Checksum
public
final
class
Checksum
extends Object
implements
Parcelable
java.lang.Object | |
↳ | android.content.pm.Checksum |
A typed checksum.
See also:
Summary
Constants | |
---|---|
int |
TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256
Root SHA256 hash of a 1M Merkle tree computed over protected content. |
int |
TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512
Root SHA512 hash of a 1M Merkle tree computed over protected content. |
int |
TYPE_WHOLE_MD5
This constant was deprecated
in API level 31.
Not platform enforced. Cryptographically broken and unsuitable for further use.
Use platform enforced digests e.g. |
int |
TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
Root SHA256 hash of a 4K Merkle tree computed over all file bytes. |
int |
TYPE_WHOLE_SHA1
This constant was deprecated
in API level 31.
Not platform enforced. Broken and should not be used.
Use platform enforced digests e.g. |
int |
TYPE_WHOLE_SHA256
This constant was deprecated
in API level 31.
Not platform enforced.
Use platform enforced digests e.g. |
int |
TYPE_WHOLE_SHA512
This constant was deprecated
in API level 31.
Not platform enforced.
Use platform enforced digests e.g. |
Inherited constants |
---|
Fields | |
---|---|
public
static
final
Creator<Checksum> |
CREATOR
|
Public constructors | |
---|---|
Checksum(int type, byte[] value)
Creates a new Checksum. |
Public methods | |
---|---|
int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
int
|
getType()
Checksum type. |
byte[]
|
getValue()
Checksum value. |
void
|
writeToParcel(Parcel dest, int flags)
Flatten this object in to a Parcel. |
Inherited methods | |
---|---|
Constants
TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256
public static final int TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256
Root SHA256 hash of a 1M Merkle tree computed over protected content. Excludes signing block. See APK Signature Scheme V2.
Constant Value: 32 (0x00000020)
TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512
public static final int TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512
Root SHA512 hash of a 1M Merkle tree computed over protected content. Excludes signing block. See APK Signature Scheme V2.
Constant Value: 64 (0x00000040)
TYPE_WHOLE_MD5
public static final int TYPE_WHOLE_MD5
This constant was deprecated
in API level 31.
Not platform enforced. Cryptographically broken and unsuitable for further use.
Use platform enforced digests e.g. TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
.
Provided for completeness' sake and to support legacy usecases.
MD5 hash computed over all file bytes.
Constant Value: 2 (0x00000002)
TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
public static final int TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
Root SHA256 hash of a 4K Merkle tree computed over all file bytes. See APK Signature Scheme V4. See fs-verity. Recommended for all new applications. Can be used by kernel to enforce authenticity and integrity of the APK. See fs-verity for details
Constant Value: 1 (0x00000001)
TYPE_WHOLE_SHA1
public static final int TYPE_WHOLE_SHA1
This constant was deprecated
in API level 31.
Not platform enforced. Broken and should not be used.
Use platform enforced digests e.g. TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
.
Provided for completeness' sake and to support legacy usecases.
SHA1 hash computed over all file bytes.
Constant Value: 4 (0x00000004)
TYPE_WHOLE_SHA256
public static final int TYPE_WHOLE_SHA256
This constant was deprecated
in API level 31.
Not platform enforced.
Use platform enforced digests e.g. TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
.
Provided for completeness' sake and to support legacy usecases.
SHA256 hash computed over all file bytes.
Constant Value: 8 (0x00000008)
TYPE_WHOLE_SHA512
public static final int TYPE_WHOLE_SHA512
This constant was deprecated
in API level 31.
Not platform enforced.
Use platform enforced digests e.g. TYPE_WHOLE_MERKLE_ROOT_4K_SHA256
.
Provided for completeness' sake and to support legacy usecases.
SHA512 hash computed over all file bytes.
Constant Value: 16 (0x00000010)
Fields
Public constructors
Checksum
public Checksum (int type, byte[] value)
Creates a new Checksum.
Parameters | |
---|---|
type |
int : Checksum type.
Value is TYPE_WHOLE_MERKLE_ROOT_4K_SHA256 , TYPE_WHOLE_MD5 , TYPE_WHOLE_SHA1 , TYPE_WHOLE_SHA256 , TYPE_WHOLE_SHA512 , TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256 , or TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512 |
value |
byte : Checksum value.
This value cannot be null . |
Public methods
describeContents
public int describeContents ()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of writeToParcel(android.os.Parcel, int)
,
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR
bit.
Returns | |
---|---|
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
getType
public int getType ()
Checksum type.
Returns | |
---|---|
int |
Value is TYPE_WHOLE_MERKLE_ROOT_4K_SHA256 , TYPE_WHOLE_MD5 , TYPE_WHOLE_SHA1 , TYPE_WHOLE_SHA256 , TYPE_WHOLE_SHA512 , TYPE_PARTIAL_MERKLE_ROOT_1M_SHA256 , or TYPE_PARTIAL_MERKLE_ROOT_1M_SHA512 |
getValue
public byte[] getValue ()
Checksum value.
Returns | |
---|---|
byte[] |
This value cannot be null . |
writeToParcel
public void writeToParcel (Parcel dest, int flags)
Flatten this object in to a Parcel.
Parameters | |
---|---|
dest |
Parcel : This value cannot be null . |
flags |
int : Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE .
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE , and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |