A key specification is a transparent representation of the key material that constitutes a key. A key may be specified in an algorithm-specific way, or in an algorithm-independent encoding format (such as ASN.1). This package contains key specifications for Diffie-Hellman public and private keys, as well as key specifications for DES, Triple DES, and PBE secret keys.
An algorithm parameter specification is a transparent representation of the sets of parameters used with an algorithm. This package contains algorithm parameter specifications for parameters used with the Diffie-Hellman, DES, Triple DES, PBE, RC2 and RC5 algorithms.
| Class | Description |
|---|---|
| ChaCha20ParameterSpec | This class specifies the parameters used with the ChaCha20 algorithm. |
| DESedeKeySpec | This class specifies a DES-EDE ("triple-DES") key. |
| DESKeySpec | This class specifies a DES key. |
| DHGenParameterSpec | This class specifies the set of parameters used for generating Diffie-Hellman (system) parameters for use in Diffie-Hellman key agreement. |
| DHParameterSpec | This class specifies the set of parameters used with the Diffie-Hellman algorithm, as specified in PKCS #3: Diffie-Hellman Key-Agreement Standard. |
| DHPrivateKeySpec | This class specifies a Diffie-Hellman private key with its associated parameters. |
| DHPublicKeySpec | This class specifies a Diffie-Hellman public key with its associated parameters. |
| GCMParameterSpec | Specifies the set of parameters required by a Cipher using the Galois/Counter Mode (GCM) mode. |
| IvParameterSpec | This class specifies an initialization vector (IV). |
| OAEPParameterSpec | This class specifies the set of parameters used with OAEP Padding, as defined in the PKCS#1 v2.2 standard. |
| PBEKeySpec | A user-chosen password that can be used with password-based encryption (PBE). |
| PBEParameterSpec | This class specifies the set of parameters used with password-based encryption (PBE), as defined in the PKCS #5 standard. |
| PSource | This class specifies the source for encoding input P in OAEP Padding, as defined in the PKCS#1 v2.2 standard. |
| PSource.PSpecified | This class is used to explicitly specify the value for encoding input P in OAEP Padding. |
| RC2ParameterSpec | This class specifies the parameters used with the RC2 algorithm. |
| RC5ParameterSpec | This class specifies the parameters used with the RC5 algorithm. |
| SecretKeySpec | This class specifies a secret key in a provider-independent fashion. |
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/javax/crypto/spec/package-summary.html