CkPublicKey Java Reference Documentation

CkPublicKey

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

Object Creation

CkPublicKey obj = new CkPublicKey();

Properties

void get_DebugLogFilePath(CkString str);
String debugLogFilePath();
void put_DebugLogFilePath(String newVal);

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.

int get_KeySize();

Introduced in version 9.5.0.67

Gets the size (in bits) of the public key. For example: 1024, 2048, etc.

void get_KeyType(CkString str);
String keyType();

Introduced in version 9.5.0.52

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

void get_LastErrorHtml(CkString str);
String lastErrorHtml();

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.

void get_LastErrorText(CkString str);
String lastErrorText();

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.

Concept of LastErrorText

LastErrorText Standard Information

void get_LastErrorXml(CkString str);
String lastErrorXml();

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.

boolean get_LastMethodSuccess();
void put_LastMethodSuccess(boolean newVal);

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of true indicates success, a value of false 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 = true and failure = false.
  • 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 true. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

boolean get_VerboseLogging();
void put_VerboseLogging(boolean newVal);

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

void get_Version(CkString str);
String version();

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

Methods

boolean GetDer(boolean preferPkcs1, CkByteData outData);

Introduced in version 9.5.0.58

Returns the public key in binary DER format. If the key type (such as RSA) supports both PKCS1 and PKCS8 formats, then preferPkcs1 determine which format is returned.

Returns true for success, false for failure.

boolean GetEncoded(boolean preferPkcs1, String encoding, CkString outStr);
String getEncoded(boolean preferPkcs1, String encoding);

Introduced in version 9.5.0.58

Returns the public key in DER format as an encoded string (such as base64 or hex). If the key type (such as RSA) supports both PKCS1 and PKCS8 formats, then preferPkcs1 determine which format is returned. The encoding specifies the encoding, which is typically "base64".

Returns true for success, false for failure.

boolean GetJwk(CkString outStr);
String getJwk();

Introduced in version 9.5.0.66

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

RSA public keys have this JWK format:

         {"kty":"RSA",
          "n": "0vx7agoebGcQSuuPiLJXZptN9 ... U8awapJzKnqDKgw",
          "e":"AQAB"}

ECC public keys have this JWK format:

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

Returns true for success, false for failure.

(Android™) Get ECC Public Key in JWK Format (JSON Web Key)

(Java) Get ECC Public Key in JWK Format (JSON Web Key)

(Android™) Get RSA Public Key in JWK Format (JSON Web Key)

(Java) Get RSA Public Key in JWK Format (JSON Web Key)

boolean GetJwkThumbprint(String hashAlg, CkString outStr);
String getJwkThumbprint(String hashAlg);

Introduced in version 9.5.0.66

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

Returns true for success, false for failure.

(Android™) Compute JWK Thumbprint for RSA and EC Public Keys

(Java) Compute JWK Thumbprint for RSA and EC Public Keys

boolean GetOpenSslDer(CkByteData outData);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call GetDer with preference for PKCS8 instead.

Gets the public key in PKCS8 DER format.

Returns true for success, false for failure.

boolean GetOpenSslPem(CkString outStr);
String getOpenSslPem();

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call GetPem with preference for PKCS8 instead.

Gets the public key in PKCS8 PEM format.

Returns true for success, false for failure.

boolean GetPem(boolean preferPkcs1, CkString outStr);
String getPem(boolean preferPkcs1);

Introduced in version 9.5.0.58

Returns the public key in PEM format. If the key type (such as RSA) supports both PKCS1 and PKCS8 formats, then preferPkcs1 determine which format is returned.

Returns true for success, false for failure.

boolean GetPkcs1ENC(String encoding, CkString outStr);
String getPkcs1ENC(String encoding);

Introduced in version 9.5.0.52
This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call GetEncoded with preference for PKCS1 instead.

Gets the public key in PKCS1 format and returns in an encoded string, as specified by the encoding argument.

Returns true for success, false for failure.

Supported Binary Encodings

boolean GetPkcs8ENC(String encoding, CkString outStr);
String getPkcs8ENC(String encoding);

Introduced in version 9.5.0.52
This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call GetEncoded with preference for PKCS8 instead.

Gets the public key in PKCS8 format and returns in an encoded string, as specified by the encoding argument.

Returns true for success, false for failure.

Supported Binary Encodings

boolean GetRsaDer(CkByteData outData);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call GetDer with preference for PKCS1 instead.

Gets the public key in PKCS1 DER format.

Returns true for success, false for failure.

boolean GetXml(CkString outStr);
String getXml();

Gets the public key in XML format. The format depends on the key type. The key parts indicated by "..." are base64 encoded.

