mbedtls_nist_kw_unwrap() function

The key wrapping context to use for decryption.

The key wrapping mode to use (MBEDTLS_KW_MODE_KW or MBEDTLS_KW_MODE_KWP)

The buffer holding the input data.

The length of the input data in Bytes. The input uses units of 8 Bytes called semiblocks. The input must be a multiple of semiblocks. For KW mode: a multiple of 8 bytes between 24 and 2^57 inclusive. For KWP mode: a multiple of 8 bytes between 16 and 2^32 inclusive.

The buffer holding the output data. The output buffer's minimal length is 8 bytes shorter than \p in_len.

The number of bytes written to the output buffer. \c 0 on failure. For KWP mode, the length could be up to 15 bytes shorter than \p in_len, depending on how much padding was added to the data.

The capacity of the output buffer.

This function releases and clears the specified key wrapping context and underlying cipher sub-context.

This function encrypts a buffer using key wrapping.

This function initializes the specified key wrapping context to make references valid and prepare the context for mbedtls_nist_kw_setkey() or mbedtls_nist_kw_free().

This function initializes the key wrapping context set in the \p ctx parameter and sets the encryption key.