com.google.crypto.tink.prf

Class PrfKeyTemplates

java.lang.Object

com.google.crypto.tink.prf.PrfKeyTemplates

public final class PrfKeyTemplates
extends Object

Key templates for PRF-Keys.

We recommend to avoid this class in order to keep dependencies small.

• Using this class adds a dependency on protobuf. We hope that eventually it is possible to use Tink without a dependency on protobuf.
• Using this class adds a dependency on classes for all involved key types.

These dependencies all come from static class member variables, which are initialized when the class is loaded. This implies that static analysis and code minimization tools (such as proguard) cannot remove the usages either.

Instead, we recommend to use KeysetHandle.generateEntryFromParametersName or KeysetHandle.generateEntryFromParameters.

Field Summary

Fields

Modifier and Type	Field and Description
static KeyTemplate	AES_CMAC_PRF
static KeyTemplate	HKDF_SHA256 Generates a KeyTemplate for a HkdfPrfKey key with the following parameters.
static KeyTemplate	HMAC_SHA256_PRF
static KeyTemplate	HMAC_SHA512_PRF

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HKDF_SHA256

public static final KeyTemplate HKDF_SHA256

Generates a KeyTemplate for a HkdfPrfKey key with the following parameters.

• Hash function: SHA256
• HMAC key size: 32 bytes
• Salt: empty

HMAC_SHA256_PRF

public static final KeyTemplate HMAC_SHA256_PRF

HMAC_SHA512_PRF

public static final KeyTemplate HMAC_SHA512_PRF

AES_CMAC_PRF

public static final KeyTemplate AES_CMAC_PRF