PdfDecryptor
in package
FinalYes
Decrypts PDF objects using the Standard security handler.
Supports:
- V=1 R=2: RC4 40-bit
- V=2 R=3: RC4 variable length (40-128 bit)
- V=4 R=4: AES-128 or RC4-128 via crypt filters
- V=5 R=6: AES-256 via crypt filters
Table of Contents
Methods
- decryptObject() : Serializable
- Decrypt all string and stream values within a parsed object.
- fromEncryptDict() : self
- Build a decryptor from the trailer's /Encrypt dictionary and a password.
- fromEncryptDictPublicKey() : self
- Build a decryptor from a public-key (Adobe.PubSec) encrypt dictionary.
Methods
decryptObject()
Decrypt all string and stream values within a parsed object.
public
decryptObject(Serializable $object, int $objNum, int $genNum) : Serializable
The /Encrypt dictionary itself must NOT be decrypted.
Parameters
- $object : Serializable
- $objNum : int
- $genNum : int
Return values
SerializablefromEncryptDict()
Build a decryptor from the trailer's /Encrypt dictionary and a password.
public
static fromEncryptDict(PdfDictionary $encryptDict, string $password, string $fileId) : self
Tries the password as the user password first, then as the owner password.
Parameters
- $encryptDict : PdfDictionary
- $password : string
- $fileId : string
Tags
Return values
selffromEncryptDictPublicKey()
Build a decryptor from a public-key (Adobe.PubSec) encrypt dictionary.
public
static fromEncryptDictPublicKey(PdfDictionary $encryptDict, string $certPem, string $privateKeyPem, string $fileId) : self
Extracts the PKCS#7 envelopes from the crypt filter's /Recipients, decrypts the seed using the provided certificate and private key, then derives the file encryption key.
Parameters
- $encryptDict : PdfDictionary
- $certPem : string
- $privateKeyPem : string
- $fileId : string