IPWorks Encrypt 2020 Android Edition

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Keymgr Configuration

The component 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 component, access to these internal properties is provided through the Config method.

KeyMgr Configuration Settings

AllowEmptyPassword:   Whether a key can be created without a password.

This controls whether a password will be used to encrypt a key. When true, CreateKey will accept an empty string as the password, leaving the key unencrypted. The default is false.

ChangeSubkeyPassphrase:   Whether or not the passphrase for subkey's should be changed.

This setting determines whether or not subkeys' passphrases should be changed when ChangePassphrase is called. The default value is False.

ContinueOnInvalidKey:   Whether to continue loading the keyring when an invalid key is found.

This setting determines whether the component will continue loading keys when an invalid key is found. This is applicable when calling LoadKeyring. If set to False (default) the component throws an exception. If set to True the component will fire the Error event with information about the key which failed to load, and then continue loading additional keys.

CreateRSASubkeyforEncrypt:   Whether to create a subkey when creating an RSA key.

This setting determines whether the component will additionally create a subkey marked for encryption when calling CreateKey when PublicKeyAlgorithm is set to "RSA". The default is true.

CurrentKeyPrimaryKeyUsageFlags:   The usage flags of the currently selected primary key.

When queried, this will return the usage flags of the currently selected primary key, returned in decimal representation. Individual flags may be checked against the list at UsageFlags.

Curve:   The elliptic curve used when calling CreateKey.

This setting specifies the curve to use when creating ECDSA or EdDSA keys. This setting is only applicable when PublicKeyAlgorithm is set to ECDSA or EdDSA. Possible values are:

ValuePublicKeyAlgorithmDescription
secp256r1 ECDSA NIST curve P-256
secp384r1 ECDSA NIST curve P-384
secp521r1 ECDSA NIST curve P-521
Ed25519 EdDSA Ed25519
secp256k1 EdDSA Secp256k1

The default value is secp256r1 for ECDSA keys and Ed25519 for EdDSA keys.

DSAPublicSubKeyLength:   Specifies the public subkey length when creating a DSA key.

This setting is only applicable when creating DSA keys with CreateKey. This specifies the length of the public ElGamal subkey. The value is 0 means this setting is not used and the subkey will have the length defined in PublicKeyLength. The default value is 0.

EnsureValidDSASignatureHashAlgorithm:   Whether or not to select a suitable signature hash algorithm automatically.

This setting specifies whether the component ensures a valid hash algorithm is selected for use with the loaded DSA or ECDSA key. The default value is True.

DSA Notes

DSA requires that the hash be 160 bits or larger, which means MD5 is not a suitable algorithm. When DSA Signature Hash Algorithm selection is enabled (default) the component will use the preferred algorithm from the key if it meets the requirements for DSA. If the preferred algorithm is MD5 and does not meed the requirements for DSA the component will automatically use a suitable algorithm based on the Q element of the DSA key (may be SHA1, SHA224, or SHA256).

ECDSA Notes

The ECDSA Signature Hash Algorithm requirements are directly related to the Curve used by the key. When this setting is enabled (default) the component will use the preferred algorithm from the key if it meets the requirements for ECDSA. If the preferred algorithm does not meet the requirements the component will automatically select a valid hash algorithm based on the curve as follows:

CurveHash Algorithm
secp256r1 SHA256
secp384r1 SHA384
secp521r1 SHA512
secp256k1 SHA256

ImportAllKeys:   Whether or not to import all keys found in a key file.

When calling ImportKey with a UserId parameter of "*" or "", the component will import all keys found in the file if this property is set to True (default). If this is set to False when the UserId parameter of ImportKey is set to "*" or "", only the first key found in the file will be imported. The default value is True.

KeyEncryptionAlgorithm:   The encryption algorithm used when creating a key.

Specifies the encryption algorithm to use when calling CreateKey. The default value is "CAST5". Possible values are "CAST5", "3DES", "AES256", "AES192", "AES128", "IDEA", and "BLOWFISH".

KeyIdLength:   Specifies the length of the key's Id.

When querying the Id field the value will be returned with the length (in octets) specified. The default value is 4. The only other acceptable value is 8.

KeyUsage:   Flags that show intended use for the key being created.

When calling CreateKey this setting defines the flags that show the intended use for the key. The default value is (0x0F). The value of KeyUsage is a combination of the following flags:

0x01This key may be used to certify other keys.
0x02This key may be used to sign data.
0x0CThis key may be used to encrypt communications and encrypt storage.
0x10The private component of this key may have been split by a secret-sharing mechanism.
0x20This key may be used for authentication.
0x80The private component of this key may be in the possession of more than one person.

KeyValidityTime:   The validity period for the key being created.

When CreateKey creates a new key, the key is valid the moment it is created. KeyValidityTime determines the number of days until expiration. The default value is 365 days. The special value 0 means the key will never expire.

LogLevel:   Specifies the level of detail that is logged.

This setting controls the level of detail that is logged through the Status event. Possible values are:

0 (None)No events are logged.
1 (Info - default)Informational events are logged.
2 (Verbose)Detailed data is logged.
3 (Debug)Debug data is logged.

PublicKeyAlgorithm:   The public key algorithm for the key being created.

Specifies the public key algorithm to use when creating the key via CreateKey. The default value is "RSA". Possible values are:

  • RSA
  • DSA
  • ECDSA
  • EdDSA
  • RSA-Legacy

The "RSA-Legacy" algorithm should not be used under normal circumstances. It should only be used to create PGP 2.6.2 compatible keys, when required. This type of key will not have subkeys.

Note: When creating a DSA key only PublicKeyLength values of 512 and 1024 are supported. Additionally the PublicKeySignatureHashAlgorithm value "MD5" is not supported with DSA keys.

ECDSA and EdDSA Notes

When creating an ECDSA or EdDSA key the PublicKeyLength value is automatically determined based on the Curve. The Curve and SubKeyCurve settings is also applicable.

If Curve and SubKeyCurve are not specified the following defaults will be used:

PublicKeyAlgorithmDefault Curve
ECDSAsecp256r1
EdDSAEd2519

PublicKeyLength:   Specifies the public key length when creating a key.

Specifies the length of the public key when calling CreateKey. The default value is 1024. Common values are 512, 1024, and 2048.

When PublicKeyAlgorithm is set to ECDSA or EdDSA this setting is not applicable and the public key length is automatically determined based on the Curve selected. The public key length values are as follows:

CurvePublic Key Length (bits)
secp256r1256
secp384r1384
secp521r1521
Ed25519 256
secp256k1256

PublicKeyringFile:   The file name of the public keyring file.

This specifies the name of the public keyring file. The default value is "pubring.gpg". This may be set to a file name only, or a full path including the file name.

PublicKeySignatureHashAlgorithm:   The public key signature hash algorithm used when creating a key.

This setting specifies the public key signature algorithm to be used when calling CreateKey. The default value is "SHA256". Possible values are:

  • SHA1
  • MD5
  • SHA256 (default)
  • SHA384
  • SHA512
  • SHA224
RawKeyData:   Returns detailed key and keyring data for debugging purposes.

This setting will return detailed debugging information about the current key and keyring.

RevocationCode:   The reason why the key was revoked.

This setting specifies why the key was revoked. It is only applicable if Revoked is True. This may be set before calling RevokeKey and may be inspected after importing and selecting a revoked key. Possible values are:

0No reason specified
1Key is superseded
2Key material has been compromised
3Key is retired and no longer used
4User Id information is no longer valid
100-110Private Use

The default value is 0.

RevocationReason:   Text describing why the key was revoked.

This setting specifies text description of why the key was revoked. It is only applicable if Revoked is True. This may be set before calling RevokeKey and may be queried after importing and selecting a revoked key. The default value is an empty string.

Revoker:   The revoker's key Id.

This setting returns the key Id of the designated revoker associated with this key. This will only be present if a separate revoker was added to the key (for instance by calling AddRevoker). If more than one revoker was added this setting will return a comma-separated list of key Ids.

SecretKeyringFile:   The file name of the secret keyring file.

This specifies the name of the secret keyring file. The default value is "secring.gpg". This may be set to a file name only, or a full path including the file name.

SubKeyAlgorithm:   The subkey algorithm for the subkey being created.

Specifies the public key algorithm to use when creating the key via CreateKey. The default value is "RSA". Possible values are:

Key AlgorithmSupported Operations
RSA Sign and Encrypt
DSA Sign
Elgamal Encrypt
ECDSA Sign
EdDSA Sign
ECDH Encrypt

SubKeyCurve:   The elliptic curve of the sub key.

When calling CreateKey and PublicKeyAlgorithm is set to ECDSA or EdDSA this setting may optionally be specified to set a curve for the subkey which differs from the key curve specified by Curve. Possible values are:

ValueDescription
secp256r1 NIST curve P-256
secp384r1 NIST curve P-384
secp521r1 NIST curve P-521
Curve25519 Curve25519
Ed25519 Ed25519

The default value for ECDSA keys is the same value as specified in Curve. The default value for EdDSA keys is Curve25519.

Note: It is valid to specify the subkey curve of Curve25519 when Curve is set to secp256r1, secp384r1, or secp521r1. It is also valid to set a subkey curve of secp256r1, secp384r1, or secp521r1 when Curve is set to Ed25519.

SubKeyUsage:   Flags that show intended use for the subkey being created.

When calling CreateSubKey this setting defines the flags that show the intended use for the key. The default value is (0x0C). The value of SubKeyUsage is a combination of the following flags:

0x01This key may be used to certify other keys.
0x02This key may be used to sign data.
0x0CThis key may be used to encrypt communications and encrypt storage.
0x10The private component of this key may have been split by a secret-sharing mechanism.
0x20This key may be used for authentication.
0x80The private component of this key may be in the possession of more than one person.

UseFipsCompliantAlgorithms:   Restricts the usage to FIPS compliant algorithms only.

When enabled the component will only support FIPS compliant algorithms. If a non-FIPS compliant algorithm is used an exception is thrown. The following algorithms are supported when this setting is True:

  • 3DES
  • AES128
  • AES192
  • AES256
  • RSA
  • DSA
  • SHA1
  • SHA256
  • SHA384
  • SHA512
  • SHA224
The default value is False.
VersionHeader:   The Version header value in ASCII armored public keys.

This setting specifies the Version header value included in newly created public keys. This includes keys that are exported via ExportPublicKey where the UseAsciiArmor parameter is true. The default value is "IPWorks! OpenPGP v9.0".

Base Configuration Settings

BuildInfo:   Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

GUIAvailable:   Tells the component whether or not a message loop is available for processing events.

In a GUI-based application, long-running blocking operations may cause the application to stop responding to input until the operation returns. The component will attempt to discover whether or not the application has a message loop and, if one is discovered, it will process events in that message loop during any such blocking operation.

In some non-GUI applications an invalid message loop may be discovered that will result in errant behavior. In these cases, setting GUIAvailable to false will ensure that the component does not attempt to process external events.

LicenseInfo:   Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a component is using. It will return the following information:

  • Product: The product the license is for.
  • Product Key: The key the license was generated from.
  • License Source: Where the license was found (e.g. RuntimeLicense, License File).
  • License Type: The type of license installed (e.g. Royalty Free, Single Server).
UseDaemonThreads:   Whether threads created by the component are daemon threads.

If set to True (default), when the component creates a thread the thread's Daemon property will be explicitly set to True. When set to False the component will not set the Daemon property on the created thread. The default value is True.

UseInternalSecurityAPI:   Tells the component whether or not to use the system security libraries or an internal implementation.

By default the component will use the system security libraries to perform cryptographic functions. Setting this to True tells the component to use the internal implementation instead of using the system's security API.

Copyright (c) 2022 /n software inc. - All rights reserved.
IPWorks Encrypt 2020 Android Edition - Version 20.0 [Build 8161]