Interface EncryptionContext

The encryption context interface for a recipient and a sender.

interface EncryptionContext {
    export(exporterContext: ArrayBuffer, len: number): Promise<ArrayBuffer>;
    open(data: ArrayBuffer, aad?: ArrayBuffer): Promise<ArrayBuffer>;
    seal(data: ArrayBuffer, aad?: ArrayBuffer): Promise<ArrayBuffer>;
}

Hierarchy (view full)

Methods

export open seal

Methods

export

  • export(exporterContext, len): Promise<ArrayBuffer>

  • Exports a secret using a variable-length pseudorandom function.

    If the error occurred, throws ExportError.

    Parameters

    • exporterContext: ArrayBuffer

      An exporter context string as bytes. The maximum length is 128 bytes.

    • len: number

      A desired length in bytes of the output secret.

    Returns Promise<ArrayBuffer>

    A secret string as bytes.

    Throws

    ExportError

open

  • open(data, aad?): Promise<ArrayBuffer>

  • Decrypts data.

    If the error occurred, throws OpenError.

    Parameters

    • data: ArrayBuffer

      An encrypted text as bytes to be decrypted.

    • Optionalaad: ArrayBuffer

      Additional authenticated data as bytes fed by an application.

    Returns Promise<ArrayBuffer>

    A decrypted plain text as bytes.

    Throws

    OpenError

seal

  • seal(data, aad?): Promise<ArrayBuffer>

  • Encrypts data.

    If the error occurred, throws SealError | MessageLimitReachedError.

    Parameters

    • data: ArrayBuffer

      A plain text as bytes to be encrypted.

    • Optionalaad: ArrayBuffer

      Additional authenticated data as bytes fed by an application.

    Returns Promise<ArrayBuffer>

    A cipher text as bytes.

    Throws

    MessageLimitReachedError, SealError

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