OpenPGP Component

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The OpenPGP component is used to encrypt/decrypt and sign/verify PGP messages.

Syntax

TipgOpenPGP

Remarks

The OpenPGP component supports encrypting/decrypting and signing/verifying OpenPGP messages. Supported message formats are specified by RFC 4880, in addition to RFC 9580, which introduces support for OpenPGP Version 6.

The Encrypt, Sign, and SignAndEncrypt methods are used to create a message to be sent to your partner. You can additionally create messages bound for multiple recipients with different keys, simultaneously encrypt and compress with the most popular compression algorithms, and control other aspects such as the encrypting algorithm to use.

When a message is received, the Decrypt, VerifySignature, and DecryptAndVerifySignature methods are used to process the incoming message.

The Keys property holds the key (with private key) used to sign and decrypt.

The SignerKeys property holds the key used to verify a signature.

The RecipientKeys property holds the key used to encrypt.

Input and Output Properties

The component 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.

Property List

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

Method List

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

Event List

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

Config Settings

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

ASCIIArmor Property (OpenPGP Component)

Specifies whether to use ASCII armor to encode the output message.

Syntax

__property bool ASCIIArmor = { read=FASCIIArmor, write=FSetASCIIArmor };

Default Value

false

Remarks

This property controls whether or not ASCII armoring is used on the output message. The default value is False.

Data Type

Boolean

AutoSelectAlgorithms Property (OpenPGP Component)

Whether to automatically select algorithms when encrypting or signing.

Syntax

__property int AutoSelectAlgorithms = { read=FAutoSelectAlgorithms, write=FSetAutoSelectAlgorithms };

Default Value

0

Remarks

This property is set to the binary 'OR' of one or more options indicating which algorithms to automatically select.

When enabled automatic selection is performed by examining the preferred algorithms specified by the key.

When Encrypt is called the component will read the preferred encryption algorithm and compression method from the key specified in the RecipientKey* properties.

If multiple keys are specified the preferred encryption algorithm and compression method from the last key is used. The EncryptingAlgorithm and CompressionMethod properties are ignored.

When Sign is called the component will read the preferred MAC algorithm and compression method from the private key specified in the Key* properties. If multiple keys are specified the preferred MAC algorithm and compression method from the last key is used. The SigningAlgorithm and CompressionMethod properties are ignored.

The list below defines available options.

The default value is 0 which means algorithms are not automatically selected.

Data Type

Integer

ClearSignature Property (OpenPGP Component)

Specifies whether or not to create a cleartext signature.

Syntax

__property bool ClearSignature = { read=FClearSignature, write=FSetClearSignature };

Default Value

false

Remarks

This property controls whether or not a cleartext signature is created during signing. The default value is False. When set to true a clear text signature will be created when Sign is called.

Data Type

Boolean

CompressionMethod Property (OpenPGP Component)

The compression algorithm used.

Syntax

__property String CompressionMethod = { read=FCompressionMethod, write=FSetCompressionMethod };

Default Value

"zip"

Remarks

This property specifies which compression method is used when generating output. Possible values are:

• zip (default)
• zlib
• bzip2
• none or uncompressed

Data Type

String

DetachedSignature Property (OpenPGP Component)

Specifies whether or not to generate a detached signature when signing a message.

Syntax

__property bool DetachedSignature = { read=FDetachedSignature, write=FSetDetachedSignature };

Default Value

false

Remarks

This property specifies whether or not a detached signature is created when signing a message. The default value is False.

If set to true the output will only be the signature. The data being signed will not be included in the output. If set to true ClearSignature will be ignored.

When this property is false (default) the signature is not detached. The output will contain both the signed data and the signature.

Data Type

Boolean

EncryptingAlgorithm Property (OpenPGP Component)

The encryption algorithm used when encrypting.

