[gnutls-devel] GnuTLS | crypto-api: add block cipher API with automatic padding (!1611)

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Daiki Ueno commented on a discussion on lib/crypto-api.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1611#note_1034888441

> +
> +	if (_gnutls_cipher_type(h->ctx_enc.e) != CIPHER_BLOCK) {
> +		ret = _gnutls_cipher_decrypt2(&h->ctx_enc,
> +					      ctext, ctext_len,
> +					      ptext, *ptext_len);
> +	} else {
> +		ret = _gnutls_cipher_decrypt2(&h->ctx_dec,
> +					      ctext, ctext_len,
> +					      ptext, *ptext_len);
> +	}
> +
> +	if (ret < 0) {
> +		_gnutls_switch_fips_state(GNUTLS_FIPS140_OP_ERROR);
> +	} else {
> +		_gnutls_switch_fips_state(GNUTLS_FIPS140_OP_APPROVED);
> +	}

Good point, fixed; also added a check on `ret` before removing padding.

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