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CryptoKey - Web APIs | MDN
CryptoKey.typeRead only
The type of key the object represents. It may take one of the following values: "secret", "private" or "public".
A boolean value indicating whether or not the key may be extracted using SubtleCrypto.exportKey()SubtleCrypto.wrapKey()
CryptoKey.algorithmRead only
An object describing the algorithm for which this key can be used and any associated extra parameters.
CryptoKey.usagesRead only
An Array"encrypt", "decrypt", "sign", "verify", "deriveKey", "deriveBits", "wrapKey", and "unwrapKey".
The examples for SubtleCrypto methods often use CryptoKey objects. For example:
