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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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172
utils/drmprocessorclientimpl.cpp
View File

@@ -47,23 +47,28 @@
/* Digest interface */
void* DRMProcessorClientImpl::createDigest(const std::string& digestName)
{
EVP_MD_CTX *sha_ctx = EVP_MD_CTX_new();
EVP_MD_CTX *md_ctx = EVP_MD_CTX_new();
const EVP_MD* md = EVP_get_digestbyname(digestName.c_str());
EVP_DigestInit(sha_ctx, md);
return sha_ctx;
if (EVP_DigestInit(md_ctx, md) != 1)
{
EVP_MD_CTX_free(md_ctx);
return 0;
}
return md_ctx;
}
int DRMProcessorClientImpl::digestUpdate(void* handler, unsigned char* data, unsigned int length)
{
return EVP_DigestUpdate((EVP_MD_CTX *)handler, data, length);
return (EVP_DigestUpdate((EVP_MD_CTX *)handler, data, length)) ? 0 : -1;
}
int DRMProcessorClientImpl::digestFinalize(void* handler, unsigned char* digestOut)
{
int res = EVP_DigestFinal((EVP_MD_CTX *)handler, digestOut, NULL);
EVP_MD_CTX_free((EVP_MD_CTX *)handler);
return res;
return (res == 1) ? 0 : -1;
}
int DRMProcessorClientImpl::digest(const std::string& digestName, unsigned char* data, unsigned int length, unsigned char* digestOut)
@@ -283,83 +288,106 @@ void DRMProcessorClientImpl::extractCertificate(const unsigned char* RSAKey, uns
}
/* Crypto interface */
void DRMProcessorClientImpl::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)
void DRMProcessorClientImpl::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)
{
void* handler = AESEncryptInit(chaining, key, keyLength, iv, ivLength);
AESEncryptUpdate(handler, dataIn, dataInLength, dataOut, dataOutLength);
AESEncryptFinalize(handler, dataOut+*dataOutLength, dataOutLength);
void* handler = EncryptInit(algo, chaining, key, keyLength, iv, ivLength);
EncryptUpdate(handler, dataIn, dataInLength, dataOut, dataOutLength);
EncryptFinalize(handler, dataOut+*dataOutLength, dataOutLength);
}
void* DRMProcessorClientImpl::AESEncryptInit(CHAINING_MODE chaining,
void* DRMProcessorClientImpl::EncryptInit(CRYPTO_ALGO algo, CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength)
{
EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
if (algo == ALGO_AES)
{
switch(keyLength)
{
case 16:
switch(chaining)
{
case CHAIN_ECB:
EVP_EncryptInit(ctx, EVP_aes_128_ecb(), key, iv);
break;
case CHAIN_CBC:
EVP_EncryptInit(ctx, EVP_aes_128_cbc(), key, iv);
break;
default:
EXCEPTION(gourou::CLIENT_BAD_CHAINING, "Unknown chaining mode " << chaining);
}
break;
default:
EVP_CIPHER_CTX_free(ctx);
EXCEPTION(gourou::CLIENT_BAD_KEY_SIZE, "Invalid key size " << keyLength);
}
}
else if (algo == ALGO_RC4)
{
if (keyLength != 16)
{
EVP_CIPHER_CTX_free(ctx);
EXCEPTION(gourou::CLIENT_BAD_KEY_SIZE, "Invalid key size " << keyLength);
}
EVP_DecryptInit(ctx, EVP_rc4(), key, iv);
}
return ctx;
}
void* DRMProcessorClientImpl::DecryptInit(CRYPTO_ALGO algo, CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength)
{
EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
switch(keyLength)
if (algo == ALGO_AES)
{
case 16:
switch(chaining)
switch(keyLength)
{
case CHAIN_ECB:
EVP_EncryptInit_ex(ctx, EVP_aes_128_ecb(), NULL, key, iv);
break;
case CHAIN_CBC:
EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv);
case 16:
switch(chaining)
{
case CHAIN_ECB:
EVP_DecryptInit(ctx, EVP_aes_128_ecb(), key, iv);
break;
case CHAIN_CBC:
EVP_DecryptInit(ctx, EVP_aes_128_cbc(), key, iv);
break;
default:
EXCEPTION(gourou::CLIENT_BAD_CHAINING, "Unknown chaining mode " << chaining);
}
break;
default:
EXCEPTION(gourou::CLIENT_BAD_CHAINING, "Unknown chaining mode " << chaining);
EVP_CIPHER_CTX_free(ctx);
EXCEPTION(gourou::CLIENT_BAD_KEY_SIZE, "Invalid key size " << keyLength);
}
break;
default:
EVP_CIPHER_CTX_free(ctx);
EXCEPTION(gourou::CLIENT_BAD_KEY_SIZE, "Invalid key size " << keyLength);
}
else if (algo == ALGO_RC4)
{
if (keyLength != 16)
{
EVP_CIPHER_CTX_free(ctx);
EXCEPTION(gourou::CLIENT_BAD_KEY_SIZE, "Invalid key size " << keyLength);
}
EVP_DecryptInit(ctx, EVP_rc4(), key, iv);
}
return ctx;
}