Syntax

__property String EncryptingAlgorithm = { read=FEncryptingAlgorithm, write=FSetEncryptingAlgorithm };

Default Value

"AES128"

Remarks

This property specifies the encryption algorithm used when encrypting. Possible values are:

• CAST5
• 3DES or TripleDES
• AES256
• AES192
• AES128 (default)
• BLOWFISH
• TWOFISH
• IDEA
• AES256-OCB (AEAD)
• AES192-OCB (AEAD)
• AES128-OCB (AEAD)
• AES256-GCM (AEAD)
• AES192-GCM (AEAD)
• AES128-GCM (AEAD)

Note that if UseArgon2 is enabled, and SymmetricPassphrase is specified, an AEAD encryption algorithm (AES*-OCB and AES*-GCM) must be specified for symmetric encryption. If UseArgon2 is disabled, and an AEAD encryption algorithm is specified, the AEAD mode (OCB or GCM) will be ignored when performing symmetric encryption.

An AEAD encryption algorithm may optionally be utilized when encrypting messages (when calling Encrypt). In this case, the AEADChunkSizeExp configuration will specify the chunk size for splitting plaintext for encryption. Please see AEADChunkSizeExp for additional details.

Data Type

String

InputFile Property (OpenPGP Component)

The file to process.

Syntax

__property String InputFile = { read=FInputFile, write=FSetInputFile };

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 component 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.

Data Type

String

InputMessage Property (OpenPGP Component)

The message to process.

Syntax

__property String InputMessage = { read=FInputMessage, write=FSetInputMessage };
__property DynamicArray<Byte> InputMessageB = { read=FInputMessageB, write=FSetInputMessageB };

Default Value

""

Remarks

This property specifies the message to be processed. Set this property to the OpenPGP message content.

Input and Output Properties

The component 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.

Data Type

Byte Array

KeyCount Property (OpenPGP Component)

The number of records in the Key arrays.

Syntax

__property int KeyCount = { read=FKeyCount, write=FSetKeyCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• KeyEncoded
• KeyKeyring
• KeyPassphrase
• KeyUserId

The array indices start at 0 and end at KeyCount - 1.

This property is not available at design time.

Data Type

Integer

KeyEncoded Property (OpenPGP Component)

The key.

Syntax

__property String KeyEncoded[int KeyIndex] = { read=FKeyEncoded, write=FSetKeyEncoded };
__property DynamicArray<Byte> KeyEncodedB[int KeyIndex] = { read=FKeyEncodedB, write=FSetKeyEncodedB };

Default Value

""

Remarks

The key. This property can be used to assign a specific key. The KeyFingerprint, KeyId, and KeyUserId properties may also be used to specify a key.

The KeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KeyCount property.

This property is not available at design time.

Data Type

Byte Array

KeyKeyring Property (OpenPGP Component)

The location of the keyring.

Syntax

__property String KeyKeyring[int KeyIndex] = { read=FKeyKeyring, write=FSetKeyKeyring };

Default Value

""

Remarks

The location of the keyring.

If the keyring is stored in a directory, set this property to the directory. The directory must contain the files "secring.gpg" and "pubring.gpg". A keyring may also be stored in a single file. If the keyring is a file this property should be set to the path of the file.

When This property is set the component will read the keyring and populate the Key property with the first key found in the keyring. Set KeyUserId to select a different key in the current keyring.

The KeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KeyCount property.

This property is not available at design time.

Data Type

String

KeyPassphrase Property (OpenPGP Component)

The passphrase for the key's secret key (if any).

Syntax

__property String KeyPassphrase[int KeyIndex] = { read=FKeyPassphrase, write=FSetKeyPassphrase };

Default Value

""

Remarks

The passphrase for the key's secret key (if any). This must be specified before operations requiring the secret key are attempted. The passphrase may be supplied in this property or through the KeyPassphrase event, which will fire when a passphrase is required.

The passphrase is required when using the following methods in KeyMgr:

• AddUserId
• SignUserId
• ChangeExpirationDate
• ChangePassphrase

When using the OpenPGP component, or an email-based component, the following methods require a passphrase for the key:

• Decrypt
• Sign
• SignAndEncrypt

The KeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KeyCount property.

