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31 #include "modules/crypto/Crypto.h"
33 #include "bindings/core/v8/ExceptionState.h"
34 #include "core/dom/ExceptionCode.h"
35 #include "wtf/ArrayBufferView.h"
36 #include "wtf/CryptographicallyRandomNumber.h"
42 bool isIntegerArray(ArrayBufferView* array)
44 ArrayBufferView::ViewType type = array->type();
45 return type == ArrayBufferView::TypeInt8
46 || type == ArrayBufferView::TypeUint8
47 || type == ArrayBufferView::TypeUint8Clamped
48 || type == ArrayBufferView::TypeInt16
49 || type == ArrayBufferView::TypeUint16
50 || type == ArrayBufferView::TypeInt32
51 || type == ArrayBufferView::TypeUint32;
58 ScriptWrappable::init(this);
61 void Crypto::getRandomValues(ArrayBufferView* array, ExceptionState& exceptionState)
64 exceptionState.throwDOMException(TypeMismatchError, "The provided ArrayBufferView is null.");
67 if (!isIntegerArray(array)) {
68 exceptionState.throwDOMException(TypeMismatchError, String::format("The provided ArrayBufferView is of type '%s', which is not an integer array type.", array->typeName()));
71 if (array->byteLength() > 65536) {
72 exceptionState.throwDOMException(QuotaExceededError, String::format("The ArrayBufferView's byte length (%u) exceeds the number of bytes of entropy available via this API (65536).", array->byteLength()));
75 cryptographicallyRandomValues(array->baseAddress(), array->byteLength());
78 SubtleCrypto* Crypto::subtle()
81 m_subtleCrypto = SubtleCrypto::create();
82 return m_subtleCrypto.get();
85 void Crypto::trace(Visitor* visitor)
87 visitor->trace(m_subtleCrypto);