AES-CBC with Padding

[JeanMBoones]

I am trying to configure the CryptoCell on an NRF52840 to use AES-CBC encryption with PKCS7 padding. When I call the following function, it returns SASI_AES_ILLEGAL_PADDING_TYPE_ERROR:

SaSiAesUserContext_t ctx;

SaSiError_t err = SaSi_AesInit(&ctx,
	SASI_AES_ENCRYPT,
	SASI_AES_MODE_CBC,
	SASI_AES_PADDING_PKCS7);

Is Padding supported for AES-CBC. From the documentation it appears that it should be supported.

I am using Nordic nRF.SDK.14.2.0_17b948a on an nRF52840-Preview-DK development kit.

[jakub]

Hi, This library does not support padding. Documentation is not reflecting reality :(

[DamianV]

Hi,

while working on a project, I attempted to use CBC with PKCS7 padding, using the SDK nRF5_SDK_15.3.0_59ac345 and I am still getting SASI_AES_ILLEGAL_PADDING_TYPE_ERROR.

Is the padding method still not supported (which is not evident from the documentation)?