This property is not available at design time.

Data Type

String

KeyUserId Property (OpenPGP Component)

The user Id of the key.

Syntax

__property String KeyUserId[int KeyIndex] = { read=FKeyUserId, write=FSetKeyUserId };

Default Value

""

Remarks

The user Id of the key. When a key is loaded this property is populated with the user Id associated with the key. This property may be set to load a key from the Keyring. When this property is set the component will search the Keyring for a key associated with the UserId specified.

When loading a key with multiple user Ids, this property will be populated with the UserId that was most recently added to the key. To discover all of the UserIds associated with a key query this property and KeyOtherUserIds after loading the key.

The UserId format is:

FirstName LastName (Comment) <Email>

Note that for OpenPGP v6, a key may be created with or without a UserId, as the field is optional. If a key was created without a UserId, the key's Fingerprint can be used as it's identifier instead.

When using this property to select a key you may also specify the key's Id, or any of its subkeys' Ids, instead of a user Id. The component will then search for a key with a matching Id. This is helpful in situations where you do not have the UserId but still need to load the key, such as within the OpenPGP component's RecipientInfo event.

The KeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the KeyCount property.

This property is not available at design time.

Data Type

String

MessageHeaderCount Property (OpenPGP Component)

The number of records in the MessageHeader arrays.

Syntax

__property int MessageHeaderCount = { read=FMessageHeaderCount, write=FSetMessageHeaderCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• MessageHeaderField
• MessageHeaderValue

The array indices start at 0 and end at MessageHeaderCount - 1.

This property is not available at design time.

Data Type

Integer

MessageHeaderField Property (OpenPGP Component)

This property contains the name of the HTTP header (this is the same case as it is delivered).

Syntax

__property String MessageHeaderField[int MessageHeaderIndex] = { read=FMessageHeaderField, write=FSetMessageHeaderField };

Default Value

""

Remarks

This property contains the name of the HTTP Header (this is the same case as it is delivered).

The MessageHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageHeaderCount property.

This property is not available at design time.

Data Type

String

MessageHeaderValue Property (OpenPGP Component)

This property contains the header contents.

Syntax

__property String MessageHeaderValue[int MessageHeaderIndex] = { read=FMessageHeaderValue, write=FSetMessageHeaderValue };

Default Value

""

Remarks

This property contains the Header contents.

The MessageHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the MessageHeaderCount property.

This property is not available at design time.

Data Type

String

OutputFile Property (OpenPGP Component)

The output file.

Syntax

__property String OutputFile = { read=FOutputFile, write=FSetOutputFile };

Default Value

""

Remarks

This property specifies the file to which the output will be written. This may be set to an absolute or relative path.

Input and Output Properties

The component 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.

Data Type

String

OutputMessage Property (OpenPGP Component)

The output message after processing.

Syntax

__property String OutputMessage = { read=FOutputMessage, write=FSetOutputMessage };
__property DynamicArray<Byte> OutputMessageB = { read=FOutputMessageB, write=FSetOutputMessageB };

Default Value

""

Remarks

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

Input and Output Properties

The component 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.

Data Type

Byte Array

Overwrite Property (OpenPGP Component)

Indicates whether or not the component should overwrite files.

Syntax

__property bool Overwrite = { read=FOverwrite, write=FSetOverwrite };

Default Value

false

Remarks

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

Data Type

Boolean

RecipientKeyCount Property (OpenPGP Component)

The number of records in the RecipientKey arrays.

Syntax

__property int RecipientKeyCount = { read=FRecipientKeyCount, write=FSetRecipientKeyCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• RecipientKeyEncoded
• RecipientKeyKeyring
• RecipientKeyUserId

The array indices start at 0 and end at RecipientKeyCount - 1.

This property is not available at design time.

Data Type

Integer

RecipientKeyEncoded Property (OpenPGP Component)

The key.

