com.google.crypto.tink.streamingaead

Class AesCtrHmacStreamingParameters.Builder

java.lang.Object

com.google.crypto.tink.streamingaead.AesCtrHmacStreamingParameters.Builder

Enclosing class:

AesCtrHmacStreamingParameters

public static final class AesCtrHmacStreamingParameters.Builder
extends Object

Helps creating new AesCtrHmacStreamingParameters objects..

Constructor Summary

Constructors

Constructor and Description
Builder()

Method Summary

Modifier and Type	Method and Description
AesCtrHmacStreamingParameters	build() Checks restrictions as on the devsite
AesCtrHmacStreamingParameters.Builder	setCiphertextSegmentSizeBytes(int ciphertextSegmentSizeBytes) Sets the size of a segment.
AesCtrHmacStreamingParameters.Builder	setDerivedKeySizeBytes(int derivedKeySizeBytes) Sets the size of the AES GCM key which will internally be derived.
AesCtrHmacStreamingParameters.Builder	setHkdfHashType(AesCtrHmacStreamingParameters.HashType hkdfHashType) Sets the type of the hash function used in HKDF.
AesCtrHmacStreamingParameters.Builder	setHmacHashType(AesCtrHmacStreamingParameters.HashType hmacHashType) Sets the type of the hash function used in the HMAC.
AesCtrHmacStreamingParameters.Builder	setHmacTagSizeBytes(Integer hmacTagSizeBytes) Sets the size of the Hmac tag used.
AesCtrHmacStreamingParameters.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 AesCtrHmacStreamingParameters.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 setDerivedKeySizeBytes(int)

setDerivedKeySizeBytes

@CanIgnoreReturnValue
public AesCtrHmacStreamingParameters.Builder setDerivedKeySizeBytes(int derivedKeySizeBytes)

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

Must be 16 or 32.

setHkdfHashType

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

Sets the type of the hash function used in HKDF.

setHmacHashType

@CanIgnoreReturnValue
public AesCtrHmacStreamingParameters.Builder setHmacHashType(AesCtrHmacStreamingParameters.HashType hmacHashType)

Sets the type of the hash function used in the HMAC.

setHmacTagSizeBytes

@CanIgnoreReturnValue
public AesCtrHmacStreamingParameters.Builder setHmacTagSizeBytes(Integer hmacTagSizeBytes)

Sets the size of the Hmac tag used.

setCiphertextSegmentSizeBytes

@CanIgnoreReturnValue
public AesCtrHmacStreamingParameters.Builder setCiphertextSegmentSizeBytes(int ciphertextSegmentSizeBytes)

Sets the size of a segment.

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

build

public AesCtrHmacStreamingParameters build()
                                    throws GeneralSecurityException

Checks restrictions as on the devsite

Throws:

GeneralSecurityException