com.google.crypto.tink.streamingaead

Class AesGcmHkdfStreamingParameters.Builder

java.lang.Object

com.google.crypto.tink.streamingaead.AesGcmHkdfStreamingParameters.Builder

Enclosing class:

AesGcmHkdfStreamingParameters

public static final class AesGcmHkdfStreamingParameters.Builder
extends Object

Helps creating new AesGcmHkdfStreamingParameters objects.

Constructor Summary

Constructors

Constructor and Description
Builder()

Method Summary

Modifier and Type	Method and Description
AesGcmHkdfStreamingParameters	build() Checks restrictions as on the devsite
AesGcmHkdfStreamingParameters.Builder	setCiphertextSegmentSizeBytes(int ciphertextSegmentSizeBytes) Sets the size of a segment.
AesGcmHkdfStreamingParameters.Builder	setDerivedAesGcmKeySizeBytes(int derivedAesGcmKeySizeBytes) Sets the size of the AES GCM key which will internally be derived.
AesGcmHkdfStreamingParameters.Builder	setHkdfHashType(AesGcmHkdfStreamingParameters.HashType hkdfHashType) Sets the type of the hash function used in HKDF.
AesGcmHkdfStreamingParameters.Builder	setKeySizeBytes(int keySizeBytes) Sets the size of the initial key material (used as input to HKDF).

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder()

Method Detail

setKeySizeBytes

@CanIgnoreReturnValue
public AesGcmHkdfStreamingParameters.Builder setKeySizeBytes(int keySizeBytes)

Sets the size of the initial key material (used as input to HKDF).

Must be at least 16, and at least equal to the value set in setDerivedAesGcmKeySizeBytes(int)

setDerivedAesGcmKeySizeBytes

@CanIgnoreReturnValue
public AesGcmHkdfStreamingParameters.Builder setDerivedAesGcmKeySizeBytes(int derivedAesGcmKeySizeBytes)

Sets the size of the AES GCM key which will internally be derived.

Must be 16 or 32.

setHkdfHashType

@CanIgnoreReturnValue
public AesGcmHkdfStreamingParameters.Builder setHkdfHashType(AesGcmHkdfStreamingParameters.HashType hkdfHashType)

Sets the type of the hash function used in HKDF.

setCiphertextSegmentSizeBytes

@CanIgnoreReturnValue
public AesGcmHkdfStreamingParameters.Builder setCiphertextSegmentSizeBytes(int ciphertextSegmentSizeBytes)

Sets the size of a segment.

Must be at least equal 24 plus the value set in setDerivedAesGcmKeySizeBytes(int), and less than 2^31.

build

public AesGcmHkdfStreamingParameters build()
                                    throws GeneralSecurityException

Checks restrictions as on the devsite

Throws:

GeneralSecurityException