Syntax

__property String RecipientKeyEncoded[int RecipientKeyIndex] = { read=FRecipientKeyEncoded, write=FSetRecipientKeyEncoded };
__property DynamicArray<Byte> RecipientKeyEncodedB[int RecipientKeyIndex] = { read=FRecipientKeyEncodedB, write=FSetRecipientKeyEncodedB };

Default Value

""

Remarks

The key. This property can be used to assign a specific key. The RecipientKeyFingerprint, RecipientKeyId, and RecipientKeyUserId properties may also be used to specify a key.

The RecipientKeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RecipientKeyCount property.

This property is not available at design time.

Data Type

Byte Array

RecipientKeyKeyring Property (OpenPGP Component)

The location of the keyring.

Syntax

__property String RecipientKeyKeyring[int RecipientKeyIndex] = { read=FRecipientKeyKeyring, write=FSetRecipientKeyKeyring };

Default Value

""

Remarks

The location of the keyring.

If the keyring is stored in a directory, set this property to the directory. The directory must contain the files "secring.gpg" and "pubring.gpg". A keyring may also be stored in a single file. If the keyring is a file this property should be set to the path of the file.

When This property is set the component will read the keyring and populate the Key property with the first key found in the keyring. Set KeyUserId to select a different key in the current keyring.

The RecipientKeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RecipientKeyCount property.

This property is not available at design time.

Data Type

String

RecipientKeyUserId Property (OpenPGP Component)

The user Id of the key.

Syntax

__property String RecipientKeyUserId[int RecipientKeyIndex] = { read=FRecipientKeyUserId, write=FSetRecipientKeyUserId };

Default Value

""

Remarks

The user Id of the key. When a key is loaded this property is populated with the user Id associated with the key. This property may be set to load a key from the Keyring. When this property is set the component will search the Keyring for a key associated with the UserId specified.

When loading a key with multiple user Ids, this property will be populated with the UserId that was most recently added to the key. To discover all of the UserIds associated with a key query this property and KeyOtherUserIds after loading the key.

The UserId format is:

FirstName LastName (Comment) <Email>

Note that for OpenPGP v6, a key may be created with or without a UserId, as the field is optional. If a key was created without a UserId, the key's Fingerprint can be used as it's identifier instead.

When using this property to select a key you may also specify the key's Id, or any of its subkeys' Ids, instead of a user Id. The component will then search for a key with a matching Id. This is helpful in situations where you do not have the UserId but still need to load the key, such as within the OpenPGP component's RecipientInfo event.

The RecipientKeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RecipientKeyCount property.

This property is not available at design time.

Data Type

String

SignerKeyCount Property (OpenPGP Component)

The number of records in the SignerKey arrays.

Syntax

__property int SignerKeyCount = { read=FSignerKeyCount, write=FSetSignerKeyCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• SignerKeyEncoded
• SignerKeyKeyring
• SignerKeyUserId

The array indices start at 0 and end at SignerKeyCount - 1.

This property is not available at design time.

Data Type

Integer

SignerKeyEncoded Property (OpenPGP Component)

The key.

Syntax

__property String SignerKeyEncoded[int SignerKeyIndex] = { read=FSignerKeyEncoded, write=FSetSignerKeyEncoded };
__property DynamicArray<Byte> SignerKeyEncodedB[int SignerKeyIndex] = { read=FSignerKeyEncodedB, write=FSetSignerKeyEncodedB };

Default Value

""

Remarks

The key. This property can be used to assign a specific key. The SignerKeyFingerprint, SignerKeyId, and SignerKeyUserId properties may also be used to specify a key.

The SignerKeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the SignerKeyCount property.

This property is not available at design time.

Data Type

Byte Array

SignerKeyKeyring Property (OpenPGP Component)

The location of the keyring.

Syntax

__property String SignerKeyKeyring[int SignerKeyIndex] = { read=FSignerKeyKeyring, write=FSetSignerKeyKeyring };

Default Value

""

Remarks

The location of the keyring.

If the keyring is stored in a directory, set this property to the directory. The directory must contain the files "secring.gpg" and "pubring.gpg". A keyring may also be stored in a single file. If the keyring is a file this property should be set to the path of the file.

