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X.509 Subject Public Key Info (RFC5280) describing public keys as well as their associated AlgorithmIdentifiers (i.e. OIDs)
Last release 2 days ago
05 Oct 2026
Ships fairly regularly
a new release about every 6 months
Nearly every release is documented
notes for 13 of 13 stable releases
6 versions withdrawn
withdrawn after publishing
6 years old
29 releases · first in 2020
One column per quarter.
spki v0.8.1
spki v0.8.1 (#2474)
Implement Hash for AlgorithmIdentifier ([#1414])
Hash for AlgorithmIdentifier (#1414)der::Writer adapter for Digest ([#1769])core::error::Error for Error (#2274)spki::from_key (#1290)der to v0.8 (#2234)digest to v0.11 (#2237)sha2 dependency to v0.11 (#2273)OidUnknown reporting (#1378)Nothing published for this version
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public key to SubjectPublicKeyInfoOwned helper ([#1269])
SubjectPublicKeyInfoOwned helper (#1269)AlgorithmIdentifierWithOid trait ([#986])
AssociatedAlgorithmIdentifier trait ([#962], [#966])
Make AlgorithmIdentifier generic around Params ([#769])
AlgorithmIdentifier::oids() helper function ([#443])
AlgorithmIdentifier::oids() helper function (#443)PartialOrd for AlgorithmIdentifier (#476)DecodeValue for AlgorithmIdentifier (#449)ValueOrd for SubjectPublicKeyInfo (#522)PublicKeyDocument with der crate's Document type (#571)der crate dependency to v0.6 (#653)PublicKeyDocument (#571)Nothing published for this version
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Error::KeyMalformed variant ([#318])
Error::KeyMalformed variant (#318)Impl ValueOrd for AlgorithmIdentifier ([#289])
ValueOrd for AlgorithmIdentifier (#289)Relax base64ct version requirement to ^1 ([#239])
base64ct version requirement to ^1 (#239)Replace from_spki with TryFrom ([#231])
from_spki with TryFrom (#231)SPKI fingerprint support ([#36])
[#2]: https://github.com/RustCrypto/formats/pull/2
formats repo (#2)AlgorithmIdentifier::assert_oids
AlgorithmIdentifier::assert_oidsder to v0.4### Changed - Bump der to v0.3 ### Removed - AlgorithmParameters enum
der to v0.3AlgorithmParameters enumImpl Choice for AlgorithmParameters
Choice for AlgorithmParametersReturn Result from AlgorithmIdentifier::params_*
Result from AlgorithmIdentifier::params_*- Initial release
Nothing published for this version
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