RSA public keys have this XML format:

<RSAKeyValue>
  <Modulus>...</Modulus>
  <Exponent>...</Exponent>
</RSAKeyValue>

DSA public keys have this XML format:

<DSAPublicKey>
    <P>...</P>
    <Q>...</Q>
    <G>...</G>
    <Y>...</Y>
</DSAPublicKey>

ECC public keys have this XML format:

<ECCPublicKey curve="CURVE_NAME" x="HEX_DATA" y="HEX_DATA">...</ECCPublicKey>

Returns true for success, false for failure.

boolean LoadBase64(String keyStr);

Introduced in version 9.5.0.47

Loads a public key from base64-encoded DER (can be PKCS1 or PKCS8).

Returns true for success, false for failure.

boolean LoadFromBinary(CkByteData keyBytes);

Introduced in version 9.5.0.58

Loads a public key from binary DER. Auto-recognizes both PKCS1 and PKCS8 formats.

Returns true for success, false for failure.

boolean LoadFromFile(String path);

Introduced in version 9.5.0.58

Loads a public key from a file. The file can be in any string or binary format such as binary DER (PKCS1 or PKCS8), PEM, XML, or encoded binary DER (such as base64 encoded binary DER). The format of the contents of the file is auto-recognized.

Starting in version 9.5.0.66, this method also supports loading the JWK (JSON Web Key) format.

Returns true for success, false for failure.

boolean LoadFromString(String keyString);

Introduced in version 9.5.0.58

Loads a public key from any string format, such as PEM, XML, or encoded binary DER (such as base64 encoded binary DER). The format of the keyString is auto-recognized.

Starting in version 9.5.0.66, this method also supports loading the JWK (JSON Web Key) format.

Returns true for success, false for failure.

boolean LoadOpenSslDer(CkByteData data);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromBinary instead.

Loads a public key from in-memory PKCS8 DER formatted byte data.

Returns true for success, false for failure.

boolean LoadOpenSslDerFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromFile instead.

Loads a public key from an PKCS8 DER format file.

Returns true for success, false for failure.

boolean LoadOpenSslPem(String str);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromString instead.

Loads a public key from an PKCS8 PEM string.

Returns true for success, false for failure.

boolean LoadOpenSslPemFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromFile instead.

Loads a public key from an PKCS8 PEM file.

Returns true for success, false for failure.

boolean LoadPkcs1Pem(String str);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromString instead.

Loads an RSA public key from PKCS#1 PEM format.

boolean LoadRsaDer(CkByteData data);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromBinary instead.

Loads a public key from in-memory PKCS1 DER formatted byte data.

Returns true for success, false for failure.

boolean LoadRsaDerFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromFile instead.

Loads a public key from an PKCS1 DER formatted file.

Returns true for success, false for failure.

boolean LoadXml(String xml);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromString instead.

Loads a public key from an XML string.

Returns true for success, false for failure.

boolean LoadXmlFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call LoadFromFile instead.

Loads a public key from an XML file.

Returns true for success, false for failure.

boolean SaveDerFile(boolean preferPkcs1, String path);

Introduced in version 9.5.0.58

Saves the public key to a file in binary DER format. If the key type (such as RSA) supports both PKCS1 and PKCS8 formats, then preferPkcs1 determine which format is returned.

Returns true for success, false for failure.

boolean SaveLastError(String path);

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

Returns true for success, false for failure.

boolean SaveOpenSslDerFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call SaveDerFile with preference for PKCS8 instead.

Saves the public key to an PKCS8 DER format file.

Returns true for success, false for failure.

boolean SaveOpenSslPemFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call SavePemFile with preference for PKCS8 instead.

Saves the public key to an PKCS8 PEM format file.

Returns true for success, false for failure.

(Android™) Generate RSA Public/Private Key Pair and Export to PEM

(Java) Generate RSA Public/Private Key Pair and Export to PEM

boolean SavePemFile(boolean preferPkcs1, String path);

Introduced in version 9.5.0.58

Saves the public key to a file in PEM format. If the key type (such as RSA) supports both PKCS1 and PKCS8 formats, then preferPkcs1 determine which format is returned.

Returns true for success, false for failure.

(Android™) Convert RSA Private Key to Public Key

(Java) Convert RSA Private Key to Public Key

boolean SaveRsaDerFile(String path);

This method is deprecated. It will be removed in a future version.

This method is deprecated. Applications should call SaveDerFile with preference for PKCS1 instead.

Saves the public key to an PKCS1 DER format file.

Returns true for success, false for failure.

boolean SaveXmlFile(String path);

Saves the public key to an XML file.

Returns true for success, false for failure.