When This property is set the component will read the keyring and populate the Key property with the first key found in the keyring. Set KeyUserId to select a different key in the current keyring.

The SignerKeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the SignerKeyCount property.

This property is not available at design time.

Data Type

String

SignerKeyUserId Property (OpenPGP Component)

The user Id of the key.

Syntax

__property String SignerKeyUserId[int SignerKeyIndex] = { read=FSignerKeyUserId, write=FSetSignerKeyUserId };

Default Value

""

Remarks

The user Id of the key. When a key is loaded this property is populated with the user Id associated with the key. This property may be set to load a key from the Keyring. When this property is set the component will search the Keyring for a key associated with the UserId specified.

When loading a key with multiple user Ids, this property will be populated with the UserId that was most recently added to the key. To discover all of the UserIds associated with a key query this property and KeyOtherUserIds after loading the key.

The UserId format is:

FirstName LastName (Comment) <Email>

Note that for OpenPGP v6, a key may be created with or without a UserId, as the field is optional. If a key was created without a UserId, the key's Fingerprint can be used as it's identifier instead.

When using this property to select a key you may also specify the key's Id, or any of its subkeys' Ids, instead of a user Id. The component will then search for a key with a matching Id. This is helpful in situations where you do not have the UserId but still need to load the key, such as within the OpenPGP component's RecipientInfo event.

The SignerKeyIndex parameter specifies the index of the item in the array. The size of the array is controlled by the SignerKeyCount property.

This property is not available at design time.

Data Type

String

SigningAlgorithm Property (OpenPGP Component)

The signature hash algorithm used when signing.

Syntax

__property String SigningAlgorithm = { read=FSigningAlgorithm, write=FSetSigningAlgorithm };

Default Value

"SHA256"

Remarks

This property specifies the signature hash algorithm used when signing. Possible values are:

• SHA1
• MD5
• SHA256 (default)
• SHA384
• SHA512
• SHA224
• RIPEMD160
• SHA3-256
• SHA3-512

Data Type

String

Config Method (OpenPGP Component)

Sets or retrieves a configuration setting.

Syntax

String __fastcall Config(String ConfigurationString);

Remarks

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

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, 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.

Decrypt Method (OpenPGP Component)

Decrypts the message.

Syntax

void __fastcall Decrypt();

Remarks

This method decrypts the specified message.

The message will be decrypted using the keys specified in Keys. Before decryption begins the component will fire the RecipientInfo event with information about the encrypted message, including the key used to encrypt the message. Within this event you may use the available information to load the correct key into Keys.

DecryptAndVerifySignature Method (OpenPGP Component)

Decrypts and verifies the signature of the message.

Syntax

void __fastcall DecryptAndVerifySignature();

Remarks

This method attempts to both decrypt and verify the signature of the message. All of the properties affected by calling the Decrypt and VerifySignature methods are affected in the same manner.

This method may be used when the data is signed, encrypted, or signed and encrypted. For instance, if the data is encrypted but not signed you may still use this method and the component will perform the decryption without error.

The message will be decrypted using the keys specified in Keys. Before decryption begins the component will fire the RecipientInfo event with information about the encrypted message, including the key used to encrypt the message. Within this event you may use the available information to load the correct key into Keys.

The message will be verified using the keys specified in SignerKeys. Before verification begins the component will fire the SignatureInfo event with information about the signature including the key used to sign the message. Within this event you may use the information available to load the correct key into SignerKeys.

By default, if the signature is not valid the component raises an exception. The configuration setting RequireValidSignature may be set to False to disable this requirement. When RequireValidSignature is set to False, the Status parameter of the VerificationStatus event should be checked to determine the result of the operation.

NOTE: This method does not attempt to check the validity of the signing key itself.

Encrypt Method (OpenPGP Component)

Encrypts the message.

Syntax

void __fastcall Encrypt();

Remarks

This method encrypts the specified message.

The message is encrypted with the public keys specified in RecipientKeys.

