is essentially a shared secret between the client and server.
Syntax
QByteArray GetUserSharedSecret(int iUserIndex);
int SetUserSharedSecret(int iUserIndex, QByteArray qbaUserSharedSecret);
Remarks
Contains the user's secret key, which is essentially a shared secret between the client and server.
Shared secrets can be used in TLS-driven protocols, as well as in OTP (where it is called a 'key secret') for generating one-time passwords on one side, and validate them on the other.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Byte Array
UserSSHKey Property (OTPServer Class)
Contains the user's SSH key.
Syntax
QByteArray GetUserSSHKey(int iUserIndex);
int SetUserSSHKey(int iUserIndex, QByteArray qbaUserSSHKey);
Remarks
Contains the user's SSH key.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
Byte Array
UserUsername Property (OTPServer Class)
The registered name (login) of the user.
Syntax
QString GetUserUsername(int iUserIndex);
int SetUserUsername(int iUserIndex, QString qsUserUsername);
Default Value
""
Remarks
The registered name (login) of the user.
The UserIndex parameter specifies the index of the item in the array. The size of the array is controlled by the UserCount property.
This property is not available at design time.
Data Type
String
Config Method (OTPServer Class)
Sets or retrieves a configuration setting.
Syntax
QString Config(const QString& qsConfigurationString);
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.
Error Handling
This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
DoAction Method (OTPServer Class)
Performs an additional action.
Syntax
QString DoAction(const QString& qsActionID, const QString& qsActionParams);
Remarks
DoAction is a generic method available in every class. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.
The unique identifier of the action is provided in ActionID parameter. ActionParams contains a list of parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....
Error Handling
This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
IsHOTPPasswordValid Method (OTPServer Class)
Validates a hash-based one-time password.
Syntax
bool IsHOTPPasswordValid(QByteArray qbaKeySecret, int iPasswordLength, int iCounter, const QString& qsPassword);
Remarks
Use this method to validate a hash-based one-time password (HOTP) by using explicit HOTP parameters. For this method to work, no user details need to be provided in Users collection.
Error Handling
This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
IsPasswordValid Method (OTPServer Class)
Validates an OTP password for a user.
Syntax
bool IsPasswordValid(const QString& qsUsername, const QString& qsPassword);
Remarks
Use this method to check a one-time Password for a user specified by UserID. The known users' details need to be provided in Users list.
Error Handling
This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
IsTOTPPasswordValid Method (OTPServer Class)
Validates a time-based one-time password.
Syntax
bool IsTOTPPasswordValid(QByteArray qbaKeySecret, int iPasswordLength, int iTimeInterval, const QString& qsHashAlgorithm, const QString& qsPassword);
Remarks
Use this method to validate a time-based one-time password (TOTP) by using explicit TOTP parameters. For this method to work, no user details need to be provided in Users collection.
Supported hash algorithms:
SB_MAC_ALGORITHM_HMAC_SHA1 | SHA1 | |
SB_MAC_ALGORITHM_HMAC_SHA256 | SHA256 | |
SB_MAC_ALGORITHM_HMAC_SHA512 | SHA512 |
Error Handling
This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.
Error Event (OTPServer Class)
Information about errors during one-time password (OTP) processing.
Syntax
class OTPServerErrorEventParams { public: int ErrorCode(); const QString &Description(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void Error(OTPServerErrorEventParams *e);
// Or, subclass OTPServer and override this emitter function. virtual int FireError(OTPServerErrorEventParams *e) {...}
Remarks
This event is fired in case of exceptional conditions during OTP checks.
ErrorCode contains an error code and Description contains a textual description of the error.
Notification Event (OTPServer Class)
This event notifies the application about an underlying control flow event.
Syntax
class OTPServerNotificationEventParams { public: const QString &EventID(); const QString &EventParam(); int EventRetVal(); void SetEventRetVal(int iRetVal); };
// To handle, connect one or more slots to this signal. void Notification(OTPServerNotificationEventParams *e);
// Or, subclass OTPServer and override this emitter function. virtual int FireNotification(OTPServerNotificationEventParams *e) {...}
Remarks
The class fires this event to let the application know about some event, occurrence, or milestone in the component. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.
The unique identifier of the event is provided in EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the component, the exact action it is performing, or the document being processed, one or both may be omitted.
Configuration Settings (OTPServer Class)
The class accepts one or more of the following configuration settings. Configuration 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.OTPServer Configuration Settings | ||||||||||||||||||||||||||||||
BaseTime: .Defines the Time-based OTP (TOTP) server's base time. | ||||||||||||||||||||||||||||||
Delta: .Specifies the resynchronization limit. This property is used to overcome the asynchronicity between the one-time password (OTP) client and server. For HOTP servers (HMAC-based OTP, RFC 4226), Delta defines the maximum possible deviation of the client's counter value. For TOTP servers (Time-based OTP, RFC 6238), Delta contains the maximum number of time steps the client can be out of synch. | ||||||||||||||||||||||||||||||
Base Configuration Settings | ||||||||||||||||||||||||||||||
CheckKeyIntegrityBeforeUse:
Enables or disable private key integrity check before use.This global property enables or disables private key material check before each signing operation. This slows down performance a bit,
but prevents a selection of attacks on RSA keys where keys with unknown origins are used.
