PrivateKey PureBasic Reference Documentation

PrivateKey

Current Version: 9.5.0.75

Contains an RSA, DSA, or ECC private key. Provides methods for importing and exporting to/from PEM, DER, PKCS8, PKCS1, PVK, and XML formats. Private keys can be imported/exported to both memory and files.

Object Creation

obj.i = CkPrivateKey::ckCreate()

; Make sure to dispose of the object when finished like this:
CkPrivateKey::ckDispose(obj);

Properties

BitLength
Declare.i ckBitLength(obj.i) ; (read-only)
Introduced in version 9.5.0.49

The bit length (strength) of the private key.

top
DebugLogFilePath
Declare.s ckDebugLogFilePath(obj.i)
Declare setCkDebugLogFilePath(obj.i, value.s)

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

top
KeyType
Declare.s ckKeyType(obj.i) ; (read-only)
Introduced in version 9.5.0.52

The type of private key. Can be "empty", "rsa", "dsa", or "ecc".

top
LastErrorHtml
Declare.s ckLastErrorHtml(obj.i) ; (read-only)

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

top
LastErrorText
Declare.s ckLastErrorText(obj.i) ; (read-only)

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

top
LastErrorXml
Declare.s ckLastErrorXml(obj.i) ; (read-only)

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

top
LastMethodSuccess
Declare.i ckLastMethodSuccess(obj.i)
Declare setCkLastMethodSuccess(obj.i, value.i)
Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of 1 indicates success, a value of 0 indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = 1 and failure = 0.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to 1. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

top
Pkcs8EncryptAlg
Declare.s ckPkcs8EncryptAlg(obj.i)
Declare setCkPkcs8EncryptAlg(obj.i, value.s)
Introduced in version 9.5.0.49

The encryption algorithm to be used when exporting the key to encrypted PKCS8. The default value is "3des". Possible choices also include "aes128", "aes192", and "aes256". All of the encryption algorithm choices use CBC mode.

top
VerboseLogging
Declare.i ckVerboseLogging(obj.i)
Declare setCkVerboseLogging(obj.i, value.i)

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

top
Version
Declare.s ckVersion(obj.i) ; (read-only)

Version of the component/library, such as "9.5.0.63"

top

Methods

GetJwk
Declare.s ckGetJwk(obj.i)
Introduced in version 9.5.0.66

Gets the private key in JWK (JSON Web Key) format.

RSA keys have this JWK format:

         {"kty":"RSA",
          "n":"0vx7agoebGcQ ... JzKnqDKgw",
          "e":"AQAB",
          "d":"X4cTteJY_gn4F ... 4jfcKoAC8Q",
          "p":"83i-7IvMGXoMX ... vn7O0nVbfs",
          "q":"3dfOR9cuYq-0S ... 4vIcb6yelxk",
          "dp":"G4sPXkc6Ya9 ... 8YeiKkTiBj0",
          "dq":"s9lAH9fggBso ... w494Q_cgk",
          "qi":"GyM_p6JrXySi ... zTKhAVRU"}

ECC keys have this JWK format.

         {"kty":"EC",
          "crv":"P-256",
          "x":"MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
          "y":"4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
          "d":"870MB6gfuTJ4HtUnUvYMyJpr5eUZNP4Bk43bVdj3eAE"}

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

top
GetJwkThumbprint
Declare.s ckGetJwkThumbprint(obj.i, hashAlg.s)
Introduced in version 9.5.0.66

Returns the JWK thumbprint for the private key. This is the thumbprint of the JSON Web Key (JWK) as per RFC 7638.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

top
GetPkcs1ENC
Declare.s ckGetPkcs1ENC(obj.i, encoding.s)
Introduced in version 9.5.0.52

Gets the private key in unencrypted binary DER format, preferring PKCS1 if possible, and returns in an encoded string, as specified by the encoding argument.

