Package com.aowagie.text.pdf
Class PdfEncryption
java.lang.Object
com.aowagie.text.pdf.PdfEncryption
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate static final int
private final ARCFOUREncryption
private int
private byte[]
private boolean
Indicates if the encryption is only necessary for embedded files.private boolean
private final byte[]
Work area to prepare the object/generation bytesprivate byte[]
The encryption key for a particular object/generationprivate int
The generic key length.private int
The encryption key length for a particular object/generationprivate MessageDigest
The message digest algorithm MD5private static final byte[]
private byte[]
The global encryption keyprivate byte[]
The encryption key for the ownerprivate static final byte[]
private int
private PdfPublicKeySecurityHandler
The public key security handler for certificate encryptionprivate int
private static final byte[]
private static long
private static final int
private static final int
(package private) byte[]
The encryption key for the user -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
addRecipient
(Certificate cert, int permission) (package private) int
calculateStreamSize
(int n) private byte[]
computeOwnerKey
(byte[] userPad, byte[] ownerPad) static byte[]
static PdfObject
createInfoId
(byte[] id) byte[]
decryptByteArray
(byte[] b) (package private) byte[]
encryptByteArray
(byte[] b) int
boolean
Indicates if only the embedded files have to be encrypted.boolean
private byte[]
padPassword
(byte[] userPassword) void
setCryptoMode
(int mode, int kl) void
setHashKey
(int number, int generation) void
setupAllKeys
(byte[] userPassword, byte[] ownerPassword, int permissions) void
setupByEncryptionKey
(byte[] key, int keylength) private void
setupByOwnerPad
(byte[] documentID, byte[] ownerPad, byte[] userKey, byte[] ownerKey, int permissions) void
setupByOwnerPassword
(byte[] documentID, byte[] ownerPassword, byte[] userKey, byte[] ownerKey, int permissions) private void
setupByUserPad
(byte[] documentID, byte[] userPad, byte[] ownerKey, int permissions) void
setupByUserPassword
(byte[] documentID, byte[] userPassword, byte[] ownerKey, int permissions) private void
setupGlobalEncryptionKey
(byte[] documentID, byte[] userPad, byte[] ownerKey, int permissions) ownerKey, documentID must be setupprivate void
mkey must be setup
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Field Details
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STANDARD_ENCRYPTION_40
private static final int STANDARD_ENCRYPTION_40- See Also:
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STANDARD_ENCRYPTION_128
private static final int STANDARD_ENCRYPTION_128- See Also:
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AES_128
private static final int AES_128- See Also:
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pad
private static final byte[] pad -
salt
private static final byte[] salt -
metadataPad
private static final byte[] metadataPad -
key
private byte[] keyThe encryption key for a particular object/generation -
keySize
private int keySizeThe encryption key length for a particular object/generation -
mkey
private byte[] mkeyThe global encryption key -
extra
private final byte[] extraWork area to prepare the object/generation bytes -
md5
The message digest algorithm MD5 -
ownerKey
private byte[] ownerKeyThe encryption key for the owner -
userKey
byte[] userKeyThe encryption key for the user -
publicKeyHandler
The public key security handler for certificate encryption -
permissions
private int permissions -
documentID
private byte[] documentID -
seq
private static long seq -
revision
private int revision -
arcfour
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keyLength
private int keyLengthThe generic key length. It may be 40 or 128. -
encryptMetadata
private boolean encryptMetadata -
embeddedFilesOnly
private boolean embeddedFilesOnlyIndicates if the encryption is only necessary for embedded files.- Since:
- 2.1.3
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cryptoMode
private int cryptoMode
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Constructor Details
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PdfEncryption
public PdfEncryption() -
PdfEncryption
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Method Details
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setCryptoMode
public void setCryptoMode(int mode, int kl) -
getCryptoMode
public int getCryptoMode() -
isMetadataEncrypted
public boolean isMetadataEncrypted() -
isEmbeddedFilesOnly
public boolean isEmbeddedFilesOnly()Indicates if only the embedded files have to be encrypted.- Returns:
- if true only the embedded files will be encrypted
- Since:
- 2.1.3
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padPassword
private byte[] padPassword(byte[] userPassword) -
computeOwnerKey
private byte[] computeOwnerKey(byte[] userPad, byte[] ownerPad) -
setupGlobalEncryptionKey
private void setupGlobalEncryptionKey(byte[] documentID, byte[] userPad, byte[] ownerKey, int permissions) ownerKey, documentID must be setup -
setupUserKey
private void setupUserKey()mkey must be setup -
setupAllKeys
public void setupAllKeys(byte[] userPassword, byte[] ownerPassword, int permissions) -
createDocumentId
public static byte[] createDocumentId() -
setupByUserPassword
public void setupByUserPassword(byte[] documentID, byte[] userPassword, byte[] ownerKey, int permissions) -
setupByUserPad
private void setupByUserPad(byte[] documentID, byte[] userPad, byte[] ownerKey, int permissions) -
setupByOwnerPassword
public void setupByOwnerPassword(byte[] documentID, byte[] ownerPassword, byte[] userKey, byte[] ownerKey, int permissions) -
setupByOwnerPad
private void setupByOwnerPad(byte[] documentID, byte[] ownerPad, byte[] userKey, byte[] ownerKey, int permissions) -
setupByEncryptionKey
public void setupByEncryptionKey(byte[] key, int keylength) -
setHashKey
public void setHashKey(int number, int generation) -
createInfoId
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getEncryptionDictionary
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getFileID
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getEncryptionStream
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calculateStreamSize
int calculateStreamSize(int n) -
encryptByteArray
byte[] encryptByteArray(byte[] b) -
getDecryptor
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decryptByteArray
public byte[] decryptByteArray(byte[] b) -
addRecipient
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