soutade/libgourou
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Make Encryption/Decryption method of DRMProcessorClient generic

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This commit is contained in:
Grégory Soutadé
2021-12-18 17:37:37 +01:00
parent a751327dab
commit 19aacf98a2
3 changed files with 167 additions and 132 deletions
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85
include/drmprocessorclient.h
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@@ -35,7 +35,7 @@ namespace gourou
{
public:
/**
* @brief Create a digest handler (for now only SHA1 is used)
* @brief Create a digest handler
*
* @param digestName Digest name to instanciate
*/
@@ -212,14 +212,20 @@ namespace gourou
class CryptoInterface
{
public:
enum CRYPTO_ALGO {
ALGO_AES=0,
ALGO_RC4
};
enum CHAINING_MODE {
CHAIN_ECB=0,
CHAIN_CBC
};
/**
* @brief Do AES encryption. If length of data is not multiple of 16, PKCS#5 padding is done
* @brief Do encryption. If length of data is not multiple of block size, PKCS#5 padding is done
*
* @param algo Algorithm to use
* @param chaining Chaining mode
* @param key AES key
* @param keyLength AES key length
@@ -230,52 +236,53 @@ namespace gourou
* @param dataOut Encrypted data
* @param dataOutLength Length of encrypted data
*/
virtual void AESEncrypt(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength,
const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
virtual void Encrypt(CRYPTO_ALGO algo, CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength,
const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
/**
* @brief Init AES CBC encryption
* @brief Init encryption
*
* @param chaining Chaining mode
* @param key AES key
* @param keyLength AES key length
* @param iv IV key
* @param ivLength IV key length
* @param key Key
* @param keyLength Key length
* @param iv Optional IV key
* @param ivLength Optional IV key length
*
* @return AES handler
*/
virtual void* AESEncryptInit(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv=0, unsigned int ivLength=0) = 0;
virtual void* EncryptInit(CRYPTO_ALGO algo, CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv=0, unsigned int ivLength=0) = 0;
/**
* @brief Encrypt data
*
* @param handler AES handler
* @param handler Crypto handler
* @param dataIn Data to encrypt
* @param dataInLength Data length
* @param dataOut Encrypted data
* @param dataOutLength Length of encrypted data
*/
virtual void AESEncryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
virtual void EncryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
/**
* @brief Finalize AES encryption (pad and encrypt last block if needed)
* @brief Finalizeencryption (pad and encrypt last block if needed)
* Destroy handler at the end
*
* @param handler AES handler
* @param handler Crypto handler
* @param dataOut Last block of encrypted data
* @param dataOutLength Length of encrypted data
*/
virtual void AESEncryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength) = 0;
virtual void EncryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength) = 0;
/**
* @brief Do AES decryption. If length of data is not multiple of 16, PKCS#5 padding is done
* @brief Do decryption. If length of data is not multiple of block size, PKCS#5 padding is done
*
* @param algo Algorithm to use
* @param chaining Chaining mode
* @param key AES key
* @param keyLength AES key length
@@ -286,47 +293,47 @@ namespace gourou
* @param dataOut Encrypted data
* @param dataOutLength Length of encrypted data
*/
virtual void AESDecrypt(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength,
const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
virtual void Decrypt(CRYPTO_ALGO algo, CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength,
const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
/**
* @brief Init AES decryption
* @brief Init decryption
*
* @param chaining Chaining mode
* @param key AES key
* @param keyLength AES key length
* @param key Key
* @param keyLength Key length
* @param iv IV key
* @param ivLength IV key length
*
* @return AES handler
*/
virtual void* AESDecryptInit(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv=0, unsigned int ivLength=0) = 0;
virtual void* DecryptInit(CRYPTO_ALGO algo, CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv=0, unsigned int ivLength=0) = 0;
/**
* @brief Decrypt data
*
* @param handler AES handler
* @param handler Crypto handler
* @param dataIn Data to decrypt
* @param dataInLength Data length
* @param dataOut Decrypted data
* @param dataOutLength Length of decrypted data
*/
virtual void AESDecryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
virtual void DecryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength) = 0;
/**
* @brief Finalize AES decryption (decrypt last block and remove padding if it is set).
* @brief Finalize decryption (decrypt last block and remove padding if it is set).
* Destroy handler at the end
*
* @param handler AES handler
* @param handler Crypto handler
* @param dataOut Last block decrypted data
* @param dataOutLength Length of decrypted data
*/
virtual void AESDecryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength) = 0;
virtual void DecryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength) = 0;
};