RSA keys are returned in PKCS1 ASN.1 DER format:

RSAPrivateKey ::= SEQUENCE {
    version           Version,
    modulus           INTEGER,  -- n
    publicExponent    INTEGER,  -- e
    privateExponent   INTEGER,  -- d
    prime1            INTEGER,  -- p
    prime2            INTEGER,  -- q
    exponent1         INTEGER,  -- d mod (p-1)
    exponent2         INTEGER,  -- d mod (q-1)
    coefficient       INTEGER,  -- (inverse of q) mod p
    otherPrimeInfos   OtherPrimeInfos OPTIONAL
}

DSA keys are returned in this ASN.1 DER format:

SEQUENCE(6 elem)
    INTEGER 0
    INTEGER(2048 bit) (p) 
    INTEGER(160 bit) (q) 
    INTEGER(2044 bit) (g) 
    INTEGER(2040 bit) (y - public key) 
    INTEGER(156 bit) (x - private key) 

ECC keys are returned in this ASN.1 DER format:

(from RFC 5915)
ECPrivateKey ::= SEQUENCE {
    version        INTEGER { ecPrivkeyVer1(1) } (ecPrivkeyVer1),
    privateKey     OCTET STRING,
    parameters [0] ECParameters {{ NamedCurve }} OPTIONAL,
    publicKey  [1] BIT STRING OPTIONAL (This is the ANSI X9.63 public key format.)

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

More Information and Examples
top
GetPkcs1Pem
Declare.s ckGetPkcs1Pem(obj.i)
Introduced in version 9.5.0.58

Gets the private key in non-encrypted PEM format, preferring PKCS1 over PKCS8 if possible for the key type.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

top
GetPkcs8ENC
Declare.s ckGetPkcs8ENC(obj.i, encoding.s)
Introduced in version 9.5.0.52

Gets the private key in unencrypted PKCS8 format and returned in an encoded string, as specified by the encoding argument.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

top
GetPkcs8EncryptedENC
Declare.s ckGetPkcs8EncryptedENC(obj.i, encoding.s, password.s)
Introduced in version 9.5.0.52

Writes the private key to password-protected PKCS8 format and returns as an encoded string as specified by the encoding argument. The Pkcs8EncryptAlg property controls the encryption algorithm used to encrypt.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

More Information and Examples
top
GetPkcs8EncryptedPem
Declare.s ckGetPkcs8EncryptedPem(obj.i, password.s)

Writes the private key to password-protected PKCS8 PEM format. The Pkcs8EncryptAlg property controls the encryption algorithm used to encrypt.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

More Information and Examples
top
GetPkcs8Pem
Declare.s ckGetPkcs8Pem(obj.i)

Gets the private key in PKCS8 PEM format.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

top
GetPublicKey
Declare.i ckGetPublicKey(obj.i)
Introduced in version 9.5.0.52

Returns the public key portion of the private key as a public key object.

Returns 0 on failure

top
GetXml
Declare.s ckGetXml(obj.i)

Returns the private key in XML format. The private key is returned unencrypted and the parts are base64 encoded.

RSA keys have this XML format:

<RSAKeyValue>
  <Modulus>...</Modulus>
  <Exponent>...</Exponent>
  <P>...</P>
  <Q>...</Q>
  <DP>...</DP>
  <DQ>...</DQ>
  <InverseQ>...</InverseQ>
  <D>...</D>
</RSAKeyValue>

DSA keys have this XML format:

<DSAKeyValue>
	<P>...</P>
	<Q>...</Q>
	<G>...</G>
	<Y>...</Y>
	<X>...</X>
</DSAKeyValue>

ECC keys have this XML format. The CURVE_NAME could be one of secp256r1, secp384r1, secp521r1, secp256k1 (or others as new curves are supported.)

<ECCKeyValue curve="CURVE_NAME">...</ECCKeyValue>

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

More Information and Examples
top
LoadAnyFormat
Declare.i ckLoadAnyFormat(obj.i, privKeyData.i, password.s)
Introduced in version 9.5.0.75

Loads a private key from any format (PKCS1, PKCS8, PEM, JWK, PVK, etc.). The contents of the key (binary or text) is passed in privKeyData. The password is optional and should be specified if needed.