void* DRMProcessorClientImpl::AESDecryptInit(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv, unsigned int ivLength)
{
EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
switch(keyLength)
{
case 16:
switch(chaining)
{
case CHAIN_ECB:
EVP_DecryptInit_ex(ctx, EVP_aes_128_ecb(), NULL, key, iv);
break;
case CHAIN_CBC:
EVP_DecryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv);
break;
default:
EXCEPTION(gourou::CLIENT_BAD_CHAINING, "Unknown chaining mode " << chaining);
}
break;
default:
EVP_CIPHER_CTX_free(ctx);
EXCEPTION(gourou::CLIENT_BAD_KEY_SIZE, "Invalid key size " << keyLength);
}
return ctx;
}
void DRMProcessorClientImpl::AESEncryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength)
void DRMProcessorClientImpl::EncryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength)
{
EVP_EncryptUpdate((EVP_CIPHER_CTX*)handler, dataOut, (int*)dataOutLength, dataIn, dataInLength);
}
void DRMProcessorClientImpl::AESEncryptFinalize(void* handler,
unsigned char* dataOut, unsigned int* dataOutLength)
void DRMProcessorClientImpl::EncryptFinalize(void* handler,
unsigned char* dataOut, unsigned int* dataOutLength)
{
int len;
EVP_EncryptFinal_ex((EVP_CIPHER_CTX*)handler, dataOut, &len);
@@ -367,24 +395,24 @@ void DRMProcessorClientImpl::AESEncryptFinalize(void* handler,
EVP_CIPHER_CTX_free((EVP_CIPHER_CTX*)handler);
}
void DRMProcessorClientImpl::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)
void DRMProcessorClientImpl::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)
{
void* handler = AESDecryptInit(chaining, key, keyLength, iv, ivLength);
AESDecryptUpdate(handler, dataIn, dataInLength, dataOut, dataOutLength);
AESDecryptFinalize(handler, dataOut+*dataOutLength, dataOutLength);
void* handler = DecryptInit(algo, chaining, key, keyLength, iv, ivLength);
DecryptUpdate(handler, dataIn, dataInLength, dataOut, dataOutLength);
DecryptFinalize(handler, dataOut+*dataOutLength, dataOutLength);
}
void DRMProcessorClientImpl::AESDecryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength)
void DRMProcessorClientImpl::DecryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength)
{
EVP_DecryptUpdate((EVP_CIPHER_CTX*)handler, dataOut, (int*)dataOutLength, dataIn, dataInLength);
}
void DRMProcessorClientImpl::AESDecryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength)
void DRMProcessorClientImpl::DecryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength)
{
int len;
EVP_DecryptFinal_ex((EVP_CIPHER_CTX*)handler, dataOut, &len);

42
utils/drmprocessorclientimpl.h
View File

@@ -73,34 +73,34 @@ public:
unsigned char** certOut, unsigned int* certOutLength);
/* Crypto interface */
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);
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);
virtual void* AESEncryptInit(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv=0, unsigned int ivLength=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);
virtual void AESEncryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
virtual void EncryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength);
virtual void AESEncryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength);
virtual void EncryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength);
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);
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);
virtual void* AESDecryptInit(CHAINING_MODE chaining,
const unsigned char* key, unsigned int keyLength,
const unsigned char* iv=0, unsigned int ivLength=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);
virtual void AESDecryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength);
virtual void AESDecryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength);
virtual void DecryptUpdate(void* handler, const unsigned char* dataIn, unsigned int dataInLength,
unsigned char* dataOut, unsigned int* dataOutLength);
virtual void DecryptFinalize(void* handler, unsigned char* dataOut, unsigned int* dataOutLength);
/* ZIP Interface */
virtual void* zipOpen(const std::string& path);