fix wrong buffer conversion for Uint8Array
If the BufferSource is already an Uint8Array which is a view of a subset of the underlying ArrayBuffer then accessing .buffer caused the whole backing buffer to be returned. Fix this by just returning the original Uint8Array as-is.
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@ -17,8 +17,10 @@ export class Fido2Utils {
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return Fido2Utils.fromB64ToArray(Fido2Utils.fromUrlB64ToB64(str));
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return Fido2Utils.fromB64ToArray(Fido2Utils.fromUrlB64ToB64(str));
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}
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}
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static bufferSourceToUint8Array(bufferSource: BufferSource) {
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static bufferSourceToUint8Array(bufferSource: BufferSource): Uint8Array {
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if (Fido2Utils.isArrayBuffer(bufferSource)) {
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if (bufferSource instanceof Uint8Array) {
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return bufferSource;
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} else if (Fido2Utils.isArrayBuffer(bufferSource)) {
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return new Uint8Array(bufferSource);
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return new Uint8Array(bufferSource);
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} else {
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} else {
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return new Uint8Array(bufferSource.buffer);
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return new Uint8Array(bufferSource.buffer);
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