com.google.crypto.tink.hybrid

Class HybridKeyTemplates

java.lang.Object

com.google.crypto.tink.hybrid.HybridKeyTemplates

Deprecated.

use the key template methods in the key managers, e.g., EciesAeadHkdfPrivateKeyManager.eciesP256HkdfHmacSha256Aes128Gcm().

@Deprecated
public final class HybridKeyTemplates
extends Object

Pre-generated KeyTemplate for HybridDecrypt and HybridEncrypt primitives.

One can use these templates to generate new Keyset with KeysetHandle#generateNew. To generate a new keyset that contains a single EciesAeadHkdfPrivateKey, one can do:

 Config.register(HybridConfig.TINK_1_0_0);
 KeysetHandle handle = KeysetHandle.generateNew(
     HybridKeyTemplates.ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM);
 HybridDecrypt decrypter = handle.getPrimitive(HybridDecrypt.class);
 HybridEncrypt encrypter = handle.getPublicKeysetHandle().getPrimitive(HybridDecrypt.class);
 

Since:

1.0.0

Field Summary

Fields

Modifier and Type	Field and Description
static com.google.crypto.tink.proto.KeyTemplate	ECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256 Deprecated. 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 com.google.crypto.tink.proto.KeyTemplate	ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM Deprecated. 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 com.google.crypto.tink.proto.KeyTemplate	ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM_COMPRESSED_WITHOUT_PREFIX Deprecated. 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

Constructor Summary

Constructors

Constructor and Description
HybridKeyTemplates() Deprecated.

Method Summary

Modifier and Type	Method and Description
static com.google.crypto.tink.proto.KeyTemplate	createEciesAeadHkdfKeyTemplate(com.google.crypto.tink.proto.EllipticCurveType curve, com.google.crypto.tink.proto.HashType hashType, com.google.crypto.tink.proto.EcPointFormat ecPointFormat, com.google.crypto.tink.proto.KeyTemplate demKeyTemplate, com.google.crypto.tink.proto.OutputPrefixType outputPrefixType, byte[] salt) Deprecated.
static com.google.crypto.tink.proto.EciesAeadHkdfParams	createEciesAeadHkdfParams(com.google.crypto.tink.proto.EllipticCurveType curve, com.google.crypto.tink.proto.HashType hashType, com.google.crypto.tink.proto.EcPointFormat ecPointFormat, com.google.crypto.tink.proto.KeyTemplate demKeyTemplate, byte[] salt) Deprecated.

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 com.google.crypto.tink.proto.KeyTemplate ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM

Deprecated.

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 com.google.crypto.tink.proto.KeyTemplate ECIES_P256_HKDF_HMAC_SHA256_AES128_GCM_COMPRESSED_WITHOUT_PREFIX

Deprecated.

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 com.google.crypto.tink.proto.KeyTemplate ECIES_P256_HKDF_HMAC_SHA256_AES128_CTR_HMAC_SHA256

Deprecated.

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

Constructor Detail

HybridKeyTemplates

public HybridKeyTemplates()

Deprecated.

Method Detail

createEciesAeadHkdfKeyTemplate

public static com.google.crypto.tink.proto.KeyTemplate createEciesAeadHkdfKeyTemplate(com.google.crypto.tink.proto.EllipticCurveType curve,
                                                                                      com.google.crypto.tink.proto.HashType hashType,
                                                                                      com.google.crypto.tink.proto.EcPointFormat ecPointFormat,
                                                                                      com.google.crypto.tink.proto.KeyTemplate demKeyTemplate,
                                                                                      com.google.crypto.tink.proto.OutputPrefixType outputPrefixType,
                                                                                      byte[] salt)

Deprecated.

Returns:

a KeyTemplate containing a EciesAeadHkdfKeyFormat.

createEciesAeadHkdfParams

public static com.google.crypto.tink.proto.EciesAeadHkdfParams createEciesAeadHkdfParams(com.google.crypto.tink.proto.EllipticCurveType curve,
                                                                                         com.google.crypto.tink.proto.HashType hashType,
                                                                                         com.google.crypto.tink.proto.EcPointFormat ecPointFormat,
                                                                                         com.google.crypto.tink.proto.KeyTemplate demKeyTemplate,
                                                                                         byte[] salt)

Deprecated.

Returns:

a EciesAeadHkdfParams with the specified parameters.