com.google.crypto.tink.hybrid

Class PredefinedHybridParameters

java.lang.Object

com.google.crypto.tink.hybrid.PredefinedHybridParameters

public final class PredefinedHybridParameters
extends Object

Pre-generated Parameter objects for HybridEncrypt and HybridDecrypt keys.

Note: if you want to keep dependencies small, consider inlining the constants here.

Field Summary

Fields

Modifier and Type	Field and Description
static EciesParameters	ECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256 A KeyTemplate that generates new instances of EciesAeadHkdfPrivateKey with the following parameters: KEM: ECDH over NIST P-256 DEM: AES128-CTR-HMAC-SHA256 with the following parameters AES key size: 16 bytes AES CTR IV size: 16 bytes HMAC key size: 32 bytes HMAC tag size: 16 bytes KDF: HKDF-HMAC-SHA256 with an empty salt
static EciesParameters	ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM A KeyTemplate that generates new instances of EciesAeadHkdfPrivateKey with the following parameters: KEM: ECDH over NIST P-256 DEM: AES128-GCM KDF: HKDF-HMAC-SHA256 with an empty salt
static EciesParameters	ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM_COMPRESSED_WITHOUT_PREFIX A KeyTemplate that generates new instances of EciesAeadHkdfPrivateKey with the following parameters: KEM: ECDH over NIST P-256 DEM: AES128-GCM KDF: HKDF-HMAC-SHA256 with an empty salt EC Point Format: Compressed OutputPrefixType: RAW

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM

public static final EciesParameters ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM

A KeyTemplate that generates new instances of EciesAeadHkdfPrivateKey with the following parameters:

• KEM: ECDH over NIST P-256
• DEM: AES128-GCM
• KDF: HKDF-HMAC-SHA256 with an empty salt

Unlike other key templates that use AES-GCM, the instances of HybridDecrypt generated by this key template has no limitation on Android KitKat (API level 19). They might not work in older versions though.

ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM_COMPRESSED_WITHOUT_PREFIX

public static final EciesParameters ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM_COMPRESSED_WITHOUT_PREFIX

A KeyTemplate that generates new instances of EciesAeadHkdfPrivateKey with the following parameters:

• KEM: ECDH over NIST P-256
• DEM: AES128-GCM
• KDF: HKDF-HMAC-SHA256 with an empty salt
• EC Point Format: Compressed
• OutputPrefixType: RAW

Unlike other key templates that use AES-GCM, the instances of HybridDecrypt generated by this key template has no limitation on Android KitKat (API level 19). They might not work in older versions though.

ECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256

public static final EciesParameters ECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256

A KeyTemplate that generates new instances of EciesAeadHkdfPrivateKey with the following parameters:

• KEM: ECDH over NIST P-256
• DEM: AES128-CTR-HMAC-SHA256 with the following parameters
  • AES key size: 16 bytes
  • AES CTR IV size: 16 bytes
  • HMAC key size: 32 bytes
  • HMAC tag size: 16 bytes
• KDF: HKDF-HMAC-SHA256 with an empty salt