Returns 1 for success, 0 for failure.

top
LoadEncryptedPem
Declare.i ckLoadEncryptedPem(obj.i, pemStr.s, password.s)

Loads the private key from an in-memory encrypted PEM string. An encrypted PEM contains the private key in encrypted PKCS#8 format, where the data begins and ends with the following tags:

-----BEGIN ENCRYPTED PRIVATE KEY-----
BASE64 ENCODED DATA
-----END ENCRYPTED PRIVATE KEY-----

For those requiring a deeper understanding: The base64 data contains ASN.1 DER with the following structure:

EncryptedPrivateKeyInfo ::= SEQUENCE {
  encryptionAlgorithm  EncryptionAlgorithmIdentifier,
  encryptedData        EncryptedData
}

EncryptionAlgorithmIdentifier ::= AlgorithmIdentifier

EncryptedData ::= OCTET STRING

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadEncryptedPemFile
Declare.i ckLoadEncryptedPemFile(obj.i, path.s, password.s)

Loads a private key from an encrypted PEM file.

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadJwk
Declare.i ckLoadJwk(obj.i, jsonStr.s)
Introduced in version 9.5.0.66

Loads a private key from an JWK (JSON Web Key) string.

RSA keys have this JWK format:

         {"kty":"RSA",
          "n":"0vx7agoebGcQ ... JzKnqDKgw",
          "e":"AQAB",
          "d":"X4cTteJY_gn4F ... 4jfcKoAC8Q",
          "p":"83i-7IvMGXoMX ... vn7O0nVbfs",
          "q":"3dfOR9cuYq-0S ... 4vIcb6yelxk",
          "dp":"G4sPXkc6Ya9 ... 8YeiKkTiBj0",
          "dq":"s9lAH9fggBso ... w494Q_cgk",
          "qi":"GyM_p6JrXySi ... zTKhAVRU"}

ECC keys have this JWK format.

         {"kty":"EC",
          "crv":"P-256",
          "x":"MKBCTNIcKUSDii11ySs3526iDZ8AiTo7Tu6KPAqv7D4",
          "y":"4Etl6SRW2YiLUrN5vfvVHuhp7x8PxltmWWlbbM4IFyM",
          "d":"870MB6gfuTJ4HtUnUvYMyJpr5eUZNP4Bk43bVdj3eAE"}

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadPem
Declare.i ckLoadPem(obj.i, str.s)

Loads the private key from an in-memory PEM string. If the PEM contains an encrypted private key, then the LoadEncryptedPem method should instead be called. This method is for loading an unencrypted private key stored in PEM using PKCS#1 or PKCS#8.

A private key stored in PKCS#1 format begins and ends with the tags:

-----BEGIN RSA PRIVATE KEY-----
BASE64 ENCODED DATA
-----END RSA PRIVATE KEY-----

For those requiring a deeper understanding, the PKCS1 base64 contains ASN.1 in DER encoding with the following structure:

RSAPrivateKey ::= SEQUENCE {
  version           Version,
  modulus           INTEGER,  -- n
  publicExponent    INTEGER,  -- e
  privateExponent   INTEGER,  -- d
  prime1            INTEGER,  -- p
  prime2            INTEGER,  -- q
  exponent1         INTEGER,  -- d mod (p-1)
  exponent2         INTEGER,  -- d mod (q-1)
  coefficient       INTEGER,  -- (inverse of q) mod p
  otherPrimeInfos   OtherPrimeInfos OPTIONAL
}

A private key stored in PKCS#8 format begins and ends with the tags:

-----BEGIN PRIVATE KEY-----
BASE64 ENCODED DATA
-----END PRIVATE KEY-----

For those requiring a deeper understanding, the PKCS8 base64 contains ASN.1 in DER encoding with the following structure:

PrivateKeyInfo ::= SEQUENCE {
  version         Version,
  algorithm       AlgorithmIdentifier,
  PrivateKey      BIT STRING
}

AlgorithmIdentifier ::= SEQUENCE {
  algorithm       OBJECT IDENTIFIER,
  parameters      ANY DEFINED BY algorithm OPTIONAL
}

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadPemFile
Declare.i ckLoadPemFile(obj.i, path.s)

Loads a private key from a PEM file.

