diff options
Diffstat (limited to 'src/core/crypto')
| -rw-r--r-- | src/core/crypto/aes_util.cpp | 14 | ||||
| -rw-r--r-- | src/core/crypto/ctr_encryption_layer.cpp | 2 |
2 files changed, 15 insertions, 1 deletions
diff --git a/src/core/crypto/aes_util.cpp b/src/core/crypto/aes_util.cpp index 72e4bed67..89ade5000 100644 --- a/src/core/crypto/aes_util.cpp +++ b/src/core/crypto/aes_util.cpp @@ -82,11 +82,25 @@ void AESCipher<Key, KeySize>::Transcode(const u8* src, size_t size, u8* dest, Op } } else { const auto block_size = mbedtls_cipher_get_block_size(context); + if (size < block_size) { + std::vector<u8> block(block_size); + std::memcpy(block.data(), src, size); + Transcode(block.data(), block.size(), block.data(), op); + std::memcpy(dest, block.data(), size); + return; + } for (size_t offset = 0; offset < size; offset += block_size) { auto length = std::min<size_t>(block_size, size - offset); mbedtls_cipher_update(context, src + offset, length, dest + offset, &written); if (written != length) { + if (length < block_size) { + std::vector<u8> block(block_size); + std::memcpy(block.data(), src + offset, length); + Transcode(block.data(), block.size(), block.data(), op); + std::memcpy(dest + offset, block.data(), length); + return; + } LOG_WARNING(Crypto, "Not all data was decrypted requested={:016X}, actual={:016X}.", length, written); } diff --git a/src/core/crypto/ctr_encryption_layer.cpp b/src/core/crypto/ctr_encryption_layer.cpp index 3ea60dbd0..296fad419 100644 --- a/src/core/crypto/ctr_encryption_layer.cpp +++ b/src/core/crypto/ctr_encryption_layer.cpp @@ -21,7 +21,7 @@ size_t CTREncryptionLayer::Read(u8* data, size_t length, size_t offset) const { UpdateIV(base_offset + offset); std::vector<u8> raw = base->ReadBytes(length, offset); cipher.Transcode(raw.data(), raw.size(), data, Op::Decrypt); - return raw.size(); + return length; } // offset does not fall on block boundary (0x10) |