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openpgp-card: internal API cleanup, continued

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This commit is contained in:
Heiko Schaefer 2023-08-29 15:07:31 +02:00
parent 315aa7a94c
commit 9761e0e664
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GPG key ID: 4A849A1904CCBD7D
2 changed files with 13 additions and 15 deletions
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19
openpgp-card/src/algorithm.rs
View file

@ -12,7 +12,6 @@
use std::convert::TryFrom;
use std::fmt;
use crate::card_do::ApplicationRelatedData;
use crate::crypto_data::EccType;
use crate::{keys, oid, Error, KeyType};
@ -77,38 +76,40 @@ impl AlgoSimple {
/// Return the appropriate Algo for this AlgoSimple.
///
/// This mapping differs between cards, based on `ard` and `algo_info`
/// (e.g. the exact Algo variant can have a different size for e, in RSA;
/// also, the import_format can differ).
/// This mapping depends on the actual card in use
/// (e.g.: the size of "e", in RSA can differ;
/// or a different `import_format` can be selected).
///
/// These card-specific settings are derived from `algorithm_attributes` and `algo_info`.
pub(crate) fn determine_algo_attributes(
&self,
key_type: KeyType,
ard: &ApplicationRelatedData,
algorithm_attributes: AlgorithmAttributes,
algo_info: Option<AlgoInfo>,
) -> Result<AlgorithmAttributes, Error> {
let algo = match self {
Self::RSA1k => AlgorithmAttributes::Rsa(keys::determine_rsa_attrs(
1024,
key_type,
ard.algorithm_attributes(key_type)?,
algorithm_attributes,
algo_info,
)?),
Self::RSA2k => AlgorithmAttributes::Rsa(keys::determine_rsa_attrs(
2048,
key_type,
ard.algorithm_attributes(key_type)?,
algorithm_attributes,
algo_info,
)?),
Self::RSA3k => AlgorithmAttributes::Rsa(keys::determine_rsa_attrs(
3072,
key_type,
ard.algorithm_attributes(key_type)?,
algorithm_attributes,
algo_info,
)?),
Self::RSA4k => AlgorithmAttributes::Rsa(keys::determine_rsa_attrs(
4096,
key_type,
ard.algorithm_attributes(key_type)?,
algorithm_attributes,
algo_info,
)?),
Self::NIST256 => AlgorithmAttributes::Ecc(keys::determine_ecc_attrs(

9
openpgp-card/src/lib.rs
View file

@ -1242,14 +1242,11 @@ impl<'a> Transaction<'a> {
simple: AlgoSimple,
) -> Result<(PublicKeyMaterial, KeyGenerationTime), Error> {
let ard = self.application_related_data()?;
let algo_info = if let Ok(ai) = self.algorithm_information() {
ai
} else {
None
};
let algorithm_attributes = ard.algorithm_attributes(key_type)?;
let algo = simple.determine_algo_attributes(key_type, &ard, algo_info)?;
let algo_info = self.algorithm_information().ok().flatten();
let algo = simple.determine_algo_attributes(key_type, algorithm_attributes, algo_info)?;
Self::generate_key(self, fp_from_pub, key_type, Some(&algo))
}