Returns 1 for success, 0 for failure.

top
LoadPkcs1File
Declare.i ckLoadPkcs1File(obj.i, path.s)
Introduced in version 9.5.0.58

Loads a private key from a PKCS1 file.

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadPkcs8EncryptedFile
Declare.i ckLoadPkcs8EncryptedFile(obj.i, path.s, password.s)

Loads a private key from an encrypted PKCS8 file.

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

More Information and Examples
top
LoadPkcs8File
Declare.i ckLoadPkcs8File(obj.i, path.s)

Loads a private key from a PKCS8 file.

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadPvkFile
Declare.i ckLoadPvkFile(obj.i, path.s, password.s)

Loads a private key from a PVK format file.

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadXml
Declare.i ckLoadXml(obj.i, xml.s)

Loads a private key from an XML string.

RSA keys have this XML format:

<RSAKeyValue>
  <Modulus>...</Modulus>
  <Exponent>...</Exponent>
  <P>...</P>
  <Q>...</Q>
  <DP>...</DP>
  <DQ>...</DQ>
  <InverseQ>...</InverseQ>
  <D>...</D>
</RSAKeyValue>

DSA keys have this XML format:

<DSAKeyValue>
	<P>...</P>
	<Q>...</Q>
	<G>...</G>
	<Y>...</Y>
	<X>...</X>
</DSAKeyValue>

ECC keys have this XML format. The CURVE_NAME could be one of secp256r1, secp384r1, secp521r1, secp256k1 (or others as new curves are supported.)

<ECCKeyValue curve="CURVE_NAME">...</ECCKeyValue>

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
LoadXmlFile
Declare.i ckLoadXmlFile(obj.i, path.s)

Loads a private key from an XML file.

Note: Each of the private key Load* methods willl auto-recognize the content and will parse appropriately. The private key should be successfully loaded even when the wrong format data is passed to the wrong method.

Returns 1 for success, 0 for failure.

top
SaveLastError
Declare.i ckSaveLastError(obj.i, path.s)

Saves the last-error information (the contents of LastErrorXml) to an XML formatted file.

Returns 1 for success, 0 for failure.

top
SavePemFile
Declare.i ckSavePemFile(obj.i, path.s)
Introduced in version 9.5.0.58

Saves the private key to an unencrypted PKCS1 PEM format file.

Returns 1 for success, 0 for failure.

top
SavePkcs1File
Declare.i ckSavePkcs1File(obj.i, path.s)
Introduced in version 9.5.0.58

Saves the private key to an unencrypted binary PKCS1 format file.

Returns 1 for success, 0 for failure.

top
SavePkcs8EncryptedFile
Declare.i ckSavePkcs8EncryptedFile(obj.i, password.s, path.s)

Saves the private key to a password-protected PKCS8 format file. The Pkcs8EncryptAlg property controls the encryption algorithm used to encrypt.

Returns 1 for success, 0 for failure.

top
SavePkcs8EncryptedPemFile
Declare.i ckSavePkcs8EncryptedPemFile(obj.i, password.s, path.s)

Saves the private key to a password-protected PKCS8 PEM format file. The Pkcs8EncryptAlg property controls the encryption algorithm used to encrypt.

Returns 1 for success, 0 for failure.

top
SavePkcs8File
Declare.i ckSavePkcs8File(obj.i, path.s)

Saves the private key to an unencrypted binary PKCS8 format file.

Returns 1 for success, 0 for failure.

top
SavePkcs8PemFile
Declare.i ckSavePkcs8PemFile(obj.i, path.s)

Saves the private key to a PKCS8 PEM format file.

Returns 1 for success, 0 for failure.

top
SaveXmlFile
Declare.i ckSaveXmlFile(obj.i, path.s)

Saves the private key to an XML file.

Returns 1 for success, 0 for failure.

top