When encrypting, the following properties may be used to further configure the component:

• ASCIIArmor
• CompressionMethod
• EncryptingAlgorithm

GetRecipientInfo Method (OpenPGP Component)

Gets recipient information for an encrypted message.

Syntax

void __fastcall GetRecipientInfo();

Remarks

This method will fire a RecipientInfo event for every recipient key for which the message has been encrypted. The event will provide the KeyId and Fingerprint, which can be used to identify the correct key to be used for decryption.

Interrupt Method (OpenPGP Component)

Interrupt the current method.

Syntax

void __fastcall Interrupt();

Remarks

If there is no method in progress, Interrupt simply returns, doing nothing.

Reset Method (OpenPGP Component)

Resets the component properties.

Syntax

void __fastcall Reset();

Remarks

This method resets all message and key properties to their default values.

Sign Method (OpenPGP Component)

Signs the message.

Syntax

void __fastcall Sign();

Remarks

This method signs the specified message.

The message is signed with the private key specified in the Key* properties.

When signing, the following properties may be used to further configure the component:

• ASCIIArmor
• ClearSignature
• DetachedSignature
• SigningAlgorithm

SignAndEncrypt Method (OpenPGP Component)

Signs and encrypts the current message.

Syntax

void __fastcall SignAndEncrypt();

Remarks

This method signs and encrypts the specified message.

The message is encrypted with the public keys specified in RecipientKeys and signed with the private key specified in Keys.

When encrypting, the following properties may be used to further configure the component:

• ASCIIArmor
• CompressionMethod
• EncryptingAlgorithm

When signing, the following properties may be used to further configure the component:

• ASCIIArmor
• ClearSignature
• DetachedSignature
• SigningAlgorithm

VerifySignature Method (OpenPGP Component)

Verifies the signature of the current message.

Syntax

void __fastcall VerifySignature();

Remarks

This method verifies the signature of the message.

The message will be verified using the keys specified in SignerKeys. Before verification begins the component will fire the SignatureInfo event with information about the signature including the key used to sign the message. Within this event you may use the information available to load the correct key into SignerKeys.

By default, if the signature is not valid the component raises an exception. The configuration setting RequireValidSignature may be set to False to disable this requirement. When RequireValidSignature is set to False, the Status parameter of the VerificationStatus event should be checked to determine the result of the operation.

Error Event (OpenPGP Component)

Fired when information is available about errors during data delivery.

Syntax

typedef struct {
  int ErrorCode;
  String Description;
} TipgOpenPGPErrorEventParams;
typedef void __fastcall (__closure *TipgOpenPGPErrorEvent)(System::TObject* Sender, TipgOpenPGPErrorEventParams *e);
__property TipgOpenPGPErrorEvent OnError = { read=FOnError, write=FOnError };

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the component raises an exception.

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.

KeyPassphrase Event (OpenPGP Component)

Fired if the passphrase of current key is incorrect or empty.

Syntax

typedef struct {
  String UserId;
  String KeyId;
  String Fingerprint;
  String Passphrase;
} TipgOpenPGPKeyPassphraseEventParams;
typedef void __fastcall (__closure *TipgOpenPGPKeyPassphraseEvent)(System::TObject* Sender, TipgOpenPGPKeyPassphraseEventParams *e);
__property TipgOpenPGPKeyPassphraseEvent OnKeyPassphrase = { read=FOnKeyPassphrase, write=FOnKeyPassphrase };

Remarks

This event fires when the passphrase for the key is required. The passphrase must be specified before operations requiring the secret key are attempted. The passphrase may be supplied by setting the Passphrase parameter in this event, or by specifying the KeyPassphrase property before attempting the operation.

The passphrase is required when using the following methods in KeyMgr:

• AddUserId
• SignUserId
• ChangeExpirationDate
• ChangePassphrase

When using the OpenPGP component, or an email-based component, the following methods require a passphrase for the key:

• Decrypt
• Sign
• SignAndEncrypt

UserId holds the user Id of the key the passphrase is required for.