You can switch this property off to improve performance if your project only uses known, good private keys. |
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CookieCaching:
Specifies whether a cookie cache should be used for HTTP(S) transports.Set this property to enable or disable cookies caching for the class.
Supported values are:
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Cookies: Gets or sets local cookies for the class (supported for HTTPClient, RESTClient and SOAPClient only).Use this property to get cookies from the internal cookie storage of the class and/or restore them back between application sessions. | ||||||||||||||||||||||||||||||
DefDeriveKeyIterations: Specifies the default key derivation algorithm iteration count.This global property sets the default number of iterations for all supported key derivation algorithms. Note that you can provide the required number of iterations by using properties of the relevant key generation component; this global setting is used in scenarios where specific iteration count is not or cannot be provided. | ||||||||||||||||||||||||||||||
EnableClientSideSSLFFDHE:
Enables or disables finite field DHE key exchange support in TLS clients.This global property enables or disables support for finite field DHE key exchange methods in TLS clients. FF DHE is a slower
algorithm if compared to EC DHE; enabling it may result in slower connections.
This setting only applies to sessions negotiated with TLS version 1.3. |
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GlobalCookies: Gets or sets global cookies for all the HTTP transports.Use this property to get cookies from the GLOBAL cookie storage or restore them back between application sessions. These cookies will be used by all the classes that have its CookieCaching property set to "global". | ||||||||||||||||||||||||||||||
HttpUserAgent: Specifies the user agent name to be used by all HTTP clients.This global setting defines the User-Agent field of the HTTP request provides information about the software that initiates the request. This value will be used by all the HTTP clients including the ones used internally in other classes. | ||||||||||||||||||||||||||||||
LogDestination:
Specifies the debug log destination.Contains a comma-separated list of values that specifies where debug log should be dumped.
Supported values are:
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LogDetails:
Specifies the debug log details to dump.Contains a comma-separated list of values that specifies which debug log details to dump.
Supported values are:
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LogFile: Specifies the debug log filename.Use this property to provide a path to the log file. | ||||||||||||||||||||||||||||||
LogFilters:
Specifies the debug log filters.Contains a comma-separated list of value pairs ("name:value") that describe filters.
Supported filter names are:
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LogFlushMode:
Specifies the log flush mode.Use this property to set the log flush mode. The following values are defined:
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LogLevel:
Specifies the debug log level.Use this property to provide the desired debug log level.
Supported values are:
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LogMaxEventCount:
Specifies the maximum number of events to cache before further action is taken.Use this property to specify the log event number threshold. This threshold may have different effects,
depending on the rotation setting and/or the flush mode.
The default value of this setting is 100. |
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LogRotationMode:
Specifies the log rotation mode.Use this property to set the log rotation mode. The following values are defined:
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MaxASN1BufferLength: Specifies the maximal allowed length for ASN.1 primitive tag data.This global property limits the maximal allowed length for ASN.1 tag data for non-content-carrying structures, such as certificates, CRLs, or timestamps. It does not affect structures that can carry content, such as CMS/CAdES messages. This is a security property aiming at preventing DoS attacks. | ||||||||||||||||||||||||||||||
MaxASN1TreeDepth: Specifies the maximal depth for processed ASN.1 trees.This global property limits the maximal depth of ASN.1 trees that the component can handle without throwing an error. This is a security property aiming at preventing DoS attacks. | ||||||||||||||||||||||||||||||
OCSPHashAlgorithm: Specifies the hash algorithm to be used to identify certificates in OCSP requests.This global setting defines the hash algorithm to use in OCSP requests during chain validation. Some OCSP responders can only use older algorithms, in which case setting this property to SHA1 may be helpful. | ||||||||||||||||||||||||||||||
Tag: Allows to store any custom data.Use this config property to store any custom data. | ||||||||||||||||||||||||||||||
UseSharedSystemStorages: Specifies whether the validation engine should use a global per-process copy of the system certificate stores.Set this global property to false to make each validation run use its own copy of system certificate stores. | ||||||||||||||||||||||||||||||
UseSystemOAEPAndPSS:
Enforces or disables the use of system-driven RSA OAEP and PSS computations.This global setting defines who is responsible for performing RSA-OAEP and RSA-PSS computations where the private key is stored in a Windows system store and is exportable.
If set to true, SBB will delegate the computations to Windows via a CryptoAPI call. Otherwise, it will export the key material and perform the computations
using its own OAEP/PSS implementation.
This setting only applies to certificates originating from a Windows system store. |
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UseSystemRandom: Enables or disables the use of the OS PRNG.Use this global property to enable or disable the use of operating system-driven pseudorandom number generation. |
Trappable Errors (OTPServer Class)
OTPServer Errors
1048577 Invalid parameter value (SB_ERROR_INVALID_PARAMETER) | |
1048578 Class is configured incorrectly (SB_ERROR_INVALID_SETUP) | |
1048579 Operation cannot be executed in the current state (SB_ERROR_INVALID_STATE) | |
1048580 Attempt to set an invalid value to a property (SB_ERROR_INVALID_VALUE) | |
1048581 Certificate does not have its private key loaded (SB_ERROR_NO_PRIVATE_KEY) | |
1048581 Cancelled by the user (SB_ERROR_CANCELLED_BY_USER) | |
25165825 User not found (SB_ERROR_OTP_USER_NOT_FOUND) |