The UserId format is:

FirstName LastName (Comment) <Email>

Note that for OpenPGP v6, a key may be created with or without a UserId, as the field is optional. If a key was created without a UserId, the key's Fingerprint can be used as it's identifier instead.

KeyId is the hex-encoded, 4-byte or 8-byte Id of the key the passphrase is required for. For OpenPGP v4 keys and earlier, the key Id corresponds to the last 4 or 8 bytes of the key's Fingerprint. For OpenPGP v6 keys, the key Id corresponds to the first 8 bytes of the key's Fingerprint instead. For instance:

5E70662EA810E768

Fingerprint holds the hex-encoded, 20-byte fingerprint of the key the passphrase is required for. This is in the form:

5E70662EA810E768391A2FE8F7B7D49C89C9D7B1

Progress Event (OpenPGP Component)

Fired as progress is made.

Syntax

typedef struct {
  __int64 BytesProcessed;
  int PercentProcessed;
  int Operation;
  bool IsEOF;
} TipgOpenPGPProgressEventParams;
typedef void __fastcall (__closure *TipgOpenPGPProgressEvent)(System::TObject* Sender, TipgOpenPGPProgressEventParams *e);
__property TipgOpenPGPProgressEvent OnProgress = { read=FOnProgress, write=FOnProgress };

Remarks

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

The PercentProcessed parameter indicates the current status of the operation.

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

The Operation parameter is only applicable when either ReadFromProgressEvent or WriteToProgressEvent is set to True. This parameter defines whether a Read or Write operation is required. If the configuration settings are not set this parameter will always return 0. Possible values are:

The IsEOF parameter is only applicable when either ReadFromProgressEvent or WriteToProgressEvent is set to True. This parameter defines whether the Read or Write operation is complete. When the Operation is Read (1) this parameter must be set to indicate that all data has been supplied to the component. When the Operation is Write (2) this value may be queried to determine when all data has been processed.

RecipientInfo Event (OpenPGP Component)

Fired for each recipient key of the encrypted message.

Syntax

typedef struct {
  String KeyId;
  String Fingerprint;
  String PublicKeyAlgorithm;
} TipgOpenPGPRecipientInfoEventParams;
typedef void __fastcall (__closure *TipgOpenPGPRecipientInfoEvent)(System::TObject* Sender, TipgOpenPGPRecipientInfoEventParams *e);
__property TipgOpenPGPRecipientInfoEvent OnRecipientInfo = { read=FOnRecipientInfo, write=FOnRecipientInfo };

Remarks

This event fires when the Decrypt or DecryptAndVerifySignature method is called.

KeyId is the hex-encoded 4- or 8-byte Id of the key used to encrypt the message. If a subkey was used to encrypt the message this will be the Id of that subkey. For OpenPGP v4 keys and earlier, the key Id corresponds to the last 4 or 8 bytes of the key's Fingerprint. For OpenPGP v6 keys, the key Id corresponds to the first 8 bytes of the key's Fingerprint instead. For instance:

5E70662EA810E768

Fingerprint holds the hex-encoded, 20-byte fingerprint of the key. This is in the form:

5E70662EA810E768391A2FE8F7B7D49C89C9D7B1

The KeyId and Fingerprint parameters can be used to identify the correct key to specify in the Key* properties. The Key* properties can be set from within this event as this event fires directly before the decryption process begins.

It is recommended to use the Fingerprint to identify the correct key, as it is possible for different keys to have the same KeyId.

PublicKeyAlgorithm is the algorithm of the public key used to encrypt the message. Possible values are:

• RSA
• DSA
• ECDSA
• EdDSA
• Ed25519
• Ed448
• RSA-Legacy
• ECDH (Subkeys only)
• X25519 (Subkeys only)
• X448 (Subkeys only)

SignatureInfo Event (OpenPGP Component)

Fired during verification of the signed message.

Syntax

typedef struct {
  String KeyId;
  String Fingerprint;
  String SigningAlgorithm;
  String PublicKeyAlgorithm;
} TipgOpenPGPSignatureInfoEventParams;
typedef void __fastcall (__closure *TipgOpenPGPSignatureInfoEvent)(System::TObject* Sender, TipgOpenPGPSignatureInfoEventParams *e);
__property TipgOpenPGPSignatureInfoEvent OnSignatureInfo = { read=FOnSignatureInfo, write=FOnSignatureInfo };

Remarks

This event fires when the VerifySignature or DecryptAndVerifySignature method is called. It provides information about the signature of the message.

KeyId is the hex-encoded 4- or 8-byte Id of the key used to sign the message. If a subkey was used to sign the message this will be the Id of that subkey. For OpenPGP v4 keys and earlier, the key Id corresponds to the last 4 or 8 bytes of the key's Fingerprint. For OpenPGP v6 keys, the key Id corresponds to the first 8 bytes of the key's Fingerprint instead. For instance:

5E70662EA810E768

Fingerprint holds the hex-encoded, 20-byte fingerprint of the key. This is in the form:

5E70662EA810E768391A2FE8F7B7D49C89C9D7B1

The KeyId and Fingerprint parameters can be used to identify the correct key to specify in the SignerKey* properties. The SignerKey* properties can be set from within this event as this event fires directly before the verification process begins.

It is recommended to use the Fingerprint to identify the correct key, as it is possible for different keys to have the same KeyId.

SigningAlgorithm describes the hash algorithm used when the message was originally signed. This value is applicable only to the message signature, not the key used to sign the message. Possible values are:

• SHA1
• MD5
• SHA256
• SHA384
• SHA512
• SHA224
• RIPEMD160
• SHA3-256
• SHA3-512

PublicKeyAlgorithm is the algorithm of the public key used to sign the message. Possible values are:

• RSA
• DSA
• ECDSA
• EdDSA
• Ed25519
• Ed448
• RSA-Legacy
• ECDH (Subkeys only)
• X25519 (Subkeys only)
• X448 (Subkeys only)

Status Event (OpenPGP Component)

Shows the progress of the operation.

Syntax

typedef struct {
  String Message;
} TipgOpenPGPStatusEventParams;
typedef void __fastcall (__closure *TipgOpenPGPStatusEvent)(System::TObject* Sender, TipgOpenPGPStatusEventParams *e);
__property TipgOpenPGPStatusEvent OnStatus = { read=FOnStatus, write=FOnStatus };

Remarks

The event is fired for informational and logging purposes only. It may be used to track the progress of an operation.

The level of detail is controlled by the LogLevel setting.

VerificationStatus Event (OpenPGP Component)

Fired after verification of the signed message.

Syntax

typedef struct {
  String KeyId;
  String Fingerprint;
  int Status;
} TipgOpenPGPVerificationStatusEventParams;
typedef void __fastcall (__closure *TipgOpenPGPVerificationStatusEvent)(System::TObject* Sender, TipgOpenPGPVerificationStatusEventParams *e);
__property TipgOpenPGPVerificationStatusEvent OnVerificationStatus = { read=FOnVerificationStatus, write=FOnVerificationStatus };

Remarks

This event fires when VerifySignature or DecryptAndVerifySignature is called. It provides information about the result.

KeyId is the hex-encoded 4- or 8-byte Id of the key used to sign the message. For OpenPGP v4 keys and earlier, the key Id corresponds to the last 4 or 8 bytes of the key's Fingerprint. For OpenPGP v6 keys, the key Id corresponds to the first 8 bytes of the key's Fingerprint instead. For instance:

5E70662EA810E768

Fingerprint holds the hex-encoded, 20-byte fingerprint of the key. This is in the form:

5E70662EA810E768391A2FE8F7B7D49C89C9D7B1

Status holds the result of the operation. Possible values are:

Config Settings (OpenPGP Component)

OpenPGP Config Settings

89011C04000102000605025100459B000A0910E2...

5E70662EA810E768

Base Config Settings

Trappable Errors (OpenPGP Component)

OpenPGP Errors